This is the start of the stable review cycle for the 4.19.93 release. There are 114 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.
Responses should be made by Sat, 04 Jan 2020 21:58:48 +0000. Anything received after that time might be too late.
The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.19.93-rc1... or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y and the diffstat can be found below.
thanks,
greg k-h
------------- Pseudo-Shortlog of commits:
Greg Kroah-Hartman gregkh@linuxfoundation.org Linux 4.19.93-rc1
Hans de Goede hdegoede@redhat.com pinctrl: baytrail: Really serialize all register accesses
David Engraf david.engraf@sysgo.com tty/serial: atmel: fix out of range clock divider handling
Christophe Leroy christophe.leroy@c-s.fr spi: fsl: don't map irq during probe
Taehee Yoo ap420073@gmail.com gtp: avoid zero size hashtable
Taehee Yoo ap420073@gmail.com gtp: fix an use-after-free in ipv4_pdp_find()
Taehee Yoo ap420073@gmail.com gtp: fix wrong condition in gtp_genl_dump_pdp()
Eric Dumazet edumazet@google.com tcp: do not send empty skb from tcp_write_xmit()
Eric Dumazet edumazet@google.com tcp/dccp: fix possible race __inet_lookup_established()
Russell King rmk+kernel@armlinux.org.uk net: marvell: mvpp2: phylink requires the link interrupt
Taehee Yoo ap420073@gmail.com gtp: do not allow adding duplicate tid and ms_addr pdp context
Hangbin Liu liuhangbin@gmail.com net/dst: do not confirm neighbor for vxlan and geneve pmtu update
Hangbin Liu liuhangbin@gmail.com sit: do not confirm neighbor when do pmtu update
Hangbin Liu liuhangbin@gmail.com vti: do not confirm neighbor when do pmtu update
Hangbin Liu liuhangbin@gmail.com tunnel: do not confirm neighbor when do pmtu update
Hangbin Liu liuhangbin@gmail.com net/dst: add new function skb_dst_update_pmtu_no_confirm
Hangbin Liu liuhangbin@gmail.com gtp: do not confirm neighbor when do pmtu update
Hangbin Liu liuhangbin@gmail.com ip6_gre: do not confirm neighbor when do pmtu update
Hangbin Liu liuhangbin@gmail.com net: add bool confirm_neigh parameter for dst_ops.update_pmtu
Stefano Garzarella sgarzare@redhat.com vhost/vsock: accept only packets with the right dst_cid
Antonio Messina amessina@google.com udp: fix integer overflow while computing available space in sk_rcvbuf
Cambda Zhu cambda@linux.alibaba.com tcp: Fix highest_sack and highest_sack_seq
Vladis Dronov vdronov@redhat.com ptp: fix the race between the release of ptp_clock and cdev
Martin Blumenstingl martin.blumenstingl@googlemail.com net: stmmac: dwmac-meson8b: Fix the RGMII TX delay on Meson8b/8m2 SoCs
Vladyslav Tarasiuk vladyslavt@mellanox.com net/mlxfw: Fix out-of-memory error in mfa2 flash burning
Netanel Belgazal netanel@amazon.com net: ena: fix napi handler misbehavior when the napi budget is zero
Eric Dumazet edumazet@google.com hrtimer: Annotate lockless access to timer->state
Eric Dumazet edumazet@google.com net: icmp: fix data-race in cmp_global_allow()
Eric Dumazet edumazet@google.com net: add a READ_ONCE() in skb_peek_tail()
Eric Dumazet edumazet@google.com inetpeer: fix data-race in inet_putpeer / inet_putpeer
Eric Dumazet edumazet@google.com netfilter: bridge: make sure to pull arp header in br_nf_forward_arp()
Eric Dumazet edumazet@google.com 6pack,mkiss: fix possible deadlock
Florian Westphal fw@strlen.de netfilter: ebtables: compat: reject all padding in matches/watchers
Logan Gunthorpe logang@deltatee.com PCI/switchtec: Read all 64 bits of part_event_bitmap
Linus Torvalds torvalds@linux-foundation.org filldir[64]: remove WARN_ON_ONCE() for bad directory entries
Linus Torvalds torvalds@linux-foundation.org Make filldir[64]() verify the directory entry filename is valid
Mattias Jacobsson 2pi@mok.nu perf strbuf: Remove redundant va_end() in strbuf_addv()
Mahesh Bandewar maheshb@google.com bonding: fix active-backup transition after link failure
Takashi Iwai tiwai@suse.de ALSA: hda - Downgrade error message for single-cmd fallback
Marco Oliverio marco.oliverio@tanaza.com netfilter: nf_queue: enqueue skbs with NULL dst
Alexander Lobakin alobakin@dlink.ru net, sysctl: Fix compiler warning when only cBPF is present
Jan H. Schönherr jschoenh@amazon.de x86/mce: Fix possibly incorrect severity calculation on AMD
Greg Kroah-Hartman gregkh@linuxfoundation.org Revert "powerpc/vcpu: Assume dedicated processors as non-preempt"
Mike Rapoport rppt@linux.ibm.com userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK
Johannes Weiner hannes@cmpxchg.org kernel: sysctl: make drop_caches write-only
Daniel Baluta daniel.baluta@nxp.com mailbox: imx: Fix Tx doorbell shutdown path
Ding Xiang dingxiang@cmss.chinamobile.com ocfs2: fix passing zero to 'PTR_ERR' warning
Thomas Richter tmricht@linux.ibm.com s390/cpum_sf: Check for SDBT and SDB consistency
Masahiro Yamada yamada.masahiro@socionext.com libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h
Harald Freudenberger freude@linux.ibm.com s390/zcrypt: handle new reply code FILTERED_BY_HYPERVISOR
Arnaldo Carvalho de Melo acme@redhat.com perf regs: Make perf_reg_name() return "unknown" instead of NULL
Adrian Hunter adrian.hunter@intel.com perf script: Fix brstackinsn for AUXTRACE
Diego Elio Pettenò flameeyes@flameeyes.com cdrom: respect device capabilities during opening action
Chengguang Xu cgxu519@mykernel.net f2fs: choose hardlimit when softlimit is larger than hardlimit in f2fs_statfs_project()
Nathan Chancellor natechancellor@gmail.com powerpc: Don't add -mabi= flags when building with Clang
Masahiro Yamada yamada.masahiro@socionext.com scripts/kallsyms: fix definitely-lost memory leak
Colin Ian King colin.king@canonical.com apparmor: fix unsigned len comparison with less than zero
Vladimir Oltean vladimir.oltean@nxp.com gpio: mpc8xxx: Don't overwrite default irq_set_type callback
Bart Van Assche bvanassche@acm.org scsi: target: iscsi: Wait for all commands to finish before freeing a session
Anatol Pomazau anatol@google.com scsi: iscsi: Don't send data to unbound connection
Finn Thain fthain@telegraphics.com.au scsi: NCR5380: Add disconnect_mask module parameter
Maurizio Lombardi mlombard@redhat.com scsi: scsi_debug: num_tgts must be >= 0
Subhash Jadavani subhashj@codeaurora.org scsi: ufs: Fix error handing during hibern8 enter
peter chang dpf@google.com scsi: pm80xx: Fix for SATA device discovery
Kevin Hao haokexin@gmail.com watchdog: Fix the race between the release of watchdog_core_data and cdev
Andrew Duggan aduggan@synaptics.com HID: rmi: Check that the RMI_STARTED bit is set before unregistering the RMI transport device
Blaž Hrastnik blaz@mxxn.io HID: Improve Windows Precision Touchpad detection.
Qian Cai cai@lca.pw libnvdimm/btt: fix variable 'rc' set but not used
Doug Berger opendmb@gmail.com ARM: 8937/1: spectre-v2: remove Brahma-B53 from hardening
Hans de Goede hdegoede@redhat.com HID: logitech-hidpp: Silence intermittent get_battery_capacity errors
Jinke Fan fanjinke@hygon.cn HID: quirks: Add quirk for HP MSU1465 PIXART OEM mouse
Coly Li colyli@suse.de bcache: at least try to shrink 1 node in bch_mca_scan()
Robert Jarzmik robert.jarzmik@free.fr clk: pxa: fix one of the pxa RTC clocks
Finn Thain fthain@telegraphics.com.au scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE
Gustavo L. F. Walbon gwalbon@linux.ibm.com powerpc/security: Fix wrong message when RFI Flush is disable
Tyrel Datwyler tyreld@linux.ibm.com PCI: rpaphp: Correctly match ibm, my-drc-index to drc-name when using drc-info
Tyrel Datwyler tyreld@linux.ibm.com PCI: rpaphp: Annotate and correctly byte swap DRC properties
Tyrel Datwyler tyreld@linux.ibm.com PCI: rpaphp: Don't rely on firmware feature to imply drc-info support
David Hildenbrand david@redhat.com powerpc/pseries/cmm: Implement release() function for sysfs device
Bean Huo beanhuo@micron.com scsi: ufs: fix potential bug which ends in system hang
Tyrel Datwyler tyreld@linux.ibm.com PCI: rpaphp: Fix up pointer to first drc-info entry
James Smart jsmart2021@gmail.com scsi: lpfc: fix: Coverity: lpfc_cmpl_els_rsp(): Null pointer dereferences
Konstantin Khlebnikov khlebnikov@yandex-team.ru fs/quota: handle overflows of sysctl fs.quota.* and report as unsigned long
Lee Jones lee.jones@linaro.org mfd: mfd-core: Honour Device Tree's request to disable a child-device
Paul Cercueil paul@crapouillou.net irqchip: ingenic: Error out if IRQ domain creation failed
Florian Fainelli f.fainelli@gmail.com irqchip/irq-bcm7038-l1: Enable parent IRQ if necessary
Michael Hennerich michael.hennerich@analog.com clk: clk-gpio: propagate rate change to parent
Jeffrey Hugo jeffrey.l.hugo@gmail.com clk: qcom: Allow constant ratio freq tables for rcg
Chao Yu yuchao0@huawei.com f2fs: fix to update dir's i_pino during cross_rename
James Smart jsmart2021@gmail.com scsi: lpfc: Fix duplicate unreg_rpi error in port offline flow
Bart Van Assche bvanassche@acm.org scsi: tracing: Fix handling of TRANSFER LENGTH == 0 for READ(6) and WRITE(6)
Jan Kara jack@suse.cz jbd2: Fix statistics for the number of logged blocks
Matthew Bobrowski mbobrowski@mbobrowski.org ext4: iomap that extends beyond EOF should be marked dirty
Matthew Bobrowski mbobrowski@mbobrowski.org ext4: update direct I/O read lock pattern for IOCB_NOWAIT
Aneesh Kumar K.V aneesh.kumar@linux.ibm.com powerpc/book3s64/hash: Add cond_resched to avoid soft lockup warning
Anthony Steinhauser asteinhauser@google.com powerpc/security/book3s64: Report L1TF status in sysfs
Geert Uytterhoeven geert+renesas@glider.be clocksource/drivers/timer-of: Use unique device name instead of timer
Chuhong Yuan hslester96@gmail.com clocksource/drivers/asm9260: Add a check for of_clk_get
Guido Günther agx@sigxcpu.org leds: lm3692x: Handle failure to probe the regulator
Eric Dumazet edumazet@google.com dma-debug: add a schedule point in debug_dma_dump_mappings()
Michael Ellerman mpe@ellerman.id.au powerpc/tools: Don't quote $objdump in scripts
Aneesh Kumar K.V aneesh.kumar@linux.ibm.com powerpc/pseries: Don't fail hash page table insert for bolted mapping
Michael Ellerman mpe@ellerman.id.au powerpc/pseries: Mark accumulate_stolen_time() as notrace
Xiang Chen chenxiang66@hisilicon.com scsi: hisi_sas: Replace in_softirq() check in hisi_sas_task_exec()
Dan Carpenter dan.carpenter@oracle.com scsi: csiostor: Don't enable IRQs too early
James Smart jsmart2021@gmail.com scsi: lpfc: Fix SLI3 hba in loop mode not discovering devices
David Disseldorp ddiss@suse.de scsi: target: compare full CHAP_A Algorithm strings
Nicholas Graumann nick.graumann@gmail.com dmaengine: xilinx_dma: Clear desc_pendingcount in xilinx_dma_reset
Thierry Reding treding@nvidia.com iommu/tegra-smmu: Fix page tables in > 4 GiB memory
Ezequiel Garcia ezequiel@collabora.com iommu: rockchip: Free domain on .domain_free
Chao Yu yuchao0@huawei.com f2fs: fix to update time in lazytime mode
Evan Green evgreen@chromium.org Input: atmel_mxt_ts - disable IRQ across suspend
James Smart jsmart2021@gmail.com scsi: lpfc: Fix locking on mailbox command completion
Sreekanth Reddy sreekanth.reddy@broadcom.com scsi: mpt3sas: Fix clear pending bit in ioctl status
James Smart jsmart2021@gmail.com scsi: lpfc: Fix discovery failures when target device connectivity bounces
-------------
Diffstat:
Makefile | 4 +- arch/arm/boot/compressed/libfdt_env.h | 4 +- arch/arm/mm/proc-v7-bugs.c | 3 + arch/powerpc/Makefile | 4 + arch/powerpc/boot/libfdt_env.h | 2 + arch/powerpc/include/asm/spinlock.h | 4 +- arch/powerpc/kernel/security.c | 21 ++-- arch/powerpc/kernel/time.c | 2 +- arch/powerpc/mm/hash_utils_64.c | 10 +- arch/powerpc/platforms/pseries/cmm.c | 5 + arch/powerpc/platforms/pseries/setup.c | 7 -- arch/powerpc/tools/relocs_check.sh | 2 +- arch/powerpc/tools/unrel_branch_check.sh | 4 +- arch/s390/kernel/perf_cpum_sf.c | 17 +++- arch/x86/kernel/cpu/mcheck/mce.c | 2 +- drivers/cdrom/cdrom.c | 12 ++- drivers/clk/clk-gpio.c | 2 +- drivers/clk/pxa/clk-pxa27x.c | 1 + drivers/clk/qcom/clk-rcg2.c | 2 + drivers/clk/qcom/common.c | 3 + drivers/clocksource/asm9260_timer.c | 4 + drivers/clocksource/timer-of.c | 2 +- drivers/dma/xilinx/xilinx_dma.c | 1 + drivers/gpio/gpio-mpc8xxx.c | 3 +- drivers/hid/hid-core.c | 4 + drivers/hid/hid-ids.h | 1 + drivers/hid/hid-logitech-hidpp.c | 3 + drivers/hid/hid-quirks.c | 1 + drivers/hid/hid-rmi.c | 3 +- drivers/input/touchscreen/atmel_mxt_ts.c | 4 + drivers/iommu/rockchip-iommu.c | 7 +- drivers/iommu/tegra-smmu.c | 11 +- drivers/irqchip/irq-bcm7038-l1.c | 4 + drivers/irqchip/irq-ingenic.c | 15 ++- drivers/leds/leds-lm3692x.c | 13 ++- drivers/mailbox/imx-mailbox.c | 4 +- drivers/md/bcache/btree.c | 2 + drivers/mfd/mfd-core.c | 5 + drivers/net/bonding/bond_main.c | 3 - drivers/net/ethernet/amazon/ena/ena_netdev.c | 10 +- drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +- drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.c | 7 +- .../net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 14 ++- drivers/net/gtp.c | 111 ++++++++++++--------- drivers/net/hamradio/6pack.c | 4 +- drivers/net/hamradio/mkiss.c | 4 +- drivers/nvdimm/btt.c | 8 +- drivers/pci/hotplug/rpaphp_core.c | 38 +++---- drivers/pci/switch/switchtec.c | 2 +- drivers/pinctrl/intel/pinctrl-baytrail.c | 81 ++++++++------- drivers/ptp/ptp_clock.c | 31 +++--- drivers/ptp/ptp_private.h | 2 +- drivers/s390/crypto/zcrypt_error.h | 2 + drivers/scsi/NCR5380.c | 6 +- drivers/scsi/atari_scsi.c | 6 +- drivers/scsi/csiostor/csio_lnode.c | 15 +-- drivers/scsi/hisi_sas/hisi_sas_main.c | 8 +- drivers/scsi/iscsi_tcp.c | 8 ++ drivers/scsi/lpfc/lpfc_els.c | 2 +- drivers/scsi/lpfc/lpfc_hbadisc.c | 7 +- drivers/scsi/lpfc/lpfc_nportdisc.c | 4 +- drivers/scsi/lpfc/lpfc_sli.c | 15 ++- drivers/scsi/mac_scsi.c | 2 +- drivers/scsi/mpt3sas/mpt3sas_ctl.c | 3 +- drivers/scsi/pm8001/pm80xx_hwi.c | 2 + drivers/scsi/scsi_debug.c | 5 + drivers/scsi/scsi_trace.c | 11 +- drivers/scsi/sun3_scsi.c | 4 +- drivers/scsi/ufs/ufshcd.c | 21 ++-- drivers/spi/spi-fsl-spi.c | 5 +- drivers/target/iscsi/iscsi_target.c | 10 +- drivers/target/iscsi/iscsi_target_auth.c | 2 +- drivers/tty/serial/atmel_serial.c | 43 ++++---- drivers/vhost/vsock.c | 4 +- drivers/watchdog/watchdog_dev.c | 70 ++++++------- fs/ext4/inode.c | 16 ++- fs/f2fs/f2fs.h | 23 +++-- fs/f2fs/inode.c | 6 +- fs/f2fs/namei.c | 15 ++- fs/f2fs/super.c | 20 ++-- fs/jbd2/commit.c | 4 +- fs/ocfs2/acl.c | 4 +- fs/quota/dquot.c | 29 +++--- fs/readdir.c | 40 ++++++++ fs/userfaultfd.c | 18 ++-- include/linux/hrtimer.h | 14 ++- include/linux/libfdt_env.h | 3 + include/linux/posix-clock.h | 19 ++-- include/linux/quota.h | 2 +- include/linux/rculist_nulls.h | 37 +++++++ include/linux/skbuff.h | 6 +- include/net/dst.h | 13 ++- include/net/dst_ops.h | 3 +- include/net/inet_hashtables.h | 12 ++- include/net/sock.h | 5 + include/scsi/iscsi_proto.h | 1 + kernel/dma/debug.c | 1 + kernel/sysctl.c | 2 +- kernel/time/hrtimer.c | 11 +- kernel/time/posix-clock.c | 31 +++--- net/bridge/br_netfilter_hooks.c | 3 + net/bridge/br_nf_core.c | 3 +- net/bridge/netfilter/ebtables.c | 33 +++--- net/core/sysctl_net_core.c | 2 + net/decnet/dn_route.c | 6 +- net/ipv4/icmp.c | 11 +- net/ipv4/inet_connection_sock.c | 2 +- net/ipv4/inet_diag.c | 3 +- net/ipv4/inet_hashtables.c | 19 ++-- net/ipv4/inetpeer.c | 12 ++- net/ipv4/ip_tunnel.c | 2 +- net/ipv4/ip_vti.c | 2 +- net/ipv4/route.c | 9 +- net/ipv4/tcp_ipv4.c | 7 +- net/ipv4/tcp_output.c | 11 ++ net/ipv4/udp.c | 2 +- net/ipv4/xfrm4_policy.c | 5 +- net/ipv6/inet6_connection_sock.c | 2 +- net/ipv6/inet6_hashtables.c | 3 +- net/ipv6/ip6_gre.c | 2 +- net/ipv6/ip6_tunnel.c | 4 +- net/ipv6/ip6_vti.c | 2 +- net/ipv6/route.c | 22 ++-- net/ipv6/sit.c | 2 +- net/ipv6/xfrm6_policy.c | 5 +- net/netfilter/ipvs/ip_vs_xmit.c | 2 +- net/netfilter/nf_queue.c | 2 +- net/sctp/transport.c | 2 +- scripts/kallsyms.c | 2 + security/apparmor/label.c | 12 ++- sound/pci/hda/hda_controller.c | 2 +- tools/perf/builtin-script.c | 2 +- tools/perf/util/perf_regs.h | 2 +- tools/perf/util/strbuf.c | 1 - 134 files changed, 856 insertions(+), 450 deletions(-)
From: James Smart jsmart2021@gmail.com
[ Upstream commit 3f97aed6117c7677eb16756c4ec8b86000fd5822 ]
An issue was seen discovering all SCSI Luns when a target device undergoes link bounce.
The driver currently does not qualify the FC4 support on the target. Therefore it will send a SCSI PRLI and an NVMe PRLI. The expectation is that the target will reject the PRLI if it is not supported. If a PRLI times out, the driver will retry. The driver will not proceed with the device until both SCSI and NVMe PRLIs are resolved. In the failure case, the device is FCP only and does not respond to the NVMe PRLI, thus initiating the wait/retry loop in the driver. During that time, a RSCN is received (device bounced) causing the driver to issue a GID_FT. The GID_FT response comes back before the PRLI mess is resolved and it prematurely cancels the PRLI retry logic and leaves the device in a STE_PRLI_ISSUE state. Discovery with the target never completes or resets.
Fix by resetting the node state back to STE_NPR_NODE when GID_FT completes, thereby restarting the discovery process for the node.
Link: https://lore.kernel.org/r/20190922035906.10977-10-jsmart2021@gmail.com Signed-off-by: Dick Kennedy dick.kennedy@broadcom.com Signed-off-by: James Smart jsmart2021@gmail.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/lpfc/lpfc_hbadisc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index b36b3da323a0..5d657178c2b9 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -5231,9 +5231,14 @@ lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) /* If we've already received a PLOGI from this NPort * we don't need to try to discover it again. */ - if (ndlp->nlp_flag & NLP_RCV_PLOGI) + if (ndlp->nlp_flag & NLP_RCV_PLOGI && + !(ndlp->nlp_type & + (NLP_FCP_TARGET | NLP_NVME_TARGET))) return NULL;
+ ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); + spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(shost->host_lock);
From: Sreekanth Reddy sreekanth.reddy@broadcom.com
[ Upstream commit 782b281883caf70289ba6a186af29441a117d23e ]
When user issues diag register command from application with required size, and if driver unable to allocate the memory, then it will fail the register command. While failing the register command, driver is not currently clearing MPT3_CMD_PENDING bit in ctl_cmds.status variable which was set before trying to allocate the memory. As this bit is set, subsequent register command will be failed with BUSY status even when user wants to register the trace buffer will less memory.
Clear MPT3_CMD_PENDING bit in ctl_cmds.status before returning the diag register command with no memory status.
Link: https://lore.kernel.org/r/1568379890-18347-4-git-send-email-sreekanth.reddy@... Signed-off-by: Sreekanth Reddy sreekanth.reddy@broadcom.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/mpt3sas/mpt3sas_ctl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c index 5e8c059ce2c9..07345016fd9c 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c +++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c @@ -1597,7 +1597,8 @@ _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc, " for diag buffers, requested size(%d)\n", ioc->name, __func__, request_data_sz); mpt3sas_base_free_smid(ioc, smid); - return -ENOMEM; + rc = -ENOMEM; + goto out; } ioc->diag_buffer[buffer_type] = request_data; ioc->diag_buffer_sz[buffer_type] = request_data_sz;
From: James Smart jsmart2021@gmail.com
[ Upstream commit 07b8582430370097238b589f4e24da7613ca6dd3 ]
Symptoms were seen of the driver not having valid data for mailbox commands. After debugging, the following sequence was found:
The driver maintains a port-wide pointer of the mailbox command that is currently in execution. Once finished, the port-wide pointer is cleared (done in lpfc_sli4_mq_release()). The next mailbox command issued will set the next pointer and so on.
The mailbox response data is only copied if there is a valid port-wide pointer.
In the failing case, it was seen that a new mailbox command was being attempted in parallel with the completion. The parallel path was seeing the mailbox no long in use (flag check under lock) and thus set the port pointer. The completion path had cleared the active flag under lock, but had not touched the port pointer. The port pointer is cleared after the lock is released. In this case, the completion path cleared the just-set value by the parallel path.
Fix by making the calls that clear mbox state/port pointer while under lock. Also slightly cleaned up the error path.
Link: https://lore.kernel.org/r/20190922035906.10977-8-jsmart2021@gmail.com Signed-off-by: Dick Kennedy dick.kennedy@broadcom.com Signed-off-by: James Smart jsmart2021@gmail.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/lpfc/lpfc_sli.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index f459fd62e493..bd555f886d27 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -12928,13 +12928,19 @@ send_current_mbox: phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; /* Setting active mailbox pointer need to be in sync to flag clear */ phba->sli.mbox_active = NULL; + if (bf_get(lpfc_trailer_consumed, mcqe)) + lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq); spin_unlock_irqrestore(&phba->hbalock, iflags); /* Wake up worker thread to post the next pending mailbox command */ lpfc_worker_wake_up(phba); + return workposted; + out_no_mqe_complete: + spin_lock_irqsave(&phba->hbalock, iflags); if (bf_get(lpfc_trailer_consumed, mcqe)) lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq); - return workposted; + spin_unlock_irqrestore(&phba->hbalock, iflags); + return false; }
/**
From: Evan Green evgreen@chromium.org
[ Upstream commit 463fa44eec2fef50d111ed0199cf593235065c04 ]
Across suspend and resume, we are seeing error messages like the following:
atmel_mxt_ts i2c-PRP0001:00: __mxt_read_reg: i2c transfer failed (-121) atmel_mxt_ts i2c-PRP0001:00: Failed to read T44 and T5 (-121)
This occurs because the driver leaves its IRQ enabled. Upon resume, there is an IRQ pending, but the interrupt is serviced before both the driver and the underlying I2C bus have been resumed. This causes EREMOTEIO errors.
Disable the IRQ in suspend, and re-enable it on resume. If there are cases where the driver enters suspend with interrupts disabled, that's a bug we should fix separately.
Signed-off-by: Evan Green evgreen@chromium.org Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/input/touchscreen/atmel_mxt_ts.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index a7ace07e179e..e8f98de60df3 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -3162,6 +3162,8 @@ static int __maybe_unused mxt_suspend(struct device *dev)
mutex_unlock(&input_dev->mutex);
+ disable_irq(data->irq); + return 0; }
@@ -3174,6 +3176,8 @@ static int __maybe_unused mxt_resume(struct device *dev) if (!input_dev) return 0;
+ enable_irq(data->irq); + mutex_lock(&input_dev->mutex);
if (input_dev->users)
From: Chao Yu yuchao0@huawei.com
[ Upstream commit fe1897eaa6646f5a64a4cee0e6473ed9887d324b ]
generic/018 reports an inconsistent status of atime, the testcase is as below: - open file with O_SYNC - write file to construct fraged space - calc md5 of file - record {a,c,m}time - defrag file --- do nothing - umount & mount - check {a,c,m}time
The root cause is, as f2fs enables lazytime by default, atime update will dirty vfs inode, rather than dirtying f2fs inode (by set with FI_DIRTY_INODE), so later f2fs_write_inode() called from VFS will fail to update inode page due to our skip:
f2fs_write_inode() if (is_inode_flag_set(inode, FI_DIRTY_INODE)) return 0;
So eventually, after evict(), we lose last atime for ever.
To fix this issue, we need to check whether {a,c,m,cr}time is consistent in between inode cache and inode page, and only skip f2fs_update_inode() if f2fs inode is not dirty and time is consistent as well.
Signed-off-by: Chao Yu yuchao0@huawei.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/f2fs/f2fs.h | 23 +++++++++++++++-------- fs/f2fs/inode.c | 6 +++++- 2 files changed, 20 insertions(+), 9 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 34e48bcf5087..72d154e71bb5 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -2578,6 +2578,20 @@ static inline void clear_file(struct inode *inode, int type) f2fs_mark_inode_dirty_sync(inode, true); }
+static inline bool f2fs_is_time_consistent(struct inode *inode) +{ + if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime)) + return false; + if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime)) + return false; + if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime)) + return false; + if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 3, + &F2FS_I(inode)->i_crtime)) + return false; + return true; +} + static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync) { bool ret; @@ -2595,14 +2609,7 @@ static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync) i_size_read(inode) & ~PAGE_MASK) return false;
- if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime)) - return false; - if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime)) - return false; - if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime)) - return false; - if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 3, - &F2FS_I(inode)->i_crtime)) + if (!f2fs_is_time_consistent(inode)) return false;
down_read(&F2FS_I(inode)->i_sem); diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 540d45759621..a01be7d8db86 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -614,7 +614,11 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) inode->i_ino == F2FS_META_INO(sbi)) return 0;
- if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) + /* + * atime could be updated without dirtying f2fs inode in lazytime mode + */ + if (f2fs_is_time_consistent(inode) && + !is_inode_flag_set(inode, FI_DIRTY_INODE)) return 0;
/*
From: Ezequiel Garcia ezequiel@collabora.com
[ Upstream commit 42bb97b80f2e3bf592e3e99d109b67309aa1b30e ]
IOMMU domain resource life is well-defined, managed by .domain_alloc and .domain_free.
Therefore, domain-specific resources shouldn't be tied to the device life, but instead to its domain.
Signed-off-by: Ezequiel Garcia ezequiel@collabora.com Reviewed-by: Robin Murphy robin.murphy@arm.com Acked-by: Heiko Stuebner heiko@sntech.de Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iommu/rockchip-iommu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index ad3e2b97469e..140b287e886c 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -977,13 +977,13 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) if (!dma_dev) return NULL;
- rk_domain = devm_kzalloc(dma_dev, sizeof(*rk_domain), GFP_KERNEL); + rk_domain = kzalloc(sizeof(*rk_domain), GFP_KERNEL); if (!rk_domain) return NULL;
if (type == IOMMU_DOMAIN_DMA && iommu_get_dma_cookie(&rk_domain->domain)) - return NULL; + goto err_free_domain;
/* * rk32xx iommus use a 2 level pagetable. @@ -1018,6 +1018,8 @@ err_free_dt: err_put_cookie: if (type == IOMMU_DOMAIN_DMA) iommu_put_dma_cookie(&rk_domain->domain); +err_free_domain: + kfree(rk_domain);
return NULL; } @@ -1046,6 +1048,7 @@ static void rk_iommu_domain_free(struct iommu_domain *domain)
if (domain->type == IOMMU_DOMAIN_DMA) iommu_put_dma_cookie(&rk_domain->domain); + kfree(rk_domain); }
static int rk_iommu_add_device(struct device *dev)
From: Thierry Reding treding@nvidia.com
[ Upstream commit 96d3ab802e4930a29a33934373157d6dff1b2c7e ]
Page tables that reside in physical memory beyond the 4 GiB boundary are currently not working properly. The reason is that when the physical address for page directory entries is read, it gets truncated at 32 bits and can cause crashes when passing that address to the DMA API.
Fix this by first casting the PDE value to a dma_addr_t and then using the page frame number mask for the SMMU instance to mask out the invalid bits, which are typically used for mapping attributes, etc.
Signed-off-by: Thierry Reding treding@nvidia.com Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iommu/tegra-smmu.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 121d3cb7ddd1..fa0ecb5e6380 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -164,9 +164,9 @@ static bool smmu_dma_addr_valid(struct tegra_smmu *smmu, dma_addr_t addr) return (addr & smmu->pfn_mask) == addr; }
-static dma_addr_t smmu_pde_to_dma(u32 pde) +static dma_addr_t smmu_pde_to_dma(struct tegra_smmu *smmu, u32 pde) { - return pde << 12; + return (dma_addr_t)(pde & smmu->pfn_mask) << 12; }
static void smmu_flush_ptc_all(struct tegra_smmu *smmu) @@ -551,6 +551,7 @@ static u32 *tegra_smmu_pte_lookup(struct tegra_smmu_as *as, unsigned long iova, dma_addr_t *dmap) { unsigned int pd_index = iova_pd_index(iova); + struct tegra_smmu *smmu = as->smmu; struct page *pt_page; u32 *pd;
@@ -559,7 +560,7 @@ static u32 *tegra_smmu_pte_lookup(struct tegra_smmu_as *as, unsigned long iova, return NULL;
pd = page_address(as->pd); - *dmap = smmu_pde_to_dma(pd[pd_index]); + *dmap = smmu_pde_to_dma(smmu, pd[pd_index]);
return tegra_smmu_pte_offset(pt_page, iova); } @@ -601,7 +602,7 @@ static u32 *as_get_pte(struct tegra_smmu_as *as, dma_addr_t iova, } else { u32 *pd = page_address(as->pd);
- *dmap = smmu_pde_to_dma(pd[pde]); + *dmap = smmu_pde_to_dma(smmu, pd[pde]); }
return tegra_smmu_pte_offset(as->pts[pde], iova); @@ -626,7 +627,7 @@ static void tegra_smmu_pte_put_use(struct tegra_smmu_as *as, unsigned long iova) if (--as->count[pde] == 0) { struct tegra_smmu *smmu = as->smmu; u32 *pd = page_address(as->pd); - dma_addr_t pte_dma = smmu_pde_to_dma(pd[pde]); + dma_addr_t pte_dma = smmu_pde_to_dma(smmu, pd[pde]);
tegra_smmu_set_pde(as, iova, 0);
From: Nicholas Graumann nick.graumann@gmail.com
[ Upstream commit 8a631a5a0f7d4a4a24dba8587d5d9152be0871cc ]
Whenever we reset the channel, we need to clear desc_pendingcount along with desc_submitcount. Otherwise when a new transaction is submitted, the irq coalesce level could be programmed to an incorrect value in the axidma case.
This behavior can be observed when terminating pending transactions with xilinx_dma_terminate_all() and then submitting new transactions without releasing and requesting the channel.
Signed-off-by: Nicholas Graumann nick.graumann@gmail.com Signed-off-by: Radhey Shyam Pandey radhey.shyam.pandey@xilinx.com Link: https://lore.kernel.org/r/1571150904-3988-8-git-send-email-radhey.shyam.pand... Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma/xilinx/xilinx_dma.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 8aec137b4fca..d56b6b0e22a8 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -1427,6 +1427,7 @@ static int xilinx_dma_reset(struct xilinx_dma_chan *chan)
chan->err = false; chan->idle = true; + chan->desc_pendingcount = 0; chan->desc_submitcount = 0;
return err;
From: David Disseldorp ddiss@suse.de
[ Upstream commit 9cef2a7955f2754257a7cddedec16edae7b587d0 ]
RFC 2307 states:
For CHAP [RFC1994], in the first step, the initiator MUST send:
CHAP_A=<A1,A2...>
Where A1,A2... are proposed algorithms, in order of preference. ... For the Algorithm, as stated in [RFC1994], one value is required to be implemented:
5 (CHAP with MD5)
LIO currently checks for this value by only comparing a single byte in the tokenized Algorithm string, which means that any value starting with a '5' (e.g. "55") is interpreted as "CHAP with MD5". Fix this by comparing the entire tokenized string.
Reviewed-by: Lee Duncan lduncan@suse.com Reviewed-by: Mike Christie mchristi@redhat.com Signed-off-by: David Disseldorp ddiss@suse.de Link: https://lore.kernel.org/r/20190912095547.22427-2-ddiss@suse.de Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/target/iscsi/iscsi_target_auth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/target/iscsi/iscsi_target_auth.c b/drivers/target/iscsi/iscsi_target_auth.c index e2fa3a3bc81d..b6bf605fa5c1 100644 --- a/drivers/target/iscsi/iscsi_target_auth.c +++ b/drivers/target/iscsi/iscsi_target_auth.c @@ -78,7 +78,7 @@ static int chap_check_algorithm(const char *a_str) if (!token) goto out;
- if (!strncmp(token, "5", 1)) { + if (!strcmp(token, "5")) { pr_debug("Selected MD5 Algorithm\n"); kfree(orig); return CHAP_DIGEST_MD5;
From: James Smart jsmart2021@gmail.com
[ Upstream commit feff8b3d84d3d9570f893b4d83e5eab6693d6a52 ]
When operating in private loop mode, PLOGI exchanges are racing and the driver tries to abort it's PLOGI. But the PLOGI abort ends up terminating the login with the other end causing the other end to abort its PLOGI as well. Discovery never fully completes.
Fix by disabling the PLOGI abort when private loop and letting the state machine play out.
Link: https://lore.kernel.org/r/20191018211832.7917-5-jsmart2021@gmail.com Signed-off-by: Dick Kennedy dick.kennedy@broadcom.com Signed-off-by: James Smart jsmart2021@gmail.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/lpfc/lpfc_nportdisc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c index bd8dc6a2243c..3dfed191252c 100644 --- a/drivers/scsi/lpfc/lpfc_nportdisc.c +++ b/drivers/scsi/lpfc/lpfc_nportdisc.c @@ -483,8 +483,10 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, * single discovery thread, this will cause a huge delay in * discovery. Also this will cause multiple state machines * running in parallel for this node. + * This only applies to a fabric environment. */ - if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) { + if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) && + (vport->fc_flag & FC_FABRIC)) { /* software abort outstanding PLOGI */ lpfc_els_abort(phba, ndlp); }
From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit d6c9b31ac3064fbedf8961f120a4c117daa59932 ]
These are called with IRQs disabled from csio_mgmt_tmo_handler() so we can't call spin_unlock_irq() or it will enable IRQs prematurely.
Fixes: a3667aaed569 ("[SCSI] csiostor: Chelsio FCoE offload driver") Link: https://lore.kernel.org/r/20191019085913.GA14245@mwanda Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/csiostor/csio_lnode.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/csiostor/csio_lnode.c b/drivers/scsi/csiostor/csio_lnode.c index cc5611efc7a9..a8e29e3d3572 100644 --- a/drivers/scsi/csiostor/csio_lnode.c +++ b/drivers/scsi/csiostor/csio_lnode.c @@ -301,6 +301,7 @@ csio_ln_fdmi_rhba_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) struct fc_fdmi_port_name *port_name; uint8_t buf[64]; uint8_t *fc4_type; + unsigned long flags;
if (fdmi_req->wr_status != FW_SUCCESS) { csio_ln_dbg(ln, "WR error:%x in processing fdmi rhba cmd\n", @@ -385,13 +386,13 @@ csio_ln_fdmi_rhba_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) len = (uint32_t)(pld - (uint8_t *)cmd);
/* Submit FDMI RPA request */ - spin_lock_irq(&hw->lock); + spin_lock_irqsave(&hw->lock, flags); if (csio_ln_mgmt_submit_req(fdmi_req, csio_ln_fdmi_done, FCOE_CT, &fdmi_req->dma_buf, len)) { CSIO_INC_STATS(ln, n_fdmi_err); csio_ln_dbg(ln, "Failed to issue fdmi rpa req\n"); } - spin_unlock_irq(&hw->lock); + spin_unlock_irqrestore(&hw->lock, flags); }
/* @@ -412,6 +413,7 @@ csio_ln_fdmi_dprt_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) struct fc_fdmi_rpl *reg_pl; struct fs_fdmi_attrs *attrib_blk; uint8_t buf[64]; + unsigned long flags;
if (fdmi_req->wr_status != FW_SUCCESS) { csio_ln_dbg(ln, "WR error:%x in processing fdmi dprt cmd\n", @@ -491,13 +493,13 @@ csio_ln_fdmi_dprt_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) attrib_blk->numattrs = htonl(numattrs);
/* Submit FDMI RHBA request */ - spin_lock_irq(&hw->lock); + spin_lock_irqsave(&hw->lock, flags); if (csio_ln_mgmt_submit_req(fdmi_req, csio_ln_fdmi_rhba_cbfn, FCOE_CT, &fdmi_req->dma_buf, len)) { CSIO_INC_STATS(ln, n_fdmi_err); csio_ln_dbg(ln, "Failed to issue fdmi rhba req\n"); } - spin_unlock_irq(&hw->lock); + spin_unlock_irqrestore(&hw->lock, flags); }
/* @@ -512,6 +514,7 @@ csio_ln_fdmi_dhba_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) void *cmd; struct fc_fdmi_port_name *port_name; uint32_t len; + unsigned long flags;
if (fdmi_req->wr_status != FW_SUCCESS) { csio_ln_dbg(ln, "WR error:%x in processing fdmi dhba cmd\n", @@ -542,13 +545,13 @@ csio_ln_fdmi_dhba_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) len += sizeof(*port_name);
/* Submit FDMI request */ - spin_lock_irq(&hw->lock); + spin_lock_irqsave(&hw->lock, flags); if (csio_ln_mgmt_submit_req(fdmi_req, csio_ln_fdmi_dprt_cbfn, FCOE_CT, &fdmi_req->dma_buf, len)) { CSIO_INC_STATS(ln, n_fdmi_err); csio_ln_dbg(ln, "Failed to issue fdmi dprt req\n"); } - spin_unlock_irq(&hw->lock); + spin_unlock_irqrestore(&hw->lock, flags); }
/**
From: Xiang Chen chenxiang66@hisilicon.com
[ Upstream commit 550c0d89d52d3bec5c299f69b4ed5d2ee6b8a9a6 ]
For IOs from upper layer, preemption may be disabled as it may be called by function __blk_mq_delay_run_hw_queue which will call get_cpu() (it disables preemption). So if flags HISI_SAS_REJECT_CMD_BIT is set in function hisi_sas_task_exec(), it may disable preempt twice after down() and up() which will cause following call trace:
BUG: scheduling while atomic: fio/60373/0x00000002 Call trace: dump_backtrace+0x0/0x150 show_stack+0x24/0x30 dump_stack+0xa0/0xc4 __schedule_bug+0x68/0x88 __schedule+0x4b8/0x548 schedule+0x40/0xd0 schedule_timeout+0x200/0x378 __down+0x78/0xc8 down+0x54/0x70 hisi_sas_task_exec.isra.10+0x598/0x8d8 [hisi_sas_main] hisi_sas_queue_command+0x28/0x38 [hisi_sas_main] sas_queuecommand+0x168/0x1b0 [libsas] scsi_queue_rq+0x2ac/0x980 blk_mq_dispatch_rq_list+0xb0/0x550 blk_mq_do_dispatch_sched+0x6c/0x110 blk_mq_sched_dispatch_requests+0x114/0x1d8 __blk_mq_run_hw_queue+0xb8/0x130 __blk_mq_delay_run_hw_queue+0x1c0/0x220 blk_mq_run_hw_queue+0xb0/0x128 blk_mq_sched_insert_requests+0xdc/0x208 blk_mq_flush_plug_list+0x1b4/0x3a0 blk_flush_plug_list+0xdc/0x110 blk_finish_plug+0x3c/0x50 blkdev_direct_IO+0x404/0x550 generic_file_read_iter+0x9c/0x848 blkdev_read_iter+0x50/0x78 aio_read+0xc8/0x170 io_submit_one+0x1fc/0x8d8 __arm64_sys_io_submit+0xdc/0x280 el0_svc_common.constprop.0+0xe0/0x1e0 el0_svc_handler+0x34/0x90 el0_svc+0x10/0x14 ...
To solve the issue, check preemptible() to avoid disabling preempt multiple when flag HISI_SAS_REJECT_CMD_BIT is set.
