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[PATCH net v2 1/3] bus: fsl-mc: Fix potential double device reference in fsl_mc_get_endpoint()

by Ma Ke

The fsl_mc_get_endpoint() function may call fsl_mc_device_lookup() twice, which would increment the device's reference count twice if both lookups find a device. This could lead to a reference count leak. Found by code review. Cc: stable(a)vger.kernel.org Fixes: 1ac210d128ef ("bus: fsl-mc: add the fsl_mc_get_endpoint function") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- drivers/bus/fsl-mc/fsl-mc-bus.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index 7671bd158545..c1c0a4759c7e 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -943,6 +943,7 @@ struct fsl_mc_device *fsl_mc_get_endpoint(struct fsl_mc_device *mc_dev, struct fsl_mc_obj_desc endpoint_desc = {{ 0 }}; struct dprc_endpoint endpoint1 = {{ 0 }}; struct dprc_endpoint endpoint2 = {{ 0 }}; + struct fsl_mc_bus *mc_bus; int state, err; mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent); @@ -966,6 +967,8 @@ struct fsl_mc_device *fsl_mc_get_endpoint(struct fsl_mc_device *mc_dev, strcpy(endpoint_desc.type, endpoint2.type); endpoint_desc.id = endpoint2.id; endpoint = fsl_mc_device_lookup(&endpoint_desc, mc_bus_dev); + if (endpoint) + return endpoint; /* * We know that the device has an endpoint because we verified by @@ -973,17 +976,13 @@ struct fsl_mc_device *fsl_mc_get_endpoint(struct fsl_mc_device *mc_dev, * yet discovered by the fsl-mc bus, thus the lookup returned NULL. * Force a rescan of the devices in this container and retry the lookup. */ - if (!endpoint) { - struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev); - - if (mutex_trylock(&mc_bus->scan_mutex)) { - err = dprc_scan_objects(mc_bus_dev, true); - mutex_unlock(&mc_bus->scan_mutex); - } - - if (err < 0) - return ERR_PTR(err); + mc_bus = to_fsl_mc_bus(mc_bus_dev); + if (mutex_trylock(&mc_bus->scan_mutex)) { + err = dprc_scan_objects(mc_bus_dev, true); + mutex_unlock(&mc_bus->scan_mutex); } + if (err < 0) + return ERR_PTR(err); endpoint = fsl_mc_device_lookup(&endpoint_desc, mc_bus_dev); /* -- 2.25.1

4 months

4
9
0 0

[PATCH 0/2] Fix undetected overflow when allocating IOVA

by Jason Gunthorpe

Syzkaller found this, the ALIGN() call can overflow and corrupt the allocation process. Fix the bug and add some test coverage. Signed-off-by: Jason Gunthorpe <jgg(a)nvidia.com> Jason Gunthorpe (2): iommufd: Prevent ALIGN() overflow iommufd/selftest: Test reserved regions near ULONG_MAX drivers/iommu/iommufd/io_pagetable.c | 41 +++++++++++++++---------- tools/testing/selftests/iommu/iommufd.c | 18 +++++++++++ 2 files changed, 43 insertions(+), 16 deletions(-) base-commit: 601b1d0d9395c711383452bd0d47037afbbb4bcf -- 2.43.0

4 months

5
14
0 0

[PATCH 3/3] ntfs: Do not overwrite uptodate pages

by Matthew Wilcox (Oracle)

When reading a compressed file, we may read several pages in addition to the one requested. The current code will overwrite pages in the page cache with the data from disc which can definitely result in changes that have been made being lost. For example if we have four consecutie pages ABCD in the file compressed into a single extent, on first access, we'll bring in ABCD. Then we write to page B. Memory pressure results in the eviction of ACD. When we attempt to write to page C, we will overwrite the data in page B with the data currently on disk. I haven't investigated the decompression code to check whether it's OK to overwrite a clean page or whether it might be possible to see corrupt data. Out of an abundance of caution, decline to overwrite uptodate pages, not just dirty pages. Fixes: 4342306f0f0d (fs/ntfs3: Add file operations and implementation) Signed-off-by: Matthew Wilcox (Oracle) <willy(a)infradead.org> Cc: stable(a)vger.kernel.org --- fs/ntfs3/frecord.c | 35 +++++++++++++++++++++++++++++------ 1 file changed, 29 insertions(+), 6 deletions(-) diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c index 6fc7b2281fed..c3ce9cf4441e 100644 