Link: https://lore.kernel.org/r/1571926105-74636-5-git-send-email-john.garry@huawe... Signed-off-by: Xiang Chen chenxiang66@hisilicon.com Signed-off-by: John Garry john.garry@huawei.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/hisi_sas/hisi_sas_main.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index f35c56217694..33191673249c 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -485,7 +485,13 @@ static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags, struct hisi_sas_dq *dq = NULL;
if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) { - if (in_softirq()) + /* + * For IOs from upper layer, it may already disable preempt + * in the IO path, if disable preempt again in down(), + * function schedule() will report schedule_bug(), so check + * preemptible() before goto down(). + */ + if (!preemptible()) return -EINVAL;
down(&hisi_hba->sem);
From: Michael Ellerman mpe@ellerman.id.au
[ Upstream commit eb8e20f89093b64f48975c74ccb114e6775cee22 ]
accumulate_stolen_time() is called prior to interrupt state being reconciled, which can trip the warning in arch_local_irq_restore():
WARNING: CPU: 5 PID: 1017 at arch/powerpc/kernel/irq.c:258 .arch_local_irq_restore+0x9c/0x130 ... NIP .arch_local_irq_restore+0x9c/0x130 LR .rb_start_commit+0x38/0x80 Call Trace: .ring_buffer_lock_reserve+0xe4/0x620 .trace_function+0x44/0x210 .function_trace_call+0x148/0x170 .ftrace_ops_no_ops+0x180/0x1d0 ftrace_call+0x4/0x8 .accumulate_stolen_time+0x1c/0xb0 decrementer_common+0x124/0x160
For now just mark it as notrace. We may change the ordering to call it after interrupt state has been reconciled, but that is a larger change.
Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20191024055932.27940-1-mpe@ellerman.id.au Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/kernel/time.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 8487ad686462..5449e76cf2df 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -235,7 +235,7 @@ static u64 scan_dispatch_log(u64 stop_tb) * Accumulate stolen time by scanning the dispatch trace log. * Called on entry from user mode. */ -void accumulate_stolen_time(void) +void notrace accumulate_stolen_time(void) { u64 sst, ust; unsigned long save_irq_soft_mask = irq_soft_mask_return();
From: Aneesh Kumar K.V aneesh.kumar@linux.ibm.com
[ Upstream commit 75838a3290cd4ebbd1f567f310ba04b6ef017ce4 ]
If the hypervisor returned H_PTEG_FULL for H_ENTER hcall, retry a hash page table insert by removing a random entry from the group.
After some runtime, it is very well possible to find all the 8 hash page table entry slot in the hpte group used for mapping. Don't fail a bolted entry insert in that case. With Storage class memory a user can find this error easily since a namespace enable/disable is equivalent to memory add/remove.
This results in failures as reported below:
$ ndctl create-namespace -r region1 -t pmem -m devdax -a 65536 -s 100M libndctl: ndctl_dax_enable: dax1.3: failed to enable Error: namespace1.2: failed to enable
failed to create namespace: No such device or address
In kernel log we find the details as below:
Unable to create mapping for hot added memory 0xc000042006000000..0xc00004200d000000: -1 dax_pmem: probe of dax1.3 failed with error -14
This indicates that we failed to create a bolted hash table entry for direct-map address backing the namespace.
We also observe failures such that not all namespaces will be enabled with ndctl enable-namespace all command.
Signed-off-by: Aneesh Kumar K.V aneesh.kumar@linux.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20191024093542.29777-2-aneesh.kumar@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/mm/hash_utils_64.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index b1007e9a31ba..11b41383e167 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -296,7 +296,14 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend, ret = mmu_hash_ops.hpte_insert(hpteg, vpn, paddr, tprot, HPTE_V_BOLTED, psize, psize, ssize); - + if (ret == -1) { + /* Try to remove a non bolted entry */ + ret = mmu_hash_ops.hpte_remove(hpteg); + if (ret != -1) + ret = mmu_hash_ops.hpte_insert(hpteg, vpn, paddr, tprot, + HPTE_V_BOLTED, psize, psize, + ssize); + } if (ret < 0) break;
From: Michael Ellerman mpe@ellerman.id.au
[ Upstream commit e44ff9ea8f4c8a90c82f7b85bd4f5e497c841960 ]
Some of our scripts are passed $objdump and then call it as "$objdump". This doesn't work if it contains spaces because we're using ccache, for example you get errors such as:
./arch/powerpc/tools/relocs_check.sh: line 48: ccache ppc64le-objdump: No such file or directory ./arch/powerpc/tools/unrel_branch_check.sh: line 26: ccache ppc64le-objdump: No such file or directory
Fix it by not quoting the string when we expand it, allowing the shell to do the right thing for us.
Fixes: a71aa05e1416 ("powerpc: Convert relocs_check to a shell script using grep") Fixes: 4ea80652dc75 ("powerpc/64s: Tool to flag direct branches from unrelocated interrupt vectors") Signed-off-by: Michael Ellerman mpe@ellerman.id.au Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20191024004730.32135-1-mpe@ellerman.id.au Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/tools/relocs_check.sh | 2 +- arch/powerpc/tools/unrel_branch_check.sh | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/tools/relocs_check.sh b/arch/powerpc/tools/relocs_check.sh index ec2d5c835170..d6c16e7faa38 100755 --- a/arch/powerpc/tools/relocs_check.sh +++ b/arch/powerpc/tools/relocs_check.sh @@ -23,7 +23,7 @@ objdump="$1" vmlinux="$2"
bad_relocs=$( -"$objdump" -R "$vmlinux" | +$objdump -R "$vmlinux" | # Only look at relocation lines. grep -E '<R_' | # These relocations are okay diff --git a/arch/powerpc/tools/unrel_branch_check.sh b/arch/powerpc/tools/unrel_branch_check.sh index 1e972df3107e..77114755dc6f 100755 --- a/arch/powerpc/tools/unrel_branch_check.sh +++ b/arch/powerpc/tools/unrel_branch_check.sh @@ -18,14 +18,14 @@ vmlinux="$2" #__end_interrupts should be located within the first 64K
end_intr=0x$( -"$objdump" -R "$vmlinux" -d --start-address=0xc000000000000000 \ +$objdump -R "$vmlinux" -d --start-address=0xc000000000000000 \ --stop-address=0xc000000000010000 | grep '<__end_interrupts>:' | awk '{print $1}' )
BRANCHES=$( -"$objdump" -R "$vmlinux" -D --start-address=0xc000000000000000 \ +$objdump -R "$vmlinux" -D --start-address=0xc000000000000000 \ --stop-address=${end_intr} | grep -e "^c[0-9a-f]*:[[:space:]]*([0-9a-f][0-9a-f][[:space:]]){4}[[:space:]]*b" | grep -v '<__start_initialization_multiplatform>' |
From: Eric Dumazet edumazet@google.com
[ Upstream commit 9ff6aa027dbb98755f0265695354f2dd07c0d1ce ]
debug_dma_dump_mappings() can take a lot of cpu cycles :
lpk43:/# time wc -l /sys/kernel/debug/dma-api/dump 163435 /sys/kernel/debug/dma-api/dump
real 0m0.463s user 0m0.003s sys 0m0.459s
Let's add a cond_resched() to avoid holding cpu for too long.
Signed-off-by: Eric Dumazet edumazet@google.com Cc: Corentin Labbe clabbe@baylibre.com Cc: Christoph Hellwig hch@lst.de Cc: Marek Szyprowski m.szyprowski@samsung.com Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/dma/debug.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c index c007d25bee09..3a2397444076 100644 --- a/kernel/dma/debug.c +++ b/kernel/dma/debug.c @@ -442,6 +442,7 @@ void debug_dma_dump_mappings(struct device *dev) }
spin_unlock_irqrestore(&bucket->lock, flags); + cond_resched(); } }
From: Guido Günther agx@sigxcpu.org
[ Upstream commit 396128d2ffcba6e1954cfdc9a89293ff79cbfd7c ]
Instead use devm_regulator_get_optional since the regulator is optional and check for errors.
Signed-off-by: Guido Günther agx@sigxcpu.org Acked-by: Pavel Machek pavel@ucw.cz Reviewed-by: Dan Murphy dmurphy@ti.com Signed-off-by: Pavel Machek pavel@ucw.cz Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/leds/leds-lm3692x.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c index 4f413a7c5f05..d79a66a73169 100644 --- a/drivers/leds/leds-lm3692x.c +++ b/drivers/leds/leds-lm3692x.c @@ -337,9 +337,18 @@ static int lm3692x_probe_dt(struct lm3692x_led *led) return ret; }
- led->regulator = devm_regulator_get(&led->client->dev, "vled"); - if (IS_ERR(led->regulator)) + led->regulator = devm_regulator_get_optional(&led->client->dev, "vled"); + if (IS_ERR(led->regulator)) { + ret = PTR_ERR(led->regulator); + if (ret != -ENODEV) { + if (ret != -EPROBE_DEFER) + dev_err(&led->client->dev, + "Failed to get vled regulator: %d\n", + ret); + return ret; + } led->regulator = NULL; + }
child = device_get_next_child_node(&led->client->dev, child); if (!child) {
From: Chuhong Yuan hslester96@gmail.com
[ Upstream commit 6e001f6a4cc73cd06fc7b8c633bc4906c33dd8ad ]
asm9260_timer_init misses a check for of_clk_get. Add a check for it and print errors like other clocksource drivers.
Signed-off-by: Chuhong Yuan hslester96@gmail.com Signed-off-by: Daniel Lezcano daniel.lezcano@linaro.org Link: https://lore.kernel.org/r/20191016124330.22211-1-hslester96@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clocksource/asm9260_timer.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/clocksource/asm9260_timer.c b/drivers/clocksource/asm9260_timer.c index 38cd2feb87c4..0ce760776406 100644 --- a/drivers/clocksource/asm9260_timer.c +++ b/drivers/clocksource/asm9260_timer.c @@ -198,6 +198,10 @@ static int __init asm9260_timer_init(struct device_node *np) }
clk = of_clk_get(np, 0); + if (IS_ERR(clk)) { + pr_err("Failed to get clk!\n"); + return PTR_ERR(clk); + }
ret = clk_prepare_enable(clk); if (ret) {
From: Geert Uytterhoeven geert+renesas@glider.be
[ Upstream commit 4411464d6f8b5e5759637235a6f2b2a85c2be0f1 ]
If a hardware-specific driver does not provide a name, the timer-of core falls back to device_node.name. Due to generic DT node naming policies, that name is almost always "timer", and thus doesn't identify the actual timer used.
Fix this by using device_node.full_name instead, which includes the unit addrees.
Example impact on /proc/timer_list:
-Clock Event Device: timer +Clock Event Device: timer@fcfec400
Signed-off-by: Geert Uytterhoeven geert+renesas@glider.be Reviewed-by: Rob Herring robh@kernel.org Signed-off-by: Daniel Lezcano daniel.lezcano@linaro.org Link: https://lore.kernel.org/r/20191016144747.29538-3-geert+renesas@glider.be Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clocksource/timer-of.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c index 06ed88a2a8a0..6e2cb3693ed8 100644 --- a/drivers/clocksource/timer-of.c +++ b/drivers/clocksource/timer-of.c @@ -199,7 +199,7 @@ int __init timer_of_init(struct device_node *np, struct timer_of *to) }
if (!to->clkevt.name) - to->clkevt.name = np->name; + to->clkevt.name = np->full_name;
to->np = np;
From: Anthony Steinhauser asteinhauser@google.com
[ Upstream commit 8e6b6da91ac9b9ec5a925b6cb13f287a54bd547d ]
Some PowerPC CPUs are vulnerable to L1TF to the same extent as to Meltdown. It is also mitigated by flushing the L1D on privilege transition.
Currently the sysfs gives a false negative on L1TF on CPUs that I verified to be vulnerable, a Power9 Talos II Boston 004e 1202, PowerNV T2P9D01.
Signed-off-by: Anthony Steinhauser asteinhauser@google.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au [mpe: Just have cpu_show_l1tf() call cpu_show_meltdown() directly] Link: https://lore.kernel.org/r/20191029190759.84821-1-asteinhauser@google.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/kernel/security.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c index a5c5940d970a..a4354c4f6bc5 100644 --- a/arch/powerpc/kernel/security.c +++ b/arch/powerpc/kernel/security.c @@ -160,6 +160,11 @@ ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, cha
return sprintf(buf, "Vulnerable\n"); } + +ssize_t cpu_show_l1tf(struct device *dev, struct device_attribute *attr, char *buf) +{ + return cpu_show_meltdown(dev, attr, buf); +} #endif
ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr, char *buf)
From: Aneesh Kumar K.V aneesh.kumar@linux.ibm.com
[ Upstream commit 16f6b67cf03cb43db7104acb2ca877bdc2606c92 ]
With large memory (8TB and more) hotplug, we can get soft lockup warnings as below. These were caused by a long loop without any explicit cond_resched which is a problem for !PREEMPT kernels.
Avoid this using cond_resched() while inserting hash page table entries. We already do similar cond_resched() in __add_pages(), see commit f64ac5e6e306 ("mm, memory_hotplug: add scheduling point to __add_pages").
rcu: 3-....: (24002 ticks this GP) idle=13e/1/0x4000000000000002 softirq=722/722 fqs=12001 (t=24003 jiffies g=4285 q=2002) NMI backtrace for cpu 3 CPU: 3 PID: 3870 Comm: ndctl Not tainted 5.3.0-197.18-default+ #2 Call Trace: dump_stack+0xb0/0xf4 (unreliable) nmi_cpu_backtrace+0x124/0x130 nmi_trigger_cpumask_backtrace+0x1ac/0x1f0 arch_trigger_cpumask_backtrace+0x28/0x3c rcu_dump_cpu_stacks+0xf8/0x154 rcu_sched_clock_irq+0x878/0xb40 update_process_times+0x48/0x90 tick_sched_handle.isra.16+0x4c/0x80 tick_sched_timer+0x68/0xe0 __hrtimer_run_queues+0x180/0x430 hrtimer_interrupt+0x110/0x300 timer_interrupt+0x108/0x2f0 decrementer_common+0x114/0x120 --- interrupt: 901 at arch_add_memory+0xc0/0x130 LR = arch_add_memory+0x74/0x130 memremap_pages+0x494/0x650 devm_memremap_pages+0x3c/0xa0 pmem_attach_disk+0x188/0x750 nvdimm_bus_probe+0xac/0x2c0 really_probe+0x148/0x570 driver_probe_device+0x19c/0x1d0 device_driver_attach+0xcc/0x100 bind_store+0x134/0x1c0 drv_attr_store+0x44/0x60 sysfs_kf_write+0x64/0x90 kernfs_fop_write+0x1a0/0x270 __vfs_write+0x3c/0x70 vfs_write+0xd0/0x260 ksys_write+0xdc/0x130 system_call+0x5c/0x68
Signed-off-by: Aneesh Kumar K.V aneesh.kumar@linux.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20191001084656.31277-1-aneesh.kumar@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/mm/hash_utils_64.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 11b41383e167..8894c8f300ea 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -307,6 +307,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend, if (ret < 0) break;
+ cond_resched(); #ifdef CONFIG_DEBUG_PAGEALLOC if (debug_pagealloc_enabled() && (paddr >> PAGE_SHIFT) < linear_map_hash_count)
From: Matthew Bobrowski mbobrowski@mbobrowski.org
[ Upstream commit 548feebec7e93e58b647dba70b3303dcb569c914 ]
This patch updates the lock pattern in ext4_direct_IO_read() to not block on inode lock in cases of IOCB_NOWAIT direct I/O reads. The locking condition implemented here is similar to that of 942491c9e6d6 ("xfs: fix AIM7 regression").
Fixes: 16c54688592c ("ext4: Allow parallel DIO reads") Signed-off-by: Matthew Bobrowski mbobrowski@mbobrowski.org Reviewed-by: Jan Kara jack@suse.cz Reviewed-by: Ritesh Harjani riteshh@linux.ibm.com Link: https://lore.kernel.org/r/c5d5e759f91747359fbd2c6f9a36240cf75ad79f.157294932... Signed-off-by: Theodore Ts'o tytso@mit.edu Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ext4/inode.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 215802cbc42b..00d0c4b8fa30 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3848,7 +3848,13 @@ static ssize_t ext4_direct_IO_read(struct kiocb *iocb, struct iov_iter *iter) * writes & truncates and since we take care of writing back page cache, * we are protected against page writeback as well. */ - inode_lock_shared(inode); + if (iocb->ki_flags & IOCB_NOWAIT) { + if (!inode_trylock_shared(inode)) + return -EAGAIN; + } else { + inode_lock_shared(inode); + } + ret = filemap_write_and_wait_range(mapping, iocb->ki_pos, iocb->ki_pos + count - 1); if (ret)
From: Matthew Bobrowski mbobrowski@mbobrowski.org
[ Upstream commit 2e9b51d78229d5145725a481bb5464ebc0a3f9b2 ]
This patch addresses what Dave Chinner had discovered and fixed within commit: 7684e2c4384d. This changes does not have any user visible impact for ext4 as none of the current users of ext4_iomap_begin() that extend files depend on IOMAP_F_DIRTY.
When doing a direct IO that spans the current EOF, and there are written blocks beyond EOF that extend beyond the current write, the only metadata update that needs to be done is a file size extension.
However, we don't mark such iomaps as IOMAP_F_DIRTY to indicate that there is IO completion metadata updates required, and hence we may fail to correctly sync file size extensions made in IO completion when O_DSYNC writes are being used and the hardware supports FUA.
Hence when setting IOMAP_F_DIRTY, we need to also take into account whether the iomap spans the current EOF. If it does, then we need to mark it dirty so that IO completion will call generic_write_sync() to flush the inode size update to stable storage correctly.
Signed-off-by: Matthew Bobrowski mbobrowski@mbobrowski.org Reviewed-by: Jan Kara jack@suse.cz Reviewed-by: Ritesh Harjani riteshh@linux.ibm.com Link: https://lore.kernel.org/r/8b43ee9ee94bee5328da56ba0909b7d2229ef150.157294932... Signed-off-by: Theodore Ts'o tytso@mit.edu Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ext4/inode.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 00d0c4b8fa30..950e3dcff7b0 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3544,8 +3544,14 @@ retry: return ret; }
+ /* + * Writes that span EOF might trigger an I/O size update on completion, + * so consider them to be dirty for the purposes of O_DSYNC, even if + * there is no other metadata changes being made or are pending here. + */ iomap->flags = 0; - if (ext4_inode_datasync_dirty(inode)) + if (ext4_inode_datasync_dirty(inode) || + offset + length > i_size_read(inode)) iomap->flags |= IOMAP_F_DIRTY; iomap->bdev = inode->i_sb->s_bdev; iomap->dax_dev = sbi->s_daxdev;
From: Jan Kara jack@suse.cz
[ Upstream commit 015c6033068208d6227612c878877919f3fcf6b6 ]
jbd2 statistics counting number of blocks logged in a transaction was wrong. It didn't count the commit block and more importantly it didn't count revoke descriptor blocks. Make sure these get properly counted.
Reviewed-by: Theodore Ts'o tytso@mit.edu Signed-off-by: Jan Kara jack@suse.cz Link: https://lore.kernel.org/r/20191105164437.32602-13-jack@suse.cz Signed-off-by: Theodore Ts'o tytso@mit.edu Signed-off-by: Sasha Levin sashal@kernel.org --- fs/jbd2/commit.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 24f86ffe11d7..020bd7a0d8e0 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -724,7 +724,6 @@ start_journal_io: submit_bh(REQ_OP_WRITE, REQ_SYNC, bh); } cond_resched(); - stats.run.rs_blocks_logged += bufs;
/* Force a new descriptor to be generated next time round the loop. */ @@ -811,6 +810,7 @@ start_journal_io: if (unlikely(!buffer_uptodate(bh))) err = -EIO; jbd2_unfile_log_bh(bh); + stats.run.rs_blocks_logged++;
/* * The list contains temporary buffer heads created by @@ -856,6 +856,7 @@ start_journal_io: BUFFER_TRACE(bh, "ph5: control buffer writeout done: unfile"); clear_buffer_jwrite(bh); jbd2_unfile_log_bh(bh); + stats.run.rs_blocks_logged++; __brelse(bh); /* One for getblk */ /* AKPM: bforget here */ } @@ -877,6 +878,7 @@ start_journal_io: } if (cbh) err = journal_wait_on_commit_record(journal, cbh); + stats.run.rs_blocks_logged++; if (jbd2_has_feature_async_commit(journal) && journal->j_flags & JBD2_BARRIER) { blkdev_issue_flush(journal->j_dev, GFP_NOFS, NULL);
From: Bart Van Assche bvanassche@acm.org
[ Upstream commit f6b8540f40201bff91062dd64db8e29e4ddaaa9d ]
According to SBC-2 a TRANSFER LENGTH field of zero means that 256 logical blocks must be transferred. Make the SCSI tracing code follow SBC-2.
Fixes: bf8162354233 ("[SCSI] add scsi trace core functions and put trace points") Cc: Christoph Hellwig hch@lst.de Cc: Hannes Reinecke hare@suse.com Cc: Douglas Gilbert dgilbert@interlog.com Link: https://lore.kernel.org/r/20191105215553.185018-1-bvanassche@acm.org Signed-off-by: Bart Van Assche bvanassche@acm.org Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/scsi_trace.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/scsi_trace.c b/drivers/scsi/scsi_trace.c index 0ff083bbf5b1..617a60737590 100644 --- a/drivers/scsi/scsi_trace.c +++ b/drivers/scsi/scsi_trace.c @@ -30,15 +30,18 @@ static const char * scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p); - sector_t lba = 0, txlen = 0; + u32 lba = 0, txlen;
lba |= ((cdb[1] & 0x1F) << 16); lba |= (cdb[2] << 8); lba |= cdb[3]; - txlen = cdb[4]; + /* + * From SBC-2: a TRANSFER LENGTH field set to zero specifies that 256 + * logical blocks shall be read (READ(6)) or written (WRITE(6)). + */ + txlen = cdb[4] ? cdb[4] : 256;
- trace_seq_printf(p, "lba=%llu txlen=%llu", - (unsigned long long)lba, (unsigned long long)txlen); + trace_seq_printf(p, "lba=%u txlen=%u", lba, txlen); trace_seq_putc(p, 0);
return ret;
From: James Smart jsmart2021@gmail.com
[ Upstream commit 7cfd5639d99bec0d27af089d0c8c114330e43a72 ]
If the driver receives a login that is later then LOGO'd by the remote port (aka ndlp), the driver, upon the completion of the LOGO ACC transmission, will logout the node and unregister the rpi that is being used for the node. As part of the unreg, the node's rpi value is replaced by the LPFC_RPI_ALLOC_ERROR value. If the port is subsequently offlined, the offline walks the nodes and ensures they are logged out, which possibly entails unreg'ing their rpi values. This path does not validate the node's rpi value, thus doesn't detect that it has been unreg'd already. The replaced rpi value is then used when accessing the rpi bitmask array which tracks active rpi values. As the LPFC_RPI_ALLOC_ERROR value is not a valid index for the bitmask, it may fault the system.
Revise the rpi release code to detect when the rpi value is the replaced RPI_ALLOC_ERROR value and ignore further release steps.
Link: https://lore.kernel.org/r/20191105005708.7399-2-jsmart2021@gmail.com Signed-off-by: Dick Kennedy dick.kennedy@broadcom.com Signed-off-by: James Smart jsmart2021@gmail.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/lpfc/lpfc_sli.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index bd555f886d27..a801917d3c19 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -17867,6 +17867,13 @@ lpfc_sli4_alloc_rpi(struct lpfc_hba *phba) static void __lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi) { + /* + * if the rpi value indicates a prior unreg has already + * been done, skip the unreg. + */ + if (rpi == LPFC_RPI_ALLOC_ERROR) + return; + if (test_and_clear_bit(rpi, phba->sli4_hba.rpi_bmask)) { phba->sli4_hba.rpi_count--; phba->sli4_hba.max_cfg_param.rpi_used--;
From: Chao Yu yuchao0@huawei.com
[ Upstream commit 2a60637f06ac94869b2e630eaf837110d39bf291 ]
As Eric reported:
RENAME_EXCHANGE support was just added to fsstress in xfstests:
commit 65dfd40a97b6bbbd2a22538977bab355c5bc0f06 Author: kaixuxia xiakaixu1987@gmail.com Date: Thu Oct 31 14:41:48 2019 +0800
fsstress: add EXCHANGE renameat2 support
This is causing xfstest generic/579 to fail due to fsck.f2fs reporting errors. I'm not sure what the problem is, but it still happens even with all the fs-verity stuff in the test commented out, so that the test just runs fsstress.
generic/579 23s ... [10:02:25] [ 7.745370] run fstests generic/579 at 2019-11-04 10:02:25 _check_generic_filesystem: filesystem on /dev/vdc is inconsistent (see /results/f2fs/results-default/generic/579.full for details) [10:02:47] Ran: generic/579 Failures: generic/579 Failed 1 of 1 tests Xunit report: /results/f2fs/results-default/result.xml
Here's the contents of 579.full:
_check_generic_filesystem: filesystem on /dev/vdc is inconsistent *** fsck.f2fs output *** [ASSERT] (__chk_dots_dentries:1378) --> Bad inode number[0x24] for '..', parent parent ino is [0xd10]
The root cause is that we forgot to update directory's i_pino during cross_rename, fix it.
Fixes: 32f9bc25cbda0 ("f2fs: support ->rename2()") Signed-off-by: Chao Yu yuchao0@huawei.com Tested-by: Eric Biggers ebiggers@kernel.org Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/f2fs/namei.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 6b23dcbf52f4..0ace2c2e3de9 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -948,7 +948,8 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, if (!old_dir_entry || whiteout) file_lost_pino(old_inode); else - F2FS_I(old_inode)->i_pino = new_dir->i_ino; + /* adjust dir's i_pino to pass fsck check */ + f2fs_i_pino_write(old_inode, new_dir->i_ino); up_write(&F2FS_I(old_inode)->i_sem);
old_inode->i_ctime = current_time(old_inode); @@ -1103,7 +1104,11 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, f2fs_set_link(old_dir, old_entry, old_page, new_inode);
down_write(&F2FS_I(old_inode)->i_sem); - file_lost_pino(old_inode); + if (!old_dir_entry) + file_lost_pino(old_inode); + else + /* adjust dir's i_pino to pass fsck check */ + f2fs_i_pino_write(old_inode, new_dir->i_ino); up_write(&F2FS_I(old_inode)->i_sem);
old_dir->i_ctime = current_time(old_dir); @@ -1118,7 +1123,11 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, f2fs_set_link(new_dir, new_entry, new_page, old_inode);
down_write(&F2FS_I(new_inode)->i_sem); - file_lost_pino(new_inode); + if (!new_dir_entry) + file_lost_pino(new_inode); + else + /* adjust dir's i_pino to pass fsck check */ + f2fs_i_pino_write(new_inode, old_dir->i_ino); up_write(&F2FS_I(new_inode)->i_sem);
new_dir->i_ctime = current_time(new_dir);
From: Jeffrey Hugo jeffrey.l.hugo@gmail.com
[ Upstream commit efd164b5520afd6fb2883b68e0d408a7de29c491 ]
Some RCGs (the gfx_3d_src_clk in msm8998 for example) are basically just some constant ratio from the input across the entire frequency range. It would be great if we could specify the frequency table as a single entry constant ratio instead of a long list, ie:
{ .src = P_GPUPLL0_OUT_EVEN, .pre_div = 3 }, { }
So, lets support that.
We need to fix a corner case in qcom_find_freq() where if the freq table is non-null, but has no frequencies, we end up returning an "entry" before the table array, which is bad. Then, we need ignore the freq from the table, and instead base everything on the requested freq.
Suggested-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Jeffrey Hugo jeffrey.l.hugo@gmail.com Link: https://lkml.kernel.org/r/20191031185715.15504-1-jeffrey.l.hugo@gmail.com Signed-off-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/qcom/clk-rcg2.c | 2 ++ drivers/clk/qcom/common.c | 3 +++ 2 files changed, 5 insertions(+)
diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c index 52208d4165f4..51b2388d80ac 100644 --- a/drivers/clk/qcom/clk-rcg2.c +++ b/drivers/clk/qcom/clk-rcg2.c @@ -206,6 +206,8 @@ static int _freq_tbl_determine_rate(struct clk_hw *hw, const struct freq_tbl *f, if (clk_flags & CLK_SET_RATE_PARENT) { rate = f->freq; if (f->pre_div) { + if (!rate) + rate = req->rate; rate /= 2; rate *= f->pre_div + 1; } diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c index db9b2471ac40..bfb6d6065a90 100644 --- a/drivers/clk/qcom/common.c +++ b/drivers/clk/qcom/common.c @@ -29,6 +29,9 @@ struct freq_tbl *qcom_find_freq(const struct freq_tbl *f, unsigned long rate) if (!f) return NULL;
+ if (!f->freq) + return f; + for (; f->freq; f++) if (rate <= f->freq) return f;
From: Michael Hennerich michael.hennerich@analog.com
[ Upstream commit fc59462c5ce60da119568fac325c92fc6b7c6175 ]
For an external clock source, which is gated via a GPIO, the rate change should typically be propagated to the parent clock.
The situation where we are requiring this propagation, is when an external clock is connected to override an internal clock (which typically has a fixed rate). The external clock can have a different rate than the internal one, and may also be variable, thus requiring the rate propagation.
This rate change wasn't propagated until now, and it's unclear about cases where this shouldn't be propagated. Thus, it's unclear whether this is fixing a bug, or extending the current driver behavior. Also, it's unsure about whether this may break any existing setups; in the case that it does, a device-tree property may be added to disable this flag.
Signed-off-by: Michael Hennerich michael.hennerich@analog.com Signed-off-by: Alexandru Ardelean alexandru.ardelean@analog.com Link: https://lkml.kernel.org/r/20191108071718.17985-1-alexandru.ardelean@analog.c... Signed-off-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/clk-gpio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/clk/clk-gpio.c b/drivers/clk/clk-gpio.c index 40af4fbab4d2..af9cc00d2d92 100644 --- a/drivers/clk/clk-gpio.c +++ b/drivers/clk/clk-gpio.c @@ -248,7 +248,7 @@ static int gpio_clk_driver_probe(struct platform_device *pdev) else clk = clk_register_gpio_gate(&pdev->dev, node->name, parent_names ? parent_names[0] : NULL, gpiod, - 0); + CLK_SET_RATE_PARENT); if (IS_ERR(clk)) return PTR_ERR(clk);
Hi!
Changelog explains author is not sure if this will break existing setups:
This rate change wasn't propagated until now, and it's unclear about cases where this shouldn't be propagated. Thus, it's unclear whether this is fixing a bug, or extending the current driver behavior. Also, it's unsure about whether this may break any existing setups; in the case that it does, a device-tree property may be added to disable this flag.
I don't see explanation how this fixes any user bug, so this may not be good patch for stable?
Best regards, Pavel
From: Florian Fainelli f.fainelli@gmail.com
[ Upstream commit 27eebb60357ed5aa6659442f92907c0f7368d6ae ]
If the 'brcm,irq-can-wake' property is specified, make sure we also enable the corresponding parent interrupt we are attached to.
Signed-off-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: Marc Zyngier maz@kernel.org Link: https://lore.kernel.org/r/20191024201415.23454-4-f.fainelli@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/irqchip/irq-bcm7038-l1.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/irqchip/irq-bcm7038-l1.c b/drivers/irqchip/irq-bcm7038-l1.c index 0f6e30e9009d..f53dfc5aa7c5 100644 --- a/drivers/irqchip/irq-bcm7038-l1.c +++ b/drivers/irqchip/irq-bcm7038-l1.c @@ -284,6 +284,10 @@ static int __init bcm7038_l1_init_one(struct device_node *dn, pr_err("failed to map parent interrupt %d\n", parent_irq); return -EINVAL; } + + if (of_property_read_bool(dn, "brcm,irq-can-wake")) + enable_irq_wake(parent_irq); + irq_set_chained_handler_and_data(parent_irq, bcm7038_l1_irq_handle, intc);
From: Paul Cercueil paul@crapouillou.net
[ Upstream commit 52ecc87642f273a599c9913b29fd179c13de457b ]
If we cannot create the IRQ domain, the driver should fail to probe instead of succeeding with just a warning message.
Signed-off-by: Paul Cercueil paul@crapouillou.net Signed-off-by: Marc Zyngier maz@kernel.org Link: https://lore.kernel.org/r/1570015525-27018-3-git-send-email-zhouyanjie@zoho.... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/irqchip/irq-ingenic.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/irqchip/irq-ingenic.c b/drivers/irqchip/irq-ingenic.c index 2ff08986b536..be6923abf9a4 100644 --- a/drivers/irqchip/irq-ingenic.c +++ b/drivers/irqchip/irq-ingenic.c @@ -117,6 +117,14 @@ static int __init ingenic_intc_of_init(struct device_node *node, goto out_unmap_irq; }
+ domain = irq_domain_add_legacy(node, num_chips * 32, + JZ4740_IRQ_BASE, 0, + &irq_domain_simple_ops, NULL); + if (!domain) { + err = -ENOMEM; + goto out_unmap_base; + } + for (i = 0; i < num_chips; i++) { /* Mask all irqs */ writel(0xffffffff, intc->base + (i * CHIP_SIZE) + @@ -143,14 +151,11 @@ static int __init ingenic_intc_of_init(struct device_node *node, IRQ_NOPROBE | IRQ_LEVEL); }
- domain = irq_domain_add_legacy(node, num_chips * 32, JZ4740_IRQ_BASE, 0, - &irq_domain_simple_ops, NULL); - if (!domain) - pr_warn("unable to register IRQ domain\n"); - setup_irq(parent_irq, &intc_cascade_action); return 0;
+out_unmap_base: + iounmap(intc->base); out_unmap_irq: irq_dispose_mapping(parent_irq); out_free:
From: Lee Jones lee.jones@linaro.org
[ Upstream commit 6b5c350648b857047b47acf74a57087ad27d6183 ]
Until now, MFD has assumed all child devices passed to it (via mfd_cells) are to be registered. It does not take into account requests from Device Tree and the like to disable child devices on a per-platform basis.
Well now it does.
Link: https://www.spinics.net/lists/arm-kernel/msg366309.html Link: https://lkml.org/lkml/2019/8/22/1350
Reported-by: Barry Song Baohua.Song@csr.com Reported-by: Stephan Gerhold stephan@gerhold.net Reviewed-by: Daniel Thompson daniel.thompson@linaro.org Reviewed-by: Mark Brown broonie@kernel.org Tested-by: Stephan Gerhold stephan@gerhold.net Signed-off-by: Lee Jones lee.jones@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mfd/mfd-core.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c index 182973df1aed..99a9c5c56ea9 100644 --- a/drivers/mfd/mfd-core.c +++ b/drivers/mfd/mfd-core.c @@ -178,6 +178,11 @@ static int mfd_add_device(struct device *parent, int id, if (parent->of_node && cell->of_compatible) { for_each_child_of_node(parent->of_node, np) { if (of_device_is_compatible(np, cell->of_compatible)) { + if (!of_device_is_available(np)) { + /* Ignore disabled devices error free */ + ret = 0; + goto fail_alias; + } pdev->dev.of_node = np; pdev->dev.fwnode = &np->fwnode; break;
From: Konstantin Khlebnikov khlebnikov@yandex-team.ru
[ Upstream commit 6fcbcec9cfc7b3c6a2c1f1a23ebacedff7073e0a ]
Quota statistics counted as 64-bit per-cpu counter. Reading sums per-cpu fractions as signed 64-bit int, filters negative values and then reports lower half as signed 32-bit int.
Result may looks like:
fs.quota.allocated_dquots = 22327 fs.quota.cache_hits = -489852115 fs.quota.drops = -487288718 fs.quota.free_dquots = 22083 fs.quota.lookups = -486883485 fs.quota.reads = 22327 fs.quota.syncs = 335064 fs.quota.writes = 3088689
Values bigger than 2^31-1 reported as negative.
All counters except "allocated_dquots" and "free_dquots" are monotonic, thus they should be reported as is without filtering negative values.
Kernel doesn't have generic helper for 64-bit sysctl yet, let's use at least unsigned long.
Link: https://lore.kernel.org/r/157337934693.2078.9842146413181153727.stgit@buzz Signed-off-by: Konstantin Khlebnikov khlebnikov@yandex-team.ru Signed-off-by: Jan Kara jack@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- fs/quota/dquot.c | 29 +++++++++++++++++------------ include/linux/quota.h | 2 +- 2 files changed, 18 insertions(+), 13 deletions(-)
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 59b00d8db22c..154f175066b3 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -2853,68 +2853,73 @@ EXPORT_SYMBOL(dquot_quotactl_sysfile_ops); static int do_proc_dqstats(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { - unsigned int type = (int *)table->data - dqstats.stat; + unsigned int type = (unsigned long *)table->data - dqstats.stat; + s64 value = percpu_counter_sum(&dqstats.counter[type]); + + /* Filter negative values for non-monotonic counters */ + if (value < 0 && (type == DQST_ALLOC_DQUOTS || + type == DQST_FREE_DQUOTS)) + value = 0;
/* Update global table */ - dqstats.stat[type] = - percpu_counter_sum_positive(&dqstats.counter[type]); - return proc_dointvec(table, write, buffer, lenp, ppos); + dqstats.stat[type] = value; + return proc_doulongvec_minmax(table, write, buffer, lenp, ppos); }
static struct ctl_table fs_dqstats_table[] = { { .procname = "lookups", .data = &dqstats.stat[DQST_LOOKUPS], - .maxlen = sizeof(int), + .maxlen = sizeof(unsigned long), .mode = 0444, .proc_handler = do_proc_dqstats, }, { .procname = "drops", .data = &dqstats.stat[DQST_DROPS], - .maxlen = sizeof(int), + .maxlen = sizeof(unsigned long), .mode = 0444, .proc_handler = do_proc_dqstats, }, { .procname = "reads", .data = &dqstats.stat[DQST_READS], - .maxlen = sizeof(int), + .maxlen = sizeof(unsigned long), .mode = 0444, .proc_handler = do_proc_dqstats, }, { .procname = "writes", .data = &dqstats.stat[DQST_WRITES], - .maxlen = sizeof(int), + .maxlen = sizeof(unsigned long), .mode = 0444, .proc_handler = do_proc_dqstats, }, { .procname = "cache_hits", .data = &dqstats.stat[DQST_CACHE_HITS], - .maxlen = sizeof(int), + .maxlen = sizeof(unsigned long), .mode = 0444, .proc_handler = do_proc_dqstats, }, { .procname = "allocated_dquots", .data = &dqstats.stat[DQST_ALLOC_DQUOTS], - .maxlen = sizeof(int), + .maxlen = sizeof(unsigned long), .mode = 0444, .proc_handler = do_proc_dqstats, }, { .procname = "free_dquots", .data = &dqstats.stat[DQST_FREE_DQUOTS], - .maxlen = sizeof(int), + .maxlen = sizeof(unsigned long), .mode = 0444, .proc_handler = do_proc_dqstats, }, { .procname = "syncs", .data = &dqstats.stat[DQST_SYNCS], - .maxlen = sizeof(int), + .maxlen = sizeof(unsigned long), .mode = 0444, .proc_handler = do_proc_dqstats, }, diff --git a/include/linux/quota.h b/include/linux/quota.h index f32dd270b8e3..27aab84fcbaa 100644 --- a/include/linux/quota.h +++ b/include/linux/quota.h @@ -263,7 +263,7 @@ enum { };
struct dqstats { - int stat[_DQST_DQSTAT_LAST]; + unsigned long stat[_DQST_DQSTAT_LAST]; struct percpu_counter counter[_DQST_DQSTAT_LAST]; };
From: James Smart jsmart2021@gmail.com
[ Upstream commit 6c6d59e0fe5b86cf273d6d744a6a9768c4ecc756 ]
Coverity reported the following:
*** CID 101747: Null pointer dereferences (FORWARD_NULL) /drivers/scsi/lpfc/lpfc_els.c: 4439 in lpfc_cmpl_els_rsp() 4433 kfree(mp); 4434 } 4435 mempool_free(mbox, phba->mbox_mem_pool); 4436 } 4437 out: 4438 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { vvv CID 101747: Null pointer dereferences (FORWARD_NULL) vvv Dereferencing null pointer "shost". 4439 spin_lock_irq(shost->host_lock); 4440 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI); 4441 spin_unlock_irq(shost->host_lock); 4442 4443 /* If the node is not being used by another discovery thread, 4444 * and we are sending a reject, we are done with it.
Fix by adding a check for non-null shost in line 4438. The scenario when shost is set to null is when ndlp is null. As such, the ndlp check present was sufficient. But better safe than sorry so add the shost check.
Reported-by: coverity-bot keescook+coverity-bot@chromium.org Addresses-Coverity-ID: 101747 ("Null pointer dereferences") Fixes: 2e0fef85e098 ("[SCSI] lpfc: NPIV: split ports")
CC: James Bottomley James.Bottomley@SteelEye.com CC: "Gustavo A. R. Silva" gustavo@embeddedor.com CC: linux-next@vger.kernel.org Link: https://lore.kernel.org/r/20191111230401.12958-3-jsmart2021@gmail.com Reviewed-by: Ewan D. Milne emilne@redhat.com Signed-off-by: Dick Kennedy dick.kennedy@broadcom.com Signed-off-by: James Smart jsmart2021@gmail.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/lpfc/lpfc_els.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index 4f4d1b3b3bbc..7398350b08b4 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -4110,7 +4110,7 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, mempool_free(mbox, phba->mbox_mem_pool); } out: - if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { + if (ndlp && NLP_CHK_NODE_ACT(ndlp) && shost) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI); spin_unlock_irq(shost->host_lock);
From: Tyrel Datwyler tyreld@linux.ibm.com
[ Upstream commit 9723c25f99aff0451cfe6392e1b9fdd99d0bf9f0 ]
The first entry of the ibm,drc-info property is an int encoded count of the number of drc-info entries that follow. The "value" pointer returned by of_prop_next_u32() is still pointing at the this value when we call of_read_drc_info_cell(), but the helper function expects that value to be pointing at the first element of an entry.
Fix up by incrementing the "value" pointer to point at the first element of the first drc-info entry prior.
Signed-off-by: Tyrel Datwyler tyreld@linux.ibm.com Acked-by: Bjorn Helgaas bhelgaas@google.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/1573449697-5448-5-git-send-email-tyreld@linux.ibm.... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/hotplug/rpaphp_core.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index cc860c5f7d26..f56004243591 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -239,6 +239,8 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name, value = of_prop_next_u32(info, NULL, &entries); if (!value) return -EINVAL; + else + value++;
for (j = 0; j < entries; j++) { of_read_drc_info_cell(&info, &value, &drc);
From: Bean Huo beanhuo@micron.com
[ Upstream commit cfcbae3895b86c390ede57b2a8f601dd5972b47b ]
In function __ufshcd_query_descriptor(), in the event of an error happening, we directly goto out_unlock and forget to invaliate hba->dev_cmd.query.descriptor pointer. This results in this pointer still valid in ufshcd_copy_query_response() for other query requests which go through ufshcd_exec_raw_upiu_cmd(). This will cause __memcpy() crash and system hangs. Log as shown below:
Unable to handle kernel paging request at virtual address ffff000012233c40 Mem abort info: ESR = 0x96000047 Exception class = DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 Data abort info: ISV = 0, ISS = 0x00000047 CM = 0, WnR = 1 swapper pgtable: 4k pages, 48-bit VAs, pgdp = 0000000028cc735c [ffff000012233c40] pgd=00000000bffff003, pud=00000000bfffe003, pmd=00000000ba8b8003, pte=0000000000000000 Internal error: Oops: 96000047 [#2] PREEMPT SMP ... Call trace: __memcpy+0x74/0x180 ufshcd_issue_devman_upiu_cmd+0x250/0x3c0 ufshcd_exec_raw_upiu_cmd+0xfc/0x1a8 ufs_bsg_request+0x178/0x3b0 bsg_queue_rq+0xc0/0x118 blk_mq_dispatch_rq_list+0xb0/0x538 blk_mq_sched_dispatch_requests+0x18c/0x1d8 __blk_mq_run_hw_queue+0xb4/0x118 blk_mq_run_work_fn+0x28/0x38 process_one_work+0x1ec/0x470 worker_thread+0x48/0x458 kthread+0x130/0x138 ret_from_fork+0x10/0x1c Code: 540000ab a8c12027 a88120c7 a8c12027 (a88120c7) ---[ end trace 793e1eb5dff69f2d ]--- note: kworker/0:2H[2054] exited with preempt_count 1
This patch is to move "descriptor = NULL" down to below the label "out_unlock".
Fixes: d44a5f98bb49b2(ufs: query descriptor API) Link: https://lore.kernel.org/r/20191112223436.27449-3-huobean@gmail.com Reviewed-by: Alim Akhtar alim.akhtar@samsung.com Reviewed-by: Bart Van Assche bvanassche@acm.org Signed-off-by: Bean Huo beanhuo@micron.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/ufs/ufshcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 8bce755e0f5b..7510d8328d4d 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3011,10 +3011,10 @@ static int __ufshcd_query_descriptor(struct ufs_hba *hba, goto out_unlock; }
- hba->dev_cmd.query.descriptor = NULL; *buf_len = be16_to_cpu(response->upiu_res.length);
out_unlock: + hba->dev_cmd.query.descriptor = NULL; mutex_unlock(&hba->dev_cmd.lock); out: ufshcd_release(hba);
From: David Hildenbrand david@redhat.com
[ Upstream commit 7d8212747435c534c8d564fbef4541a463c976ff ]
When unloading the module, one gets ------------[ cut here ]------------ Device 'cmm0' does not have a release() function, it is broken and must be fixed. See Documentation/kobject.txt. WARNING: CPU: 0 PID: 19308 at drivers/base/core.c:1244 .device_release+0xcc/0xf0 ...
We only have one static fake device. There is nothing to do when releasing the device (via cmm_exit()).
Signed-off-by: David Hildenbrand david@redhat.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20191031142933.10779-2-david@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/platforms/pseries/cmm.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c index 25427a48feae..502ebcc6c3cb 100644 --- a/arch/powerpc/platforms/pseries/cmm.c +++ b/arch/powerpc/platforms/pseries/cmm.c @@ -425,6 +425,10 @@ static struct bus_type cmm_subsys = { .dev_name = "cmm", };
+static void cmm_release_device(struct device *dev) +{ +} + /** * cmm_sysfs_register - Register with sysfs * @@ -440,6 +444,7 @@ static int cmm_sysfs_register(struct device *dev)
dev->id = 0; dev->bus = &cmm_subsys; + dev->release = cmm_release_device;
if ((rc = device_register(dev))) goto subsys_unregister;
From: Tyrel Datwyler tyreld@linux.ibm.com
[ Upstream commit 52e2b0f16574afd082cff0f0e8567b2d9f68c033 ]
In the event that the partition is migrated to a platform with older firmware that doesn't support the ibm,drc-info property the device tree is modified to remove the ibm,drc-info property and replace it with the older style ibm,drc-* properties for types, names, indexes, and power-domains. One of the requirements of the drc-info firmware feature is that the client is able to handle both the new property, and old style properties at runtime. Therefore we can't rely on the firmware feature alone to dictate which property is currently present in the device tree.
Fix this short coming by checking explicitly for the ibm,drc-info property, and falling back to the older ibm,drc-* properties if it doesn't exist.
Signed-off-by: Tyrel Datwyler tyreld@linux.ibm.com Acked-by: Bjorn Helgaas bhelgaas@google.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/1573449697-5448-6-git-send-email-tyreld@linux.ibm.... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/hotplug/rpaphp_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index f56004243591..ccc6deeb9ccf 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -275,7 +275,7 @@ int rpaphp_check_drc_props(struct device_node *dn, char *drc_name, return -EINVAL; }
- if (firmware_has_feature(FW_FEATURE_DRC_INFO)) + if (of_find_property(dn->parent, "ibm,drc-info", NULL)) return rpaphp_check_drc_props_v2(dn, drc_name, drc_type, *my_index); else
From: Tyrel Datwyler tyreld@linux.ibm.com
[ Upstream commit 0737686778c6dbe0908d684dd5b9c05b127526ba ]
The device tree is in big endian format and any properties directly retrieved using OF helpers that don't explicitly byte swap should be annotated. In particular there are several places where we grab the opaque property value for the old ibm,drc-* properties and the ibm,my-drc-index property.
Fix this for better static checking by annotating values we know to explicitly big endian, and byte swap where appropriate.
Signed-off-by: Tyrel Datwyler tyreld@linux.ibm.com Acked-by: Bjorn Helgaas bhelgaas@google.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/1573449697-5448-9-git-send-email-tyreld@linux.ibm.... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/hotplug/rpaphp_core.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-)
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index ccc6deeb9ccf..7d74fe875225 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -154,11 +154,11 @@ static enum pci_bus_speed get_max_bus_speed(struct slot *slot) return speed; }
-static int get_children_props(struct device_node *dn, const int **drc_indexes, - const int **drc_names, const int **drc_types, - const int **drc_power_domains) +static int get_children_props(struct device_node *dn, const __be32 **drc_indexes, + const __be32 **drc_names, const __be32 **drc_types, + const __be32 **drc_power_domains) { - const int *indexes, *names, *types, *domains; + const __be32 *indexes, *names, *types, *domains;
indexes = of_get_property(dn, "ibm,drc-indexes", NULL); names = of_get_property(dn, "ibm,drc-names", NULL); @@ -194,8 +194,8 @@ static int rpaphp_check_drc_props_v1(struct device_node *dn, char *drc_name, char *drc_type, unsigned int my_index) { char *name_tmp, *type_tmp; - const int *indexes, *names; - const int *types, *domains; + const __be32 *indexes, *names; + const __be32 *types, *domains; int i, rc;
rc = get_children_props(dn->parent, &indexes, &names, &types, &domains); @@ -208,7 +208,7 @@ static int rpaphp_check_drc_props_v1(struct device_node *dn, char *drc_name,
/* Iterate through parent properties, looking for my-drc-index */ for (i = 0; i < be32_to_cpu(indexes[0]); i++) { - if ((unsigned int) indexes[i + 1] == my_index) + if (be32_to_cpu(indexes[i + 1]) == my_index) break;
name_tmp += (strlen(name_tmp) + 1); @@ -267,7 +267,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name, int rpaphp_check_drc_props(struct device_node *dn, char *drc_name, char *drc_type) { - const unsigned int *my_index; + const __be32 *my_index;
my_index = of_get_property(dn, "ibm,my-drc-index", NULL); if (!my_index) { @@ -277,10 +277,10 @@ int rpaphp_check_drc_props(struct device_node *dn, char *drc_name,
if (of_find_property(dn->parent, "ibm,drc-info", NULL)) return rpaphp_check_drc_props_v2(dn, drc_name, drc_type, - *my_index); + be32_to_cpu(*my_index)); else return rpaphp_check_drc_props_v1(dn, drc_name, drc_type, - *my_index); + be32_to_cpu(*my_index)); } EXPORT_SYMBOL_GPL(rpaphp_check_drc_props);
@@ -311,10 +311,11 @@ static int is_php_type(char *drc_type) * for built-in pci slots (even when the built-in slots are * dlparable.) */ -static int is_php_dn(struct device_node *dn, const int **indexes, - const int **names, const int **types, const int **power_domains) +static int is_php_dn(struct device_node *dn, const __be32 **indexes, + const __be32 **names, const __be32 **types, + const __be32 **power_domains) { - const int *drc_types; + const __be32 *drc_types; int rc;
rc = get_children_props(dn, indexes, names, &drc_types, power_domains); @@ -349,7 +350,7 @@ int rpaphp_add_slot(struct device_node *dn) struct slot *slot; int retval = 0; int i; - const int *indexes, *names, *types, *power_domains; + const __be32 *indexes, *names, *types, *power_domains; char *name, *type;
if (!dn->name || strcmp(dn->name, "pci"))
From: Tyrel Datwyler tyreld@linux.ibm.com
[ Upstream commit 4f9f2d3d7a434b7f882b72550194c9278f4a3925 ]
The newer ibm,drc-info property is a condensed description of the old ibm,drc-* properties (ie. names, types, indexes, and power-domains). When matching a drc-index to a drc-name we need to verify that the index is within the start and last drc-index range and map it to a drc-name using the drc-name-prefix and logical index.
Fix the mapping by checking that the index is within the range of the current drc-info entry, and build the name from the drc-name-prefix concatenated with the starting drc-name-suffix value and the sequential index obtained by subtracting ibm,my-drc-index from this entries drc-start-index.
Signed-off-by: Tyrel Datwyler tyreld@linux.ibm.com Acked-by: Bjorn Helgaas bhelgaas@google.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/1573449697-5448-10-git-send-email-tyreld@linux.ibm... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/hotplug/rpaphp_core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index 7d74fe875225..a306cad70470 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -248,9 +248,10 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name, /* Should now know end of current entry */
/* Found it */ - if (my_index <= drc.last_drc_index) { + if (my_index >= drc.drc_index_start && my_index <= drc.last_drc_index) { + int index = my_index - drc.drc_index_start; sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix, - my_index); + drc.drc_name_suffix_start + index); break; } }
From: Gustavo L. F. Walbon gwalbon@linux.ibm.com
[ Upstream commit 4e706af3cd8e1d0503c25332b30cad33c97ed442 ]
The issue was showing "Mitigation" message via sysfs whatever the state of "RFI Flush", but it should show "Vulnerable" when it is disabled.
If you have "L1D private" feature enabled and not "RFI Flush" you are vulnerable to meltdown attacks.
"RFI Flush" is the key feature to mitigate the meltdown whatever the "L1D private" state.
SEC_FTR_L1D_THREAD_PRIV is a feature for Power9 only.
So the message should be as the truth table shows:
CPU | L1D private | RFI Flush | sysfs ----|-------------|-----------|------------------------------------- P9 | False | False | Vulnerable P9 | False | True | Mitigation: RFI Flush P9 | True | False | Vulnerable: L1D private per thread P9 | True | True | Mitigation: RFI Flush, L1D private per thread P8 | False | False | Vulnerable P8 | False | True | Mitigation: RFI Flush
Output before this fix: # cat /sys/devices/system/cpu/vulnerabilities/meltdown Mitigation: RFI Flush, L1D private per thread # echo 0 > /sys/kernel/debug/powerpc/rfi_flush # cat /sys/devices/system/cpu/vulnerabilities/meltdown Mitigation: L1D private per thread
Output after fix: # cat /sys/devices/system/cpu/vulnerabilities/meltdown Mitigation: RFI Flush, L1D private per thread # echo 0 > /sys/kernel/debug/powerpc/rfi_flush # cat /sys/devices/system/cpu/vulnerabilities/meltdown Vulnerable: L1D private per thread
Signed-off-by: Gustavo L. F. Walbon gwalbon@linux.ibm.com Signed-off-by: Mauro S. M. Rodrigues maurosr@linux.vnet.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20190502210907.42375-1-gwalbon@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/kernel/security.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c index a4354c4f6bc5..6a3dde9587cc 100644 --- a/arch/powerpc/kernel/security.c +++ b/arch/powerpc/kernel/security.c @@ -134,26 +134,22 @@ ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, cha
thread_priv = security_ftr_enabled(SEC_FTR_L1D_THREAD_PRIV);
- if (rfi_flush || thread_priv) { + if (rfi_flush) { struct seq_buf s; seq_buf_init(&s, buf, PAGE_SIZE - 1);
- seq_buf_printf(&s, "Mitigation: "); - - if (rfi_flush) - seq_buf_printf(&s, "RFI Flush"); - - if (rfi_flush && thread_priv) - seq_buf_printf(&s, ", "); - + seq_buf_printf(&s, "Mitigation: RFI Flush"); if (thread_priv) - seq_buf_printf(&s, "L1D private per thread"); + seq_buf_printf(&s, ", L1D private per thread");
seq_buf_printf(&s, "\n");
return s.len; }
+ if (thread_priv) + return sprintf(buf, "Vulnerable: L1D private per thread\n"); + if (!security_ftr_enabled(SEC_FTR_L1D_FLUSH_HV) && !security_ftr_enabled(SEC_FTR_L1D_FLUSH_PR)) return sprintf(buf, "Not affected\n");
From: Finn Thain fthain@telegraphics.com.au
[ Upstream commit 79172ab20bfd8437b277254028efdb68484e2c21 ]
Since the scsi subsystem adopted the blk-mq API, a host with zero sg_tablesize crashes with a NULL pointer dereference.
blk_queue_max_segments: set to minimum 1 scsi 0:0:0:0: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5 scsi target0:0:0: Beginning Domain Validation scsi target0:0:0: Domain Validation skipping write tests scsi target0:0:0: Ending Domain Validation blk_queue_max_segments: set to minimum 1 scsi 0:0:1:0: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5 scsi target0:0:1: Beginning Domain Validation scsi target0:0:1: Domain Validation skipping write tests scsi target0:0:1: Ending Domain Validation blk_queue_max_segments: set to minimum 1 scsi 0:0:2:0: CD-ROM QEMU QEMU CD-ROM 2.5+ PQ: 0 ANSI: 5 scsi target0:0:2: Beginning Domain Validation scsi target0:0:2: Domain Validation skipping write tests scsi target0:0:2: Ending Domain Validation blk_queue_max_segments: set to minimum 1 blk_queue_max_segments: set to minimum 1 blk_queue_max_segments: set to minimum 1 blk_queue_max_segments: set to minimum 1 sr 0:0:2:0: Power-on or device reset occurred sd 0:0:0:0: Power-on or device reset occurred sd 0:0:1:0: Power-on or device reset occurred sd 0:0:0:0: [sda] 10485762 512-byte logical blocks: (5.37 GB/5.00 GiB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Unable to handle kernel NULL pointer dereference at virtual address (ptrval) Oops: 00000000 Modules linked in: PC: [<001cd874>] blk_mq_free_request+0x66/0xe2 SR: 2004 SP: (ptrval) a2: 00874520 d0: 00000000 d1: 00000000 d2: 009ba800 d3: 00000000 d4: 00000000 d5: 08000002 a0: 0087be68 a1: 009a81e0 Process kworker/u2:2 (pid: 15, task=(ptrval)) Frame format=7 eff addr=0000007a ssw=0505 faddr=0000007a wb 1 stat/addr/data: 0000 00000000 00000000 wb 2 stat/addr/data: 0000 00000000 00000000 wb 3 stat/addr/data: 0000 0000007a 00000000 push data: 00000000 00000000 00000000 00000000 Stack from 0087bd98: 00000002 00000000 0087be72 009a7820 0087bdb4 001c4f6c 009a7820 0087bdd4 0024d200 009a7820 0024d0dc 0087be72 009baa00 0087be68 009a5000 0087be7c 00265d10 009a5000 0087be72 00000003 00000000 00000000 00000000 0087be68 00000bb8 00000005 00000000 00000000 00000000 00000000 00265c56 00000000 009ba60c 0036ddf4 00000002 ffffffff 009baa00 009ba600 009a50d6 0087be74 00227ba0 009baa08 00000001 009baa08 009ba60c 0036ddf4 00000000 00000000 Call Trace: [<001c4f6c>] blk_put_request+0xe/0x14 [<0024d200>] __scsi_execute+0x124/0x174 [<0024d0dc>] __scsi_execute+0x0/0x174 [<00265d10>] sd_revalidate_disk+0xba/0x1f02 [<00265c56>] sd_revalidate_disk+0x0/0x1f02 [<0036ddf4>] strlen+0x0/0x22 [<00227ba0>] device_add+0x3da/0x604 [<0036ddf4>] strlen+0x0/0x22 [<00267e64>] sd_probe+0x30c/0x4b4 [<0002da44>] process_one_work+0x0/0x402 [<0022b978>] really_probe+0x226/0x354 [<0022bc34>] driver_probe_device+0xa4/0xf0 [<0002da44>] process_one_work+0x0/0x402 [<0022bcd0>] __driver_attach_async_helper+0x50/0x70 [<00035dae>] async_run_entry_fn+0x36/0x130 [<0002db88>] process_one_work+0x144/0x402 [<0002e1aa>] worker_thread+0x0/0x570 [<0002e29a>] worker_thread+0xf0/0x570 [<0002e1aa>] worker_thread+0x0/0x570 [<003768d8>] schedule+0x0/0xb8 [<0003f58c>] __init_waitqueue_head+0x0/0x12 [<00033e92>] kthread+0xc2/0xf6 [<000331e8>] kthread_parkme+0x0/0x4e [<003768d8>] schedule+0x0/0xb8 [<00033dd0>] kthread+0x0/0xf6 [<00002c10>] ret_from_kernel_thread+0xc/0x14 Code: 0280 0006 0800 56c0 4400 0280 0000 00ff <52b4> 0c3a 082b 0006 0013 6706 2042 53a8 00c4 4ab9 0047 3374 6640 202d 000c 670c Disabling lock debugging due to kernel taint
Avoid this by setting sg_tablesize = 1.
Link: https://lore.kernel.org/r/4567bcae94523b47d6f3b77450ba305823bca479.157265681... Reported-and-tested-by: Michael Schmitz schmitzmic@gmail.com Reviewed-by: Michael Schmitz schmitzmic@gmail.com Signed-off-by: Finn Thain fthain@telegraphics.com.au Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/atari_scsi.c | 6 +++--- drivers/scsi/mac_scsi.c | 2 +- drivers/scsi/sun3_scsi.c | 4 ++-- 3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c index 89f5154c40b6..764c46d7333e 100644 --- a/drivers/scsi/atari_scsi.c +++ b/drivers/scsi/atari_scsi.c @@ -742,7 +742,7 @@ static int __init atari_scsi_probe(struct platform_device *pdev) atari_scsi_template.sg_tablesize = SG_ALL; } else { atari_scsi_template.can_queue = 1; - atari_scsi_template.sg_tablesize = SG_NONE; + atari_scsi_template.sg_tablesize = 1; }
if (setup_can_queue > 0) @@ -751,8 +751,8 @@ static int __init atari_scsi_probe(struct platform_device *pdev) if (setup_cmd_per_lun > 0) atari_scsi_template.cmd_per_lun = setup_cmd_per_lun;
- /* Leave sg_tablesize at 0 on a Falcon! */ - if (ATARIHW_PRESENT(TT_SCSI) && setup_sg_tablesize >= 0) + /* Don't increase sg_tablesize on Falcon! */ + if (ATARIHW_PRESENT(TT_SCSI) && setup_sg_tablesize > 0) atari_scsi_template.sg_tablesize = setup_sg_tablesize;
if (setup_hostid >= 0) { diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c index 643321fc152d..b5050c2ede00 100644 --- a/drivers/scsi/mac_scsi.c +++ b/drivers/scsi/mac_scsi.c @@ -429,7 +429,7 @@ static int __init mac_scsi_probe(struct platform_device *pdev) mac_scsi_template.can_queue = setup_can_queue; if (setup_cmd_per_lun > 0) mac_scsi_template.cmd_per_lun = setup_cmd_per_lun; - if (setup_sg_tablesize >= 0) + if (setup_sg_tablesize > 0) mac_scsi_template.sg_tablesize = setup_sg_tablesize; if (setup_hostid >= 0) mac_scsi_template.this_id = setup_hostid & 7; diff --git a/drivers/scsi/sun3_scsi.c b/drivers/scsi/sun3_scsi.c index 9492638296c8..af8a7ef9c858 100644 --- a/drivers/scsi/sun3_scsi.c +++ b/drivers/scsi/sun3_scsi.c @@ -498,7 +498,7 @@ static struct scsi_host_template sun3_scsi_template = { .eh_host_reset_handler = sun3scsi_host_reset, .can_queue = 16, .this_id = 7, - .sg_tablesize = SG_NONE, + .sg_tablesize = 1, .cmd_per_lun = 2, .use_clustering = DISABLE_CLUSTERING, .cmd_size = NCR5380_CMD_SIZE, @@ -520,7 +520,7 @@ static int __init sun3_scsi_probe(struct platform_device *pdev) sun3_scsi_template.can_queue = setup_can_queue; if (setup_cmd_per_lun > 0) sun3_scsi_template.cmd_per_lun = setup_cmd_per_lun; - if (setup_sg_tablesize >= 0) + if (setup_sg_tablesize > 0) sun3_scsi_template.sg_tablesize = setup_sg_tablesize; if (setup_hostid >= 0) sun3_scsi_template.this_id = setup_hostid & 7;
From: Robert Jarzmik robert.jarzmik@free.fr
[ Upstream commit 46acbcb4849b2ca2e6e975e7c8130c1d61c8fd0c ]
The pxa27x platforms have a single IP with 2 drivers, sa1100-rtc and rtc-pxa drivers.
A previous patch fixed the sa1100-rtc case, but the pxa-rtc wasn't fixed. This patch completes the previous one.
Fixes: 8b6d10345e16 ("clk: pxa: add missing pxa27x clocks for Irda and sa1100-rtc") Signed-off-by: Robert Jarzmik robert.jarzmik@free.fr Link: https://lkml.kernel.org/r/20191026194420.11918-1-robert.jarzmik@free.fr Signed-off-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/pxa/clk-pxa27x.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/clk/pxa/clk-pxa27x.c b/drivers/clk/pxa/clk-pxa27x.c index d40b63e7bbce..b44c4cf8011a 100644 --- a/drivers/clk/pxa/clk-pxa27x.c +++ b/drivers/clk/pxa/clk-pxa27x.c @@ -463,6 +463,7 @@ struct dummy_clk { }; static struct dummy_clk dummy_clks[] __initdata = { DUMMY_CLK(NULL, "pxa27x-gpio", "osc_32_768khz"), + DUMMY_CLK(NULL, "pxa-rtc", "osc_32_768khz"), DUMMY_CLK(NULL, "sa1100-rtc", "osc_32_768khz"), DUMMY_CLK("UARTCLK", "pxa2xx-ir", "STUART"), };
From: Coly Li colyli@suse.de
[ Upstream commit 9fcc34b1a6dd4b8e5337e2b6ef45e428897eca6b ]
In bch_mca_scan(), the number of shrinking btree node is calculated by code like this, unsigned long nr = sc->nr_to_scan;
nr /= c->btree_pages; nr = min_t(unsigned long, nr, mca_can_free(c)); variable sc->nr_to_scan is number of objects (here is bcache B+tree nodes' number) to shrink, and pointer variable sc is sent from memory management code as parametr of a callback.
If sc->nr_to_scan is smaller than c->btree_pages, after the above calculation, variable 'nr' will be 0 and nothing will be shrunk. It is frequeently observed that only 1 or 2 is set to sc->nr_to_scan and make nr to be zero. Then bch_mca_scan() will do nothing more then acquiring and releasing mutex c->bucket_lock.
This patch checkes whether nr is 0 after the above calculation, if 0 is the result then set 1 to variable 'n'. Then at least bch_mca_scan() will try to shrink a single B+tree node.
Signed-off-by: Coly Li colyli@suse.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/bcache/btree.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c index 45f684689c35..bb40bd66a10e 100644 --- a/drivers/md/bcache/btree.c +++ b/drivers/md/bcache/btree.c @@ -713,6 +713,8 @@ static unsigned long bch_mca_scan(struct shrinker *shrink, * IO can always make forward progress: */ nr /= c->btree_pages; + if (nr == 0) + nr = 1; nr = min_t(unsigned long, nr, mca_can_free(c));
i = 0;
From: Jinke Fan fanjinke@hygon.cn
[ Upstream commit f1a0094cbbe97a5f8aca7bdc64bfe43ac9dc6879 ]
The PixArt OEM mouse disconnets/reconnects every minute on Linux. All contents of dmesg are repetitive:
[ 1465.810014] usb 1-2.2: USB disconnect, device number 20 [ 1467.431509] usb 1-2.2: new low-speed USB device number 21 using xhci_hcd [ 1467.654982] usb 1-2.2: New USB device found, idVendor=03f0,idProduct=1f4a, bcdDevice= 1.00 [ 1467.654985] usb 1-2.2: New USB device strings: Mfr=1, Product=2,SerialNumber=0 [ 1467.654987] usb 1-2.2: Product: HP USB Optical Mouse [ 1467.654988] usb 1-2.2: Manufacturer: PixArt [ 1467.699722] input: PixArt HP USB Optical Mouse as /devices/pci0000:00/0000:00:07.1/0000:05:00.3/usb1/1-2/1-2.2/1-2.2:1.0/0003:03F0:1F4A.0012/input/input19 [ 1467.700124] hid-generic 0003:03F0:1F4A.0012: input,hidraw0: USB HID v1.11 Mouse [PixArt HP USB Optical Mouse] on usb-0000:05:00.3-2.2/input0
So add HID_QUIRK_ALWAYS_POLL for this one as well. Test the patch, the mouse is no longer disconnected and there are no duplicate logs in dmesg.
Reference: https://github.com/sriemer/fix-linux-mouse
Signed-off-by: Jinke Fan fanjinke@hygon.cn Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/hid-ids.h | 1 + drivers/hid/hid-quirks.c | 1 + 2 files changed, 2 insertions(+)
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 02c263a4c083..1949d6fca53e 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -563,6 +563,7 @@ #define USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE_094A 0x094a #define USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE_0941 0x0941 #define USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE_0641 0x0641 +#define USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE_1f4a 0x1f4a
#define USB_VENDOR_ID_HUION 0x256c #define USB_DEVICE_ID_HUION_TABLET 0x006e diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c index a407fd2399ff..57d6fe9ed416 100644 --- a/drivers/hid/hid-quirks.c +++ b/drivers/hid/hid-quirks.c @@ -96,6 +96,7 @@ static const struct hid_device_id hid_quirks[] = { { HID_USB_DEVICE(USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE_094A), HID_QUIRK_ALWAYS_POLL }, { HID_USB_DEVICE(USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE_0941), HID_QUIRK_ALWAYS_POLL }, { HID_USB_DEVICE(USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE_0641), HID_QUIRK_ALWAYS_POLL }, + { HID_USB_DEVICE(USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE_1f4a), HID_QUIRK_ALWAYS_POLL }, { HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM, USB_DEVICE_ID_IDEACOM_IDC6680), HID_QUIRK_MULTI_INPUT }, { HID_USB_DEVICE(USB_VENDOR_ID_INNOMEDIA, USB_DEVICE_ID_INNEX_GENESIS_ATARI), HID_QUIRK_MULTI_INPUT }, { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X), HID_QUIRK_MULTI_INPUT },
From: Hans de Goede hdegoede@redhat.com
[ Upstream commit 61005d65b6c7dcf61c19516e6ebe5acc02d2cdda ]
My Logitech M185 (PID:4038) 2.4 GHz wireless HID++ mouse is causing intermittent errors like these in the log:
[11091.034857] logitech-hidpp-device 0003:046D:4038.0006: hidpp20_batterylevel_get_battery_capacity: received protocol error 0x09 [12388.031260] logitech-hidpp-device 0003:046D:4038.0006: hidpp20_batterylevel_get_battery_capacity: received protocol error 0x09 [16613.718543] logitech-hidpp-device 0003:046D:4038.0006: hidpp20_batterylevel_get_battery_capacity: received protocol error 0x09 [23529.938728] logitech-hidpp-device 0003:046D:4038.0006: hidpp20_batterylevel_get_battery_capacity: received protocol error 0x09
We are already silencing error-code 0x09 (HIDPP_ERROR_RESOURCE_ERROR) errors in other places, lets do the same in hidpp20_batterylevel_get_battery_capacity to remove these harmless, but scary looking errors from the dmesg output.
Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/hid-logitech-hidpp.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 034c883e57fa..504e8917b06f 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -978,6 +978,9 @@ static int hidpp20_batterylevel_get_battery_capacity(struct hidpp_device *hidpp, ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_LEVEL_STATUS, NULL, 0, &response); + /* Ignore these intermittent errors */ + if (ret == HIDPP_ERROR_RESOURCE_ERROR) + return -EIO; if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret);
From: Doug Berger opendmb@gmail.com
[ Upstream commit 4ae5061a19b550dfe25397843427ed2ebab16b16 ]
When the default processor handling was added to the function cpu_v7_spectre_init() it only excluded other ARM implemented processor cores. The Broadcom Brahma B53 core is not implemented by ARM so it ended up falling through into the set of processors that attempt to use the ARM_SMCCC_ARCH_WORKAROUND_1 service to harden the branch predictor.
Since this workaround is not necessary for the Brahma-B53 this commit explicitly checks for it and prevents it from applying a branch predictor hardening workaround.
Fixes: 10115105cb3a ("ARM: spectre-v2: add firmware based hardening") Signed-off-by: Doug Berger opendmb@gmail.com Signed-off-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: Russell King rmk+kernel@armlinux.org.uk Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/mm/proc-v7-bugs.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c index 9a07916af8dd..a6554fdb56c5 100644 --- a/arch/arm/mm/proc-v7-bugs.c +++ b/arch/arm/mm/proc-v7-bugs.c @@ -65,6 +65,9 @@ static void cpu_v7_spectre_init(void) break;
#ifdef CONFIG_ARM_PSCI + case ARM_CPU_PART_BRAHMA_B53: + /* Requires no workaround */ + break; default: /* Other ARM CPUs require no workaround */ if (read_cpuid_implementor() == ARM_CPU_IMP_ARM)
From: Qian Cai cai@lca.pw
[ Upstream commit 4e24e37d5313edca8b4ab86f240c046c731e28d6 ]
drivers/nvdimm/btt.c: In function 'btt_read_pg': drivers/nvdimm/btt.c:1264:8: warning: variable 'rc' set but not used [-Wunused-but-set-variable] int rc; ^~
Add a ratelimited message in case a storm of errors is encountered.
Fixes: d9b83c756953 ("libnvdimm, btt: rework error clearing") Signed-off-by: Qian Cai cai@lca.pw Reviewed-by: Vishal Verma vishal.l.verma@intel.com Link: https://lore.kernel.org/r/1572530719-32161-1-git-send-email-cai@lca.pw Signed-off-by: Dan Williams dan.j.williams@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvdimm/btt.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 0360c015f658..75ae2c508a04 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1260,11 +1260,11 @@ static int btt_read_pg(struct btt *btt, struct bio_integrity_payload *bip,
ret = btt_data_read(arena, page, off, postmap, cur_len); if (ret) { - int rc; - /* Media error - set the e_flag */ - rc = btt_map_write(arena, premap, postmap, 0, 1, - NVDIMM_IO_ATOMIC); + if (btt_map_write(arena, premap, postmap, 0, 1, NVDIMM_IO_ATOMIC)) + dev_warn_ratelimited(to_dev(arena), + "Error persistently tracking bad blocks at %#x\n", + premap); goto out_rtt; }
From: Blaž Hrastnik blaz@mxxn.io
[ Upstream commit 2dbc6f113acd74c66b04bf49fb027efd830b1c5a ]
Per Microsoft spec, usage 0xC5 (page 0xFF) returns a blob containing data used to verify the touchpad as a Windows Precision Touchpad.
0x85, REPORTID_PTPHQA, // REPORT_ID (PTPHQA) 0x09, 0xC5, // USAGE (Vendor Usage 0xC5) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (0xff) 0x75, 0x08, // REPORT_SIZE (8) 0x96, 0x00, 0x01, // REPORT_COUNT (0x100 (256)) 0xb1, 0x02, // FEATURE (Data,Var,Abs)
However, some devices, namely Microsoft's Surface line of products instead implement a "segmented device certification report" (usage 0xC6) which returns the same report, but in smaller chunks.
0x06, 0x00, 0xff, // USAGE_PAGE (Vendor Defined) 0x85, REPORTID_PTPHQA, // REPORT_ID (PTPHQA) 0x09, 0xC6, // USAGE (Vendor usage for segment #) 0x25, 0x08, // LOGICAL_MAXIMUM (8) 0x75, 0x08, // REPORT_SIZE (8) 0x95, 0x01, // REPORT_COUNT (1) 0xb1, 0x02, // FEATURE (Data,Var,Abs) 0x09, 0xC7, // USAGE (Vendor Usage) 0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (0xff) 0x95, 0x20, // REPORT_COUNT (32) 0xb1, 0x02, // FEATURE (Data,Var,Abs)
By expanding Win8 touchpad detection to also look for the segmented report, all Surface touchpads are now properly recognized by hid-multitouch.
Signed-off-by: Blaž Hrastnik blaz@mxxn.io Signed-off-by: Benjamin Tissoires benjamin.tissoires@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/hid-core.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index b0c8fae7f903..3a359716fb38 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -780,6 +780,10 @@ static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage) if (usage == 0xff0000c5 && parser->global.report_count == 256 && parser->global.report_size == 8) parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8; + + if (usage == 0xff0000c6 && parser->global.report_count == 1 && + parser->global.report_size == 8) + parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8; }
static void hid_scan_collection(struct hid_parser *parser, unsigned type)
From: Andrew Duggan aduggan@synaptics.com
[ Upstream commit 8725aa4fa7ded30211ebd28bb1c9bae806eb3841 ]
In the event that the RMI device is unreachable, the calls to rmi_set_mode() or rmi_set_page() will fail before registering the RMI transport device. When the device is removed, rmi_remove() will call rmi_unregister_transport_device() which will attempt to access the rmi_dev pointer which was not set. This patch adds a check of the RMI_STARTED bit before calling rmi_unregister_transport_device(). The RMI_STARTED bit is only set after rmi_register_transport_device() completes successfully.
The kernel oops was reported in this message: https://www.spinics.net/lists/linux-input/msg58433.html
[jkosina@suse.cz: reworded changelog as agreed with Andrew] Signed-off-by: Andrew Duggan aduggan@synaptics.com Reported-by: Federico Cerutti federico@ceres-c.it Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/hid-rmi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c index 9e33165250a3..a5b6b2be9cda 100644 --- a/drivers/hid/hid-rmi.c +++ b/drivers/hid/hid-rmi.c @@ -737,7 +737,8 @@ static void rmi_remove(struct hid_device *hdev) { struct rmi_data *hdata = hid_get_drvdata(hdev);
- if (hdata->device_flags & RMI_DEVICE) { + if ((hdata->device_flags & RMI_DEVICE) + && test_bit(RMI_STARTED, &hdata->flags)) { clear_bit(RMI_STARTED, &hdata->flags); cancel_work_sync(&hdata->reset_work); rmi_unregister_transport_device(&hdata->xport);
From: Kevin Hao haokexin@gmail.com
[ Upstream commit 72139dfa2464e43957d330266994740bb7be2535 ]
The struct cdev is embedded in the struct watchdog_core_data. In the current code, we manage the watchdog_core_data with a kref, but the cdev is manged by a kobject. There is no any relationship between this kref and kobject. So it is possible that the watchdog_core_data is freed before the cdev is entirely released. We can easily get the following call trace with CONFIG_DEBUG_KOBJECT_RELEASE and CONFIG_DEBUG_OBJECTS_TIMERS enabled. ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x38 WARNING: CPU: 23 PID: 1028 at lib/debugobjects.c:481 debug_print_object+0xb0/0xf0 Modules linked in: softdog(-) deflate ctr twofish_generic twofish_common camellia_generic serpent_generic blowfish_generic blowfish_common cast5_generic cast_common cmac xcbc af_key sch_fq_codel openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 CPU: 23 PID: 1028 Comm: modprobe Not tainted 5.3.0-next-20190924-yoctodev-standard+ #180 Hardware name: Marvell OcteonTX CN96XX board (DT) pstate: 00400009 (nzcv daif +PAN -UAO) pc : debug_print_object+0xb0/0xf0 lr : debug_print_object+0xb0/0xf0 sp : ffff80001cbcfc70 x29: ffff80001cbcfc70 x28: ffff800010ea2128 x27: ffff800010bad000 x26: 0000000000000000 x25: ffff80001103c640 x24: ffff80001107b268 x23: ffff800010bad9e8 x22: ffff800010ea2128 x21: ffff000bc2c62af8 x20: ffff80001103c600 x19: ffff800010e867d8 x18: 0000000000000060 x17: 0000000000000000 x16: 0000000000000000 x15: ffff000bd7240470 x14: 6e6968207473696c x13: 5f72656d6974203a x12: 6570797420746365 x11: 6a626f2029302065 x10: 7461747320657669 x9 : 7463612820657669 x8 : 3378302f3078302b x7 : 0000000000001d7a x6 : ffff800010fd5889 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : ffff000bff948548 x1 : 276a1c9e1edc2300 x0 : 0000000000000000 Call trace: debug_print_object+0xb0/0xf0 debug_check_no_obj_freed+0x1e8/0x210 kfree+0x1b8/0x368 watchdog_cdev_unregister+0x88/0xc8 watchdog_dev_unregister+0x38/0x48 watchdog_unregister_device+0xa8/0x100 softdog_exit+0x18/0xfec4 [softdog] __arm64_sys_delete_module+0x174/0x200 el0_svc_handler+0xd0/0x1c8 el0_svc+0x8/0xc
This is a common issue when using cdev embedded in a struct. Fortunately, we already have a mechanism to solve this kind of issue. Please see commit 233ed09d7fda ("chardev: add helper function to register char devs with a struct device") for more detail.
In this patch, we choose to embed the struct device into the watchdog_core_data, and use the API provided by the commit 233ed09d7fda to make sure that the release of watchdog_core_data and cdev are in sequence.
Signed-off-by: Kevin Hao haokexin@gmail.com Reviewed-by: Guenter Roeck linux@roeck-us.net Link: https://lore.kernel.org/r/20191008112934.29669-1-haokexin@gmail.com Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Wim Van Sebroeck wim@linux-watchdog.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/watchdog/watchdog_dev.c | 70 +++++++++++++++------------------ 1 file changed, 32 insertions(+), 38 deletions(-)
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index f6c24b22b37c..4b89333e8eb4 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -38,7 +38,6 @@ #include <linux/init.h> /* For __init/__exit/... */ #include <linux/hrtimer.h> /* For hrtimers */ #include <linux/kernel.h> /* For printk/panic/... */ -#include <linux/kref.h> /* For data references */ #include <linux/kthread.h> /* For kthread_work */ #include <linux/miscdevice.h> /* For handling misc devices */ #include <linux/module.h> /* For module stuff/... */ @@ -56,14 +55,14 @@
/* * struct watchdog_core_data - watchdog core internal data - * @kref: Reference count. + * @dev: The watchdog's internal device * @cdev: The watchdog's Character device. * @wdd: Pointer to watchdog device. * @lock: Lock for watchdog core. * @status: Watchdog core internal status bits. */ struct watchdog_core_data { - struct kref kref; + struct device dev; struct cdev cdev; struct watchdog_device *wdd; struct mutex lock; @@ -822,7 +821,7 @@ static int watchdog_open(struct inode *inode, struct file *file) file->private_data = wd_data;
if (!hw_running) - kref_get(&wd_data->kref); + get_device(&wd_data->dev);
/* dev/watchdog is a virtual (and thus non-seekable) filesystem */ return nonseekable_open(inode, file); @@ -834,11 +833,11 @@ out_clear: return err; }
-static void watchdog_core_data_release(struct kref *kref) +static void watchdog_core_data_release(struct device *dev) { struct watchdog_core_data *wd_data;
- wd_data = container_of(kref, struct watchdog_core_data, kref); + wd_data = container_of(dev, struct watchdog_core_data, dev);
kfree(wd_data); } @@ -898,7 +897,7 @@ done: */ if (!running) { module_put(wd_data->cdev.owner); - kref_put(&wd_data->kref, watchdog_core_data_release); + put_device(&wd_data->dev); } return 0; } @@ -917,17 +916,22 @@ static struct miscdevice watchdog_miscdev = { .fops = &watchdog_fops, };
+static struct class watchdog_class = { + .name = "watchdog", + .owner = THIS_MODULE, + .dev_groups = wdt_groups, +}; + /* * watchdog_cdev_register: register watchdog character device * @wdd: watchdog device - * @devno: character device number * * Register a watchdog character device including handling the legacy * /dev/watchdog node. /dev/watchdog is actually a miscdevice and * thus we set it up like that. */
-static int watchdog_cdev_register(struct watchdog_device *wdd, dev_t devno) +static int watchdog_cdev_register(struct watchdog_device *wdd) { struct watchdog_core_data *wd_data; int err; @@ -935,7 +939,6 @@ static int watchdog_cdev_register(struct watchdog_device *wdd, dev_t devno) wd_data = kzalloc(sizeof(struct watchdog_core_data), GFP_KERNEL); if (!wd_data) return -ENOMEM; - kref_init(&wd_data->kref); mutex_init(&wd_data->lock);
wd_data->wdd = wdd; @@ -964,23 +967,33 @@ static int watchdog_cdev_register(struct watchdog_device *wdd, dev_t devno) } }
+ device_initialize(&wd_data->dev); + wd_data->dev.devt = MKDEV(MAJOR(watchdog_devt), wdd->id); + wd_data->dev.class = &watchdog_class; + wd_data->dev.parent = wdd->parent; + wd_data->dev.groups = wdd->groups; + wd_data->dev.release = watchdog_core_data_release; + dev_set_drvdata(&wd_data->dev, wdd); + dev_set_name(&wd_data->dev, "watchdog%d", wdd->id); + /* Fill in the data structures */ cdev_init(&wd_data->cdev, &watchdog_fops); - wd_data->cdev.owner = wdd->ops->owner;
/* Add the device */ - err = cdev_add(&wd_data->cdev, devno, 1); + err = cdev_device_add(&wd_data->cdev, &wd_data->dev); if (err) { pr_err("watchdog%d unable to add device %d:%d\n", wdd->id, MAJOR(watchdog_devt), wdd->id); if (wdd->id == 0) { misc_deregister(&watchdog_miscdev); old_wd_data = NULL; - kref_put(&wd_data->kref, watchdog_core_data_release); + put_device(&wd_data->dev); } return err; }
+ wd_data->cdev.owner = wdd->ops->owner; + /* Record time of most recent heartbeat as 'just before now'. */ wd_data->last_hw_keepalive = ktime_sub(ktime_get(), 1);
@@ -990,7 +1003,7 @@ static int watchdog_cdev_register(struct watchdog_device *wdd, dev_t devno) */ if (watchdog_hw_running(wdd)) { __module_get(wdd->ops->owner); - kref_get(&wd_data->kref); + get_device(&wd_data->dev); if (handle_boot_enabled) hrtimer_start(&wd_data->timer, 0, HRTIMER_MODE_REL); else @@ -1013,7 +1026,7 @@ static void watchdog_cdev_unregister(struct watchdog_device *wdd) { struct watchdog_core_data *wd_data = wdd->wd_data;
- cdev_del(&wd_data->cdev); + cdev_device_del(&wd_data->cdev, &wd_data->dev); if (wdd->id == 0) { misc_deregister(&watchdog_miscdev); old_wd_data = NULL; @@ -1032,15 +1045,9 @@ static void watchdog_cdev_unregister(struct watchdog_device *wdd) hrtimer_cancel(&wd_data->timer); kthread_cancel_work_sync(&wd_data->work);
- kref_put(&wd_data->kref, watchdog_core_data_release); + put_device(&wd_data->dev); }
-static struct class watchdog_class = { - .name = "watchdog", - .owner = THIS_MODULE, - .dev_groups = wdt_groups, -}; - static int watchdog_reboot_notifier(struct notifier_block *nb, unsigned long code, void *data) { @@ -1071,27 +1078,14 @@ static int watchdog_reboot_notifier(struct notifier_block *nb,
int watchdog_dev_register(struct watchdog_device *wdd) { - struct device *dev; - dev_t devno; int ret;
- devno = MKDEV(MAJOR(watchdog_devt), wdd->id); - - ret = watchdog_cdev_register(wdd, devno); + ret = watchdog_cdev_register(wdd); if (ret) return ret;
- dev = device_create_with_groups(&watchdog_class, wdd->parent, - devno, wdd, wdd->groups, - "watchdog%d", wdd->id); - if (IS_ERR(dev)) { - watchdog_cdev_unregister(wdd); - return PTR_ERR(dev); - } - ret = watchdog_register_pretimeout(wdd); if (ret) { - device_destroy(&watchdog_class, devno); watchdog_cdev_unregister(wdd); return ret; } @@ -1099,7 +1093,8 @@ int watchdog_dev_register(struct watchdog_device *wdd) if (test_bit(WDOG_STOP_ON_REBOOT, &wdd->status)) { wdd->reboot_nb.notifier_call = watchdog_reboot_notifier;
- ret = devm_register_reboot_notifier(dev, &wdd->reboot_nb); + ret = devm_register_reboot_notifier(&wdd->wd_data->dev, + &wdd->reboot_nb); if (ret) { pr_err("watchdog%d: Cannot register reboot notifier (%d)\n", wdd->id, ret); @@ -1121,7 +1116,6 @@ int watchdog_dev_register(struct watchdog_device *wdd) void watchdog_dev_unregister(struct watchdog_device *wdd) { watchdog_unregister_pretimeout(wdd); - device_destroy(&watchdog_class, wdd->wd_data->cdev.dev); watchdog_cdev_unregister(wdd); }
From: peter chang dpf@google.com
[ Upstream commit ce21c63ee995b7a8b7b81245f2cee521f8c3c220 ]
Driver was missing complete() call in mpi_sata_completion which result in SATA abort error handling timing out. That causes the device to be left in the in_recovery state so subsequent commands sent to the device fail and the OS removes access to it.
Link: https://lore.kernel.org/r/20191114100910.6153-2-deepak.ukey@microchip.com Acked-by: Jack Wang jinpu.wang@cloud.ionos.com Signed-off-by: peter chang dpf@google.com Signed-off-by: Deepak Ukey deepak.ukey@microchip.com Signed-off-by: Viswas G Viswas.G@microchip.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/pm8001/pm80xx_hwi.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index 5021aed87f33..8627feb80261 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -2382,6 +2382,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) pm8001_printk("task 0x%p done with io_status 0x%x" " resp 0x%x stat 0x%x but aborted by upper layer!\n", t, status, ts->resp, ts->stat)); + if (t->slow_task) + complete(&t->slow_task->completion); pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); } else { spin_unlock_irqrestore(&t->task_state_lock, flags);
From: Subhash Jadavani subhashj@codeaurora.org
[ Upstream commit 6d303e4b19d694cdbebf76bcdb51ada664ee953d ]
During clock gating (ufshcd_gate_work()), we first put the link hibern8 by calling ufshcd_uic_hibern8_enter() and if ufshcd_uic_hibern8_enter() returns success (0) then we gate all the clocks. Now let’s zoom in to what ufshcd_uic_hibern8_enter() does internally: It calls __ufshcd_uic_hibern8_enter() and if failure is encountered, link recovery shall put the link back to the highest HS gear and returns success (0) to ufshcd_uic_hibern8_enter() which is the issue as link is still in active state due to recovery! Now ufshcd_uic_hibern8_enter() returns success to ufshcd_gate_work() and hence it goes ahead with gating the UFS clock while link is still in active state hence I believe controller would raise UIC error interrupts. But when we service the interrupt, clocks might have already been disabled!
This change fixes for this by returning failure from __ufshcd_uic_hibern8_enter() if recovery succeeds as link is still not in hibern8, upon receiving the error ufshcd_hibern8_enter() would initiate retry to put the link state back into hibern8.
Link: https://lore.kernel.org/r/1573798172-20534-8-git-send-email-cang@codeaurora.... Reviewed-by: Avri Altman avri.altman@wdc.com Reviewed-by: Bean Huo beanhuo@micron.com Signed-off-by: Subhash Jadavani subhashj@codeaurora.org Signed-off-by: Can Guo cang@codeaurora.org Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/ufs/ufshcd.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 7510d8328d4d..3601e770da16 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3875,15 +3875,24 @@ static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba) ktime_to_us(ktime_sub(ktime_get(), start)), ret);
if (ret) { + int err; + dev_err(hba->dev, "%s: hibern8 enter failed. ret = %d\n", __func__, ret);
/* - * If link recovery fails then return error so that caller - * don't retry the hibern8 enter again. + * If link recovery fails then return error code returned from + * ufshcd_link_recovery(). + * If link recovery succeeds then return -EAGAIN to attempt + * hibern8 enter retry again. */ - if (ufshcd_link_recovery(hba)) - ret = -ENOLINK; + err = ufshcd_link_recovery(hba); + if (err) { + dev_err(hba->dev, "%s: link recovery failed", __func__); + ret = err; + } else { + ret = -EAGAIN; + } } else ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_ENTER, POST_CHANGE); @@ -3897,7 +3906,7 @@ static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
for (retries = UIC_HIBERN8_ENTER_RETRIES; retries > 0; retries--) { ret = __ufshcd_uic_hibern8_enter(hba); - if (!ret || ret == -ENOLINK) + if (!ret) goto out; } out:
From: Maurizio Lombardi mlombard@redhat.com
[ Upstream commit aa5334c4f3014940f11bf876e919c956abef4089 ]
Passing the parameter "num_tgts=-1" will start an infinite loop that exhausts the system memory
Link: https://lore.kernel.org/r/20191115163727.24626-1-mlombard@redhat.com Signed-off-by: Maurizio Lombardi mlombard@redhat.com Acked-by: Douglas Gilbert dgilbert@interlog.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/scsi_debug.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 65305b3848bc..a1dbae806fde 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -5351,6 +5351,11 @@ static int __init scsi_debug_init(void) return -EINVAL; }
+ if (sdebug_num_tgts < 0) { + pr_err("num_tgts must be >= 0\n"); + return -EINVAL; + } + if (sdebug_guard > 1) { pr_err("guard must be 0 or 1\n"); return -EINVAL;
Hi!
From: Maurizio Lombardi mlombard@redhat.com
[ Upstream commit aa5334c4f3014940f11bf876e919c956abef4089 ]
Passing the parameter "num_tgts=-1" will start an infinite loop that exhausts the system memory
Should we provide some kind of upper bound for num_tgts, too? Otherwise integer overflow will follow later in the code. Even without overflow, it will kill the system due to OOM...
Best regards, Pavel
From: Finn Thain fthain@telegraphics.com.au
[ Upstream commit 0b7a223552d455bcfba6fb9cfc5eef2b5fce1491 ]
Add a module parameter to inhibit disconnect/reselect for individual targets. This gains compatibility with Aztec PowerMonster SCSI/SATA adapters with buggy firmware. (No fix is available from the vendor.)
Apparently these adapters pass-through the product/vendor of the attached SATA device. Since they can't be identified from the response to an INQUIRY command, a device blacklist flag won't work.
Cc: Michael Schmitz schmitzmic@gmail.com Link: https://lore.kernel.org/r/993b17545990f31f9fa5a98202b51102a68e7594.157387541... Reviewed-and-tested-by: Michael Schmitz schmitzmic@gmail.com Signed-off-by: Finn Thain fthain@telegraphics.com.au Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/NCR5380.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index 8ec68dcc0cc4..95a3e3bf2b43 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -129,6 +129,9 @@ #define NCR5380_release_dma_irq(x) #endif
+static unsigned int disconnect_mask = ~0; +module_param(disconnect_mask, int, 0444); + static int do_abort(struct Scsi_Host *); static void do_reset(struct Scsi_Host *); static void bus_reset_cleanup(struct Scsi_Host *); @@ -946,7 +949,8 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd) int err; bool ret = true; bool can_disconnect = instance->irq != NO_IRQ && - cmd->cmnd[0] != REQUEST_SENSE; + cmd->cmnd[0] != REQUEST_SENSE && + (disconnect_mask & BIT(scmd_id(cmd)));
NCR5380_dprint(NDEBUG_ARBITRATION, instance); dsprintk(NDEBUG_ARBITRATION, instance, "starting arbitration, id = %d\n",
From: Anatol Pomazau anatol@google.com
[ Upstream commit 238191d65d7217982d69e21c1d623616da34b281 ]
If a faulty initiator fails to bind the socket to the iSCSI connection before emitting a command, for instance, a subsequent send_pdu, it will crash the kernel due to a null pointer dereference in sock_sendmsg(), as shown in the log below. This patch makes sure the bind succeeded before trying to use the socket.
BUG: kernel NULL pointer dereference, address: 0000000000000018 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] SMP PTI CPU: 3 PID: 7 Comm: kworker/u8:0 Not tainted 5.4.0-rc2.iscsi+ #13 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.158246] Workqueue: iscsi_q_0 iscsi_xmitworker [ 24.158883] RIP: 0010:apparmor_socket_sendmsg+0x5/0x20 [...] [ 24.161739] RSP: 0018:ffffab6440043ca0 EFLAGS: 00010282 [ 24.162400] RAX: ffffffff891c1c00 RBX: ffffffff89d53968 RCX: 0000000000000001 [ 24.163253] RDX: 0000000000000030 RSI: ffffab6440043d00 RDI: 0000000000000000 [ 24.164104] RBP: 0000000000000030 R08: 0000000000000030 R09: 0000000000000030 [ 24.165166] R10: ffffffff893e66a0 R11: 0000000000000018 R12: ffffab6440043d00 [ 24.166038] R13: 0000000000000000 R14: 0000000000000000 R15: ffff9d5575a62e90 [ 24.166919] FS: 0000000000000000(0000) GS:ffff9d557db80000(0000) knlGS:0000000000000000 [ 24.167890] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.168587] CR2: 0000000000000018 CR3: 000000007a838000 CR4: 00000000000006e0 [ 24.169451] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.170320] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.171214] Call Trace: [ 24.171537] security_socket_sendmsg+0x3a/0x50 [ 24.172079] sock_sendmsg+0x16/0x60 [ 24.172506] iscsi_sw_tcp_xmit_segment+0x77/0x120 [ 24.173076] iscsi_sw_tcp_pdu_xmit+0x58/0x170 [ 24.173604] ? iscsi_dbg_trace+0x63/0x80 [ 24.174087] iscsi_tcp_task_xmit+0x101/0x280 [ 24.174666] iscsi_xmit_task+0x83/0x110 [ 24.175206] iscsi_xmitworker+0x57/0x380 [ 24.175757] ? __schedule+0x2a2/0x700 [ 24.176273] process_one_work+0x1b5/0x360 [ 24.176837] worker_thread+0x50/0x3c0 [ 24.177353] kthread+0xf9/0x130 [ 24.177799] ? process_one_work+0x360/0x360 [ 24.178401] ? kthread_park+0x90/0x90 [ 24.178915] ret_from_fork+0x35/0x40 [ 24.179421] Modules linked in: [ 24.179856] CR2: 0000000000000018 [ 24.180327] ---[ end trace b4b7674b6df5f480 ]---
Signed-off-by: Anatol Pomazau anatol@google.com Co-developed-by: Frank Mayhar fmayhar@google.com Signed-off-by: Frank Mayhar fmayhar@google.com Co-developed-by: Bharath Ravi rbharath@google.com Signed-off-by: Bharath Ravi rbharath@google.com Co-developed-by: Khazhimsel Kumykov khazhy@google.com Signed-off-by: Khazhimsel Kumykov khazhy@google.com Co-developed-by: Gabriel Krisman Bertazi krisman@collabora.com Signed-off-by: Gabriel Krisman Bertazi krisman@collabora.com Reviewed-by: Lee Duncan lduncan@suse.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/iscsi_tcp.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 23354f206533..55181d28291e 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -374,8 +374,16 @@ static int iscsi_sw_tcp_pdu_xmit(struct iscsi_task *task) { struct iscsi_conn *conn = task->conn; unsigned int noreclaim_flag; + struct iscsi_tcp_conn *tcp_conn = conn->dd_data; + struct iscsi_sw_tcp_conn *tcp_sw_conn = tcp_conn->dd_data; int rc = 0;
+ if (!tcp_sw_conn->sock) { + iscsi_conn_printk(KERN_ERR, conn, + "Transport not bound to socket!\n"); + return -EINVAL; + } + noreclaim_flag = memalloc_noreclaim_save();
while (iscsi_sw_tcp_xmit_qlen(conn)) {
From: Bart Van Assche bvanassche@acm.org
[ Upstream commit e9d3009cb936bd0faf0719f68d98ad8afb1e613b ]
The iSCSI target driver is the only target driver that does not wait for ongoing commands to finish before freeing a session. Make the iSCSI target driver wait for ongoing commands to finish before freeing a session. This patch fixes the following KASAN complaint:
BUG: KASAN: use-after-free in __lock_acquire+0xb1a/0x2710 Read of size 8 at addr ffff8881154eca70 by task kworker/0:2/247
CPU: 0 PID: 247 Comm: kworker/0:2 Not tainted 5.4.0-rc1-dbg+ #6 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Workqueue: target_completion target_complete_ok_work [target_core_mod] Call Trace: dump_stack+0x8a/0xd6 print_address_description.constprop.0+0x40/0x60 __kasan_report.cold+0x1b/0x33 kasan_report+0x16/0x20 __asan_load8+0x58/0x90 __lock_acquire+0xb1a/0x2710 lock_acquire+0xd3/0x200 _raw_spin_lock_irqsave+0x43/0x60 target_release_cmd_kref+0x162/0x7f0 [target_core_mod] target_put_sess_cmd+0x2e/0x40 [target_core_mod] lio_check_stop_free+0x12/0x20 [iscsi_target_mod] transport_cmd_check_stop_to_fabric+0xd8/0xe0 [target_core_mod] target_complete_ok_work+0x1b0/0x790 [target_core_mod] process_one_work+0x549/0xa40 worker_thread+0x7a/0x5d0 kthread+0x1bc/0x210 ret_from_fork+0x24/0x30
Allocated by task 889: save_stack+0x23/0x90 __kasan_kmalloc.constprop.0+0xcf/0xe0 kasan_slab_alloc+0x12/0x20 kmem_cache_alloc+0xf6/0x360 transport_alloc_session+0x29/0x80 [target_core_mod] iscsi_target_login_thread+0xcd6/0x18f0 [iscsi_target_mod] kthread+0x1bc/0x210 ret_from_fork+0x24/0x30
Freed by task 1025: save_stack+0x23/0x90 __kasan_slab_free+0x13a/0x190 kasan_slab_free+0x12/0x20 kmem_cache_free+0x146/0x400 transport_free_session+0x179/0x2f0 [target_core_mod] transport_deregister_session+0x130/0x180 [target_core_mod] iscsit_close_session+0x12c/0x350 [iscsi_target_mod] iscsit_logout_post_handler+0x136/0x380 [iscsi_target_mod] iscsit_response_queue+0x8de/0xbe0 [iscsi_target_mod] iscsi_target_tx_thread+0x27f/0x370 [iscsi_target_mod] kthread+0x1bc/0x210 ret_from_fork+0x24/0x30
The buggy address belongs to the object at ffff8881154ec9c0 which belongs to the cache se_sess_cache of size 352 The buggy address is located 176 bytes inside of 352-byte region [ffff8881154ec9c0, ffff8881154ecb20) The buggy address belongs to the page: page:ffffea0004553b00 refcount:1 mapcount:0 mapping:ffff888101755400 index:0x0 compound_mapcount: 0 flags: 0x2fff000000010200(slab|head) raw: 2fff000000010200 dead000000000100 dead000000000122 ffff888101755400 raw: 0000000000000000 0000000080130013 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected
Memory state around the buggy address: ffff8881154ec900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881154ec980: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
ffff8881154eca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^ ffff8881154eca80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881154ecb00: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
Cc: Mike Christie mchristi@redhat.com Link: https://lore.kernel.org/r/20191113220508.198257-3-bvanassche@acm.org Reviewed-by: Roman Bolshakov r.bolshakov@yadro.com Signed-off-by: Bart Van Assche bvanassche@acm.org Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/target/iscsi/iscsi_target.c | 10 ++++++++-- include/scsi/iscsi_proto.h | 1 + 2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 03e9cb156df9..317d0f3f7a14 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -1157,7 +1157,9 @@ int iscsit_setup_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, hdr->cmdsn, be32_to_cpu(hdr->data_length), payload_length, conn->cid);
- target_get_sess_cmd(&cmd->se_cmd, true); + if (target_get_sess_cmd(&cmd->se_cmd, true) < 0) + return iscsit_add_reject_cmd(cmd, + ISCSI_REASON_WAITING_FOR_LOGOUT, buf);
cmd->sense_reason = transport_lookup_cmd_lun(&cmd->se_cmd, scsilun_to_int(&hdr->lun)); @@ -1998,7 +2000,9 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, conn->sess->se_sess, 0, DMA_NONE, TCM_SIMPLE_TAG, cmd->sense_buffer + 2);
- target_get_sess_cmd(&cmd->se_cmd, true); + if (target_get_sess_cmd(&cmd->se_cmd, true) < 0) + return iscsit_add_reject_cmd(cmd, + ISCSI_REASON_WAITING_FOR_LOGOUT, buf);
/* * TASK_REASSIGN for ERL=2 / connection stays inside of @@ -4204,6 +4208,8 @@ int iscsit_close_connection( * must wait until they have completed. */ iscsit_check_conn_usage_count(conn); + target_sess_cmd_list_set_waiting(sess->se_sess); + target_wait_for_sess_cmds(sess->se_sess);
ahash_request_free(conn->conn_tx_hash); if (conn->conn_rx_hash) { diff --git a/include/scsi/iscsi_proto.h b/include/scsi/iscsi_proto.h index df156f1d50b2..f0a01a54bd15 100644 --- a/include/scsi/iscsi_proto.h +++ b/include/scsi/iscsi_proto.h @@ -638,6 +638,7 @@ struct iscsi_reject { #define ISCSI_REASON_BOOKMARK_INVALID 9 #define ISCSI_REASON_BOOKMARK_NO_RESOURCES 10 #define ISCSI_REASON_NEGOTIATION_RESET 11 +#define ISCSI_REASON_WAITING_FOR_LOGOUT 12
/* Max. number of Key=Value pairs in a text message */ #define MAX_KEY_VALUE_PAIRS 8192
From: Vladimir Oltean vladimir.oltean@nxp.com
[ Upstream commit 4e50573f39229d5e9c985fa3b4923a8b29619ade ]
The per-SoC devtype structures can contain their own callbacks that overwrite mpc8xxx_gpio_devtype_default.
The clear intention is that mpc8xxx_irq_set_type is used in case the SoC does not specify a more specific callback. But what happens is that if the SoC doesn't specify one, its .irq_set_type is de-facto NULL, and this overwrites mpc8xxx_irq_set_type to a no-op. This means that the following SoCs are affected:
- fsl,mpc8572-gpio - fsl,ls1028a-gpio - fsl,ls1088a-gpio
On these boards, the irq_set_type does exactly nothing, and the GPIO controller keeps its GPICR register in the hardware-default state. On the LS1028A, that is ACTIVE_BOTH, which means 2 interrupts are raised even if the IRQ client requests LEVEL_HIGH. Another implication is that the IRQs are not checked (e.g. level-triggered interrupts are not rejected, although they are not supported).
Fixes: 82e39b0d8566 ("gpio: mpc8xxx: handle differences between incarnations at a single place") Signed-off-by: Vladimir Oltean vladimir.oltean@nxp.com Link: https://lore.kernel.org/r/20191115125551.31061-1-olteanv@gmail.com Tested-by: Michael Walle michael@walle.cc Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpio/gpio-mpc8xxx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c index c8673a5d9412..3f10f9599f2c 100644 --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -348,7 +348,8 @@ static int mpc8xxx_probe(struct platform_device *pdev) * It's assumed that only a single type of gpio controller is available * on the current machine, so overwriting global data is fine. */ - mpc8xxx_irq_chip.irq_set_type = devtype->irq_set_type; + if (devtype->irq_set_type) + mpc8xxx_irq_chip.irq_set_type = devtype->irq_set_type;
if (devtype->gpio_dir_out) gc->direction_output = devtype->gpio_dir_out;
From: Colin Ian King colin.king@canonical.com
[ Upstream commit 00e0590dbaec6f1bcaa36a85467d7e3497ced522 ]
The sanity check in macro update_for_len checks to see if len is less than zero, however, len is a size_t so it can never be less than zero, so this sanity check is a no-op. Fix this by making len a ssize_t so the comparison will work and add ulen that is a size_t copy of len so that the min() macro won't throw warnings about comparing different types.
Addresses-Coverity: ("Macro compares unsigned to 0") Fixes: f1bd904175e8 ("apparmor: add the base fns() for domain labels") Signed-off-by: Colin Ian King colin.king@canonical.com Signed-off-by: John Johansen john.johansen@canonical.com Signed-off-by: Sasha Levin sashal@kernel.org --- security/apparmor/label.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/security/apparmor/label.c b/security/apparmor/label.c index ba11bdf9043a..2469549842d2 100644 --- a/security/apparmor/label.c +++ b/security/apparmor/label.c @@ -1462,11 +1462,13 @@ static inline bool use_label_hname(struct aa_ns *ns, struct aa_label *label, /* helper macro for snprint routines */ #define update_for_len(total, len, size, str) \ do { \ + size_t ulen = len; \ + \ AA_BUG(len < 0); \ - total += len; \ - len = min(len, size); \ - size -= len; \ - str += len; \ + total += ulen; \ + ulen = min(ulen, size); \ + size -= ulen; \ + str += ulen; \ } while (0)
/** @@ -1601,7 +1603,7 @@ int aa_label_snxprint(char *str, size_t size, struct aa_ns *ns, struct aa_ns *prev_ns = NULL; struct label_it i; int count = 0, total = 0; - size_t len; + ssize_t len;
AA_BUG(!str && size != 0); AA_BUG(!label);
From: Masahiro Yamada yamada.masahiro@socionext.com
[ Upstream commit 21915eca088dc271c970e8351290e83d938114ac ]
build_initial_tok_table() overwrites unused sym_entry to shrink the table size. Before the entry is overwritten, table[i].sym must be freed since it is malloc'ed data.
This fixes the 'definitely lost' report from valgrind. I ran valgrind against x86_64_defconfig of v5.4-rc8 kernel, and here is the summary:
[Before the fix]
LEAK SUMMARY: definitely lost: 53,184 bytes in 2,874 blocks
[After the fix]
LEAK SUMMARY: definitely lost: 0 bytes in 0 blocks
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com Signed-off-by: Sasha Levin sashal@kernel.org --- scripts/kallsyms.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index 31ed7f3f0e15..4b2711c23f4e 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -491,6 +491,8 @@ static void build_initial_tok_table(void) table[pos] = table[i]; learn_symbol(table[pos].sym, table[pos].len); pos++; + } else { + free(table[i].sym); } } table_cnt = pos;
From: Nathan Chancellor natechancellor@gmail.com
[ Upstream commit 465bfd9c44dea6b55962b5788a23ac87a467c923 ]
When building pseries_defconfig, building vdso32 errors out:
error: unknown target ABI 'elfv1'
This happens because -m32 in clang changes the target to 32-bit, which does not allow the ABI to be changed.
Commit 4dc831aa8813 ("powerpc: Fix compiling a BE kernel with a powerpc64le toolchain") added these flags to fix building big endian kernels with a little endian GCC.
Clang doesn't need -mabi because the target triple controls the default value. -mlittle-endian and -mbig-endian manipulate the triple into either powerpc64-* or powerpc64le-*, which properly sets the default ABI.
Adding a debug print out in the PPC64TargetInfo constructor after line 383 above shows this:
$ echo | ./clang -E --target=powerpc64-linux -mbig-endian -o /dev/null - Default ABI: elfv1
$ echo | ./clang -E --target=powerpc64-linux -mlittle-endian -o /dev/null - Default ABI: elfv2
$ echo | ./clang -E --target=powerpc64le-linux -mbig-endian -o /dev/null - Default ABI: elfv1
$ echo | ./clang -E --target=powerpc64le-linux -mlittle-endian -o /dev/null - Default ABI: elfv2
Don't specify -mabi when building with clang to avoid the build error with -m32 and not change any code generation.
-mcall-aixdesc is not an implemented flag in clang so it can be safely excluded as well, see commit 238abecde8ad ("powerpc: Don't use gcc specific options on clang").
pseries_defconfig successfully builds after this patch and powernv_defconfig and ppc44x_defconfig don't regress.
Reviewed-by: Daniel Axtens dja@axtens.net Signed-off-by: Nathan Chancellor natechancellor@gmail.com [mpe: Trim clang links in change log] Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20191119045712.39633-2-natechancellor@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/Makefile | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index dfcb698ec8f3..e43321f46a3b 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -90,11 +90,13 @@ MULTIPLEWORD := -mmultiple endif
ifdef CONFIG_PPC64 +ifndef CONFIG_CC_IS_CLANG cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1) cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mcall-aixdesc) aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1) aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mabi=elfv2 endif +endif
ifneq ($(cc-name),clang) cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mno-strict-align @@ -134,6 +136,7 @@ endif endif
CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no) +ifndef CONFIG_CC_IS_CLANG ifdef CONFIG_CPU_LITTLE_ENDIAN CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc)) AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2) @@ -142,6 +145,7 @@ CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1) CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc) AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1) endif +endif CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc)) CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions)
From: Chengguang Xu cgxu519@mykernel.net
[ Upstream commit 909110c060f22e65756659ec6fa957ae75777e00 ]
Setting softlimit larger than hardlimit seems meaningless for disk quota but currently it is allowed. In this case, there may be a bit of comfusion for users when they run df comamnd to directory which has project quota.
For example, we set 20M softlimit and 10M hardlimit of block usage limit for project quota of test_dir(project id 123).
[root@hades f2fs]# repquota -P -a *** Report for project quotas on device /dev/nvme0n1p8 Block grace time: 7days; Inode grace time: 7days Block limits File limits Project used soft hard grace used soft hard grace ---------------------------------------------------------------------- 0 -- 4 0 0 1 0 0 123 +- 10248 20480 10240 2 0 0
The result of df command as below:
[root@hades f2fs]# df -h /mnt/f2fs/test Filesystem Size Used Avail Use% Mounted on /dev/nvme0n1p8 20M 11M 10M 51% /mnt/f2fs
Even though it looks like there is another 10M free space to use, if we write new data to diretory test(inherit project id), the write will fail with errno(-EDQUOT).
After this patch, the df result looks like below.
[root@hades f2fs]# df -h /mnt/f2fs/test Filesystem Size Used Avail Use% Mounted on /dev/nvme0n1p8 10M 10M 0 100% /mnt/f2fs
Signed-off-by: Chengguang Xu cgxu519@mykernel.net Reviewed-by: Chao Yu yuchao0@huawei.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/f2fs/super.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 7a9cc64f5ca3..662c7de58b99 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1148,9 +1148,13 @@ static int f2fs_statfs_project(struct super_block *sb, return PTR_ERR(dquot); spin_lock(&dquot->dq_dqb_lock);
- limit = (dquot->dq_dqb.dqb_bsoftlimit ? - dquot->dq_dqb.dqb_bsoftlimit : - dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits; + limit = 0; + if (dquot->dq_dqb.dqb_bsoftlimit) + limit = dquot->dq_dqb.dqb_bsoftlimit; + if (dquot->dq_dqb.dqb_bhardlimit && + (!limit || dquot->dq_dqb.dqb_bhardlimit < limit)) + limit = dquot->dq_dqb.dqb_bhardlimit; + if (limit && buf->f_blocks > limit) { curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits; buf->f_blocks = limit; @@ -1159,9 +1163,13 @@ static int f2fs_statfs_project(struct super_block *sb, (buf->f_blocks - curblock) : 0; }
- limit = dquot->dq_dqb.dqb_isoftlimit ? - dquot->dq_dqb.dqb_isoftlimit : - dquot->dq_dqb.dqb_ihardlimit; + limit = 0; + if (dquot->dq_dqb.dqb_isoftlimit) + limit = dquot->dq_dqb.dqb_isoftlimit; + if (dquot->dq_dqb.dqb_ihardlimit && + (!limit || dquot->dq_dqb.dqb_ihardlimit < limit)) + limit = dquot->dq_dqb.dqb_ihardlimit; + if (limit && buf->f_files > limit) { buf->f_files = limit; buf->f_ffree =
Hi!
From: Chengguang Xu cgxu519@mykernel.net
[ Upstream commit 909110c060f22e65756659ec6fa957ae75777e00 ]
Setting softlimit larger than hardlimit seems meaningless for disk quota but currently it is allowed. In this case, there may be a bit of comfusion for users when they run df comamnd to directory which has project quota.
For example, we set 20M softlimit and 10M hardlimit of block usage limit for project quota of test_dir(project id 123).
Signed-off-by: Chengguang Xu cgxu519@mykernel.net Reviewed-by: Chao Yu yuchao0@huawei.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org
fs/f2fs/super.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 7a9cc64f5ca3..662c7de58b99 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1148,9 +1148,13 @@ static int f2fs_statfs_project(struct super_block *sb, return PTR_ERR(dquot); spin_lock(&dquot->dq_dqb_lock);
- limit = (dquot->dq_dqb.dqb_bsoftlimit ?
dquot->dq_dqb.dqb_bsoftlimit :
dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
- limit = 0;
- if (dquot->dq_dqb.dqb_bsoftlimit)
limit = dquot->dq_dqb.dqb_bsoftlimit;
- if (dquot->dq_dqb.dqb_bhardlimit &&
(!limit || dquot->dq_dqb.dqb_bhardlimit < limit))
limit = dquot->dq_dqb.dqb_bhardlimit;
- if (limit && buf->f_blocks > limit) {
blocksize disappeared here. That can't be right.
Plus, is this just obfuscated way of saying
limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit)?
Best regards, Pavel
---- 在 星期六, 2020-01-04 01:12:13 Pavel Machek pavel@denx.de 撰写 ----
Hi!
From: Chengguang Xu cgxu519@mykernel.net
[ Upstream commit 909110c060f22e65756659ec6fa957ae75777e00 ]
Setting softlimit larger than hardlimit seems meaningless for disk quota but currently it is allowed. In this case, there may be a bit of comfusion for users when they run df comamnd to directory which has project quota.
For example, we set 20M softlimit and 10M hardlimit of block usage limit for project quota of test_dir(project id 123).
Signed-off-by: Chengguang Xu cgxu519@mykernel.net Reviewed-by: Chao Yu yuchao0@huawei.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org
fs/f2fs/super.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 7a9cc64f5ca3..662c7de58b99 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1148,9 +1148,13 @@ static int f2fs_statfs_project(struct super_block *sb, return PTR_ERR(dquot); spin_lock(&dquot->dq_dqb_lock);
- limit = (dquot->dq_dqb.dqb_bsoftlimit ?
dquot->dq_dqb.dqb_bsoftlimit :
dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
- limit = 0;
- if (dquot->dq_dqb.dqb_bsoftlimit)
limit = dquot->dq_dqb.dqb_bsoftlimit;
- if (dquot->dq_dqb.dqb_bhardlimit &&
(!limit || dquot->dq_dqb.dqb_bhardlimit < limit))
limit = dquot->dq_dqb.dqb_bhardlimit;
- if (limit && buf->f_blocks > limit) {
blocksize disappeared here. That can't be right.
Plus, is this just obfuscated way of saying
limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit)?
Please skip this patch from stable list, I'll send a revised patch to upstream.
Thanks.
On Sat, Jan 04, 2020 at 09:50:43AM +0800, Chengguang Xu wrote:
---- 在 星期六, 2020-01-04 01:12:13 Pavel Machek pavel@denx.de 撰写 ----
Hi!
From: Chengguang Xu cgxu519@mykernel.net
[ Upstream commit 909110c060f22e65756659ec6fa957ae75777e00 ]
Setting softlimit larger than hardlimit seems meaningless for disk quota but currently it is allowed. In this case, there may be a bit of comfusion for users when they run df comamnd to directory which has project quota.
For example, we set 20M softlimit and 10M hardlimit of block usage limit for project quota of test_dir(project id 123).
Signed-off-by: Chengguang Xu cgxu519@mykernel.net Reviewed-by: Chao Yu yuchao0@huawei.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org
fs/f2fs/super.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 7a9cc64f5ca3..662c7de58b99 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1148,9 +1148,13 @@ static int f2fs_statfs_project(struct super_block *sb, return PTR_ERR(dquot); spin_lock(&dquot->dq_dqb_lock);
- limit = (dquot->dq_dqb.dqb_bsoftlimit ?
dquot->dq_dqb.dqb_bsoftlimit :
dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
- limit = 0;
- if (dquot->dq_dqb.dqb_bsoftlimit)
limit = dquot->dq_dqb.dqb_bsoftlimit;
- if (dquot->dq_dqb.dqb_bhardlimit &&
(!limit || dquot->dq_dqb.dqb_bhardlimit < limit))
limit = dquot->dq_dqb.dqb_bhardlimit;
- if (limit && buf->f_blocks > limit) {
blocksize disappeared here. That can't be right.
Plus, is this just obfuscated way of saying
limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit)?
Please skip this patch from stable list, I'll send a revised patch to upstream.
This patch is already in Linus's tree, so you can't send a "revised" version, only one that applies on top of this one :)
That being said, I'll go drop this from the stable queues, thanks. Please let us know when the fixed patch is in Linus's tree and we will be glad to take both of them.
greg k-h
---- 在 星期六, 2020-01-04 19:53:08 Greg Kroah-Hartman gregkh@linuxfoundation.org 撰写 ----
On Sat, Jan 04, 2020 at 09:50:43AM +0800, Chengguang Xu wrote:
---- 在 星期六, 2020-01-04 01:12:13 Pavel Machek pavel@denx.de 撰写 ----
Hi!
From: Chengguang Xu cgxu519@mykernel.net
[ Upstream commit 909110c060f22e65756659ec6fa957ae75777e00 ]
Setting softlimit larger than hardlimit seems meaningless for disk quota but currently it is allowed. In this case, there may be a bit of comfusion for users when they run df comamnd to directory which has project quota.
For example, we set 20M softlimit and 10M hardlimit of block usage limit for project quota of test_dir(project id 123).
Signed-off-by: Chengguang Xu cgxu519@mykernel.net Reviewed-by: Chao Yu yuchao0@huawei.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org
fs/f2fs/super.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 7a9cc64f5ca3..662c7de58b99 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1148,9 +1148,13 @@ static int f2fs_statfs_project(struct super_block *sb, return PTR_ERR(dquot); spin_lock(&dquot->dq_dqb_lock);
- limit = (dquot->dq_dqb.dqb_bsoftlimit ?
dquot->dq_dqb.dqb_bsoftlimit :
dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
- limit = 0;
- if (dquot->dq_dqb.dqb_bsoftlimit)
limit = dquot->dq_dqb.dqb_bsoftlimit;
- if (dquot->dq_dqb.dqb_bhardlimit &&
(!limit || dquot->dq_dqb.dqb_bhardlimit < limit))
limit = dquot->dq_dqb.dqb_bhardlimit;
- if (limit && buf->f_blocks > limit) {
blocksize disappeared here. That can't be right.
Plus, is this just obfuscated way of saying
limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit)?
Please skip this patch from stable list, I'll send a revised patch to upstream.
This patch is already in Linus's tree, so you can't send a "revised" version, only one that applies on top of this one :)
That being said, I'll go drop this from the stable queues, thanks. Please let us know when the fixed patch is in Linus's tree and we will be glad to take both of them.
I got it, Thanks Greg!
---- 在 星期六, 2020-01-04 19:53:08 Greg Kroah-Hartman gregkh@linuxfoundation.org 撰写 ----
On Sat, Jan 04, 2020 at 09:50:43AM +0800, Chengguang Xu wrote:
---- 在 星期六, 2020-01-04 01:12:13 Pavel Machek pavel@denx.de 撰写 ----
Hi!
From: Chengguang Xu cgxu519@mykernel.net
[ Upstream commit 909110c060f22e65756659ec6fa957ae75777e00 ]
Setting softlimit larger than hardlimit seems meaningless for disk quota but currently it is allowed. In this case, there may be a bit of comfusion for users when they run df comamnd to directory which has project quota.
For example, we set 20M softlimit and 10M hardlimit of block usage limit for project quota of test_dir(project id 123).
Signed-off-by: Chengguang Xu cgxu519@mykernel.net Reviewed-by: Chao Yu yuchao0@huawei.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org
fs/f2fs/super.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 7a9cc64f5ca3..662c7de58b99 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1148,9 +1148,13 @@ static int f2fs_statfs_project(struct super_block *sb, return PTR_ERR(dquot); spin_lock(&dquot->dq_dqb_lock);
- limit = (dquot->dq_dqb.dqb_bsoftlimit ?
dquot->dq_dqb.dqb_bsoftlimit :
dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
- limit = 0;
- if (dquot->dq_dqb.dqb_bsoftlimit)
limit = dquot->dq_dqb.dqb_bsoftlimit;
- if (dquot->dq_dqb.dqb_bhardlimit &&
(!limit || dquot->dq_dqb.dqb_bhardlimit < limit))
limit = dquot->dq_dqb.dqb_bhardlimit;
- if (limit && buf->f_blocks > limit) {
blocksize disappeared here. That can't be right.
Plus, is this just obfuscated way of saying
limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit)?
Please skip this patch from stable list, I'll send a revised patch to upstream.
This patch is already in Linus's tree, so you can't send a "revised" version, only one that applies on top of this one :)
That being said, I'll go drop this from the stable queues, thanks. Please let us know when the fixed patch is in Linus's tree and we will be glad to take both of them.
Hi Greg, Sasha
Now the fix patch has been in Linus's tree, you can add below three patches together to backport list.
commit 909110c060f22e6 "f2fs: choose hardlimit when softlimit is larger than hardlimit in f2fs_statfs_project()" commit acdf2172172a511 "f2fs: fix miscounted block limit in f2fs_statfs_project()" commit bf2cbd3c57159c2 "f2fs: code cleanup for f2fs_statfs_project()"
Thanks, Chengguang
On Sat, Feb 01, 2020 at 05:24:25PM +0800, Chengguang Xu wrote:
---- 在 星期六, 2020-01-04 19:53:08 Greg Kroah-Hartman gregkh@linuxfoundation.org 撰写 ----
On Sat, Jan 04, 2020 at 09:50:43AM +0800, Chengguang Xu wrote:
---- 在 星期六, 2020-01-04 01:12:13 Pavel Machek pavel@denx.de 撰写 ----
Hi!
From: Chengguang Xu cgxu519@mykernel.net
[ Upstream commit 909110c060f22e65756659ec6fa957ae75777e00 ]
Setting softlimit larger than hardlimit seems meaningless for disk quota but currently it is allowed. In this case, there may be a bit of comfusion for users when they run df comamnd to directory which has project quota.
For example, we set 20M softlimit and 10M hardlimit of block usage limit for project quota of test_dir(project id 123).
Signed-off-by: Chengguang Xu cgxu519@mykernel.net Reviewed-by: Chao Yu yuchao0@huawei.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org
fs/f2fs/super.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 7a9cc64f5ca3..662c7de58b99 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1148,9 +1148,13 @@ static int f2fs_statfs_project(struct super_block *sb, return PTR_ERR(dquot); spin_lock(&dquot->dq_dqb_lock);
- limit = (dquot->dq_dqb.dqb_bsoftlimit ?
dquot->dq_dqb.dqb_bsoftlimit :
dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
- limit = 0;
- if (dquot->dq_dqb.dqb_bsoftlimit)
limit = dquot->dq_dqb.dqb_bsoftlimit;
- if (dquot->dq_dqb.dqb_bhardlimit &&
(!limit || dquot->dq_dqb.dqb_bhardlimit < limit))
limit = dquot->dq_dqb.dqb_bhardlimit;
- if (limit && buf->f_blocks > limit) {
blocksize disappeared here. That can't be right.
Plus, is this just obfuscated way of saying
limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit)?
Please skip this patch from stable list, I'll send a revised patch to upstream.
This patch is already in Linus's tree, so you can't send a "revised" version, only one that applies on top of this one :)
That being said, I'll go drop this from the stable queues, thanks. Please let us know when the fixed patch is in Linus's tree and we will be glad to take both of them.
Hi Greg, Sasha
Now the fix patch has been in Linus's tree, you can add below three patches together to backport list.
commit 909110c060f22e6 "f2fs: choose hardlimit when softlimit is larger than hardlimit in f2fs_statfs_project()" commit acdf2172172a511 "f2fs: fix miscounted block limit in f2fs_statfs_project()" commit bf2cbd3c57159c2 "f2fs: code cleanup for f2fs_statfs_project()"
All now queued up, thanks for letting us know.
greg k-h
From: Diego Elio Pettenò flameeyes@flameeyes.com
[ Upstream commit 366ba7c71ef77c08d06b18ad61b26e2df7352338 ]
Reading the TOC only works if the device can play audio, otherwise these commands fail (and possibly bring the device to an unhealthy state.)
Similarly, cdrom_mmc3_profile() should only be called if the device supports generic packet commands.
To: Jens Axboe axboe@kernel.dk Cc: linux-kernel@vger.kernel.org Cc: linux-scsi@vger.kernel.org Signed-off-by: Diego Elio Pettenò flameeyes@flameeyes.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/cdrom/cdrom.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index 933268b8d6a5..d3947388a3ef 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -996,6 +996,12 @@ static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks) tracks->xa = 0; tracks->error = 0; cd_dbg(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); + + if (!CDROM_CAN(CDC_PLAY_AUDIO)) { + tracks->error = CDS_NO_INFO; + return; + } + /* Grab the TOC header so we can see how many tracks there are */ ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); if (ret) { @@ -1162,7 +1168,8 @@ int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, ret = open_for_data(cdi); if (ret) goto err; - cdrom_mmc3_profile(cdi); + if (CDROM_CAN(CDC_GENERIC_PACKET)) + cdrom_mmc3_profile(cdi); if (mode & FMODE_WRITE) { ret = -EROFS; if (cdrom_open_write(cdi)) @@ -2882,6 +2889,9 @@ int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) it doesn't give enough information or fails. then we return the toc contents. */ use_toc: + if (!CDROM_CAN(CDC_PLAY_AUDIO)) + return -ENOSYS; + toc.cdte_format = CDROM_MSF; toc.cdte_track = CDROM_LEADOUT; if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
From: Adrian Hunter adrian.hunter@intel.com
[ Upstream commit 0cd032d3b5fcebf5454315400ab310746a81ca53 ]
brstackinsn must be allowed to be set by the user when AUX area data has been captured because, in that case, the branch stack might be synthesized on the fly. This fixes the following error:
Before:
$ perf record -e '{intel_pt//,cpu/mem_inst_retired.all_loads,aux-sample-size=8192/pp}:u' grep -rqs jhgjhg /boot [ perf record: Woken up 19 times to write data ] [ perf record: Captured and wrote 2.274 MB perf.data ] $ perf script -F +brstackinsn --xed --itrace=i1usl100 | head Display of branch stack assembler requested, but non all-branch filter set Hint: run 'perf record -b ...'
After:
$ perf record -e '{intel_pt//,cpu/mem_inst_retired.all_loads,aux-sample-size=8192/pp}:u' grep -rqs jhgjhg /boot [ perf record: Woken up 19 times to write data ] [ perf record: Captured and wrote 2.274 MB perf.data ] $ perf script -F +brstackinsn --xed --itrace=i1usl100 | head grep 13759 [002] 8091.310257: 1862 instructions:uH: 5641d58069eb bmexec+0x86b (/bin/grep) bmexec+2485: 00005641d5806b35 jnz 0x5641d5806bd0 # MISPRED 00005641d5806bd0 movzxb (%r13,%rdx,1), %eax 00005641d5806bd6 add %rdi, %rax 00005641d5806bd9 movzxb -0x1(%rax), %edx 00005641d5806bdd cmp %rax, %r14 00005641d5806be0 jnb 0x5641d58069c0 # MISPRED mismatch of LBR data and executable 00005641d58069c0 movzxb (%r13,%rdx,1), %edi
Fixes: 48d02a1d5c13 ("perf script: Add 'brstackinsn' for branch stacks") Reported-by: Andi Kleen ak@linux.intel.com Signed-off-by: Adrian Hunter adrian.hunter@intel.com Cc: Jiri Olsa jolsa@redhat.com Link: http://lore.kernel.org/lkml/20191127095322.15417-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/builtin-script.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index a4c78499c838..1200973c77cb 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -428,7 +428,7 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel, "selected. Hence, no address to lookup the source line number.\n"); return -EINVAL; } - if (PRINT_FIELD(BRSTACKINSN) && + if (PRINT_FIELD(BRSTACKINSN) && !allow_user_set && !(perf_evlist__combined_branch_type(session->evlist) & PERF_SAMPLE_BRANCH_ANY)) { pr_err("Display of branch stack assembler requested, but non all-branch filter set\n"
From: Arnaldo Carvalho de Melo acme@redhat.com
[ Upstream commit 5b596e0ff0e1852197d4c82d3314db5e43126bf7 ]
To avoid breaking the build on arches where this is not wired up, at least all the other features should be made available and when using this specific routine, the "unknown" should point the user/developer to the need to wire this up on this particular hardware architecture.
Detected in a container mipsel debian cross build environment, where it shows up as:
In file included from /usr/mipsel-linux-gnu/include/stdio.h:867, from /git/linux/tools/perf/lib/include/perf/cpumap.h:6, from util/session.c:13: In function 'printf', inlined from 'regs_dump__printf' at util/session.c:1103:3, inlined from 'regs__printf' at util/session.c:1131:2: /usr/mipsel-linux-gnu/include/bits/stdio2.h:107:10: error: '%-5s' directive argument is null [-Werror=format-overflow=] 107 | return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cross compiler details:
mipsel-linux-gnu-gcc (Debian 9.2.1-8) 9.2.1 20190909
Also on mips64:
In file included from /usr/mips64-linux-gnuabi64/include/stdio.h:867, from /git/linux/tools/perf/lib/include/perf/cpumap.h:6, from util/session.c:13: In function 'printf', inlined from 'regs_dump__printf' at util/session.c:1103:3, inlined from 'regs__printf' at util/session.c:1131:2, inlined from 'regs_user__printf' at util/session.c:1139:3, inlined from 'dump_sample' at util/session.c:1246:3, inlined from 'machines__deliver_event' at util/session.c:1421:3: /usr/mips64-linux-gnuabi64/include/bits/stdio2.h:107:10: error: '%-5s' directive argument is null [-Werror=format-overflow=] 107 | return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'printf', inlined from 'regs_dump__printf' at util/session.c:1103:3, inlined from 'regs__printf' at util/session.c:1131:2, inlined from 'regs_intr__printf' at util/session.c:1147:3, inlined from 'dump_sample' at util/session.c:1249:3, inlined from 'machines__deliver_event' at util/session.c:1421:3: /usr/mips64-linux-gnuabi64/include/bits/stdio2.h:107:10: error: '%-5s' directive argument is null [-Werror=format-overflow=] 107 | return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cross compiler details:
mips64-linux-gnuabi64-gcc (Debian 9.2.1-8) 9.2.1 20190909
Fixes: 2bcd355b71da ("perf tools: Add interface to arch registers sets") Cc: Adrian Hunter adrian.hunter@intel.com Cc: Jiri Olsa jolsa@kernel.org Cc: Namhyung Kim namhyung@kernel.org Link: https://lkml.kernel.org/n/tip-95wjyv4o65nuaeweq31t7l1s@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/util/perf_regs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/perf_regs.h b/tools/perf/util/perf_regs.h index c9319f8d17a6..f732e3af2bd4 100644 --- a/tools/perf/util/perf_regs.h +++ b/tools/perf/util/perf_regs.h @@ -34,7 +34,7 @@ int perf_reg_value(u64 *valp, struct regs_dump *regs, int id);
static inline const char *perf_reg_name(int id __maybe_unused) { - return NULL; + return "unknown"; }
static inline int perf_reg_value(u64 *valp __maybe_unused,
From: Harald Freudenberger freude@linux.ibm.com
[ Upstream commit 6733775a92eacd612ac88afa0fd922e4ffeb2bc7 ]
This patch introduces support for a new architectured reply code 0x8B indicating that a hypervisor layer (if any) has rejected an ap message.
Linux may run as a guest on top of a hypervisor like zVM or KVM. So the crypto hardware seen by the ap bus may be restricted by the hypervisor for example only a subset like only clear key crypto requests may be supported. Other requests will be filtered out - rejected by the hypervisor. The new reply code 0x8B will appear in such cases and needs to get recognized by the ap bus and zcrypt device driver zoo.
Signed-off-by: Harald Freudenberger freude@linux.ibm.com Signed-off-by: Vasily Gorbik gor@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/s390/crypto/zcrypt_error.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/s390/crypto/zcrypt_error.h b/drivers/s390/crypto/zcrypt_error.h index 2e1a27bd97d1..2126f4cc6d37 100644 --- a/drivers/s390/crypto/zcrypt_error.h +++ b/drivers/s390/crypto/zcrypt_error.h @@ -62,6 +62,7 @@ struct error_hdr { #define REP82_ERROR_EVEN_MOD_IN_OPND 0x85 #define REP82_ERROR_RESERVED_FIELD 0x88 #define REP82_ERROR_INVALID_DOMAIN_PENDING 0x8A +#define REP82_ERROR_FILTERED_BY_HYPERVISOR 0x8B #define REP82_ERROR_TRANSPORT_FAIL 0x90 #define REP82_ERROR_PACKET_TRUNCATED 0xA0 #define REP82_ERROR_ZERO_BUFFER_LEN 0xB0 @@ -92,6 +93,7 @@ static inline int convert_error(struct zcrypt_queue *zq, case REP82_ERROR_INVALID_DOMAIN_PRECHECK: case REP82_ERROR_INVALID_DOMAIN_PENDING: case REP82_ERROR_INVALID_SPECIAL_CMD: + case REP82_ERROR_FILTERED_BY_HYPERVISOR: // REP88_ERROR_INVALID_KEY // '82' CEX2A // REP88_ERROR_OPERAND // '84' CEX2A // REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A
From: Masahiro Yamada yamada.masahiro@socionext.com
[ Upstream commit a8de1304b7df30e3a14f2a8b9709bb4ff31a0385 ]
The DTC v1.5.1 added references to (U)INT32_MAX.
This is no problem for user-space programs since <stdint.h> defines (U)INT32_MAX along with (u)int32_t.
For the kernel space, libfdt_env.h needs to be adjusted before we pull in the changes.
In the kernel, we usually use s/u32 instead of (u)int32_t for the fixed-width types.
Accordingly, we already have S/U32_MAX for their max values. So, we should not add (U)INT32_MAX to <linux/limits.h> any more.
Instead, add them to the in-kernel libfdt_env.h to compile the latest libfdt.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com Signed-off-by: Rob Herring robh@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/boot/compressed/libfdt_env.h | 4 +++- arch/powerpc/boot/libfdt_env.h | 2 ++ include/linux/libfdt_env.h | 3 +++ 3 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/compressed/libfdt_env.h b/arch/arm/boot/compressed/libfdt_env.h index b36c0289a308..6a0f1f524466 100644 --- a/arch/arm/boot/compressed/libfdt_env.h +++ b/arch/arm/boot/compressed/libfdt_env.h @@ -2,11 +2,13 @@ #ifndef _ARM_LIBFDT_ENV_H #define _ARM_LIBFDT_ENV_H
+#include <linux/limits.h> #include <linux/types.h> #include <linux/string.h> #include <asm/byteorder.h>
-#define INT_MAX ((int)(~0U>>1)) +#define INT32_MAX S32_MAX +#define UINT32_MAX U32_MAX
typedef __be16 fdt16_t; typedef __be32 fdt32_t; diff --git a/arch/powerpc/boot/libfdt_env.h b/arch/powerpc/boot/libfdt_env.h index 2abc8e83b95e..9757d4f6331e 100644 --- a/arch/powerpc/boot/libfdt_env.h +++ b/arch/powerpc/boot/libfdt_env.h @@ -6,6 +6,8 @@ #include <string.h>
#define INT_MAX ((int)(~0U>>1)) +#define UINT32_MAX ((u32)~0U) +#define INT32_MAX ((s32)(UINT32_MAX >> 1))
#include "of.h"
diff --git a/include/linux/libfdt_env.h b/include/linux/libfdt_env.h index edb0f0c30904..1adf54aad2df 100644 --- a/include/linux/libfdt_env.h +++ b/include/linux/libfdt_env.h @@ -7,6 +7,9 @@
#include <asm/byteorder.h>
+#define INT32_MAX S32_MAX +#define UINT32_MAX U32_MAX + typedef __be16 fdt16_t; typedef __be32 fdt32_t; typedef __be64 fdt64_t;
On Thu 2020-01-02 23:07:19, Greg Kroah-Hartman wrote:
From: Masahiro Yamada yamada.masahiro@socionext.com
[ Upstream commit a8de1304b7df30e3a14f2a8b9709bb4ff31a0385 ]
The DTC v1.5.1 added references to (U)INT32_MAX.
Is this good idea for stable? We are not planning update of the dtc in 4.19.X?
Best regards, Pavel
From: Thomas Richter tmricht@linux.ibm.com
[ Upstream commit 247f265fa502e7b17a0cb0cc330e055a36aafce4 ]
Each SBDT is located at a 4KB page and contains 512 entries. Each entry of a SDBT points to a SDB, a 4KB page containing sampled data. The last entry is a link to another SDBT page.
When an event is created the function sequence executed is:
__hw_perf_event_init() +--> allocate_buffers() +--> realloc_sampling_buffers() +---> alloc_sample_data_block()
Both functions realloc_sampling_buffers() and alloc_sample_data_block() allocate pages and the allocation can fail. This is handled correctly and all allocated pages are freed and error -ENOMEM is returned to the top calling function. Finally the event is not created.
Once the event has been created, the amount of initially allocated SDBT and SDB can be too low. This is detected during measurement interrupt handling, where the amount of lost samples is calculated. If the number of lost samples is too high considering sampling frequency and already allocated SBDs, the number of SDBs is enlarged during the next execution of cpumsf_pmu_enable().
If more SBDs need to be allocated, functions
realloc_sampling_buffers() +---> alloc-sample_data_block()
are called to allocate more pages. Page allocation may fail and the returned error is ignored. A SDBT and SDB setup already exists.
However the modified SDBTs and SDBs might end up in a situation where the first entry of an SDBT does not point to an SDB, but another SDBT, basicly an SBDT without payload. This can not be handled by the interrupt handler, where an SDBT must have at least one entry pointing to an SBD.
Add a check to avoid SDBTs with out payload (SDBs) when enlarging the buffer setup.
Signed-off-by: Thomas Richter tmricht@linux.ibm.com Signed-off-by: Vasily Gorbik gor@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/s390/kernel/perf_cpum_sf.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index df92c2af99b6..5c3fd9032b74 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -193,7 +193,7 @@ static int realloc_sampling_buffer(struct sf_buffer *sfb, unsigned long num_sdb, gfp_t gfp_flags) { int i, rc; - unsigned long *new, *tail; + unsigned long *new, *tail, *tail_prev = NULL;
if (!sfb->sdbt || !sfb->tail) return -EINVAL; @@ -232,6 +232,7 @@ static int realloc_sampling_buffer(struct sf_buffer *sfb, sfb->num_sdbt++; /* Link current page to tail of chain */ *tail = (unsigned long)(void *) new + 1; + tail_prev = tail; tail = new; }
@@ -241,10 +242,22 @@ static int realloc_sampling_buffer(struct sf_buffer *sfb, * issue, a new realloc call (if required) might succeed. */ rc = alloc_sample_data_block(tail, gfp_flags); - if (rc) + if (rc) { + /* Undo last SDBT. An SDBT with no SDB at its first + * entry but with an SDBT entry instead can not be + * handled by the interrupt handler code. + * Avoid this situation. + */ + if (tail_prev) { + sfb->num_sdbt--; + free_page((unsigned long) new); + tail = tail_prev; + } break; + } sfb->num_sdb++; tail++; + tail_prev = new = NULL; /* Allocated at least one SBD */ }
/* Link sampling buffer to its origin */
From: Ding Xiang dingxiang@cmss.chinamobile.com
[ Upstream commit 188c523e1c271d537f3c9f55b6b65bf4476de32f ]
Fix a static code checker warning: fs/ocfs2/acl.c:331 ocfs2_acl_chmod() warn: passing zero to 'PTR_ERR'
Link: http://lkml.kernel.org/r/1dee278b-6c96-eec2-ce76-fe6e07c6e20f@linux.alibaba.... Fixes: 5ee0fbd50fd ("ocfs2: revert using ocfs2_acl_chmod to avoid inode cluster lock hang") Signed-off-by: Ding Xiang dingxiang@cmss.chinamobile.com Reviewed-by: Joseph Qi joseph.qi@linux.alibaba.com Cc: Mark Fasheh mark@fasheh.com Cc: Joel Becker jlbec@evilplan.org Cc: Junxiao Bi junxiao.bi@oracle.com Cc: Changwei Ge gechangwei@live.cn Cc: Gang He ghe@suse.com Cc: Jun Piao piaojun@huawei.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ocfs2/acl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index 917fadca8a7b..b73b78771915 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -335,8 +335,8 @@ int ocfs2_acl_chmod(struct inode *inode, struct buffer_head *bh) down_read(&OCFS2_I(inode)->ip_xattr_sem); acl = ocfs2_get_acl_nolock(inode, ACL_TYPE_ACCESS, bh); up_read(&OCFS2_I(inode)->ip_xattr_sem); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); + if (IS_ERR_OR_NULL(acl)) + return PTR_ERR_OR_ZERO(acl); ret = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); if (ret) return ret;
From: Daniel Baluta daniel.baluta@nxp.com
[ Upstream commit bf159d151a0b844be28882f39e316b5800acaa2b ]
Tx doorbell is handled by txdb_tasklet and doesn't have an associated IRQ.
Anyhow, imx_mu_shutdown ignores this and tries to free an IRQ that wasn't requested for Tx DB resulting in the following warning:
[ 1.967644] Trying to free already-free IRQ 26 [ 1.972108] WARNING: CPU: 2 PID: 157 at kernel/irq/manage.c:1708 __free_irq+0xc0/0x358 [ 1.980024] Modules linked in: [ 1.983088] CPU: 2 PID: 157 Comm: kworker/2:1 Tainted: G [ 1.993524] Hardware name: Freescale i.MX8QXP MEK (DT) [ 1.998668] Workqueue: events deferred_probe_work_func [ 2.003812] pstate: 60000085 (nZCv daIf -PAN -UAO) [ 2.008607] pc : __free_irq+0xc0/0x358 [ 2.012364] lr : __free_irq+0xc0/0x358 [ 2.016111] sp : ffff00001179b7e0 [ 2.019422] x29: ffff00001179b7e0 x28: 0000000000000018 [ 2.024736] x27: ffff000011233000 x26: 0000000000000004 [ 2.030053] x25: 000000000000001a x24: ffff80083bec74d4 [ 2.035369] x23: 0000000000000000 x22: ffff80083bec7588 [ 2.040686] x21: ffff80083b1fe8d8 x20: ffff80083bec7400 [ 2.046003] x19: 0000000000000000 x18: ffffffffffffffff [ 2.051320] x17: 0000000000000000 x16: 0000000000000000 [ 2.056637] x15: ffff0000111296c8 x14: ffff00009179b517 [ 2.061953] x13: ffff00001179b525 x12: ffff000011142000 [ 2.067270] x11: ffff000011129f20 x10: ffff0000105da970 [ 2.072587] x9 : 00000000ffffffd0 x8 : 0000000000000194 [ 2.077903] x7 : 612065657266206f x6 : ffff0000111e7b09 [ 2.083220] x5 : 0000000000000003 x4 : 0000000000000000 [ 2.088537] x3 : 0000000000000000 x2 : 00000000ffffffff [ 2.093854] x1 : 28b70f0a2b60a500 x0 : 0000000000000000 [ 2.099173] Call trace: [ 2.101618] __free_irq+0xc0/0x358 [ 2.105021] free_irq+0x38/0x98 [ 2.108170] imx_mu_shutdown+0x90/0xb0 [ 2.111921] mbox_free_channel.part.2+0x24/0xb8 [ 2.116453] mbox_free_channel+0x18/0x28
This bug is present from the beginning of times.
Cc: Oleksij Rempel o.rempel@pengutronix.de Signed-off-by: Daniel Baluta daniel.baluta@nxp.com Signed-off-by: Richard Zhu hongxing.zhu@nxp.com Reviewed-by: Dong Aisheng aisheng.dong@nxp.com Signed-off-by: Jassi Brar jaswinder.singh@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mailbox/imx-mailbox.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 363d35d5e49d..2f47023cab2b 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -214,8 +214,10 @@ static void imx_mu_shutdown(struct mbox_chan *chan) struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); struct imx_mu_con_priv *cp = chan->con_priv;
- if (cp->type == IMX_MU_TYPE_TXDB) + if (cp->type == IMX_MU_TYPE_TXDB) { tasklet_kill(&cp->txdb_tasklet); + return; + }
imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx) | IMX_MU_xCR_RIEn(cp->idx));
From: Johannes Weiner hannes@cmpxchg.org
[ Upstream commit 204cb79ad42f015312a5bbd7012d09c93d9b46fb ]
Currently, the drop_caches proc file and sysctl read back the last value written, suggesting this is somehow a stateful setting instead of a one-time command. Make it write-only, like e.g. compact_memory.
While mitigating a VM problem at scale in our fleet, there was confusion about whether writing to this file will permanently switch the kernel into a non-caching mode. This influences the decision making in a tense situation, where tens of people are trying to fix tens of thousands of affected machines: Do we need a rollback strategy? What are the performance implications of operating in a non-caching state for several days? It also caused confusion when the kernel team said we may need to write the file several times to make sure it's effective ("But it already reads back 3?").
Link: http://lkml.kernel.org/r/20191031221602.9375-1-hannes@cmpxchg.org Signed-off-by: Johannes Weiner hannes@cmpxchg.org Acked-by: Chris Down chris@chrisdown.name Acked-by: Vlastimil Babka vbabka@suse.cz Acked-by: David Hildenbrand david@redhat.com Acked-by: Michal Hocko mhocko@suse.com Acked-by: Alexey Dobriyan adobriyan@gmail.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/sysctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f8576509c7be..4c4fd4339d33 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1411,7 +1411,7 @@ static struct ctl_table vm_table[] = { .procname = "drop_caches", .data = &sysctl_drop_caches, .maxlen = sizeof(int), - .mode = 0644, + .mode = 0200, .proc_handler = drop_caches_sysctl_handler, .extra1 = &one, .extra2 = &four,
Hi!
From: Johannes Weiner hannes@cmpxchg.org
[ Upstream commit 204cb79ad42f015312a5bbd7012d09c93d9b46fb ]
Currently, the drop_caches proc file and sysctl read back the last value written, suggesting this is somehow a stateful setting instead of a one-time command. Make it write-only, like e.g. compact_memory.
I have no problem with that, but is it good idea for stable?
Plus, I seem to recall that drop_caches was somehow dangerous, debugging-only stuff, one should not use on production system. Did that get fixed in the meantime?
Best regards, Pavel
@@ -1411,7 +1411,7 @@ static struct ctl_table vm_table[] = { .procname = "drop_caches", .data = &sysctl_drop_caches, .maxlen = sizeof(int),
.mode = 0644,
.proc_handler = drop_caches_sysctl_handler, .extra1 = &one, .extra2 = &four,.mode = 0200,
On Fri, Jan 03, 2020 at 07:29:11PM +0100, Pavel Machek wrote:
Hi!
From: Johannes Weiner hannes@cmpxchg.org
[ Upstream commit 204cb79ad42f015312a5bbd7012d09c93d9b46fb ]
Currently, the drop_caches proc file and sysctl read back the last value written, suggesting this is somehow a stateful setting instead of a one-time command. Make it write-only, like e.g. compact_memory.
I have no problem with that, but is it good idea for stable?
Usually I'd drop it, yes. In this case it seems like it made "real" users interact with the switch incorrectly, which I parse as a bug.
Plus, I seem to recall that drop_caches was somehow dangerous, debugging-only stuff, one should not use on production system. Did that get fixed in the meantime?
Sounds like it's being used in production, at scale, so I'd hope so :)
From: Mike Rapoport rppt@linux.ibm.com
[ Upstream commit 3c1c24d91ffd536de0a64688a9df7f49e58fadbc ]
A while ago Andy noticed (http://lkml.kernel.org/r/CALCETrWY+5ynDct7eU_nDUqx=okQvjm=Y5wJvA4ahBja=CQXGw...) that UFFD_FEATURE_EVENT_FORK used by an unprivileged user may have security implications.
As the first step of the solution the following patch limits the availably of UFFD_FEATURE_EVENT_FORK only for those having CAP_SYS_PTRACE.
The usage of CAP_SYS_PTRACE ensures compatibility with CRIU.
Yet, if there are other users of non-cooperative userfaultfd that run without CAP_SYS_PTRACE, they would be broken :(
Current implementation of UFFD_FEATURE_EVENT_FORK modifies the file descriptor table from the read() implementation of uffd, which may have security implications for unprivileged use of the userfaultfd.
Limit availability of UFFD_FEATURE_EVENT_FORK only for callers that have CAP_SYS_PTRACE.
Link: http://lkml.kernel.org/r/1572967777-8812-2-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport rppt@linux.ibm.com Reviewed-by: Andrea Arcangeli aarcange@redhat.com Cc: Daniel Colascione dancol@google.com Cc: Jann Horn jannh@google.com Cc: Lokesh Gidra lokeshgidra@google.com Cc: Nick Kralevich nnk@google.com Cc: Nosh Minwalla nosh@google.com Cc: Pavel Emelyanov ovzxemul@gmail.com Cc: Tim Murray timmurray@google.com Cc: Aleksa Sarai cyphar@cyphar.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/userfaultfd.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index 9c2955f67f70..d269d1139f7f 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -1833,13 +1833,12 @@ static int userfaultfd_api(struct userfaultfd_ctx *ctx, if (copy_from_user(&uffdio_api, buf, sizeof(uffdio_api))) goto out; features = uffdio_api.features; - if (uffdio_api.api != UFFD_API || (features & ~UFFD_API_FEATURES)) { - memset(&uffdio_api, 0, sizeof(uffdio_api)); - if (copy_to_user(buf, &uffdio_api, sizeof(uffdio_api))) - goto out; - ret = -EINVAL; - goto out; - } + ret = -EINVAL; + if (uffdio_api.api != UFFD_API || (features & ~UFFD_API_FEATURES)) + goto err_out; + ret = -EPERM; + if ((features & UFFD_FEATURE_EVENT_FORK) && !capable(CAP_SYS_PTRACE)) + goto err_out; /* report all available features and ioctls to userland */ uffdio_api.features = UFFD_API_FEATURES; uffdio_api.ioctls = UFFD_API_IOCTLS; @@ -1852,6 +1851,11 @@ static int userfaultfd_api(struct userfaultfd_ctx *ctx, ret = 0; out: return ret; +err_out: + memset(&uffdio_api, 0, sizeof(uffdio_api)); + if (copy_to_user(buf, &uffdio_api, sizeof(uffdio_api))) + ret = -EFAULT; + goto out; }
static long userfaultfd_ioctl(struct file *file, unsigned cmd,
From: Greg Kroah-Hartman gregkh@linuxfoundation.org
This reverts commit 4ba32bdbd8c66d9c7822aea8dcf4e51410df84a8 which is commit 14c73bd344da60abaf7da3ea2e7733ddda35bbac upstream.
It breaks the build.
Cc: Guenter Roeck linux@roeck-us.net Cc: Parth Shah parth@linux.ibm.com Cc: Ihor Pasichnyk Ihor.Pasichnyk@ibm.com Cc: Juri Lelli juri.lelli@redhat.com Cc: Waiman Long longman@redhat.com Cc: Gautham R. Shenoy ego@linux.vnet.ibm.com Cc: Srikar Dronamraju srikar@linux.vnet.ibm.com Cc: Phil Auld pauld@redhat.com Cc: Vaidyanathan Srinivasan svaidy@linux.ibm.com Cc: Parth Shah parth@linux.ibm.com Cc: Michael Ellerman mpe@ellerman.id.au Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/powerpc/include/asm/spinlock.h | 4 +--- arch/powerpc/platforms/pseries/setup.c | 7 ------- 2 files changed, 1 insertion(+), 10 deletions(-)
--- a/arch/powerpc/include/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -53,12 +53,10 @@ #endif
#ifdef CONFIG_PPC_PSERIES -DECLARE_STATIC_KEY_FALSE(shared_processor); - #define vcpu_is_preempted vcpu_is_preempted static inline bool vcpu_is_preempted(int cpu) { - if (!static_branch_unlikely(&shared_processor)) + if (!firmware_has_feature(FW_FEATURE_SPLPAR)) return false; return !!(be32_to_cpu(lppaca_of(cpu).yield_count) & 1); } --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -75,9 +75,6 @@ #include "pseries.h" #include "../../../../drivers/pci/pci.h"
-DEFINE_STATIC_KEY_FALSE(shared_processor); -EXPORT_SYMBOL_GPL(shared_processor); - int CMO_PrPSP = -1; int CMO_SecPSP = -1; unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT_4K); @@ -764,10 +761,6 @@ static void __init pSeries_setup_arch(vo
if (firmware_has_feature(FW_FEATURE_LPAR)) { vpa_init(boot_cpuid); - - if (lppaca_shared_proc(get_lppaca())) - static_branch_enable(&shared_processor); - ppc_md.power_save = pseries_lpar_idle; ppc_md.enable_pmcs = pseries_lpar_enable_pmcs; #ifdef CONFIG_PCI_IOV
From: Jan H. Schönherr jschoenh@amazon.de
[ Upstream commit a3a57ddad061acc90bef39635caf2b2330ce8f21 ]
The function mce_severity_amd_smca() requires m->bank to be initialized for correct operation. Fix the one case, where mce_severity() is called without doing so.
Fixes: 6bda529ec42e ("x86/mce: Grade uncorrected errors for SMCA-enabled systems") Fixes: d28af26faa0b ("x86/MCE: Initialize mce.bank in the case of a fatal error in mce_no_way_out()") Signed-off-by: Jan H. Schönherr jschoenh@amazon.de Signed-off-by: Borislav Petkov bp@suse.de Reviewed-by: Tony Luck tony.luck@intel.com Cc: "H. Peter Anvin" hpa@zytor.com Cc: Ingo Molnar mingo@kernel.org Cc: linux-edac linux-edac@vger.kernel.org Cc: stable@vger.kernel.org Cc: Thomas Gleixner tglx@linutronix.de Cc: x86-ml x86@kernel.org Cc: Yazen Ghannam Yazen.Ghannam@amd.com Link: https://lkml.kernel.org/r/20191210000733.17979-4-jschoenh@amazon.de Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/kernel/cpu/mcheck/mce.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 87ed8462a5c7..1f69b12d5bb8 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -812,8 +812,8 @@ static int mce_no_way_out(struct mce *m, char **msg, unsigned long *validp, if (quirk_no_way_out) quirk_no_way_out(i, m, regs);
+ m->bank = i; if (mce_severity(m, mca_cfg.tolerant, &tmp, true) >= MCE_PANIC_SEVERITY) { - m->bank = i; mce_read_aux(m, i); *msg = tmp; return 1;
From: Alexander Lobakin alobakin@dlink.ru
[ Upstream commit 1148f9adbe71415836a18a36c1b4ece999ab0973 ]
proc_dointvec_minmax_bpf_restricted() has been firstly introduced in commit 2e4a30983b0f ("bpf: restrict access to core bpf sysctls") under CONFIG_HAVE_EBPF_JIT. Then, this ifdef has been removed in ede95a63b5e8 ("bpf: add bpf_jit_limit knob to restrict unpriv allocations"), because a new sysctl, bpf_jit_limit, made use of it. Finally, this parameter has become long instead of integer with fdadd04931c2 ("bpf: fix bpf_jit_limit knob for PAGE_SIZE >= 64K") and thus, a new proc_dolongvec_minmax_bpf_restricted() has been added.
With this last change, we got back to that proc_dointvec_minmax_bpf_restricted() is used only under CONFIG_HAVE_EBPF_JIT, but the corresponding ifdef has not been brought back.
So, in configurations like CONFIG_BPF_JIT=y && CONFIG_HAVE_EBPF_JIT=n since v4.20 we have:
CC net/core/sysctl_net_core.o net/core/sysctl_net_core.c:292:1: warning: ‘proc_dointvec_minmax_bpf_restricted’ defined but not used [-Wunused-function] 292 | proc_dointvec_minmax_bpf_restricted(struct ctl_table *table, int write, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppress this by guarding it with CONFIG_HAVE_EBPF_JIT again.
Fixes: fdadd04931c2 ("bpf: fix bpf_jit_limit knob for PAGE_SIZE >= 64K") Signed-off-by: Alexander Lobakin alobakin@dlink.ru Signed-off-by: Daniel Borkmann daniel@iogearbox.net Link: https://lore.kernel.org/bpf/20191218091821.7080-1-alobakin@dlink.ru Signed-off-by: Sasha Levin sashal@kernel.org --- net/core/sysctl_net_core.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c index d67ec17f2cc8..6cec08cd0bb9 100644 --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -281,6 +281,7 @@ static int proc_dointvec_minmax_bpf_enable(struct ctl_table *table, int write, return ret; }
+# ifdef CONFIG_HAVE_EBPF_JIT static int proc_dointvec_minmax_bpf_restricted(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, @@ -291,6 +292,7 @@ proc_dointvec_minmax_bpf_restricted(struct ctl_table *table, int write,
return proc_dointvec_minmax(table, write, buffer, lenp, ppos); } +# endif /* CONFIG_HAVE_EBPF_JIT */
static int proc_dolongvec_minmax_bpf_restricted(struct ctl_table *table, int write,
From: Marco Oliverio marco.oliverio@tanaza.com
[ Upstream commit 0b9173f4688dfa7c5d723426be1d979c24ce3d51 ]
Bridge packets that are forwarded have skb->dst == NULL and get dropped by the check introduced by b60a77386b1d4868f72f6353d35dabe5fbe981f2 (net: make skb_dst_force return true when dst is refcounted).
To fix this we check skb_dst() before skb_dst_force(), so we don't drop skb packet with dst == NULL. This holds also for skb at the PRE_ROUTING hook so we remove the second check.
Fixes: b60a77386b1d ("net: make skb_dst_force return true when dst is refcounted") Signed-off-by: Marco Oliverio marco.oliverio@tanaza.com Signed-off-by: Rocco Folino rocco.folino@tanaza.com Acked-by: Florian Westphal fw@strlen.de Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/netfilter/nf_queue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c index a96a8c16baf9..ee6d98355081 100644 --- a/net/netfilter/nf_queue.c +++ b/net/netfilter/nf_queue.c @@ -174,7 +174,7 @@ static int __nf_queue(struct sk_buff *skb, const struct nf_hook_state *state, goto err; }
- if (!skb_dst_force(skb) && state->hook != NF_INET_PRE_ROUTING) { + if (skb_dst(skb) && !skb_dst_force(skb)) { status = -ENETDOWN; goto err; }
From: Takashi Iwai tiwai@suse.de
[ Upstream commit 475feec0c41ad71cb7d02f0310e56256606b57c5 ]
We made the error message for the CORB/RIRB communication clearer by upgrading to dev_WARN() so that user can notice better. But this struck us like a boomerang: now it caught syzbot and reported back as a fatal issue although it's not really any too serious bug that worth for stopping the whole system.
OK, OK, let's be softy, downgrade it to the standard dev_err() again.
Fixes: dd65f7e19c69 ("ALSA: hda - Show the fatal CORB/RIRB error more clearly") Reported-by: syzbot+b3028ac3933f5c466389@syzkaller.appspotmail.com Link: https://lore.kernel.org/r/20191216151224.30013-1-tiwai@suse.de Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- sound/pci/hda/hda_controller.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c index 8fcb421193e0..fa261b27d858 100644 --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -883,7 +883,7 @@ static int azx_rirb_get_response(struct hdac_bus *bus, unsigned int addr, return -EAGAIN; /* give a chance to retry */ }
- dev_WARN(chip->card->dev, + dev_err(chip->card->dev, "azx_get_response timeout, switching to single_cmd mode: last cmd=0x%08x\n", bus->last_cmd[addr]); chip->single_cmd = 1;
From: Mahesh Bandewar maheshb@google.com
[ Upstream commit 5d485ed88d48f8101a2067348e267c0aaf4ed486 ]
After the recent fix in commit 1899bb325149 ("bonding: fix state transition issue in link monitoring"), the active-backup mode with miimon initially come-up fine but after a link-failure, both members transition into backup state.
Following steps to reproduce the scenario (eth1 and eth2 are the slaves of the bond):
ip link set eth1 up ip link set eth2 down sleep 1 ip link set eth2 up ip link set eth1 down cat /sys/class/net/eth1/bonding_slave/state cat /sys/class/net/eth2/bonding_slave/state
Fixes: 1899bb325149 ("bonding: fix state transition issue in link monitoring") CC: Jay Vosburgh jay.vosburgh@canonical.com Signed-off-by: Mahesh Bandewar maheshb@google.com Acked-by: Jay Vosburgh jay.vosburgh@canonical.com Signed-off-by: Jakub Kicinski jakub.kicinski@netronome.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/bonding/bond_main.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 9b8143dca512..f57b86f1373d 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -2223,9 +2223,6 @@ static void bond_miimon_commit(struct bonding *bond) } else if (BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) { /* make it immediately active */ bond_set_active_slave(slave); - } else if (slave != primary) { - /* prevent it from being the active one */ - bond_set_backup_slave(slave); }
netdev_info(bond->dev, "link status definitely up for interface %s, %u Mbps %s duplex\n",
From: Mattias Jacobsson 2pi@mok.nu
commit 099be748865eece21362aee416c350c0b1ae34df upstream.
Each call to va_copy() should have one, and only one, corresponding call to va_end(). In strbuf_addv() some code paths result in va_end() getting called multiple times. Remove the superfluous va_end().
Signed-off-by: Mattias Jacobsson 2pi@mok.nu Cc: Jiri Olsa jolsa@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Sanskriti Sharma sansharm@redhat.com Link: http://lkml.kernel.org/r/20181229141750.16945-1-2pi@mok.nu Fixes: ce49d8436cff ("perf strbuf: Match va_{add,copy} with va_end") Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Nobuhiro Iwamatsu nobuhiro1.iwamatsu@toshiba.co.jp Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- tools/perf/util/strbuf.c | 1 - 1 file changed, 1 deletion(-)
--- a/tools/perf/util/strbuf.c +++ b/tools/perf/util/strbuf.c @@ -109,7 +109,6 @@ static int strbuf_addv(struct strbuf *sb return ret; } len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap_saved); - va_end(ap_saved); if (len > strbuf_avail(sb)) { pr_debug("this should not happen, your vsnprintf is broken"); va_end(ap_saved);
From: Linus Torvalds torvalds@linux-foundation.org
commit 8a23eb804ca4f2be909e372cf5a9e7b30ae476cd upstream.
This has been discussed several times, and now filesystem people are talking about doing it individually at the filesystem layer, so head that off at the pass and just do it in getdents{64}().
This is partially based on a patch by Jann Horn, but checks for NUL bytes as well, and somewhat simplified.
There's also commentary about how it might be better if invalid names due to filesystem corruption don't cause an immediate failure, but only an error at the end of the readdir(), so that people can still see the filenames that are ok.
There's also been discussion about just how much POSIX strictly speaking requires this since it's about filesystem corruption. It's really more "protect user space from bad behavior" as pointed out by Jann. But since Eric Biederman looked up the POSIX wording, here it is for context:
"From readdir:
The readdir() function shall return a pointer to a structure representing the directory entry at the current position in the directory stream specified by the argument dirp, and position the directory stream at the next entry. It shall return a null pointer upon reaching the end of the directory stream. The structure dirent defined in the <dirent.h> header describes a directory entry.
From definitions:
3.129 Directory Entry (or Link)
An object that associates a filename with a file. Several directory entries can associate names with the same file.
...
3.169 Filename
A name consisting of 1 to {NAME_MAX} bytes used to name a file. The characters composing the name may be selected from the set of all character values excluding the slash character and the null byte. The filenames dot and dot-dot have special meaning. A filename is sometimes referred to as a 'pathname component'."
Note that I didn't bother adding the checks to any legacy interfaces that nobody uses.
Also note that if this ends up being noticeable as a performance regression, we can fix that to do a much more optimized model that checks for both NUL and '/' at the same time one word at a time.
We haven't really tended to optimize 'memchr()', and it only checks for one pattern at a time anyway, and we really _should_ check for NUL too (but see the comment about "soft errors" in the code about why it currently only checks for '/')
See the CONFIG_DCACHE_WORD_ACCESS case of hash_name() for how the name lookup code looks for pathname terminating characters in parallel.
Link: https://lore.kernel.org/lkml/20190118161440.220134-2-jannh@google.com/ Cc: Alexander Viro viro@zeniv.linux.org.uk Cc: Jann Horn jannh@google.com Cc: Eric W. Biederman ebiederm@xmission.com Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Siddharth Chandrasekaran csiddharth@vmware.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/readdir.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+)
--- a/fs/readdir.c +++ b/fs/readdir.c @@ -65,6 +65,40 @@ out: EXPORT_SYMBOL(iterate_dir);
/* + * POSIX says that a dirent name cannot contain NULL or a '/'. + * + * It's not 100% clear what we should really do in this case. + * The filesystem is clearly corrupted, but returning a hard + * error means that you now don't see any of the other names + * either, so that isn't a perfect alternative. + * + * And if you return an error, what error do you use? Several + * filesystems seem to have decided on EUCLEAN being the error + * code for EFSCORRUPTED, and that may be the error to use. Or + * just EIO, which is perhaps more obvious to users. + * + * In order to see the other file names in the directory, the + * caller might want to make this a "soft" error: skip the + * entry, and return the error at the end instead. + * + * Note that this should likely do a "memchr(name, 0, len)" + * check too, since that would be filesystem corruption as + * well. However, that case can't actually confuse user space, + * which has to do a strlen() on the name anyway to find the + * filename length, and the above "soft error" worry means + * that it's probably better left alone until we have that + * issue clarified. + */ +static int verify_dirent_name(const char *name, int len) +{ + if (WARN_ON_ONCE(!len)) + return -EIO; + if (WARN_ON_ONCE(memchr(name, '/', len))) + return -EIO; + return 0; +} + +/* * Traditional linux readdir() handling.. * * "count=1" is a special case, meaning that the buffer is one @@ -173,6 +207,9 @@ static int filldir(struct dir_context *c int reclen = ALIGN(offsetof(struct linux_dirent, d_name) + namlen + 2, sizeof(long));
+ buf->error = verify_dirent_name(name, namlen); + if (unlikely(buf->error)) + return buf->error; buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) return -EINVAL; @@ -259,6 +296,9 @@ static int filldir64(struct dir_context int reclen = ALIGN(offsetof(struct linux_dirent64, d_name) + namlen + 1, sizeof(u64));
+ buf->error = verify_dirent_name(name, namlen); + if (unlikely(buf->error)) + return buf->error; buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) return -EINVAL;
From: Linus Torvalds torvalds@linux-foundation.org
commit b9959c7a347d6adbb558fba7e36e9fef3cba3b07 upstream.
This was always meant to be a temporary thing, just for testing and to see if it actually ever triggered.
The only thing that reported it was syzbot doing disk image fuzzing, and then that warning is expected. So let's just remove it before -rc4, because the extra sanity testing should probably go to -stable, but we don't want the warning to do so.
Reported-by: syzbot+3031f712c7ad5dd4d926@syzkaller.appspotmail.com Fixes: 8a23eb804ca4 ("Make filldir[64]() verify the directory entry filename is valid") Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Siddharth Chandrasekaran csiddharth@vmware.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/readdir.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/readdir.c +++ b/fs/readdir.c @@ -91,9 +91,9 @@ EXPORT_SYMBOL(iterate_dir); */ static int verify_dirent_name(const char *name, int len) { - if (WARN_ON_ONCE(!len)) + if (!len) return -EIO; - if (WARN_ON_ONCE(memchr(name, '/', len))) + if (memchr(name, '/', len)) return -EIO; return 0; }
From: Logan Gunthorpe logang@deltatee.com
commit 6acdf7e19b37cb3a9258603d0eab315079c19c5e upstream.
The part_event_bitmap register is 64 bits wide, so read it with ioread64() instead of the 32-bit ioread32().
Fixes: 52eabba5bcdb ("switchtec: Add IOCTLs to the Switchtec driver") Link: https://lore.kernel.org/r/20190910195833.3891-1-logang@deltatee.com Reported-by: Doug Meyer dmeyer@gigaio.com Signed-off-by: Logan Gunthorpe logang@deltatee.com Signed-off-by: Bjorn Helgaas bhelgaas@google.com Cc: stable@vger.kernel.org # v4.12+ Cc: Kelvin Cao Kelvin.Cao@microchip.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/pci/switch/switchtec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/switch/switchtec.c +++ b/drivers/pci/switch/switchtec.c @@ -633,7 +633,7 @@ static int ioctl_event_summary(struct sw u32 reg;
s.global = ioread32(&stdev->mmio_sw_event->global_summary); - s.part_bitmap = ioread32(&stdev->mmio_sw_event->part_event_bitmap); + s.part_bitmap = readq(&stdev->mmio_sw_event->part_event_bitmap); s.local_part = ioread32(&stdev->mmio_part_cfg->part_event_summary);
for (i = 0; i < stdev->partition_count; i++) {
From: Florian Westphal fw@strlen.de
commit e608f631f0ba5f1fc5ee2e260a3a35d13107cbfe upstream.
syzbot reported following splat:
BUG: KASAN: vmalloc-out-of-bounds in size_entry_mwt net/bridge/netfilter/ebtables.c:2063 [inline] BUG: KASAN: vmalloc-out-of-bounds in compat_copy_entries+0x128b/0x1380 net/bridge/netfilter/ebtables.c:2155 Read of size 4 at addr ffffc900004461f4 by task syz-executor267/7937
CPU: 1 PID: 7937 Comm: syz-executor267 Not tainted 5.5.0-rc1-syzkaller #0 size_entry_mwt net/bridge/netfilter/ebtables.c:2063 [inline] compat_copy_entries+0x128b/0x1380 net/bridge/netfilter/ebtables.c:2155 compat_do_replace+0x344/0x720 net/bridge/netfilter/ebtables.c:2249 compat_do_ebt_set_ctl+0x22f/0x27e net/bridge/netfilter/ebtables.c:2333 [..]
Because padding isn't considered during computation of ->buf_user_offset, "total" is decremented by fewer bytes than it should.
Therefore, the first part of
if (*total < sizeof(*entry) || entry->next_offset < sizeof(*entry))
will pass, -- it should not have. This causes oob access: entry->next_offset is past the vmalloced size.
Reject padding and check that computed user offset (sum of ebt_entry structure plus all individual matches/watchers/targets) is same value that userspace gave us as the offset of the next entry.
Reported-by: syzbot+f68108fed972453a0ad4@syzkaller.appspotmail.com Fixes: 81e675c227ec ("netfilter: ebtables: add CONFIG_COMPAT support") Signed-off-by: Florian Westphal fw@strlen.de Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- net/bridge/netfilter/ebtables.c | 33 ++++++++++++++++----------------- 1 file changed, 16 insertions(+), 17 deletions(-)
--- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -1876,7 +1876,7 @@ static int ebt_buf_count(struct ebt_entr }
static int ebt_buf_add(struct ebt_entries_buf_state *state, - void *data, unsigned int sz) + const void *data, unsigned int sz) { if (state->buf_kern_start == NULL) goto count_only; @@ -1910,7 +1910,7 @@ enum compat_mwt { EBT_COMPAT_TARGET, };
-static int compat_mtw_from_user(struct compat_ebt_entry_mwt *mwt, +static int compat_mtw_from_user(const struct compat_ebt_entry_mwt *mwt, enum compat_mwt compat_mwt, struct ebt_entries_buf_state *state, const unsigned char *base) @@ -1988,22 +1988,23 @@ static int compat_mtw_from_user(struct c /* return size of all matches, watchers or target, including necessary * alignment and padding. */ -static int ebt_size_mwt(struct compat_ebt_entry_mwt *match32, +static int ebt_size_mwt(const struct compat_ebt_entry_mwt *match32, unsigned int size_left, enum compat_mwt type, struct ebt_entries_buf_state *state, const void *base) { + const char *buf = (const char *)match32; int growth = 0; - char *buf;
if (size_left == 0) return 0;
- buf = (char *) match32; - - while (size_left >= sizeof(*match32)) { + do { struct ebt_entry_match *match_kern; int ret;
+ if (size_left < sizeof(*match32)) + return -EINVAL; + match_kern = (struct ebt_entry_match *) state->buf_kern_start; if (match_kern) { char *tmp; @@ -2040,22 +2041,18 @@ static int ebt_size_mwt(struct compat_eb if (match_kern) match_kern->match_size = ret;
- /* rule should have no remaining data after target */ - if (type == EBT_COMPAT_TARGET && size_left) - return -EINVAL; - match32 = (struct compat_ebt_entry_mwt *) buf; - } + } while (size_left);
return growth; }
/* called for all ebt_entry structures. */ -static int size_entry_mwt(struct ebt_entry *entry, const unsigned char *base, +static int size_entry_mwt(const struct ebt_entry *entry, const unsigned char *base, unsigned int *total, struct ebt_entries_buf_state *state) { - unsigned int i, j, startoff, new_offset = 0; + unsigned int i, j, startoff, next_expected_off, new_offset = 0; /* stores match/watchers/targets & offset of next struct ebt_entry: */ unsigned int offsets[4]; unsigned int *offsets_update = NULL; @@ -2141,11 +2138,13 @@ static int size_entry_mwt(struct ebt_ent return ret; }
- startoff = state->buf_user_offset - startoff; + next_expected_off = state->buf_user_offset - startoff; + if (next_expected_off != entry->next_offset) + return -EINVAL;
- if (WARN_ON(*total < startoff)) + if (*total < entry->next_offset) return -EINVAL; - *total -= startoff; + *total -= entry->next_offset; return 0; }
From: Eric Dumazet edumazet@google.com
commit 5c9934b6767b16ba60be22ec3cbd4379ad64170d upstream.
We got another syzbot report [1] that tells us we must use write_lock_irq()/write_unlock_irq() to avoid possible deadlock.
[1]
WARNING: inconsistent lock state 5.5.0-rc1-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-R} usage. syz-executor826/9605 [HC1[1]:SC0[0]:HE0:SE1] takes: ffffffff8a128718 (disc_data_lock){+-..}, at: sp_get.isra.0+0x1d/0xf0 drivers/net/ppp/ppp_synctty.c:138 {HARDIRQ-ON-W} state was registered at: lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4485 __raw_write_lock_bh include/linux/rwlock_api_smp.h:203 [inline] _raw_write_lock_bh+0x33/0x50 kernel/locking/spinlock.c:319 sixpack_close+0x1d/0x250 drivers/net/hamradio/6pack.c:657 tty_ldisc_close.isra.0+0x119/0x1a0 drivers/tty/tty_ldisc.c:489 tty_set_ldisc+0x230/0x6b0 drivers/tty/tty_ldisc.c:585 tiocsetd drivers/tty/tty_io.c:2337 [inline] tty_ioctl+0xe8d/0x14f0 drivers/tty/tty_io.c:2597 vfs_ioctl fs/ioctl.c:47 [inline] file_ioctl fs/ioctl.c:545 [inline] do_vfs_ioctl+0x977/0x14e0 fs/ioctl.c:732 ksys_ioctl+0xab/0xd0 fs/ioctl.c:749 __do_sys_ioctl fs/ioctl.c:756 [inline] __se_sys_ioctl fs/ioctl.c:754 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:754 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe irq event stamp: 3946 hardirqs last enabled at (3945): [<ffffffff87c86e43>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (3945): [<ffffffff87c86e43>] _raw_spin_unlock_irq+0x23/0x80 kernel/locking/spinlock.c:199 hardirqs last disabled at (3946): [<ffffffff8100675f>] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 softirqs last enabled at (2658): [<ffffffff86a8b4df>] spin_unlock_bh include/linux/spinlock.h:383 [inline] softirqs last enabled at (2658): [<ffffffff86a8b4df>] clusterip_netdev_event+0x46f/0x670 net/ipv4/netfilter/ipt_CLUSTERIP.c:222 softirqs last disabled at (2656): [<ffffffff86a8b22b>] spin_lock_bh include/linux/spinlock.h:343 [inline] softirqs last disabled at (2656): [<ffffffff86a8b22b>] clusterip_netdev_event+0x1bb/0x670 net/ipv4/netfilter/ipt_CLUSTERIP.c:196
other info that might help us debug this: Possible unsafe locking scenario:
CPU0 ---- lock(disc_data_lock); <Interrupt> lock(disc_data_lock);
*** DEADLOCK ***
5 locks held by syz-executor826/9605: #0: ffff8880a905e198 (&tty->legacy_mutex){+.+.}, at: tty_lock+0xc7/0x130 drivers/tty/tty_mutex.c:19 #1: ffffffff899a56c0 (rcu_read_lock){....}, at: mutex_spin_on_owner+0x0/0x330 kernel/locking/mutex.c:413 #2: ffff8880a496a2b0 (&(&i->lock)->rlock){-.-.}, at: spin_lock include/linux/spinlock.h:338 [inline] #2: ffff8880a496a2b0 (&(&i->lock)->rlock){-.-.}, at: serial8250_interrupt+0x2d/0x1a0 drivers/tty/serial/8250/8250_core.c:116 #3: ffffffff8c104048 (&port_lock_key){-.-.}, at: serial8250_handle_irq.part.0+0x24/0x330 drivers/tty/serial/8250/8250_port.c:1823 #4: ffff8880a905e090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref+0x22/0x90 drivers/tty/tty_ldisc.c:288
stack backtrace: CPU: 1 PID: 9605 Comm: syz-executor826 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 print_usage_bug.cold+0x327/0x378 kernel/locking/lockdep.c:3101 valid_state kernel/locking/lockdep.c:3112 [inline] mark_lock_irq kernel/locking/lockdep.c:3309 [inline] mark_lock+0xbb4/0x1220 kernel/locking/lockdep.c:3666 mark_usage kernel/locking/lockdep.c:3554 [inline] __lock_acquire+0x1e55/0x4a00 kernel/locking/lockdep.c:3909 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4485 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x50 kernel/locking/spinlock.c:223 sp_get.isra.0+0x1d/0xf0 drivers/net/ppp/ppp_synctty.c:138 sixpack_write_wakeup+0x25/0x340 drivers/net/hamradio/6pack.c:402 tty_wakeup+0xe9/0x120 drivers/tty/tty_io.c:536 tty_port_default_wakeup+0x2b/0x40 drivers/tty/tty_port.c:50 tty_port_tty_wakeup+0x57/0x70 drivers/tty/tty_port.c:387 uart_write_wakeup+0x46/0x70 drivers/tty/serial/serial_core.c:104 serial8250_tx_chars+0x495/0xaf0 drivers/tty/serial/8250/8250_port.c:1761 serial8250_handle_irq.part.0+0x2a2/0x330 drivers/tty/serial/8250/8250_port.c:1834 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1820 [inline] serial8250_default_handle_irq+0xc0/0x150 drivers/tty/serial/8250/8250_port.c:1850 serial8250_interrupt+0xf1/0x1a0 drivers/tty/serial/8250/8250_core.c:126 __handle_irq_event_percpu+0x15d/0x970 kernel/irq/handle.c:149 handle_irq_event_percpu+0x74/0x160 kernel/irq/handle.c:189 handle_irq_event+0xa7/0x134 kernel/irq/handle.c:206 handle_edge_irq+0x25e/0x8d0 kernel/irq/chip.c:830 generic_handle_irq_desc include/linux/irqdesc.h:156 [inline] do_IRQ+0xde/0x280 arch/x86/kernel/irq.c:250 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:607 </IRQ> RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:685 [inline] RIP: 0010:mutex_spin_on_owner+0x247/0x330 kernel/locking/mutex.c:579 Code: c3 be 08 00 00 00 4c 89 e7 e8 e5 06 59 00 4c 89 e0 48 c1 e8 03 42 80 3c 38 00 0f 85 e1 00 00 00 49 8b 04 24 a8 01 75 96 f3 90 <e9> 2f fe ff ff 0f 0b e8 0d 19 09 00 84 c0 0f 85 ff fd ff ff 48 c7 RSP: 0018:ffffc90001eafa20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd7 RAX: 0000000000000000 RBX: ffff88809fd9e0c0 RCX: 1ffffffff13266dd RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffffc90001eafa60 R08: 1ffff11013d22898 R09: ffffed1013d22899 R10: ffffed1013d22898 R11: ffff88809e9144c7 R12: ffff8880a905e138 R13: ffff88809e9144c0 R14: 0000000000000000 R15: dffffc0000000000 mutex_optimistic_spin kernel/locking/mutex.c:673 [inline] __mutex_lock_common kernel/locking/mutex.c:962 [inline] __mutex_lock+0x32b/0x13c0 kernel/locking/mutex.c:1106 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1121 tty_lock+0xc7/0x130 drivers/tty/tty_mutex.c:19 tty_release+0xb5/0xe90 drivers/tty/tty_io.c:1665 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x8e7/0x2ef0 kernel/exit.c:797 do_group_exit+0x135/0x360 kernel/exit.c:895 __do_sys_exit_group kernel/exit.c:906 [inline] __se_sys_exit_group kernel/exit.c:904 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:904 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x43fef8 Code: Bad RIP value. RSP: 002b:00007ffdb07d2338 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fef8 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bf730 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000
Fixes: 6e4e2f811bad ("6pack,mkiss: fix lock inconsistency") Signed-off-by: Eric Dumazet edumazet@google.com Reported-by: syzbot syzkaller@googlegroups.com Cc: Arnd Bergmann arnd@arndb.de Signed-off-by: Jakub Kicinski jakub.kicinski@netronome.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/hamradio/6pack.c | 4 ++-- drivers/net/hamradio/mkiss.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/net/hamradio/6pack.c +++ b/drivers/net/hamradio/6pack.c @@ -654,10 +654,10 @@ static void sixpack_close(struct tty_str { struct sixpack *sp;
- write_lock_bh(&disc_data_lock); + write_lock_irq(&disc_data_lock); sp = tty->disc_data; tty->disc_data = NULL; - write_unlock_bh(&disc_data_lock); + write_unlock_irq(&disc_data_lock); if (!sp) return;
--- a/drivers/net/hamradio/mkiss.c +++ b/drivers/net/hamradio/mkiss.c @@ -783,10 +783,10 @@ static void mkiss_close(struct tty_struc { struct mkiss *ax;
- write_lock_bh(&disc_data_lock); + write_lock_irq(&disc_data_lock); ax = tty->disc_data; tty->disc_data = NULL; - write_unlock_bh(&disc_data_lock); + write_unlock_irq(&disc_data_lock);
if (!ax) return;
From: Eric Dumazet edumazet@google.com
commit 5604285839aaedfb23ebe297799c6e558939334d upstream.
syzbot is kind enough to remind us we need to call skb_may_pull()
BUG: KMSAN: uninit-value in br_nf_forward_arp+0xe61/0x1230 net/bridge/br_netfilter_hooks.c:665 CPU: 1 PID: 11631 Comm: syz-executor.1 Not tainted 5.4.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x220 lib/dump_stack.c:118 kmsan_report+0x128/0x220 mm/kmsan/kmsan_report.c:108 __msan_warning+0x64/0xc0 mm/kmsan/kmsan_instr.c:245 br_nf_forward_arp+0xe61/0x1230 net/bridge/br_netfilter_hooks.c:665 nf_hook_entry_hookfn include/linux/netfilter.h:135 [inline] nf_hook_slow+0x18b/0x3f0 net/netfilter/core.c:512 nf_hook include/linux/netfilter.h:260 [inline] NF_HOOK include/linux/netfilter.h:303 [inline] __br_forward+0x78f/0xe30 net/bridge/br_forward.c:109 br_flood+0xef0/0xfe0 net/bridge/br_forward.c:234 br_handle_frame_finish+0x1a77/0x1c20 net/bridge/br_input.c:162 nf_hook_bridge_pre net/bridge/br_input.c:245 [inline] br_handle_frame+0xfb6/0x1eb0 net/bridge/br_input.c:348 __netif_receive_skb_core+0x20b9/0x51a0 net/core/dev.c:4830 __netif_receive_skb_one_core net/core/dev.c:4927 [inline] __netif_receive_skb net/core/dev.c:5043 [inline] process_backlog+0x610/0x13c0 net/core/dev.c:5874 napi_poll net/core/dev.c:6311 [inline] net_rx_action+0x7a6/0x1aa0 net/core/dev.c:6379 __do_softirq+0x4a1/0x83a kernel/softirq.c:293 do_softirq_own_stack+0x49/0x80 arch/x86/entry/entry_64.S:1091 </IRQ> do_softirq kernel/softirq.c:338 [inline] __local_bh_enable_ip+0x184/0x1d0 kernel/softirq.c:190 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:688 [inline] __dev_queue_xmit+0x38e8/0x4200 net/core/dev.c:3819 dev_queue_xmit+0x4b/0x60 net/core/dev.c:3825 packet_snd net/packet/af_packet.c:2959 [inline] packet_sendmsg+0x8234/0x9100 net/packet/af_packet.c:2984 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg net/socket.c:657 [inline] __sys_sendto+0xc44/0xc70 net/socket.c:1952 __do_sys_sendto net/socket.c:1964 [inline] __se_sys_sendto+0x107/0x130 net/socket.c:1960 __x64_sys_sendto+0x6e/0x90 net/socket.c:1960 do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45a679 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0a3c9e5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045a679 RDX: 000000000000000e RSI: 0000000020000200 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 00000000200000c0 R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0a3c9e66d4 R13: 00000000004c8ec1 R14: 00000000004dfe28 R15: 00000000ffffffff
Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:149 [inline] kmsan_internal_poison_shadow+0x5c/0x110 mm/kmsan/kmsan.c:132 kmsan_slab_alloc+0x97/0x100 mm/kmsan/kmsan_hooks.c:86 slab_alloc_node mm/slub.c:2773 [inline] __kmalloc_node_track_caller+0xe27/0x11a0 mm/slub.c:4381 __kmalloc_reserve net/core/skbuff.c:141 [inline] __alloc_skb+0x306/0xa10 net/core/skbuff.c:209 alloc_skb include/linux/skbuff.h:1049 [inline] alloc_skb_with_frags+0x18c/0xa80 net/core/skbuff.c:5662 sock_alloc_send_pskb+0xafd/0x10a0 net/core/sock.c:2244 packet_alloc_skb net/packet/af_packet.c:2807 [inline] packet_snd net/packet/af_packet.c:2902 [inline] packet_sendmsg+0x63a6/0x9100 net/packet/af_packet.c:2984 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg net/socket.c:657 [inline] __sys_sendto+0xc44/0xc70 net/socket.c:1952 __do_sys_sendto net/socket.c:1964 [inline] __se_sys_sendto+0x107/0x130 net/socket.c:1960 __x64_sys_sendto+0x6e/0x90 net/socket.c:1960 do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fixes: c4e70a87d975 ("netfilter: bridge: rename br_netfilter.c to br_netfilter_hooks.c") Signed-off-by: Eric Dumazet edumazet@google.com Reported-by: syzbot syzkaller@googlegroups.com Reviewed-by: Florian Westphal fw@strlen.de Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- net/bridge/br_netfilter_hooks.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/net/bridge/br_netfilter_hooks.c +++ b/net/bridge/br_netfilter_hooks.c @@ -646,6 +646,9 @@ static unsigned int br_nf_forward_arp(vo nf_bridge_pull_encap_header(skb); }
+ if (unlikely(!pskb_may_pull(skb, sizeof(struct arphdr)))) + return NF_DROP; + if (arp_hdr(skb)->ar_pln != 4) { if (IS_VLAN_ARP(skb)) nf_bridge_push_encap_header(skb);
From: Eric Dumazet edumazet@google.com
commit 71685eb4ce80ae9c49eff82ca4dd15acab215de9 upstream.
We need to explicitely forbid read/store tearing in inet_peer_gc() and inet_putpeer().
The following syzbot report reminds us about inet_putpeer() running without a lock held.
BUG: KCSAN: data-race in inet_putpeer / inet_putpeer
write to 0xffff888121fb2ed0 of 4 bytes by interrupt on cpu 0: inet_putpeer+0x37/0xa0 net/ipv4/inetpeer.c:240 ip4_frag_free+0x3d/0x50 net/ipv4/ip_fragment.c:102 inet_frag_destroy_rcu+0x58/0x80 net/ipv4/inet_fragment.c:228 __rcu_reclaim kernel/rcu/rcu.h:222 [inline] rcu_do_batch+0x256/0x5b0 kernel/rcu/tree.c:2157 rcu_core+0x369/0x4d0 kernel/rcu/tree.c:2377 rcu_core_si+0x12/0x20 kernel/rcu/tree.c:2386 __do_softirq+0x115/0x33f kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0xbb/0xe0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0xe6/0x280 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 native_safe_halt+0xe/0x10 arch/x86/kernel/paravirt.c:71 arch_cpu_idle+0x1f/0x30 arch/x86/kernel/process.c:571 default_idle_call+0x1e/0x40 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x1af/0x280 kernel/sched/idle.c:263
write to 0xffff888121fb2ed0 of 4 bytes by interrupt on cpu 1: inet_putpeer+0x37/0xa0 net/ipv4/inetpeer.c:240 ip4_frag_free+0x3d/0x50 net/ipv4/ip_fragment.c:102 inet_frag_destroy_rcu+0x58/0x80 net/ipv4/inet_fragment.c:228 __rcu_reclaim kernel/rcu/rcu.h:222 [inline] rcu_do_batch+0x256/0x5b0 kernel/rcu/tree.c:2157 rcu_core+0x369/0x4d0 kernel/rcu/tree.c:2377 rcu_core_si+0x12/0x20 kernel/rcu/tree.c:2386 __do_softirq+0x115/0x33f kernel/softirq.c:292 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Fixes: 4b9d9be839fd ("inetpeer: remove unused list") Signed-off-by: Eric Dumazet edumazet@google.com Reported-by: syzbot syzkaller@googlegroups.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- net/ipv4/inetpeer.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)
--- a/net/ipv4/inetpeer.c +++ b/net/ipv4/inetpeer.c @@ -160,7 +160,12 @@ static void inet_peer_gc(struct inet_pee base->total / inet_peer_threshold * HZ; for (i = 0; i < gc_cnt; i++) { p = gc_stack[i]; - delta = (__u32)jiffies - p->dtime; + + /* The READ_ONCE() pairs with the WRITE_ONCE() + * in inet_putpeer() + */ + delta = (__u32)jiffies - READ_ONCE(p->dtime); + if (delta < ttl || !refcount_dec_if_one(&p->refcnt)) gc_stack[i] = NULL; } @@ -237,7 +242,10 @@ EXPORT_SYMBOL_GPL(inet_getpeer);
void inet_putpeer(struct inet_peer *p) { - p->dtime = (__u32)jiffies; + /* The WRITE_ONCE() pairs with itself (we run lockless) + * and the READ_ONCE() in inet_peer_gc() + */ + WRITE_ONCE(p->dtime, (__u32)jiffies);
if (refcount_dec_and_test(&p->refcnt)) call_rcu(&p->rcu, inetpeer_free_rcu);
From: Eric Dumazet edumazet@google.com
commit f8cc62ca3e660ae3fdaee533b1d554297cd2ae82 upstream.
skb_peek_tail() can be used without protection of a lock, as spotted by KCSAN [1]
In order to avoid load-stearing, add a READ_ONCE()
Note that the corresponding WRITE_ONCE() are already there.
[1] BUG: KCSAN: data-race in sk_wait_data / skb_queue_tail
read to 0xffff8880b36a4118 of 8 bytes by task 20426 on cpu 1: skb_peek_tail include/linux/skbuff.h:1784 [inline] sk_wait_data+0x15b/0x250 net/core/sock.c:2477 kcm_wait_data+0x112/0x1f0 net/kcm/kcmsock.c:1103 kcm_recvmsg+0xac/0x320 net/kcm/kcmsock.c:1130 sock_recvmsg_nosec net/socket.c:871 [inline] sock_recvmsg net/socket.c:889 [inline] sock_recvmsg+0x92/0xb0 net/socket.c:885 ___sys_recvmsg+0x1a0/0x3e0 net/socket.c:2480 do_recvmmsg+0x19a/0x5c0 net/socket.c:2601 __sys_recvmmsg+0x1ef/0x200 net/socket.c:2680 __do_sys_recvmmsg net/socket.c:2703 [inline] __se_sys_recvmmsg net/socket.c:2696 [inline] __x64_sys_recvmmsg+0x89/0xb0 net/socket.c:2696 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9
write to 0xffff8880b36a4118 of 8 bytes by task 451 on cpu 0: __skb_insert include/linux/skbuff.h:1852 [inline] __skb_queue_before include/linux/skbuff.h:1958 [inline] __skb_queue_tail include/linux/skbuff.h:1991 [inline] skb_queue_tail+0x7e/0xc0 net/core/skbuff.c:3145 kcm_queue_rcv_skb+0x202/0x310 net/kcm/kcmsock.c:206 kcm_rcv_strparser+0x74/0x4b0 net/kcm/kcmsock.c:370 __strp_recv+0x348/0xf50 net/strparser/strparser.c:309 strp_recv+0x84/0xa0 net/strparser/strparser.c:343 tcp_read_sock+0x174/0x5c0 net/ipv4/tcp.c:1639 strp_read_sock+0xd4/0x140 net/strparser/strparser.c:366 do_strp_work net/strparser/strparser.c:414 [inline] strp_work+0x9a/0xe0 net/strparser/strparser.c:423 process_one_work+0x3d4/0x890 kernel/workqueue.c:2269 worker_thread+0xa0/0x800 kernel/workqueue.c:2415 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 451 Comm: kworker/u4:3 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: kstrp strp_work
Signed-off-by: Eric Dumazet edumazet@google.com Reported-by: syzbot syzkaller@googlegroups.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- include/linux/skbuff.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1669,7 +1669,7 @@ static inline struct sk_buff *skb_peek_n */ static inline struct sk_buff *skb_peek_tail(const struct sk_buff_head *list_) { - struct sk_buff *skb = list_->prev; + struct sk_buff *skb = READ_ONCE(list_->prev);
if (skb == (struct sk_buff *)list_) skb = NULL; @@ -1737,7 +1737,9 @@ static inline void __skb_insert(struct s struct sk_buff *prev, struct sk_buff *next, struct sk_buff_head *list) { - /* see skb_queue_empty_lockless() for the opposite READ_ONCE() */ + /* See skb_queue_empty_lockless() and skb_peek_tail() + * for the opposite READ_ONCE() + */ WRITE_ONCE(newsk->next, next); WRITE_ONCE(newsk->prev, prev); WRITE_ONCE(next->prev, newsk);
From: Eric Dumazet edumazet@google.com
commit bbab7ef235031f6733b5429ae7877bfa22339712 upstream.
This code reads two global variables without protection of a lock. We need READ_ONCE()/WRITE_ONCE() pairs to avoid load/store-tearing and better document the intent.
KCSAN reported : BUG: KCSAN: data-race in icmp_global_allow / icmp_global_allow
read to 0xffffffff861a8014 of 4 bytes by task 11201 on cpu 0: icmp_global_allow+0x36/0x1b0 net/ipv4/icmp.c:254 icmpv6_global_allow net/ipv6/icmp.c:184 [inline] icmpv6_global_allow net/ipv6/icmp.c:179 [inline] icmp6_send+0x493/0x1140 net/ipv6/icmp.c:514 icmpv6_send+0x71/0xb0 net/ipv6/ip6_icmp.c:43 ip6_link_failure+0x43/0x180 net/ipv6/route.c:2640 dst_link_failure include/net/dst.h:419 [inline] vti_xmit net/ipv4/ip_vti.c:243 [inline] vti_tunnel_xmit+0x27f/0xa50 net/ipv4/ip_vti.c:279 __netdev_start_xmit include/linux/netdevice.h:4420 [inline] netdev_start_xmit include/linux/netdevice.h:4434 [inline] xmit_one net/core/dev.c:3280 [inline] dev_hard_start_xmit+0xef/0x430 net/core/dev.c:3296 __dev_queue_xmit+0x14c9/0x1b60 net/core/dev.c:3873 dev_queue_xmit+0x21/0x30 net/core/dev.c:3906 neigh_direct_output+0x1f/0x30 net/core/neighbour.c:1530 neigh_output include/net/neighbour.h:511 [inline] ip6_finish_output2+0x7a6/0xec0 net/ipv6/ip6_output.c:116 __ip6_finish_output net/ipv6/ip6_output.c:142 [inline] __ip6_finish_output+0x2d7/0x330 net/ipv6/ip6_output.c:127 ip6_finish_output+0x41/0x160 net/ipv6/ip6_output.c:152 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0xf2/0x280 net/ipv6/ip6_output.c:175 dst_output include/net/dst.h:436 [inline] ip6_local_out+0x74/0x90 net/ipv6/output_core.c:179
write to 0xffffffff861a8014 of 4 bytes by task 11183 on cpu 1: icmp_global_allow+0x174/0x1b0 net/ipv4/icmp.c:272 icmpv6_global_allow net/ipv6/icmp.c:184 [inline] icmpv6_global_allow net/ipv6/icmp.c:179 [inline] icmp6_send+0x493/0x1140 net/ipv6/icmp.c:514 icmpv6_send+0x71/0xb0 net/ipv6/ip6_icmp.c:43 ip6_link_failure+0x43/0x180 net/ipv6/route.c:2640 dst_link_failure include/net/dst.h:419 [inline] vti_xmit net/ipv4/ip_vti.c:243 [inline] vti_tunnel_xmit+0x27f/0xa50 net/ipv4/ip_vti.c:279 __netdev_start_xmit include/linux/netdevice.h:4420 [inline] netdev_start_xmit include/linux/netdevice.h:4434 [inline] xmit_one net/core/dev.c:3280 [inline] dev_hard_start_xmit+0xef/0x430 net/core/dev.c:3296 __dev_queue_xmit+0x14c9/0x1b60 net/core/dev.c:3873 dev_queue_xmit+0x21/0x30 net/core/dev.c:3906 neigh_direct_output+0x1f/0x30 net/core/neighbour.c:1530 neigh_output include/net/neighbour.h:511 [inline] ip6_finish_output2+0x7a6/0xec0 net/ipv6/ip6_output.c:116 __ip6_finish_output net/ipv6/ip6_output.c:142 [inline] __ip6_finish_output+0x2d7/0x330 net/ipv6/ip6_output.c:127 ip6_finish_output+0x41/0x160 net/ipv6/ip6_output.c:152 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0xf2/0x280 net/ipv6/ip6_output.c:175
Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 11183 Comm: syz-executor.2 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Fixes: 4cdf507d5452 ("icmp: add a global rate limitation") Signed-off-by: Eric Dumazet edumazet@google.com Reported-by: syzbot syzkaller@googlegroups.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- net/ipv4/icmp.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
--- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -254,10 +254,11 @@ bool icmp_global_allow(void) bool rc = false;
/* Check if token bucket is empty and cannot be refilled - * without taking the spinlock. + * without taking the spinlock. The READ_ONCE() are paired + * with the following WRITE_ONCE() in this same function. */ - if (!icmp_global.credit) { - delta = min_t(u32, now - icmp_global.stamp, HZ); + if (!READ_ONCE(icmp_global.credit)) { + delta = min_t(u32, now - READ_ONCE(icmp_global.stamp), HZ); if (delta < HZ / 50) return false; } @@ -267,14 +268,14 @@ bool icmp_global_allow(void) if (delta >= HZ / 50) { incr = sysctl_icmp_msgs_per_sec * delta / HZ ; if (incr) - icmp_global.stamp = now; + WRITE_ONCE(icmp_global.stamp, now); } credit = min_t(u32, icmp_global.credit + incr, sysctl_icmp_msgs_burst); if (credit) { credit--; rc = true; } - icmp_global.credit = credit; + WRITE_ONCE(icmp_global.credit, credit); spin_unlock(&icmp_global.lock); return rc; }
From: Eric Dumazet edumazet@google.com
commit 56144737e67329c9aaed15f942d46a6302e2e3d8 upstream.
syzbot reported various data-race caused by hrtimer_is_queued() reading timer->state. A READ_ONCE() is required there to silence the warning.
Also add the corresponding WRITE_ONCE() when timer->state is set.
In remove_hrtimer() the hrtimer_is_queued() helper is open coded to avoid loading timer->state twice.
KCSAN reported these cases:
BUG: KCSAN: data-race in __remove_hrtimer / tcp_pacing_check
write to 0xffff8880b2a7d388 of 1 bytes by interrupt on cpu 0: __remove_hrtimer+0x52/0x130 kernel/time/hrtimer.c:991 __run_hrtimer kernel/time/hrtimer.c:1496 [inline] __hrtimer_run_queues+0x250/0x600 kernel/time/hrtimer.c:1576 hrtimer_run_softirq+0x10e/0x150 kernel/time/hrtimer.c:1593 __do_softirq+0x115/0x33f kernel/softirq.c:292 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
read to 0xffff8880b2a7d388 of 1 bytes by task 24652 on cpu 1: tcp_pacing_check net/ipv4/tcp_output.c:2235 [inline] tcp_pacing_check+0xba/0x130 net/ipv4/tcp_output.c:2225 tcp_xmit_retransmit_queue+0x32c/0x5a0 net/ipv4/tcp_output.c:3044 tcp_xmit_recovery+0x7c/0x120 net/ipv4/tcp_input.c:3558 tcp_ack+0x17b6/0x3170 net/ipv4/tcp_input.c:3717 tcp_rcv_established+0x37e/0xf50 net/ipv4/tcp_input.c:5696 tcp_v4_do_rcv+0x381/0x4e0 net/ipv4/tcp_ipv4.c:1561 sk_backlog_rcv include/net/sock.h:945 [inline] __release_sock+0x135/0x1e0 net/core/sock.c:2435 release_sock+0x61/0x160 net/core/sock.c:2951 sk_stream_wait_memory+0x3d7/0x7c0 net/core/stream.c:145 tcp_sendmsg_locked+0xb47/0x1f30 net/ipv4/tcp.c:1393 tcp_sendmsg+0x39/0x60 net/ipv4/tcp.c:1434 inet_sendmsg+0x6d/0x90 net/ipv4/af_inet.c:807 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0x9f/0xc0 net/socket.c:657
BUG: KCSAN: data-race in __remove_hrtimer / __tcp_ack_snd_check
write to 0xffff8880a3a65588 of 1 bytes by interrupt on cpu 0: __remove_hrtimer+0x52/0x130 kernel/time/hrtimer.c:991 __run_hrtimer kernel/time/hrtimer.c:1496 [inline] __hrtimer_run_queues+0x250/0x600 kernel/time/hrtimer.c:1576 hrtimer_run_softirq+0x10e/0x150 kernel/time/hrtimer.c:1593 __do_softirq+0x115/0x33f kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0xbb/0xe0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0xe6/0x280 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
read to 0xffff8880a3a65588 of 1 bytes by task 22891 on cpu 1: __tcp_ack_snd_check+0x415/0x4f0 net/ipv4/tcp_input.c:5265 tcp_ack_snd_check net/ipv4/tcp_input.c:5287 [inline] tcp_rcv_established+0x750/0xf50 net/ipv4/tcp_input.c:5708 tcp_v4_do_rcv+0x381/0x4e0 net/ipv4/tcp_ipv4.c:1561 sk_backlog_rcv include/net/sock.h:945 [inline] __release_sock+0x135/0x1e0 net/core/sock.c:2435 release_sock+0x61/0x160 net/core/sock.c:2951 sk_stream_wait_memory+0x3d7/0x7c0 net/core/stream.c:145 tcp_sendmsg_locked+0xb47/0x1f30 net/ipv4/tcp.c:1393 tcp_sendmsg+0x39/0x60 net/ipv4/tcp.c:1434 inet_sendmsg+0x6d/0x90 net/ipv4/af_inet.c:807 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0x9f/0xc0 net/socket.c:657 __sys_sendto+0x21f/0x320 net/socket.c:1952 __do_sys_sendto net/socket.c:1964 [inline] __se_sys_sendto net/socket.c:1960 [inline] __x64_sys_sendto+0x89/0xb0 net/socket.c:1960 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 24652 Comm: syz-executor.3 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ tglx: Added comments ]
Reported-by: syzbot syzkaller@googlegroups.com Signed-off-by: Eric Dumazet edumazet@google.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Link: https://lkml.kernel.org/r/20191106174804.74723-1-edumazet@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- include/linux/hrtimer.h | 14 ++++++++++---- kernel/time/hrtimer.c | 11 +++++++---- 2 files changed, 17 insertions(+), 8 deletions(-)
--- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -430,12 +430,18 @@ extern u64 hrtimer_next_event_without(co
extern bool hrtimer_active(const struct hrtimer *timer);
-/* - * Helper function to check, whether the timer is on one of the queues +/** + * hrtimer_is_queued = check, whether the timer is on one of the queues + * @timer: Timer to check + * + * Returns: True if the timer is queued, false otherwise + * + * The function can be used lockless, but it gives only a current snapshot. */ -static inline int hrtimer_is_queued(struct hrtimer *timer) +static inline bool hrtimer_is_queued(struct hrtimer *timer) { - return timer->state & HRTIMER_STATE_ENQUEUED; + /* The READ_ONCE pairs with the update functions of timer->state */ + return !!(READ_ONCE(timer->state) & HRTIMER_STATE_ENQUEUED); }
/* --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -955,7 +955,8 @@ static int enqueue_hrtimer(struct hrtime
base->cpu_base->active_bases |= 1 << base->index;
- timer->state = HRTIMER_STATE_ENQUEUED; + /* Pairs with the lockless read in hrtimer_is_queued() */ + WRITE_ONCE(timer->state, HRTIMER_STATE_ENQUEUED);
return timerqueue_add(&base->active, &timer->node); } @@ -977,7 +978,8 @@ static void __remove_hrtimer(struct hrti struct hrtimer_cpu_base *cpu_base = base->cpu_base; u8 state = timer->state;
- timer->state = newstate; + /* Pairs with the lockless read in hrtimer_is_queued() */ + WRITE_ONCE(timer->state, newstate); if (!(state & HRTIMER_STATE_ENQUEUED)) return;
@@ -1002,8 +1004,9 @@ static void __remove_hrtimer(struct hrti static inline int remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base, bool restart) { - if (hrtimer_is_queued(timer)) { - u8 state = timer->state; + u8 state = timer->state; + + if (state & HRTIMER_STATE_ENQUEUED) { int reprogram;
/*
Hi!
From: Eric Dumazet edumazet@google.com
commit 56144737e67329c9aaed15f942d46a6302e2e3d8 upstream.
syzbot reported various data-race caused by hrtimer_is_queued() reading timer->state. A READ_ONCE() is required there to silence the warning.
Also add the corresponding WRITE_ONCE() when timer->state is set.
In remove_hrtimer() the hrtimer_is_queued() helper is open coded to avoid loading timer->state twice.
Is there a reason why READ_ONCE is not neccessary in remove_hrtimer?
Should there be comment there explaining it?
Best regards, Pavel
@@ -1002,8 +1004,9 @@ static void __remove_hrtimer(struct hrti static inline int remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base, bool restart) {
- if (hrtimer_is_queued(timer)) {
u8 state = timer->state;
- u8 state = timer->state;
- if (state & HRTIMER_STATE_ENQUEUED) { int reprogram;
/*
From: Netanel Belgazal netanel@amazon.com
[ Upstream commit 24dee0c7478d1a1e00abdf5625b7f921467325dc ]
In netpoll the napi handler could be called with budget equal to zero. Current ENA napi handler doesn't take that into consideration.
The napi handler handles Rx packets in a do-while loop. Currently, the budget check happens only after decrementing the budget, therefore the napi handler, in rare cases, could run over MAX_INT packets.
In addition to that, this moves all budget related variables to int calculation and stop mixing u32 to avoid ambiguity
Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)") Signed-off-by: Netanel Belgazal netanel@amazon.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -1197,8 +1197,8 @@ static int ena_io_poll(struct napi_struc struct ena_napi *ena_napi = container_of(napi, struct ena_napi, napi); struct ena_ring *tx_ring, *rx_ring;
- u32 tx_work_done; - u32 rx_work_done; + int tx_work_done; + int rx_work_done = 0; int tx_budget; int napi_comp_call = 0; int ret; @@ -1215,7 +1215,11 @@ static int ena_io_poll(struct napi_struc }
tx_work_done = ena_clean_tx_irq(tx_ring, tx_budget); - rx_work_done = ena_clean_rx_irq(rx_ring, napi, budget); + /* On netpoll the budget is zero and the handler should only clean the + * tx completions. + */ + if (likely(budget)) + rx_work_done = ena_clean_rx_irq(rx_ring, napi, budget);
/* If the device is about to reset or down, avoid unmask * the interrupt and return 0 so NAPI won't reschedule
From: Vladyslav Tarasiuk vladyslavt@mellanox.com
[ Upstream commit a5bcd72e054aabb93ddc51ed8cde36a5bfc50271 ]
The burning process requires to perform internal allocations of large chunks of memory. This memory doesn't need to be contiguous and can be safely allocated by vzalloc() instead of kzalloc(). This patch changes such allocation to avoid possible out-of-memory failure.
Fixes: 410ed13cae39 ("Add the mlxfw module for Mellanox firmware flash process") Signed-off-by: Vladyslav Tarasiuk vladyslavt@mellanox.com Reviewed-by: Aya Levin ayal@mellanox.com Signed-off-by: Leon Romanovsky leonro@mellanox.com Tested-by: Ido Schimmel idosch@mellanox.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.c +++ b/drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.c @@ -37,6 +37,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/netlink.h> +#include <linux/vmalloc.h> #include <linux/xz.h> #include "mlxfw_mfa2.h" #include "mlxfw_mfa2_file.h" @@ -579,7 +580,7 @@ mlxfw_mfa2_file_component_get(const stru comp_size = be32_to_cpu(comp->size); comp_buf_size = comp_size + mlxfw_mfa2_comp_magic_len;
- comp_data = kmalloc(sizeof(*comp_data) + comp_buf_size, GFP_KERNEL); + comp_data = vzalloc(sizeof(*comp_data) + comp_buf_size); if (!comp_data) return ERR_PTR(-ENOMEM); comp_data->comp.data_size = comp_size; @@ -601,7 +602,7 @@ mlxfw_mfa2_file_component_get(const stru comp_data->comp.data = comp_data->buff + mlxfw_mfa2_comp_magic_len; return &comp_data->comp; err_out: - kfree(comp_data); + vfree(comp_data); return ERR_PTR(err); }
@@ -610,7 +611,7 @@ void mlxfw_mfa2_file_component_put(struc const struct mlxfw_mfa2_comp_data *comp_data;
comp_data = container_of(comp, struct mlxfw_mfa2_comp_data, comp); - kfree(comp_data); + vfree(comp_data); }
void mlxfw_mfa2_file_fini(struct mlxfw_mfa2_file *mfa2_file)
From: Martin Blumenstingl martin.blumenstingl@googlemail.com
[ Upstream commit bd6f48546b9cb7a785344fc78058c420923d7ed8 ]
GXBB and newer SoCs use the fixed FCLK_DIV2 (1GHz) clock as input for the m250_sel clock. Meson8b and Meson8m2 use MPLL2 instead, whose rate can be adjusted at runtime.
So far we have been running MPLL2 with ~250MHz (and the internal m250_div with value 1), which worked enough that we could transfer data with an TX delay of 4ns. Unfortunately there is high packet loss with an RGMII PHY when transferring data (receiving data works fine though). Odroid-C1's u-boot is running with a TX delay of only 2ns as well as the internal m250_div set to 2 - no lost (TX) packets can be observed with that setting in u-boot.
Manual testing has shown that the TX packet loss goes away when using the following settings in Linux (the vendor kernel uses the same settings): - MPLL2 clock set to ~500MHz - m250_div set to 2 - TX delay set to 2ns on the MAC side
Update the m250_div divider settings to only accept dividers greater or equal 2 to fix the TX delay generated by the MAC.
iperf3 results before the change: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 182 MBytes 153 Mbits/sec 514 sender [ 5] 0.00-10.00 sec 182 MBytes 152 Mbits/sec receiver
iperf3 results after the change (including an updated TX delay of 2ns): [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 927 MBytes 778 Mbits/sec 0 sender [ 5] 0.00-10.01 sec 927 MBytes 777 Mbits/sec receiver
Fixes: 4f6a71b84e1afd ("net: stmmac: dwmac-meson8b: fix internal RGMII clock configuration") Signed-off-by: Martin Blumenstingl martin.blumenstingl@googlemail.com Reviewed-by: Andrew Lunn andrew@lunn.ch Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c @@ -118,6 +118,14 @@ static int meson8b_init_rgmii_tx_clk(str struct device *dev = dwmac->dev; const char *parent_name, *mux_parent_names[MUX_CLK_NUM_PARENTS]; struct meson8b_dwmac_clk_configs *clk_configs; + static const struct clk_div_table div_table[] = { + { .div = 2, .val = 2, }, + { .div = 3, .val = 3, }, + { .div = 4, .val = 4, }, + { .div = 5, .val = 5, }, + { .div = 6, .val = 6, }, + { .div = 7, .val = 7, }, + };
clk_configs = devm_kzalloc(dev, sizeof(*clk_configs), GFP_KERNEL); if (!clk_configs) @@ -152,9 +160,9 @@ static int meson8b_init_rgmii_tx_clk(str clk_configs->m250_div.reg = dwmac->regs + PRG_ETH0; clk_configs->m250_div.shift = PRG_ETH0_CLK_M250_DIV_SHIFT; clk_configs->m250_div.width = PRG_ETH0_CLK_M250_DIV_WIDTH; - clk_configs->m250_div.flags = CLK_DIVIDER_ONE_BASED | - CLK_DIVIDER_ALLOW_ZERO | - CLK_DIVIDER_ROUND_CLOSEST; + clk_configs->m250_div.table = div_table; + clk_configs->m250_div.flags = CLK_DIVIDER_ALLOW_ZERO | + CLK_DIVIDER_ROUND_CLOSEST; clk = meson8b_dwmac_register_clk(dwmac, "m250_div", &parent_name, 1, &clk_divider_ops, &clk_configs->m250_div.hw);
From: Vladis Dronov vdronov@redhat.com
[ Upstream commit a33121e5487b424339636b25c35d3a180eaa5f5e ]
In a case when a ptp chardev (like /dev/ptp0) is open but an underlying device is removed, closing this file leads to a race. This reproduces easily in a kvm virtual machine:
ts# cat openptp0.c int main() { ... fp = fopen("/dev/ptp0", "r"); ... sleep(10); } ts# uname -r 5.5.0-rc3-46cf053e ts# cat /proc/cmdline ... slub_debug=FZP ts# modprobe ptp_kvm ts# ./openptp0 & [1] 670 opened /dev/ptp0, sleeping 10s... ts# rmmod ptp_kvm ts# ls /dev/ptp* ls: cannot access '/dev/ptp*': No such file or directory ts# ...woken up [ 48.010809] general protection fault: 0000 [#1] SMP [ 48.012502] CPU: 6 PID: 658 Comm: openptp0 Not tainted 5.5.0-rc3-46cf053e #25 [ 48.014624] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), ... [ 48.016270] RIP: 0010:module_put.part.0+0x7/0x80 [ 48.017939] RSP: 0018:ffffb3850073be00 EFLAGS: 00010202 [ 48.018339] RAX: 000000006b6b6b6b RBX: 6b6b6b6b6b6b6b6b RCX: ffff89a476c00ad0 [ 48.018936] RDX: fffff65a08d3ea08 RSI: 0000000000000247 RDI: 6b6b6b6b6b6b6b6b [ 48.019470] ... ^^^ a slub poison [ 48.023854] Call Trace: [ 48.024050] __fput+0x21f/0x240 [ 48.024288] task_work_run+0x79/0x90 [ 48.024555] do_exit+0x2af/0xab0 [ 48.024799] ? vfs_write+0x16a/0x190 [ 48.025082] do_group_exit+0x35/0x90 [ 48.025387] __x64_sys_exit_group+0xf/0x10 [ 48.025737] do_syscall_64+0x3d/0x130 [ 48.026056] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 48.026479] RIP: 0033:0x7f53b12082f6 [ 48.026792] ... [ 48.030945] Modules linked in: ptp i6300esb watchdog [last unloaded: ptp_kvm] [ 48.045001] Fixing recursive fault but reboot is needed!
This happens in:
static void __fput(struct file *file) { ... if (file->f_op->release) file->f_op->release(inode, file); <<< cdev is kfree'd here if (unlikely(S_ISCHR(inode->i_mode) && inode->i_cdev != NULL && !(mode & FMODE_PATH))) { cdev_put(inode->i_cdev); <<< cdev fields are accessed here
Namely:
__fput() posix_clock_release() kref_put(&clk->kref, delete_clock) <<< the last reference delete_clock() delete_ptp_clock() kfree(ptp) <<< cdev is embedded in ptp cdev_put module_put(p->owner) <<< *p is kfree'd, bang!
Here cdev is embedded in posix_clock which is embedded in ptp_clock. The race happens because ptp_clock's lifetime is controlled by two refcounts: kref and cdev.kobj in posix_clock. This is wrong.
Make ptp_clock's sysfs device a parent of cdev with cdev_device_add() created especially for such cases. This way the parent device with its ptp_clock is not released until all references to the cdev are released. This adds a requirement that an initialized but not exposed struct device should be provided to posix_clock_register() by a caller instead of a simple dev_t.
This approach was adopted from the commit 72139dfa2464 ("watchdog: Fix the race between the release of watchdog_core_data and cdev"). See details of the implementation in the commit 233ed09d7fda ("chardev: add helper function to register char devs with a struct device").
Link: https://lore.kernel.org/linux-fsdevel/20191125125342.6189-1-vdronov@redhat.c... Analyzed-by: Stephen Johnston sjohnsto@redhat.com Analyzed-by: Vern Lovejoy vlovejoy@redhat.com Signed-off-by: Vladis Dronov vdronov@redhat.com Acked-by: Richard Cochran richardcochran@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/ptp/ptp_clock.c | 31 ++++++++++++++----------------- drivers/ptp/ptp_private.h | 2 +- include/linux/posix-clock.h | 19 +++++++++++-------- kernel/time/posix-clock.c | 31 +++++++++++++------------------ 4 files changed, 39 insertions(+), 44 deletions(-)
--- a/drivers/ptp/ptp_clock.c +++ b/drivers/ptp/ptp_clock.c @@ -175,9 +175,9 @@ static struct posix_clock_operations ptp .read = ptp_read, };
-static void delete_ptp_clock(struct posix_clock *pc) +static void ptp_clock_release(struct device *dev) { - struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock); + struct ptp_clock *ptp = container_of(dev, struct ptp_clock, dev);
mutex_destroy(&ptp->tsevq_mux); mutex_destroy(&ptp->pincfg_mux); @@ -222,7 +222,6 @@ struct ptp_clock *ptp_clock_register(str }
ptp->clock.ops = ptp_clock_ops; - ptp->clock.release = delete_ptp_clock; ptp->info = info; ptp->devid = MKDEV(major, index); ptp->index = index; @@ -249,15 +248,6 @@ struct ptp_clock *ptp_clock_register(str if (err) goto no_pin_groups;
- /* Create a new device in our class. */ - ptp->dev = device_create_with_groups(ptp_class, parent, ptp->devid, - ptp, ptp->pin_attr_groups, - "ptp%d", ptp->index); - if (IS_ERR(ptp->dev)) { - err = PTR_ERR(ptp->dev); - goto no_device; - } - /* Register a new PPS source. */ if (info->pps) { struct pps_source_info pps; @@ -273,8 +263,18 @@ struct ptp_clock *ptp_clock_register(str } }
- /* Create a posix clock. */ - err = posix_clock_register(&ptp->clock, ptp->devid); + /* Initialize a new device of our class in our clock structure. */ + device_initialize(&ptp->dev); + ptp->dev.devt = ptp->devid; + ptp->dev.class = ptp_class; + ptp->dev.parent = parent; + ptp->dev.groups = ptp->pin_attr_groups; + ptp->dev.release = ptp_clock_release; + dev_set_drvdata(&ptp->dev, ptp); + dev_set_name(&ptp->dev, "ptp%d", ptp->index); + + /* Create a posix clock and link it to the device. */ + err = posix_clock_register(&ptp->clock, &ptp->dev); if (err) { pr_err("failed to create posix clock\n"); goto no_clock; @@ -286,8 +286,6 @@ no_clock: if (ptp->pps_source) pps_unregister_source(ptp->pps_source); no_pps: - device_destroy(ptp_class, ptp->devid); -no_device: ptp_cleanup_pin_groups(ptp); no_pin_groups: if (ptp->kworker) @@ -317,7 +315,6 @@ int ptp_clock_unregister(struct ptp_cloc if (ptp->pps_source) pps_unregister_source(ptp->pps_source);
- device_destroy(ptp_class, ptp->devid); ptp_cleanup_pin_groups(ptp);
posix_clock_unregister(&ptp->clock); --- a/drivers/ptp/ptp_private.h +++ b/drivers/ptp/ptp_private.h @@ -41,7 +41,7 @@ struct timestamp_event_queue {
struct ptp_clock { struct posix_clock clock; - struct device *dev; + struct device dev; struct ptp_clock_info *info; dev_t devid; int index; /* index into clocks.map */ --- a/include/linux/posix-clock.h +++ b/include/linux/posix-clock.h @@ -82,29 +82,32 @@ struct posix_clock_operations { * * @ops: Functional interface to the clock * @cdev: Character device instance for this clock - * @kref: Reference count. + * @dev: Pointer to the clock's device. * @rwsem: Protects the 'zombie' field from concurrent access. * @zombie: If 'zombie' is true, then the hardware has disappeared. - * @release: A function to free the structure when the reference count reaches - * zero. May be NULL if structure is statically allocated. * * Drivers should embed their struct posix_clock within a private * structure, obtaining a reference to it during callbacks using * container_of(). + * + * Drivers should supply an initialized but not exposed struct device + * to posix_clock_register(). It is used to manage lifetime of the + * driver's private structure. It's 'release' field should be set to + * a release function for this private structure. */ struct posix_clock { struct posix_clock_operations ops; struct cdev cdev; - struct kref kref; + struct device *dev; struct rw_semaphore rwsem; bool zombie; - void (*release)(struct posix_clock *clk); };
/** * posix_clock_register() - register a new clock - * @clk: Pointer to the clock. Caller must provide 'ops' and 'release' - * @devid: Allocated device id + * @clk: Pointer to the clock. Caller must provide 'ops' field + * @dev: Pointer to the initialized device. Caller must provide + * 'release' field * * A clock driver calls this function to register itself with the * clock device subsystem. If 'clk' points to dynamically allocated @@ -113,7 +116,7 @@ struct posix_clock { * * Returns zero on success, non-zero otherwise. */ -int posix_clock_register(struct posix_clock *clk, dev_t devid); +int posix_clock_register(struct posix_clock *clk, struct device *dev);
/** * posix_clock_unregister() - unregister a clock --- a/kernel/time/posix-clock.c +++ b/kernel/time/posix-clock.c @@ -27,8 +27,6 @@
#include "posix-timers.h"
-static void delete_clock(struct kref *kref); - /* * Returns NULL if the posix_clock instance attached to 'fp' is old and stale. */ @@ -138,7 +136,7 @@ static int posix_clock_open(struct inode err = 0;
if (!err) { - kref_get(&clk->kref); + get_device(clk->dev); fp->private_data = clk; } out: @@ -154,7 +152,7 @@ static int posix_clock_release(struct in if (clk->ops.release) err = clk->ops.release(clk);
- kref_put(&clk->kref, delete_clock); + put_device(clk->dev);
fp->private_data = NULL;
@@ -174,38 +172,35 @@ static const struct file_operations posi #endif };
-int posix_clock_register(struct posix_clock *clk, dev_t devid) +int posix_clock_register(struct posix_clock *clk, struct device *dev) { int err;
- kref_init(&clk->kref); init_rwsem(&clk->rwsem);
cdev_init(&clk->cdev, &posix_clock_file_operations); + err = cdev_device_add(&clk->cdev, dev); + if (err) { + pr_err("%s unable to add device %d:%d\n", + dev_name(dev), MAJOR(dev->devt), MINOR(dev->devt)); + return err; + } clk->cdev.owner = clk->ops.owner; - err = cdev_add(&clk->cdev, devid, 1); + clk->dev = dev;
- return err; + return 0; } EXPORT_SYMBOL_GPL(posix_clock_register);
-static void delete_clock(struct kref *kref) -{ - struct posix_clock *clk = container_of(kref, struct posix_clock, kref); - - if (clk->release) - clk->release(clk); -} - void posix_clock_unregister(struct posix_clock *clk) { - cdev_del(&clk->cdev); + cdev_device_del(&clk->cdev, clk->dev);
down_write(&clk->rwsem); clk->zombie = true; up_write(&clk->rwsem);
- kref_put(&clk->kref, delete_clock); + put_device(clk->dev); } EXPORT_SYMBOL_GPL(posix_clock_unregister);
From: Cambda Zhu cambda@linux.alibaba.com
[ Upstream commit 853697504de043ff0bfd815bd3a64de1dce73dc7 ]
From commit 50895b9de1d3 ("tcp: highest_sack fix"), the logic about
setting tp->highest_sack to the head of the send queue was removed. Of course the logic is error prone, but it is logical. Before we remove the pointer to the highest sack skb and use the seq instead, we need to set tp->highest_sack to NULL when there is no skb after the last sack, and then replace NULL with the real skb when new skb inserted into the rtx queue, because the NULL means the highest sack seq is tp->snd_nxt. If tp->highest_sack is NULL and new data sent, the next ACK with sack option will increase tp->reordering unexpectedly.
This patch sets tp->highest_sack to the tail of the rtx queue if it's NULL and new data is sent. The patch keeps the rule that the highest_sack can only be maintained by sack processing, except for this only case.
Fixes: 50895b9de1d3 ("tcp: highest_sack fix") Signed-off-by: Cambda Zhu cambda@linux.alibaba.com Signed-off-by: Eric Dumazet edumazet@google.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv4/tcp_output.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -60,6 +60,9 @@ static void tcp_event_new_data_sent(stru __skb_unlink(skb, &sk->sk_write_queue); tcp_rbtree_insert(&sk->tcp_rtx_queue, skb);
+ if (tp->highest_sack == NULL) + tp->highest_sack = skb; + tp->packets_out += tcp_skb_pcount(skb); if (!prior_packets || icsk->icsk_pending == ICSK_TIME_LOSS_PROBE) tcp_rearm_rto(sk);
From: Antonio Messina amessina@google.com
[ Upstream commit feed8a4fc9d46c3126fb9fcae0e9248270c6321a ]
When the size of the receive buffer for a socket is close to 2^31 when computing if we have enough space in the buffer to copy a packet from the queue to the buffer we might hit an integer overflow.
When an user set net.core.rmem_default to a value close to 2^31 UDP packets are dropped because of this overflow. This can be visible, for instance, with failure to resolve hostnames.
This can be fixed by casting sk_rcvbuf (which is an int) to unsigned int, similarly to how it is done in TCP.
Signed-off-by: Antonio Messina amessina@google.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv4/udp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1412,7 +1412,7 @@ int __udp_enqueue_schedule_skb(struct so * queue contains some other skb */ rmem = atomic_add_return(size, &sk->sk_rmem_alloc); - if (rmem > (size + sk->sk_rcvbuf)) + if (rmem > (size + (unsigned int)sk->sk_rcvbuf)) goto uncharge_drop;
spin_lock(&list->lock);
From: Stefano Garzarella sgarzare@redhat.com
[ Upstream commit 8a3cc29c316c17de590e3ff8b59f3d6cbfd37b0a ]
When we receive a new packet from the guest, we check if the src_cid is correct, but we forgot to check the dst_cid.
The host should accept only packets where dst_cid is equal to the host CID.
Signed-off-by: Stefano Garzarella sgarzare@redhat.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/vhost/vsock.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -436,7 +436,9 @@ static void vhost_vsock_handle_tx_kick(s virtio_transport_deliver_tap_pkt(pkt);
/* Only accept correctly addressed packets */ - if (le64_to_cpu(pkt->hdr.src_cid) == vsock->guest_cid) + if (le64_to_cpu(pkt->hdr.src_cid) == vsock->guest_cid && + le64_to_cpu(pkt->hdr.dst_cid) == + vhost_transport_get_local_cid()) virtio_transport_recv_pkt(pkt); else virtio_transport_free_pkt(pkt);
From: Hangbin Liu liuhangbin@gmail.com
[ Upstream commit bd085ef678b2cc8c38c105673dfe8ff8f5ec0c57 ]
The MTU update code is supposed to be invoked in response to real networking events that update the PMTU. In IPv6 PMTU update function __ip6_rt_update_pmtu() we called dst_confirm_neigh() to update neighbor confirmed time.
But for tunnel code, it will call pmtu before xmit, like: - tnl_update_pmtu() - skb_dst_update_pmtu() - ip6_rt_update_pmtu() - __ip6_rt_update_pmtu() - dst_confirm_neigh()
If the tunnel remote dst mac address changed and we still do the neigh confirm, we will not be able to update neigh cache and ping6 remote will failed.
So for this ip_tunnel_xmit() case, _EVEN_ if the MTU is changed, we should not be invoking dst_confirm_neigh() as we have no evidence of successful two-way communication at this point.
On the other hand it is also important to keep the neigh reachability fresh for TCP flows, so we cannot remove this dst_confirm_neigh() call.
To fix the issue, we have to add a new bool parameter for dst_ops.update_pmtu to choose whether we should do neigh update or not. I will add the parameter in this patch and set all the callers to true to comply with the previous way, and fix the tunnel code one by one on later patches.
v5: No change. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.
Suggested-by: David Miller davem@davemloft.net Reviewed-by: Guillaume Nault gnault@redhat.com Acked-by: David Ahern dsahern@gmail.com Signed-off-by: Hangbin Liu liuhangbin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/gtp.c | 2 +- include/net/dst.h | 2 +- include/net/dst_ops.h | 3 ++- net/bridge/br_nf_core.c | 3 ++- net/decnet/dn_route.c | 6 ++++-- net/ipv4/inet_connection_sock.c | 2 +- net/ipv4/route.c | 9 ++++++--- net/ipv4/xfrm4_policy.c | 5 +++-- net/ipv6/inet6_connection_sock.c | 2 +- net/ipv6/ip6_gre.c | 2 +- net/ipv6/route.c | 22 +++++++++++++++------- net/ipv6/xfrm6_policy.c | 5 +++-- net/netfilter/ipvs/ip_vs_xmit.c | 2 +- net/sctp/transport.c | 2 +- 14 files changed, 42 insertions(+), 25 deletions(-)
--- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -545,7 +545,7 @@ static int gtp_build_skb_ip4(struct sk_b mtu = dst_mtu(&rt->dst); }
- rt->dst.ops->update_pmtu(&rt->dst, NULL, skb, mtu); + rt->dst.ops->update_pmtu(&rt->dst, NULL, skb, mtu, true);
if (!skb_is_gso(skb) && (iph->frag_off & htons(IP_DF)) && mtu < ntohs(iph->tot_len)) { --- a/include/net/dst.h +++ b/include/net/dst.h @@ -527,7 +527,7 @@ static inline void skb_dst_update_pmtu(s struct dst_entry *dst = skb_dst(skb);
if (dst && dst->ops->update_pmtu) - dst->ops->update_pmtu(dst, NULL, skb, mtu); + dst->ops->update_pmtu(dst, NULL, skb, mtu, true); }
static inline void skb_tunnel_check_pmtu(struct sk_buff *skb, --- a/include/net/dst_ops.h +++ b/include/net/dst_ops.h @@ -27,7 +27,8 @@ struct dst_ops { struct dst_entry * (*negative_advice)(struct dst_entry *); void (*link_failure)(struct sk_buff *); void (*update_pmtu)(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu); + struct sk_buff *skb, u32 mtu, + bool confirm_neigh); void (*redirect)(struct dst_entry *dst, struct sock *sk, struct sk_buff *skb); int (*local_out)(struct net *net, struct sock *sk, struct sk_buff *skb); --- a/net/bridge/br_nf_core.c +++ b/net/bridge/br_nf_core.c @@ -26,7 +26,8 @@ #endif
static void fake_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu) + struct sk_buff *skb, u32 mtu, + bool confirm_neigh) { }
--- a/net/decnet/dn_route.c +++ b/net/decnet/dn_route.c @@ -118,7 +118,8 @@ static void dn_dst_ifdown(struct dst_ent static struct dst_entry *dn_dst_negative_advice(struct dst_entry *); static void dn_dst_link_failure(struct sk_buff *); static void dn_dst_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb , u32 mtu); + struct sk_buff *skb , u32 mtu, + bool confirm_neigh); static void dn_dst_redirect(struct dst_entry *dst, struct sock *sk, struct sk_buff *skb); static struct neighbour *dn_dst_neigh_lookup(const struct dst_entry *dst, @@ -259,7 +260,8 @@ static int dn_dst_gc(struct dst_ops *ops * advertise to the other end). */ static void dn_dst_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu) + struct sk_buff *skb, u32 mtu, + bool confirm_neigh) { struct dn_route *rt = (struct dn_route *) dst; struct neighbour *n = rt->n; --- a/net/ipv4/inet_connection_sock.c +++ b/net/ipv4/inet_connection_sock.c @@ -1089,7 +1089,7 @@ struct dst_entry *inet_csk_update_pmtu(s if (!dst) goto out; } - dst->ops->update_pmtu(dst, sk, NULL, mtu); + dst->ops->update_pmtu(dst, sk, NULL, mtu, true);
dst = __sk_dst_check(sk, 0); if (!dst) --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -142,7 +142,8 @@ static unsigned int ipv4_mtu(const stru static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst); static void ipv4_link_failure(struct sk_buff *skb); static void ip_rt_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu); + struct sk_buff *skb, u32 mtu, + bool confirm_neigh); static void ip_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_buff *skb); static void ipv4_dst_destroy(struct dst_entry *dst); @@ -1035,7 +1036,8 @@ static void __ip_rt_update_pmtu(struct r }
static void ip_rt_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu) + struct sk_buff *skb, u32 mtu, + bool confirm_neigh) { struct rtable *rt = (struct rtable *) dst; struct flowi4 fl4; @@ -2559,7 +2561,8 @@ static unsigned int ipv4_blackhole_mtu(c }
static void ipv4_rt_blackhole_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu) + struct sk_buff *skb, u32 mtu, + bool confirm_neigh) { }
--- a/net/ipv4/xfrm4_policy.c +++ b/net/ipv4/xfrm4_policy.c @@ -222,12 +222,13 @@ _decode_session4(struct sk_buff *skb, st }
static void xfrm4_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu) + struct sk_buff *skb, u32 mtu, + bool confirm_neigh) { struct xfrm_dst *xdst = (struct xfrm_dst *)dst; struct dst_entry *path = xdst->route;
- path->ops->update_pmtu(path, sk, skb, mtu); + path->ops->update_pmtu(path, sk, skb, mtu, confirm_neigh); }
static void xfrm4_redirect(struct dst_entry *dst, struct sock *sk, --- a/net/ipv6/inet6_connection_sock.c +++ b/net/ipv6/inet6_connection_sock.c @@ -150,7 +150,7 @@ struct dst_entry *inet6_csk_update_pmtu(
if (IS_ERR(dst)) return NULL; - dst->ops->update_pmtu(dst, sk, NULL, mtu); + dst->ops->update_pmtu(dst, sk, NULL, mtu, true);
dst = inet6_csk_route_socket(sk, &fl6); return IS_ERR(dst) ? NULL : dst; --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -1060,7 +1060,7 @@ static netdev_tx_t ip6erspan_tunnel_xmit
/* TooBig packet may have updated dst->dev's mtu */ if (!t->parms.collect_md && dst && dst_mtu(dst) > dst->dev->mtu) - dst->ops->update_pmtu(dst, NULL, skb, dst->dev->mtu); + dst->ops->update_pmtu(dst, NULL, skb, dst->dev->mtu, true);
err = ip6_tnl_xmit(skb, dev, dsfield, &fl6, encap_limit, &mtu, NEXTHDR_GRE); --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -99,7 +99,8 @@ static int ip6_pkt_prohibit(struct sk_b static int ip6_pkt_prohibit_out(struct net *net, struct sock *sk, struct sk_buff *skb); static void ip6_link_failure(struct sk_buff *skb); static void ip6_rt_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu); + struct sk_buff *skb, u32 mtu, + bool confirm_neigh); static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_buff *skb); static int rt6_score_route(struct fib6_info *rt, int oif, int strict); @@ -266,7 +267,8 @@ static unsigned int ip6_blackhole_mtu(co }
static void ip6_rt_blackhole_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu) + struct sk_buff *skb, u32 mtu, + bool confirm_neigh) { }
@@ -2352,7 +2354,8 @@ static bool rt6_cache_allowed_for_pmtu(c }
static void __ip6_rt_update_pmtu(struct dst_entry *dst, const struct sock *sk, - const struct ipv6hdr *iph, u32 mtu) + const struct ipv6hdr *iph, u32 mtu, + bool confirm_neigh) { const struct in6_addr *daddr, *saddr; struct rt6_info *rt6 = (struct rt6_info *)dst; @@ -2370,7 +2373,10 @@ static void __ip6_rt_update_pmtu(struct daddr = NULL; saddr = NULL; } - dst_confirm_neigh(dst, daddr); + + if (confirm_neigh) + dst_confirm_neigh(dst, daddr); + mtu = max_t(u32, mtu, IPV6_MIN_MTU); if (mtu >= dst_mtu(dst)) return; @@ -2401,9 +2407,11 @@ static void __ip6_rt_update_pmtu(struct }
static void ip6_rt_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu) + struct sk_buff *skb, u32 mtu, + bool confirm_neigh) { - __ip6_rt_update_pmtu(dst, sk, skb ? ipv6_hdr(skb) : NULL, mtu); + __ip6_rt_update_pmtu(dst, sk, skb ? ipv6_hdr(skb) : NULL, mtu, + confirm_neigh); }
void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu, @@ -2423,7 +2431,7 @@ void ip6_update_pmtu(struct sk_buff *skb
dst = ip6_route_output(net, NULL, &fl6); if (!dst->error) - __ip6_rt_update_pmtu(dst, NULL, iph, ntohl(mtu)); + __ip6_rt_update_pmtu(dst, NULL, iph, ntohl(mtu), true); dst_release(dst); } EXPORT_SYMBOL_GPL(ip6_update_pmtu); --- a/net/ipv6/xfrm6_policy.c +++ b/net/ipv6/xfrm6_policy.c @@ -221,12 +221,13 @@ _decode_session6(struct sk_buff *skb, st }
static void xfrm6_update_pmtu(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, u32 mtu) + struct sk_buff *skb, u32 mtu, + bool confirm_neigh) { struct xfrm_dst *xdst = (struct xfrm_dst *)dst; struct dst_entry *path = xdst->route;
- path->ops->update_pmtu(path, sk, skb, mtu); + path->ops->update_pmtu(path, sk, skb, mtu, confirm_neigh); }
static void xfrm6_redirect(struct dst_entry *dst, struct sock *sk, --- a/net/netfilter/ipvs/ip_vs_xmit.c +++ b/net/netfilter/ipvs/ip_vs_xmit.c @@ -209,7 +209,7 @@ static inline void maybe_update_pmtu(int struct rtable *ort = skb_rtable(skb);
if (!skb->dev && sk && sk_fullsock(sk)) - ort->dst.ops->update_pmtu(&ort->dst, sk, NULL, mtu); + ort->dst.ops->update_pmtu(&ort->dst, sk, NULL, mtu, true); }
static inline bool ensure_mtu_is_adequate(struct netns_ipvs *ipvs, int skb_af, --- a/net/sctp/transport.c +++ b/net/sctp/transport.c @@ -278,7 +278,7 @@ bool sctp_transport_update_pmtu(struct s
pf->af->from_sk(&addr, sk); pf->to_sk_daddr(&t->ipaddr, sk); - dst->ops->update_pmtu(dst, sk, NULL, pmtu); + dst->ops->update_pmtu(dst, sk, NULL, pmtu, true); pf->to_sk_daddr(&addr, sk);
dst = sctp_transport_dst_check(t);
From: Hangbin Liu liuhangbin@gmail.com
[ Upstream commit 675d76ad0ad5bf41c9a129772ef0aba8f57ea9a7 ]
When we do ipv6 gre pmtu update, we will also do neigh confirm currently. This will cause the neigh cache be refreshed and set to REACHABLE before xmit.
But if the remote mac address changed, e.g. device is deleted and recreated, we will not able to notice this and still use the old mac address as the neigh cache is REACHABLE.
Fix this by disable neigh confirm when do pmtu update
v5: No change. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.
Reported-by: Jianlin Shi jishi@redhat.com Reviewed-by: Guillaume Nault gnault@redhat.com Acked-by: David Ahern dsahern@gmail.com Signed-off-by: Hangbin Liu liuhangbin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv6/ip6_gre.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -1060,7 +1060,7 @@ static netdev_tx_t ip6erspan_tunnel_xmit
/* TooBig packet may have updated dst->dev's mtu */ if (!t->parms.collect_md && dst && dst_mtu(dst) > dst->dev->mtu) - dst->ops->update_pmtu(dst, NULL, skb, dst->dev->mtu, true); + dst->ops->update_pmtu(dst, NULL, skb, dst->dev->mtu, false);
err = ip6_tnl_xmit(skb, dev, dsfield, &fl6, encap_limit, &mtu, NEXTHDR_GRE);
From: Hangbin Liu liuhangbin@gmail.com
[ Upstream commit 6e9105c73f8d2163d12d5dfd762fd75483ed30f5 ]
When do IPv6 tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end, we should not call dst_confirm_neigh() as there is no two-way communication.
Although GTP only support ipv4 right now, and __ip_rt_update_pmtu() does not call dst_confirm_neigh(), we still set it to false to keep consistency with IPv6 code.
v5: No change. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.
Reviewed-by: Guillaume Nault gnault@redhat.com Acked-by: David Ahern dsahern@gmail.com Signed-off-by: Hangbin Liu liuhangbin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/gtp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -545,7 +545,7 @@ static int gtp_build_skb_ip4(struct sk_b mtu = dst_mtu(&rt->dst); }
- rt->dst.ops->update_pmtu(&rt->dst, NULL, skb, mtu, true); + rt->dst.ops->update_pmtu(&rt->dst, NULL, skb, mtu, false);
if (!skb_is_gso(skb) && (iph->frag_off & htons(IP_DF)) && mtu < ntohs(iph->tot_len)) {
From: Hangbin Liu liuhangbin@gmail.com
[ Upstream commit 07dc35c6e3cc3c001915d05f5bf21f80a39a0970 ]
Add a new function skb_dst_update_pmtu_no_confirm() for callers who need update pmtu but should not do neighbor confirm.
v5: No change. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.
Reviewed-by: Guillaume Nault gnault@redhat.com Acked-by: David Ahern dsahern@gmail.com Signed-off-by: Hangbin Liu liuhangbin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/net/dst.h | 9 +++++++++ 1 file changed, 9 insertions(+)
--- a/include/net/dst.h +++ b/include/net/dst.h @@ -530,6 +530,15 @@ static inline void skb_dst_update_pmtu(s dst->ops->update_pmtu(dst, NULL, skb, mtu, true); }
+/* update dst pmtu but not do neighbor confirm */ +static inline void skb_dst_update_pmtu_no_confirm(struct sk_buff *skb, u32 mtu) +{ + struct dst_entry *dst = skb_dst(skb); + + if (dst && dst->ops->update_pmtu) + dst->ops->update_pmtu(dst, NULL, skb, mtu, false); +} + static inline void skb_tunnel_check_pmtu(struct sk_buff *skb, struct dst_entry *encap_dst, int headroom)
From: Hangbin Liu liuhangbin@gmail.com
[ Upstream commit 7a1592bcb15d71400a98632727791d1e68ea0ee8 ]
When do tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end, we should not call dst_confirm_neigh() as there is no two-way communication.
v5: No Change. v4: Update commit description v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.
Fixes: 0dec879f636f ("net: use dst_confirm_neigh for UDP, RAW, ICMP, L2TP") Reviewed-by: Guillaume Nault gnault@redhat.com Tested-by: Guillaume Nault gnault@redhat.com Acked-by: David Ahern dsahern@gmail.com Signed-off-by: Hangbin Liu liuhangbin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv4/ip_tunnel.c | 2 +- net/ipv6/ip6_tunnel.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-)
--- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -513,7 +513,7 @@ static int tnl_update_pmtu(struct net_de else mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
- skb_dst_update_pmtu(skb, mtu); + skb_dst_update_pmtu_no_confirm(skb, mtu);
if (skb->protocol == htons(ETH_P_IP)) { if (!skb_is_gso(skb) && --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -645,7 +645,7 @@ ip4ip6_err(struct sk_buff *skb, struct i if (rel_info > dst_mtu(skb_dst(skb2))) goto out;
- skb_dst_update_pmtu(skb2, rel_info); + skb_dst_update_pmtu_no_confirm(skb2, rel_info); }
icmp_send(skb2, rel_type, rel_code, htonl(rel_info)); @@ -1137,7 +1137,7 @@ route_lookup: mtu = max(mtu, skb->protocol == htons(ETH_P_IPV6) ? IPV6_MIN_MTU : IPV4_MIN_MTU);
- skb_dst_update_pmtu(skb, mtu); + skb_dst_update_pmtu_no_confirm(skb, mtu); if (skb->len - t->tun_hlen - eth_hlen > mtu && !skb_is_gso(skb)) { *pmtu = mtu; err = -EMSGSIZE;
From: Hangbin Liu liuhangbin@gmail.com
[ Upstream commit 8247a79efa2f28b44329f363272550c1738377de ]
When do IPv6 tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end, we should not call dst_confirm_neigh() as there is no two-way communication.
Although vti and vti6 are immune to this problem because they are IFF_NOARP interfaces, as Guillaume pointed. There is still no sense to confirm neighbour here.
v5: Update commit description. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.
Reviewed-by: Guillaume Nault gnault@redhat.com Acked-by: David Ahern dsahern@gmail.com Signed-off-by: Hangbin Liu liuhangbin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv4/ip_vti.c | 2 +- net/ipv6/ip6_vti.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
--- a/net/ipv4/ip_vti.c +++ b/net/ipv4/ip_vti.c @@ -235,7 +235,7 @@ static netdev_tx_t vti_xmit(struct sk_bu
mtu = dst_mtu(dst); if (skb->len > mtu) { - skb_dst_update_pmtu(skb, mtu); + skb_dst_update_pmtu_no_confirm(skb, mtu); if (skb->protocol == htons(ETH_P_IP)) { icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu)); --- a/net/ipv6/ip6_vti.c +++ b/net/ipv6/ip6_vti.c @@ -483,7 +483,7 @@ vti6_xmit(struct sk_buff *skb, struct ne
mtu = dst_mtu(dst); if (skb->len > mtu) { - skb_dst_update_pmtu(skb, mtu); + skb_dst_update_pmtu_no_confirm(skb, mtu);
if (skb->protocol == htons(ETH_P_IPV6)) { if (mtu < IPV6_MIN_MTU)
From: Hangbin Liu liuhangbin@gmail.com
[ Upstream commit 4d42df46d6372ece4cb4279870b46c2ea7304a47 ]
When do IPv6 tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end, we should not call dst_confirm_neigh() as there is no two-way communication.
v5: No change. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.
Reviewed-by: Guillaume Nault gnault@redhat.com Acked-by: David Ahern dsahern@gmail.com Signed-off-by: Hangbin Liu liuhangbin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv6/sit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -943,7 +943,7 @@ static netdev_tx_t ipip6_tunnel_xmit(str }
if (tunnel->parms.iph.daddr) - skb_dst_update_pmtu(skb, mtu); + skb_dst_update_pmtu_no_confirm(skb, mtu);
if (skb->len > mtu && !skb_is_gso(skb)) { icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
From: Hangbin Liu liuhangbin@gmail.com
[ Upstream commit f081042d128a0c7acbd67611def62e1b52e2d294 ]
When do IPv6 tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end, we should not call dst_confirm_neigh() as there is no two-way communication.
So disable the neigh confirm for vxlan and geneve pmtu update.
v5: No change. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.
Fixes: a93bf0ff4490 ("vxlan: update skb dst pmtu on tx path") Fixes: 52a589d51f10 ("geneve: update skb dst pmtu on tx path") Reviewed-by: Guillaume Nault gnault@redhat.com Tested-by: Guillaume Nault gnault@redhat.com Acked-by: David Ahern dsahern@gmail.com Signed-off-by: Hangbin Liu liuhangbin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/net/dst.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/net/dst.h +++ b/include/net/dst.h @@ -546,7 +546,7 @@ static inline void skb_tunnel_check_pmtu u32 encap_mtu = dst_mtu(encap_dst);
if (skb->len > encap_mtu - headroom) - skb_dst_update_pmtu(skb, encap_mtu - headroom); + skb_dst_update_pmtu_no_confirm(skb, encap_mtu - headroom); }
#endif /* _NET_DST_H */
From: Taehee Yoo ap420073@gmail.com
[ Upstream commit 6b01b1d9b2d38dc84ac398bfe9f00baff06a31e5 ]
GTP RX packet path lookups pdp context with TID. If duplicate TID pdp contexts are existing in the list, it couldn't select correct pdp context. So, TID value should be unique. GTP TX packet path lookups pdp context with ms_addr. If duplicate ms_addr pdp contexts are existing in the list, it couldn't select correct pdp context. So, ms_addr value should be unique.
Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by: Taehee Yoo ap420073@gmail.com Signed-off-by: Jakub Kicinski jakub.kicinski@netronome.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/gtp.c | 32 ++++++++++++++++++++++---------- 1 file changed, 22 insertions(+), 10 deletions(-)
--- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -931,24 +931,31 @@ static void ipv4_pdp_fill(struct pdp_ctx } }
-static int ipv4_pdp_add(struct gtp_dev *gtp, struct sock *sk, - struct genl_info *info) +static int gtp_pdp_add(struct gtp_dev *gtp, struct sock *sk, + struct genl_info *info) { + struct pdp_ctx *pctx, *pctx_tid = NULL; struct net_device *dev = gtp->dev; u32 hash_ms, hash_tid = 0; - struct pdp_ctx *pctx; + unsigned int version; bool found = false; __be32 ms_addr;
ms_addr = nla_get_be32(info->attrs[GTPA_MS_ADDRESS]); hash_ms = ipv4_hashfn(ms_addr) % gtp->hash_size; + version = nla_get_u32(info->attrs[GTPA_VERSION]);
- hlist_for_each_entry_rcu(pctx, >p->addr_hash[hash_ms], hlist_addr) { - if (pctx->ms_addr_ip4.s_addr == ms_addr) { - found = true; - break; - } - } + pctx = ipv4_pdp_find(gtp, ms_addr); + if (pctx) + found = true; + if (version == GTP_V0) + pctx_tid = gtp0_pdp_find(gtp, + nla_get_u64(info->attrs[GTPA_TID])); + else if (version == GTP_V1) + pctx_tid = gtp1_pdp_find(gtp, + nla_get_u32(info->attrs[GTPA_I_TEI])); + if (pctx_tid) + found = true;
if (found) { if (info->nlhdr->nlmsg_flags & NLM_F_EXCL) @@ -956,6 +963,11 @@ static int ipv4_pdp_add(struct gtp_dev * if (info->nlhdr->nlmsg_flags & NLM_F_REPLACE) return -EOPNOTSUPP;
+ if (pctx && pctx_tid) + return -EEXIST; + if (!pctx) + pctx = pctx_tid; + ipv4_pdp_fill(pctx, info);
if (pctx->gtp_version == GTP_V0) @@ -1079,7 +1091,7 @@ static int gtp_genl_new_pdp(struct sk_bu goto out_unlock; }
- err = ipv4_pdp_add(gtp, sk, info); + err = gtp_pdp_add(gtp, sk, info);
out_unlock: rcu_read_unlock();
From: Russell King rmk+kernel@armlinux.org.uk
[ Upstream commit f3f2364ea14d1cf6bf966542f31eadcf178f1577 ]
phylink requires the MAC to report when its link status changes when operating in inband modes. Failure to report link status changes means that phylink has no idea when the link events happen, which results in either the network interface's carrier remaining up or remaining permanently down.
For example, with a fiber module, if the interface is brought up and link is initially established, taking the link down at the far end will cut the optical power. The SFP module's LOS asserts, we deactivate the link, and the network interface reports no carrier.
When the far end is brought back up, the SFP module's LOS deasserts, but the MAC may be slower to establish link. If this happens (which in my tests is a certainty) then phylink never hears that the MAC has established link with the far end, and the network interface is stuck reporting no carrier. This means the interface is non-functional.
Avoiding the link interrupt when we have phylink is basically not an option, so remove the !port->phylink from the test.
Fixes: 4bb043262878 ("net: mvpp2: phylink support") Tested-by: Sven Auhagen sven.auhagen@voleatech.de Tested-by: Antoine Tenart antoine.tenart@bootlin.com Signed-off-by: Russell King rmk+kernel@armlinux.org.uk Signed-off-by: Jakub Kicinski jakub.kicinski@netronome.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -3341,7 +3341,7 @@ static int mvpp2_open(struct net_device valid = true; }
- if (priv->hw_version == MVPP22 && port->link_irq && !port->phylink) { + if (priv->hw_version == MVPP22 && port->link_irq) { err = request_irq(port->link_irq, mvpp2_link_status_isr, 0, dev->name, port); if (err) {
From: Eric Dumazet edumazet@google.com
commit 8dbd76e79a16b45b2ccb01d2f2e08dbf64e71e40 upstream.
Michal Kubecek and Firo Yang did a very nice analysis of crashes happening in __inet_lookup_established().
Since a TCP socket can go from TCP_ESTABLISH to TCP_LISTEN (via a close()/socket()/listen() cycle) without a RCU grace period, I should not have changed listeners linkage in their hash table.
They must use the nulls protocol (Documentation/RCU/rculist_nulls.txt), so that a lookup can detect a socket in a hash list was moved in another one.
Since we added code in commit d296ba60d8e2 ("soreuseport: Resolve merge conflict for v4/v6 ordering fix"), we have to add hlist_nulls_add_tail_rcu() helper.
Fixes: 3b24d854cb35 ("tcp/dccp: do not touch listener sk_refcnt under synflood") Signed-off-by: Eric Dumazet edumazet@google.com Reported-by: Michal Kubecek mkubecek@suse.cz Reported-by: Firo Yang firo.yang@suse.com Reviewed-by: Michal Kubecek mkubecek@suse.cz Link: https://lore.kernel.org/netdev/20191120083919.GH27852@unicorn.suse.cz/ Signed-off-by: Jakub Kicinski jakub.kicinski@netronome.com [stable-4.19: we also need to update code in __inet_lookup_listener() and inet6_lookup_listener() which has been removed in 5.0-rc1.] Signed-off-by: Michal Kubecek mkubecek@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- include/linux/rculist_nulls.h | 37 +++++++++++++++++++++++++++++++++++++ include/net/inet_hashtables.h | 12 +++++++++--- include/net/sock.h | 5 +++++ net/ipv4/inet_diag.c | 3 ++- net/ipv4/inet_hashtables.c | 19 ++++++++++--------- net/ipv4/tcp_ipv4.c | 7 ++++--- net/ipv6/inet6_hashtables.c | 3 ++- 7 files changed, 69 insertions(+), 17 deletions(-)
--- a/include/linux/rculist_nulls.h +++ b/include/linux/rculist_nulls.h @@ -101,6 +101,43 @@ static inline void hlist_nulls_add_head_ }
/** + * hlist_nulls_add_tail_rcu + * @n: the element to add to the hash list. + * @h: the list to add to. + * + * Description: + * Adds the specified element to the specified hlist_nulls, + * while permitting racing traversals. + * + * The caller must take whatever precautions are necessary + * (such as holding appropriate locks) to avoid racing + * with another list-mutation primitive, such as hlist_nulls_add_head_rcu() + * or hlist_nulls_del_rcu(), running on this same list. + * However, it is perfectly legal to run concurrently with + * the _rcu list-traversal primitives, such as + * hlist_nulls_for_each_entry_rcu(), used to prevent memory-consistency + * problems on Alpha CPUs. Regardless of the type of CPU, the + * list-traversal primitive must be guarded by rcu_read_lock(). + */ +static inline void hlist_nulls_add_tail_rcu(struct hlist_nulls_node *n, + struct hlist_nulls_head *h) +{ + struct hlist_nulls_node *i, *last = NULL; + + /* Note: write side code, so rcu accessors are not needed. */ + for (i = h->first; !is_a_nulls(i); i = i->next) + last = i; + + if (last) { + n->next = last->next; + n->pprev = &last->next; + rcu_assign_pointer(hlist_next_rcu(last), n); + } else { + hlist_nulls_add_head_rcu(n, h); + } +} + +/** * hlist_nulls_for_each_entry_rcu - iterate over rcu list of given type * @tpos: the type * to use as a loop cursor. * @pos: the &struct hlist_nulls_node to use as a loop cursor. --- a/include/net/inet_hashtables.h +++ b/include/net/inet_hashtables.h @@ -106,13 +106,19 @@ struct inet_bind_hashbucket { struct hlist_head chain; };
-/* - * Sockets can be hashed in established or listening table +/* Sockets can be hashed in established or listening table. + * We must use different 'nulls' end-of-chain value for all hash buckets : + * A socket might transition from ESTABLISH to LISTEN state without + * RCU grace period. A lookup in ehash table needs to handle this case. */ +#define LISTENING_NULLS_BASE (1U << 29) struct inet_listen_hashbucket { spinlock_t lock; unsigned int count; - struct hlist_head head; + union { + struct hlist_head head; + struct hlist_nulls_head nulls_head; + }; };
/* This is for listening sockets, thus all sockets which possess wildcards. */ --- a/include/net/sock.h +++ b/include/net/sock.h @@ -721,6 +721,11 @@ static inline void __sk_nulls_add_node_r hlist_nulls_add_head_rcu(&sk->sk_nulls_node, list); }
+static inline void __sk_nulls_add_node_tail_rcu(struct sock *sk, struct hlist_nulls_head *list) +{ + hlist_nulls_add_tail_rcu(&sk->sk_nulls_node, list); +} + static inline void sk_nulls_add_node_rcu(struct sock *sk, struct hlist_nulls_head *list) { sock_hold(sk); --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -918,11 +918,12 @@ void inet_diag_dump_icsk(struct inet_has
for (i = s_i; i < INET_LHTABLE_SIZE; i++) { struct inet_listen_hashbucket *ilb; + struct hlist_nulls_node *node;
num = 0; ilb = &hashinfo->listening_hash[i]; spin_lock(&ilb->lock); - sk_for_each(sk, &ilb->head) { + sk_nulls_for_each(sk, node, &ilb->nulls_head) { struct inet_sock *inet = inet_sk(sk);
if (!net_eq(sock_net(sk), net)) --- a/net/ipv4/inet_hashtables.c +++ b/net/ipv4/inet_hashtables.c @@ -308,6 +308,7 @@ struct sock *__inet_lookup_listener(stru bool exact_dif = inet_exact_dif_match(net, skb); struct inet_listen_hashbucket *ilb2; struct sock *sk, *result = NULL; + struct hlist_nulls_node *node; int score, hiscore = 0; unsigned int hash2; u32 phash = 0; @@ -343,7 +344,7 @@ struct sock *__inet_lookup_listener(stru goto done;
port_lookup: - sk_for_each_rcu(sk, &ilb->head) { + sk_nulls_for_each_rcu(sk, node, &ilb->nulls_head) { score = compute_score(sk, net, hnum, daddr, dif, sdif, exact_dif); if (score > hiscore) { @@ -560,10 +561,11 @@ static int inet_reuseport_add_sock(struc struct inet_listen_hashbucket *ilb) { struct inet_bind_bucket *tb = inet_csk(sk)->icsk_bind_hash; + const struct hlist_nulls_node *node; struct sock *sk2; kuid_t uid = sock_i_uid(sk);
- sk_for_each_rcu(sk2, &ilb->head) { + sk_nulls_for_each_rcu(sk2, node, &ilb->nulls_head) { if (sk2 != sk && sk2->sk_family == sk->sk_family && ipv6_only_sock(sk2) == ipv6_only_sock(sk) && @@ -599,9 +601,9 @@ int __inet_hash(struct sock *sk, struct } if (IS_ENABLED(CONFIG_IPV6) && sk->sk_reuseport && sk->sk_family == AF_INET6) - hlist_add_tail_rcu(&sk->sk_node, &ilb->head); + __sk_nulls_add_node_tail_rcu(sk, &ilb->nulls_head); else - hlist_add_head_rcu(&sk->sk_node, &ilb->head); + __sk_nulls_add_node_rcu(sk, &ilb->nulls_head); inet_hash2(hashinfo, sk); ilb->count++; sock_set_flag(sk, SOCK_RCU_FREE); @@ -650,11 +652,9 @@ void inet_unhash(struct sock *sk) reuseport_detach_sock(sk); if (ilb) { inet_unhash2(hashinfo, sk); - __sk_del_node_init(sk); - ilb->count--; - } else { - __sk_nulls_del_node_init_rcu(sk); + ilb->count--; } + __sk_nulls_del_node_init_rcu(sk); sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); unlock: spin_unlock_bh(lock); @@ -790,7 +790,8 @@ void inet_hashinfo_init(struct inet_hash
for (i = 0; i < INET_LHTABLE_SIZE; i++) { spin_lock_init(&h->listening_hash[i].lock); - INIT_HLIST_HEAD(&h->listening_hash[i].head); + INIT_HLIST_NULLS_HEAD(&h->listening_hash[i].nulls_head, + i + LISTENING_NULLS_BASE); h->listening_hash[i].count = 0; }
--- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -2020,13 +2020,14 @@ static void *listening_get_next(struct s struct tcp_iter_state *st = seq->private; struct net *net = seq_file_net(seq); struct inet_listen_hashbucket *ilb; + struct hlist_nulls_node *node; struct sock *sk = cur;
if (!sk) { get_head: ilb = &tcp_hashinfo.listening_hash[st->bucket]; spin_lock(&ilb->lock); - sk = sk_head(&ilb->head); + sk = sk_nulls_head(&ilb->nulls_head); st->offset = 0; goto get_sk; } @@ -2034,9 +2035,9 @@ get_head: ++st->num; ++st->offset;
- sk = sk_next(sk); + sk = sk_nulls_next(sk); get_sk: - sk_for_each_from(sk) { + sk_nulls_for_each_from(sk, node) { if (!net_eq(sock_net(sk), net)) continue; if (sk->sk_family == afinfo->family) --- a/net/ipv6/inet6_hashtables.c +++ b/net/ipv6/inet6_hashtables.c @@ -171,6 +171,7 @@ struct sock *inet6_lookup_listener(struc bool exact_dif = inet6_exact_dif_match(net, skb); struct inet_listen_hashbucket *ilb2; struct sock *sk, *result = NULL; + struct hlist_nulls_node *node; int score, hiscore = 0; unsigned int hash2; u32 phash = 0; @@ -206,7 +207,7 @@ struct sock *inet6_lookup_listener(struc goto done;
port_lookup: - sk_for_each(sk, &ilb->head) { + sk_nulls_for_each(sk, node, &ilb->nulls_head) { score = compute_score(sk, net, hnum, daddr, dif, sdif, exact_dif); if (score > hiscore) { if (sk->sk_reuseport) {
From: Eric Dumazet edumazet@google.com
[ Upstream commit 1f85e6267caca44b30c54711652b0726fadbb131 ]
Backport of commit fdfc5c8594c2 ("tcp: remove empty skb from write queue in error cases") in linux-4.14 stable triggered various bugs. One of them has been fixed in commit ba2ddb43f270 ("tcp: Don't dequeue SYN/FIN-segments from write-queue"), but we still have crashes in some occasions.
Root-cause is that when tcp_sendmsg() has allocated a fresh skb and could not append a fragment before being blocked in sk_stream_wait_memory(), tcp_write_xmit() might be called and decide to send this fresh and empty skb.
Sending an empty packet is not only silly, it might have caused many issues we had in the past with tp->packets_out being out of sync.
Fixes: c65f7f00c587 ("[TCP]: Simplify SKB data portion allocation with NETIF_F_SG.") Signed-off-by: Eric Dumazet edumazet@google.com Cc: Christoph Paasch cpaasch@apple.com Acked-by: Neal Cardwell ncardwell@google.com Cc: Jason Baron jbaron@akamai.com Acked-by: Soheil Hassas Yeganeh soheil@google.com Signed-off-by: Jakub Kicinski jakub.kicinski@netronome.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv4/tcp_output.c | 8 ++++++++ 1 file changed, 8 insertions(+)
--- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -2376,6 +2376,14 @@ static bool tcp_write_xmit(struct sock * if (tcp_small_queue_check(sk, skb, 0)) break;
+ /* Argh, we hit an empty skb(), presumably a thread + * is sleeping in sendmsg()/sk_stream_wait_memory(). + * We do not want to send a pure-ack packet and have + * a strange looking rtx queue with empty packet(s). + */ + if (TCP_SKB_CB(skb)->end_seq == TCP_SKB_CB(skb)->seq) + break; + if (unlikely(tcp_transmit_skb(sk, skb, 1, gfp))) break;
From: Taehee Yoo ap420073@gmail.com
[ Upstream commit 94a6d9fb88df43f92d943c32b84ce398d50bf49f ]
gtp_genl_dump_pdp() is ->dumpit() callback of GTP module and it is used to dump pdp contexts. it would be re-executed because of dump packet size.
If dump packet size is too big, it saves current dump pointer (gtp interface pointer, bucket, TID value) then it restarts dump from last pointer. Current GTP code allows adding zero TID pdp context but dump code ignores zero TID value. So, last dump pointer will not be found.
In addition, this patch adds missing rcu_read_lock() in gtp_genl_dump_pdp().
Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by: Taehee Yoo ap420073@gmail.com Signed-off-by: Jakub Kicinski jakub.kicinski@netronome.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/gtp.c | 36 +++++++++++++++++++----------------- 1 file changed, 19 insertions(+), 17 deletions(-)
--- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -42,7 +42,6 @@ struct pdp_ctx { struct hlist_node hlist_addr;
union { - u64 tid; struct { u64 tid; u16 flow; @@ -1249,43 +1248,46 @@ static int gtp_genl_dump_pdp(struct sk_b struct netlink_callback *cb) { struct gtp_dev *last_gtp = (struct gtp_dev *)cb->args[2], *gtp; + int i, j, bucket = cb->args[0], skip = cb->args[1]; struct net *net = sock_net(skb->sk); - struct gtp_net *gn = net_generic(net, gtp_net_id); - unsigned long tid = cb->args[1]; - int i, k = cb->args[0], ret; struct pdp_ctx *pctx; + struct gtp_net *gn; + + gn = net_generic(net, gtp_net_id);
if (cb->args[4]) return 0;
+ rcu_read_lock(); list_for_each_entry_rcu(gtp, &gn->gtp_dev_list, list) { if (last_gtp && last_gtp != gtp) continue; else last_gtp = NULL;
- for (i = k; i < gtp->hash_size; i++) { - hlist_for_each_entry_rcu(pctx, >p->tid_hash[i], hlist_tid) { - if (tid && tid != pctx->u.tid) - continue; - else - tid = 0; - - ret = gtp_genl_fill_info(skb, - NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - cb->nlh->nlmsg_type, pctx); - if (ret < 0) { + for (i = bucket; i < gtp->hash_size; i++) { + j = 0; + hlist_for_each_entry_rcu(pctx, >p->tid_hash[i], + hlist_tid) { + if (j >= skip && + gtp_genl_fill_info(skb, + NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, + cb->nlh->nlmsg_type, pctx)) { cb->args[0] = i; - cb->args[1] = pctx->u.tid; + cb->args[1] = j; cb->args[2] = (unsigned long)gtp; goto out; } + j++; } + skip = 0; } + bucket = 0; } cb->args[4] = 1; out: + rcu_read_unlock(); return skb->len; }
From: Taehee Yoo ap420073@gmail.com
[ Upstream commit 94dc550a5062030569d4aa76e10e50c8fc001930 ]
ipv4_pdp_find() is called in TX packet path of GTP. ipv4_pdp_find() internally uses gtp->tid_hash to lookup pdp context. In the current code, gtp->tid_hash and gtp->addr_hash are freed by ->dellink(), which is gtp_dellink(). But gtp_dellink() would be called while packets are processing. So, gtp_dellink() should not free gtp->tid_hash and gtp->addr_hash. Instead, dev->priv_destructor() would be used because this callback is called after all packet processing safely.
Test commands: ip link add veth1 type veth peer name veth2 ip a a 172.0.0.1/24 dev veth1 ip link set veth1 up ip a a 172.99.0.1/32 dev lo
gtp-link add gtp1 &
gtp-tunnel add gtp1 v1 200 100 172.99.0.2 172.0.0.2 ip r a 172.99.0.2/32 dev gtp1 ip link set gtp1 mtu 1500
ip netns add ns2 ip link set veth2 netns ns2 ip netns exec ns2 ip a a 172.0.0.2/24 dev veth2 ip netns exec ns2 ip link set veth2 up ip netns exec ns2 ip a a 172.99.0.2/32 dev lo ip netns exec ns2 ip link set lo up
ip netns exec ns2 gtp-link add gtp2 & ip netns exec ns2 gtp-tunnel add gtp2 v1 100 200 172.99.0.1 172.0.0.1 ip netns exec ns2 ip r a 172.99.0.1/32 dev gtp2 ip netns exec ns2 ip link set gtp2 mtu 1500
hping3 172.99.0.2 -2 --flood & ip link del gtp1
Splat looks like: [ 72.568081][ T1195] BUG: KASAN: use-after-free in ipv4_pdp_find.isra.12+0x130/0x170 [gtp] [ 72.568916][ T1195] Read of size 8 at addr ffff8880b9a35d28 by task hping3/1195 [ 72.569631][ T1195] [ 72.569861][ T1195] CPU: 2 PID: 1195 Comm: hping3 Not tainted 5.5.0-rc1 #199 [ 72.570547][ T1195] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 72.571438][ T1195] Call Trace: [ 72.571764][ T1195] dump_stack+0x96/0xdb [ 72.572171][ T1195] ? ipv4_pdp_find.isra.12+0x130/0x170 [gtp] [ 72.572761][ T1195] print_address_description.constprop.5+0x1be/0x360 [ 72.573400][ T1195] ? ipv4_pdp_find.isra.12+0x130/0x170 [gtp] [ 72.573971][ T1195] ? ipv4_pdp_find.isra.12+0x130/0x170 [gtp] [ 72.574544][ T1195] __kasan_report+0x12a/0x16f [ 72.575014][ T1195] ? ipv4_pdp_find.isra.12+0x130/0x170 [gtp] [ 72.575593][ T1195] kasan_report+0xe/0x20 [ 72.576004][ T1195] ipv4_pdp_find.isra.12+0x130/0x170 [gtp] [ 72.576577][ T1195] gtp_build_skb_ip4+0x199/0x1420 [gtp] [ ... ] [ 72.647671][ T1195] BUG: unable to handle page fault for address: ffff8880b9a35d28 [ 72.648512][ T1195] #PF: supervisor read access in kernel mode [ 72.649158][ T1195] #PF: error_code(0x0000) - not-present page [ 72.649849][ T1195] PGD a6c01067 P4D a6c01067 PUD 11fb07067 PMD 11f939067 PTE 800fffff465ca060 [ 72.652958][ T1195] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI [ 72.653834][ T1195] CPU: 2 PID: 1195 Comm: hping3 Tainted: G B 5.5.0-rc1 #199 [ 72.668062][ T1195] RIP: 0010:ipv4_pdp_find.isra.12+0x86/0x170 [gtp] [ ... ] [ 72.679168][ T1195] Call Trace: [ 72.679603][ T1195] gtp_build_skb_ip4+0x199/0x1420 [gtp] [ 72.681915][ T1195] ? ipv4_pdp_find.isra.12+0x170/0x170 [gtp] [ 72.682513][ T1195] ? lock_acquire+0x164/0x3b0 [ 72.682966][ T1195] ? gtp_dev_xmit+0x35e/0x890 [gtp] [ 72.683481][ T1195] gtp_dev_xmit+0x3c2/0x890 [gtp] [ ... ]
Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by: Taehee Yoo ap420073@gmail.com Signed-off-by: Jakub Kicinski jakub.kicinski@netronome.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/gtp.c | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-)
--- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -644,9 +644,16 @@ static void gtp_link_setup(struct net_de }
static int gtp_hashtable_new(struct gtp_dev *gtp, int hsize); -static void gtp_hashtable_free(struct gtp_dev *gtp); static int gtp_encap_enable(struct gtp_dev *gtp, struct nlattr *data[]);
+static void gtp_destructor(struct net_device *dev) +{ + struct gtp_dev *gtp = netdev_priv(dev); + + kfree(gtp->addr_hash); + kfree(gtp->tid_hash); +} + static int gtp_newlink(struct net *src_net, struct net_device *dev, struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) @@ -681,13 +688,15 @@ static int gtp_newlink(struct net *src_n
gn = net_generic(dev_net(dev), gtp_net_id); list_add_rcu(>p->list, &gn->gtp_dev_list); + dev->priv_destructor = gtp_destructor;
netdev_dbg(dev, "registered new GTP interface\n");
return 0;
out_hashtable: - gtp_hashtable_free(gtp); + kfree(gtp->addr_hash); + kfree(gtp->tid_hash); out_encap: gtp_encap_disable(gtp); return err; @@ -696,9 +705,14 @@ out_encap: static void gtp_dellink(struct net_device *dev, struct list_head *head) { struct gtp_dev *gtp = netdev_priv(dev); + struct pdp_ctx *pctx; + int i; + + for (i = 0; i < gtp->hash_size; i++) + hlist_for_each_entry_rcu(pctx, >p->tid_hash[i], hlist_tid) + pdp_context_delete(pctx);
gtp_encap_disable(gtp); - gtp_hashtable_free(gtp); list_del_rcu(>p->list); unregister_netdevice_queue(dev, head); } @@ -776,20 +790,6 @@ err1: return -ENOMEM; }
-static void gtp_hashtable_free(struct gtp_dev *gtp) -{ - struct pdp_ctx *pctx; - int i; - - for (i = 0; i < gtp->hash_size; i++) - hlist_for_each_entry_rcu(pctx, >p->tid_hash[i], hlist_tid) - pdp_context_delete(pctx); - - synchronize_rcu(); - kfree(gtp->addr_hash); - kfree(gtp->tid_hash); -} - static struct sock *gtp_encap_enable_socket(int fd, int type, struct gtp_dev *gtp) {
From: Taehee Yoo ap420073@gmail.com
[ Upstream commit 6a902c0f31993ab02e1b6ea7085002b9c9083b6a ]
GTP default hashtable size is 1024 and userspace could set specific hashtable size with IFLA_GTP_PDP_HASHSIZE. If hashtable size is set to 0 from userspace, hashtable will not work and panic will occur.
Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by: Taehee Yoo ap420073@gmail.com Signed-off-by: Jakub Kicinski jakub.kicinski@netronome.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/gtp.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -671,10 +671,13 @@ static int gtp_newlink(struct net *src_n if (err < 0) return err;
- if (!data[IFLA_GTP_PDP_HASHSIZE]) + if (!data[IFLA_GTP_PDP_HASHSIZE]) { hashsize = 1024; - else + } else { hashsize = nla_get_u32(data[IFLA_GTP_PDP_HASHSIZE]); + if (!hashsize) + hashsize = 1024; + }
err = gtp_hashtable_new(gtp, hashsize); if (err < 0)
From: Christophe Leroy christophe.leroy@c-s.fr
[ Upstream commit 3194d2533efffae8b815d84729ecc58b6a9000ab ]
With lastest kernel, the following warning is observed at startup:
[ 1.500609] ------------[ cut here ]------------ [ 1.505225] remove_proc_entry: removing non-empty directory 'irq/22', leaking at least 'fsl_spi' [ 1.514234] WARNING: CPU: 0 PID: 1 at fs/proc/generic.c:682 remove_proc_entry+0x198/0x1c0 [ 1.522403] CPU: 0 PID: 1 Comm: swapper Not tainted 5.4.0-s3k-dev-02248-g93532430a4ff #2564 [ 1.530724] NIP: c0197694 LR: c0197694 CTR: c0050d80 [ 1.535762] REGS: df4a5af0 TRAP: 0700 Not tainted (5.4.0-02248-g93532430a4ff) [ 1.543818] MSR: 00029032 <EE,ME,IR,DR,RI> CR: 22028222 XER: 00000000 [ 1.550524] [ 1.550524] GPR00: c0197694 df4a5ba8 df4a0000 00000054 00000000 00000000 00004a38 00000010 [ 1.550524] GPR08: c07c5a30 00000800 00000000 00001032 22000208 00000000 c0004b14 00000000 [ 1.550524] GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 c0830000 c07fc078 [ 1.550524] GPR24: c08e8ca0 df665d10 df60ea98 c07c9db8 00000001 df5d5ae3 df5d5a80 df43f8e3 [ 1.585327] NIP [c0197694] remove_proc_entry+0x198/0x1c0 [ 1.590628] LR [c0197694] remove_proc_entry+0x198/0x1c0 [ 1.595829] Call Trace: [ 1.598280] [df4a5ba8] [c0197694] remove_proc_entry+0x198/0x1c0 (unreliable) [ 1.605321] [df4a5bd8] [c0067acc] unregister_irq_proc+0x5c/0x70 [ 1.611238] [df4a5bf8] [c005fbc4] free_desc+0x3c/0x80 [ 1.616286] [df4a5c18] [c005fe2c] irq_free_descs+0x70/0xa8 [ 1.621778] [df4a5c38] [c033d3fc] of_fsl_spi_probe+0xdc/0x3cc [ 1.627525] [df4a5c88] [c02f0f64] platform_drv_probe+0x44/0xa4 [ 1.633350] [df4a5c98] [c02eee44] really_probe+0x1ac/0x418 [ 1.638829] [df4a5cc8] [c02ed3e8] bus_for_each_drv+0x64/0xb0 [ 1.644481] [df4a5cf8] [c02ef950] __device_attach+0xd4/0x128 [ 1.650132] [df4a5d28] [c02ed61c] bus_probe_device+0xa0/0xbc [ 1.655783] [df4a5d48] [c02ebbe8] device_add+0x544/0x74c [ 1.661096] [df4a5d88] [c0382b78] of_platform_device_create_pdata+0xa4/0x100 [ 1.668131] [df4a5da8] [c0382cf4] of_platform_bus_create+0x120/0x20c [ 1.674474] [df4a5df8] [c0382d50] of_platform_bus_create+0x17c/0x20c [ 1.680818] [df4a5e48] [c0382e88] of_platform_bus_probe+0x9c/0xf0 [ 1.686907] [df4a5e68] [c0751404] __machine_initcall_cmpcpro_cmpcpro_declare_of_platform_devices+0x74/0x1a4 [ 1.696629] [df4a5e98] [c072a4cc] do_one_initcall+0x8c/0x1d4 [ 1.702282] [df4a5ef8] [c072a768] kernel_init_freeable+0x154/0x204 [ 1.708455] [df4a5f28] [c0004b2c] kernel_init+0x18/0x110 [ 1.713769] [df4a5f38] [c00122ac] ret_from_kernel_thread+0x14/0x1c [ 1.719926] Instruction dump: [ 1.722889] 2c030000 4182004c 3863ffb0 3c80c05f 80e3005c 388436a0 3c60c06d 7fa6eb78 [ 1.730630] 7fe5fb78 38840280 38634178 4be8c611 <0fe00000> 4bffff6c 3c60c071 7fe4fb78 [ 1.738556] ---[ end trace 05d0720bf2e352e2 ]---
The problem comes from the error path which calls irq_dispose_mapping() while the IRQ has been requested with devm_request_irq().
IRQ doesn't need to be mapped with irq_of_parse_and_map(). The only need is to get the IRQ virtual number. For that, use of_irq_to_resource() instead of the irq_of_parse_and_map()/irq_dispose_mapping() pair.
Fixes: 500a32abaf81 ("spi: fsl: Call irq_dispose_mapping in err path") Cc: stable@vger.kernel.org Signed-off-by: Christophe Leroy christophe.leroy@c-s.fr Link: https://lore.kernel.org/r/518cfb83347d5372748e7fe72f94e2e9443d0d4a.157590512... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/spi/spi-fsl-spi.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c index 8f2e97857e8b..fb34ba3f2b23 100644 --- a/drivers/spi/spi-fsl-spi.c +++ b/drivers/spi/spi-fsl-spi.c @@ -832,8 +832,8 @@ static int of_fsl_spi_probe(struct platform_device *ofdev) if (ret) goto err;
- irq = irq_of_parse_and_map(np, 0); - if (!irq) { + irq = of_irq_to_resource(np, 0, NULL); + if (irq <= 0) { ret = -EINVAL; goto err; } @@ -847,7 +847,6 @@ static int of_fsl_spi_probe(struct platform_device *ofdev) return 0;
err: - irq_dispose_mapping(irq); if (type == TYPE_FSL) of_fsl_spi_free_chipselects(dev); return ret;
From: David Engraf david.engraf@sysgo.com
[ Upstream commit cb47b9f8630ae3fa3f5fbd0c7003faba7abdf711 ]
Use MCK_DIV8 when the clock divider is > 65535. Unfortunately the mode register was already written thus the clock selection is ignored.
Fix by doing the baud rate calulation before setting the mode.
Fixes: 5bf5635ac170 ("tty/serial: atmel: add fractional baud rate support") Signed-off-by: David Engraf david.engraf@sysgo.com Acked-by: Ludovic Desroches ludovic.desroches@microchip.com Acked-by: Richard Genoud richard.genoud@gmail.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20191216085403.17050-1-david.engraf@sysgo.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/tty/serial/atmel_serial.c | 43 ++++++++++++++++--------------- 1 file changed, 22 insertions(+), 21 deletions(-)
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index dd8949e8fcd7..f34520e9ad6e 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -2154,27 +2154,6 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, mode |= ATMEL_US_USMODE_NORMAL; }
- /* set the mode, clock divisor, parity, stop bits and data size */ - atmel_uart_writel(port, ATMEL_US_MR, mode); - - /* - * when switching the mode, set the RTS line state according to the - * new mode, otherwise keep the former state - */ - if ((old_mode & ATMEL_US_USMODE) != (mode & ATMEL_US_USMODE)) { - unsigned int rts_state; - - if ((mode & ATMEL_US_USMODE) == ATMEL_US_USMODE_HWHS) { - /* let the hardware control the RTS line */ - rts_state = ATMEL_US_RTSDIS; - } else { - /* force RTS line to low level */ - rts_state = ATMEL_US_RTSEN; - } - - atmel_uart_writel(port, ATMEL_US_CR, rts_state); - } - /* * Set the baud rate: * Fractional baudrate allows to setup output frequency more @@ -2200,6 +2179,28 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, quot = cd | fp << ATMEL_US_FP_OFFSET;
atmel_uart_writel(port, ATMEL_US_BRGR, quot); + + /* set the mode, clock divisor, parity, stop bits and data size */ + atmel_uart_writel(port, ATMEL_US_MR, mode); + + /* + * when switching the mode, set the RTS line state according to the + * new mode, otherwise keep the former state + */ + if ((old_mode & ATMEL_US_USMODE) != (mode & ATMEL_US_USMODE)) { + unsigned int rts_state; + + if ((mode & ATMEL_US_USMODE) == ATMEL_US_USMODE_HWHS) { + /* let the hardware control the RTS line */ + rts_state = ATMEL_US_RTSDIS; + } else { + /* force RTS line to low level */ + rts_state = ATMEL_US_RTSEN; + } + + atmel_uart_writel(port, ATMEL_US_CR, rts_state); + } + atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); atmel_port->tx_stopped = false;
From: Hans de Goede hdegoede@redhat.com
[ Upstream commit 40ecab551232972a39cdd8b6f17ede54a3fdb296 ]
Commit 39ce8150a079 ("pinctrl: baytrail: Serialize all register access") added a spinlock around all register accesses because:
"There is a hardware issue in Intel Baytrail where concurrent GPIO register access might result reads of 0xffffffff and writes might get dropped completely."
Testing has shown that this does not catch all cases, there are still 2 problems remaining
1) The original fix uses a spinlock per byt_gpio device / struct, additional testing has shown that this is not sufficient concurent accesses to 2 different GPIO banks also suffer from the same problem.
This commit fixes this by moving to a single global lock.
2) The original fix did not add a lock around the register accesses in the suspend/resume handling.
Since pinctrl-baytrail.c is using normal suspend/resume handlers, interrupts are still enabled during suspend/resume handling. Nothing should be using the GPIOs when they are being taken down, _but_ the GPIOs themselves may still cause interrupts, which are likely to use (read) the triggering GPIO. So we need to protect against concurrent GPIO register accesses in the suspend/resume handlers too.
This commit fixes this by adding the missing spin_lock / unlock calls.
The 2 fixes together fix the Acer Switch 10 SW5-012 getting completely confused after a suspend resume. The DSDT for this device has a bug in its _LID method which reprograms the home and power button trigger- flags requesting both high and low _level_ interrupts so the IRQs for these 2 GPIOs continuously fire. This combined with the saving of registers during suspend, triggers concurrent GPIO register accesses resulting in saving 0xffffffff as pconf0 value during suspend and then when restoring this on resume the pinmux settings get all messed up, resulting in various I2C busses being stuck, the wifi no longer working and often the tablet simply not coming out of suspend at all.
Cc: stable@vger.kernel.org Fixes: 39ce8150a079 ("pinctrl: baytrail: Serialize all register access") Signed-off-by: Hans de Goede hdegoede@redhat.com Acked-by: Mika Westerberg mika.westerberg@linux.intel.com Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/intel/pinctrl-baytrail.c | 81 +++++++++++++----------- 1 file changed, 44 insertions(+), 37 deletions(-)
diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c index f38d596efa05..021e28ff1194 100644 --- a/drivers/pinctrl/intel/pinctrl-baytrail.c +++ b/drivers/pinctrl/intel/pinctrl-baytrail.c @@ -196,7 +196,6 @@ struct byt_gpio { struct platform_device *pdev; struct pinctrl_dev *pctl_dev; struct pinctrl_desc pctl_desc; - raw_spinlock_t lock; const struct byt_pinctrl_soc_data *soc_data; struct byt_community *communities_copy; struct byt_gpio_pin_context *saved_context; @@ -707,6 +706,8 @@ static const struct byt_pinctrl_soc_data *byt_soc_data[] = { NULL, };
+static DEFINE_RAW_SPINLOCK(byt_lock); + static struct byt_community *byt_get_community(struct byt_gpio *vg, unsigned int pin) { @@ -848,7 +849,7 @@ static void byt_set_group_simple_mux(struct byt_gpio *vg, unsigned long flags; int i;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags);
for (i = 0; i < group.npins; i++) { void __iomem *padcfg0; @@ -868,7 +869,7 @@ static void byt_set_group_simple_mux(struct byt_gpio *vg, writel(value, padcfg0); }
- raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); }
static void byt_set_group_mixed_mux(struct byt_gpio *vg, @@ -878,7 +879,7 @@ static void byt_set_group_mixed_mux(struct byt_gpio *vg, unsigned long flags; int i;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags);
for (i = 0; i < group.npins; i++) { void __iomem *padcfg0; @@ -898,7 +899,7 @@ static void byt_set_group_mixed_mux(struct byt_gpio *vg, writel(value, padcfg0); }
- raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); }
static int byt_set_mux(struct pinctrl_dev *pctldev, unsigned int func_selector, @@ -947,11 +948,11 @@ static void byt_gpio_clear_triggering(struct byt_gpio *vg, unsigned int offset) unsigned long flags; u32 value;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); value = readl(reg); value &= ~(BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL); writel(value, reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); }
static int byt_gpio_request_enable(struct pinctrl_dev *pctl_dev, @@ -963,7 +964,7 @@ static int byt_gpio_request_enable(struct pinctrl_dev *pctl_dev, u32 value, gpio_mux; unsigned long flags;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags);
/* * In most cases, func pin mux 000 means GPIO function. @@ -985,7 +986,7 @@ static int byt_gpio_request_enable(struct pinctrl_dev *pctl_dev, "pin %u forcibly re-configured as GPIO\n", offset); }
- raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags);
pm_runtime_get(&vg->pdev->dev);
@@ -1013,7 +1014,7 @@ static int byt_gpio_set_direction(struct pinctrl_dev *pctl_dev, unsigned long flags; u32 value;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags);
value = readl(val_reg); value &= ~BYT_DIR_MASK; @@ -1030,7 +1031,7 @@ static int byt_gpio_set_direction(struct pinctrl_dev *pctl_dev, "Potential Error: Setting GPIO with direct_irq_en to output"); writel(value, val_reg);
- raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags);
return 0; } @@ -1099,11 +1100,11 @@ static int byt_pin_config_get(struct pinctrl_dev *pctl_dev, unsigned int offset, u32 conf, pull, val, debounce; u16 arg = 0;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); conf = readl(conf_reg); pull = conf & BYT_PULL_ASSIGN_MASK; val = readl(val_reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags);
switch (param) { case PIN_CONFIG_BIAS_DISABLE: @@ -1130,9 +1131,9 @@ static int byt_pin_config_get(struct pinctrl_dev *pctl_dev, unsigned int offset, if (!(conf & BYT_DEBOUNCE_EN)) return -EINVAL;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); debounce = readl(db_reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags);
switch (debounce & BYT_DEBOUNCE_PULSE_MASK) { case BYT_DEBOUNCE_PULSE_375US: @@ -1184,7 +1185,7 @@ static int byt_pin_config_set(struct pinctrl_dev *pctl_dev, u32 conf, val, debounce; int i, ret = 0;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags);
conf = readl(conf_reg); val = readl(val_reg); @@ -1292,7 +1293,7 @@ static int byt_pin_config_set(struct pinctrl_dev *pctl_dev, if (!ret) writel(conf, conf_reg);
- raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags);
return ret; } @@ -1317,9 +1318,9 @@ static int byt_gpio_get(struct gpio_chip *chip, unsigned offset) unsigned long flags; u32 val;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); val = readl(reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags);
return !!(val & BYT_LEVEL); } @@ -1334,13 +1335,13 @@ static void byt_gpio_set(struct gpio_chip *chip, unsigned offset, int value) if (!reg) return;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); old_val = readl(reg); if (value) writel(old_val | BYT_LEVEL, reg); else writel(old_val & ~BYT_LEVEL, reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); }
static int byt_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) @@ -1353,9 +1354,9 @@ static int byt_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) if (!reg) return -EINVAL;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); value = readl(reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags);
if (!(value & BYT_OUTPUT_EN)) return GPIOF_DIR_OUT; @@ -1398,14 +1399,14 @@ static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) const char *label; unsigned int pin;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); pin = vg->soc_data->pins[i].number; reg = byt_gpio_reg(vg, pin, BYT_CONF0_REG); if (!reg) { seq_printf(s, "Could not retrieve pin %i conf0 reg\n", pin); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); continue; } conf0 = readl(reg); @@ -1414,11 +1415,11 @@ static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) if (!reg) { seq_printf(s, "Could not retrieve pin %i val reg\n", pin); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); continue; } val = readl(reg); - raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags);
comm = byt_get_community(vg, pin); if (!comm) { @@ -1502,9 +1503,9 @@ static void byt_irq_ack(struct irq_data *d) if (!reg) return;
- raw_spin_lock(&vg->lock); + raw_spin_lock(&byt_lock); writel(BIT(offset % 32), reg); - raw_spin_unlock(&vg->lock); + raw_spin_unlock(&byt_lock); }
static void byt_irq_mask(struct irq_data *d) @@ -1528,7 +1529,7 @@ static void byt_irq_unmask(struct irq_data *d) if (!reg) return;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); value = readl(reg);
switch (irqd_get_trigger_type(d)) { @@ -1551,7 +1552,7 @@ static void byt_irq_unmask(struct irq_data *d)
writel(value, reg);
- raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags); }
static int byt_irq_type(struct irq_data *d, unsigned int type) @@ -1565,7 +1566,7 @@ static int byt_irq_type(struct irq_data *d, unsigned int type) if (!reg || offset >= vg->chip.ngpio) return -EINVAL;
- raw_spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&byt_lock, flags); value = readl(reg);
WARN(value & BYT_DIRECT_IRQ_EN, @@ -1587,7 +1588,7 @@ static int byt_irq_type(struct irq_data *d, unsigned int type) else if (type & IRQ_TYPE_LEVEL_MASK) irq_set_handler_locked(d, handle_level_irq);
- raw_spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&byt_lock, flags);
return 0; } @@ -1623,9 +1624,9 @@ static void byt_gpio_irq_handler(struct irq_desc *desc) continue; }
- raw_spin_lock(&vg->lock); + raw_spin_lock(&byt_lock); pending = readl(reg); - raw_spin_unlock(&vg->lock); + raw_spin_unlock(&byt_lock); for_each_set_bit(pin, &pending, 32) { virq = irq_find_mapping(vg->chip.irq.domain, base + pin); generic_handle_irq(virq); @@ -1828,8 +1829,6 @@ static int byt_pinctrl_probe(struct platform_device *pdev) return PTR_ERR(vg->pctl_dev); }
- raw_spin_lock_init(&vg->lock); - ret = byt_gpio_probe(vg); if (ret) return ret; @@ -1845,8 +1844,11 @@ static int byt_gpio_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct byt_gpio *vg = platform_get_drvdata(pdev); + unsigned long flags; int i;
+ raw_spin_lock_irqsave(&byt_lock, flags); + for (i = 0; i < vg->soc_data->npins; i++) { void __iomem *reg; u32 value; @@ -1867,6 +1869,7 @@ static int byt_gpio_suspend(struct device *dev) vg->saved_context[i].val = value; }
+ raw_spin_unlock_irqrestore(&byt_lock, flags); return 0; }
@@ -1874,8 +1877,11 @@ static int byt_gpio_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct byt_gpio *vg = platform_get_drvdata(pdev); + unsigned long flags; int i;
+ raw_spin_lock_irqsave(&byt_lock, flags); + for (i = 0; i < vg->soc_data->npins; i++) { void __iomem *reg; u32 value; @@ -1913,6 +1919,7 @@ static int byt_gpio_resume(struct device *dev) } }
+ raw_spin_unlock_irqrestore(&byt_lock, flags); return 0; } #endif
On 1/2/20 2:06 PM, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 4.19.93 release. There are 114 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.
Responses should be made by Sat, 04 Jan 2020 21:58:48 +0000. Anything received after that time might be too late.
Build results: total: 156 pass: 155 fail: 1 Failed builds: sparc64:allmodconfig Qemu test results: total: 381 pass: 381 fail: 0
ERROR: "of_irq_to_resource" [drivers/spi/spi-fsl-spi.ko] undefined!
Caused by 3194d2533eff ("spi: fsl: don't map irq during probe") which is missing its fix, 63aa6a692595 ("spi: fsl: use platform_get_irq() instead of of_irq_to_resource()")
Guenter
On Fri, Jan 03, 2020 at 06:27:53AM -0800, Guenter Roeck wrote:
On 1/2/20 2:06 PM, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 4.19.93 release. There are 114 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.
Responses should be made by Sat, 04 Jan 2020 21:58:48 +0000. Anything received after that time might be too late.
Build results: total: 156 pass: 155 fail: 1 Failed builds: sparc64:allmodconfig Qemu test results: total: 381 pass: 381 fail: 0
ERROR: "of_irq_to_resource" [drivers/spi/spi-fsl-spi.ko] undefined!
Caused by 3194d2533eff ("spi: fsl: don't map irq during probe") which is missing its fix, 63aa6a692595 ("spi: fsl: use platform_get_irq() instead of of_irq_to_resource()")
Now added to 4.14 and 4.19 queues, thanks!
greg k-h
On Fri, Jan 03, 2020 at 04:41:56PM +0100, Greg Kroah-Hartman wrote:
On Fri, Jan 03, 2020 at 06:27:53AM -0800, Guenter Roeck wrote:
On 1/2/20 2:06 PM, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 4.19.93 release. There are 114 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.
Responses should be made by Sat, 04 Jan 2020 21:58:48 +0000. Anything received after that time might be too late.
Build results: total: 156 pass: 155 fail: 1 Failed builds: sparc64:allmodconfig Qemu test results: total: 381 pass: 381 fail: 0
ERROR: "of_irq_to_resource" [drivers/spi/spi-fsl-spi.ko] undefined!
Caused by 3194d2533eff ("spi: fsl: don't map irq during probe") which is missing its fix, 63aa6a692595 ("spi: fsl: use platform_get_irq() instead of of_irq_to_resource()")
Now added to 4.14 and 4.19 queues, thanks!
sparc64:allmodconfig builds now pass in both v4.14.y and v4.19.y queues.
Guenter
On Fri, Jan 03, 2020 at 09:46:24AM -0800, Guenter Roeck wrote:
On Fri, Jan 03, 2020 at 04:41:56PM +0100, Greg Kroah-Hartman wrote:
On Fri, Jan 03, 2020 at 06:27:53AM -0800, Guenter Roeck wrote:
On 1/2/20 2:06 PM, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 4.19.93 release. There are 114 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.
Responses should be made by Sat, 04 Jan 2020 21:58:48 +0000. Anything received after that time might be too late.
Build results: total: 156 pass: 155 fail: 1 Failed builds: sparc64:allmodconfig Qemu test results: total: 381 pass: 381 fail: 0
ERROR: "of_irq_to_resource" [drivers/spi/spi-fsl-spi.ko] undefined!
Caused by 3194d2533eff ("spi: fsl: don't map irq during probe") which is missing its fix, 63aa6a692595 ("spi: fsl: use platform_get_irq() instead of of_irq_to_resource()")
Now added to 4.14 and 4.19 queues, thanks!
sparc64:allmodconfig builds now pass in both v4.14.y and v4.19.y queues.
Wonderful, thanks for letting me know and running all of these builds/tests.
greg k-h
On Fri, 3 Jan 2020 at 21:12, Greg Kroah-Hartman gregkh@linuxfoundation.org wrote:
Now added to 4.14 and 4.19 queues, thanks!
Results from Linaro’s test farm. No regressions on arm64, arm, x86_64, and i386.
Summary ------------------------------------------------------------------------
kernel: 4.19.93-rc3 git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git branch: linux-4.19.y git commit: 9ecb5b1714ae62e5f10cc711b473d902b465735d git describe: v4.19.92-115-g9ecb5b1714ae Test details: https://qa-reports.linaro.org/lkft/linux-stable-rc-4.19-oe/build/v4.19.92-11...
No regressions (compared to build v4.19.92)
No fixes (compared to build v4.19.92)
Ran 24071 total tests in the following environments and test suites.
Environments -------------- - dragonboard-410c - arm64 - hi6220-hikey - arm64 - i386 - juno-r2 - arm64 - qemu_arm - qemu_arm64 - qemu_i386 - qemu_x86_64 - x15 - arm - x86_64
Test Suites ----------- * build * install-android-platform-tools-r2600 * kselftest * linux-log-parser * ltp-cap_bounds-tests * ltp-commands-tests * ltp-cpuhotplug-tests * ltp-cve-tests * ltp-dio-tests * ltp-fcntl-locktests-tests * ltp-filecaps-tests * ltp-fs_bind-tests * ltp-fs_perms_simple-tests * ltp-fsx-tests * ltp-hugetlb-tests * ltp-io-tests * ltp-ipc-tests * ltp-math-tests * ltp-mm-tests * ltp-nptl-tests * ltp-pty-tests * ltp-sched-tests * ltp-securebits-tests * ltp-syscalls-tests * perf * spectre-meltdown-checker-test * v4l2-compliance * libhugetlbfs * ltp-containers-tests * ltp-fs-tests * network-basic-tests * ltp-open-posix-tests * kvm-unit-tests * ssuite * kselftest-vsyscall-mode-native * kselftest-vsyscall-mode-none
On 02/01/2020 22:06, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 4.19.93 release. There are 114 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.
Responses should be made by Sat, 04 Jan 2020 21:58:48 +0000. Anything received after that time might be too late.
The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.19.93-rc1... or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y and the diffstat can be found below.
thanks,
greg k-h
All tests are passing for Tegra ...
Test results for stable-v4.19: 13 builds: 13 pass, 0 fail 22 boots: 22 pass, 0 fail 32 tests: 32 pass, 0 fail
Linux version: 4.19.93-rc2-g6a2e2a4c865f Boards tested: tegra124-jetson-tk1, tegra186-p2771-0000, tegra194-p2972-0000, tegra20-ventana, tegra210-p2371-2180, tegra30-cardhu-a04
Cheers Jon
On 1/2/20 3:06 PM, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 4.19.93 release. There are 114 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.
Responses should be made by Sat, 04 Jan 2020 21:58:48 +0000. Anything received after that time might be too late.
The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.19.93-rc1... or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y and the diffstat can be found below.
thanks,
greg k-h
Compiled and booted on my test system. No dmesg regressions.
thanks, -- Shuah
linux-stable-mirror@lists.linaro.org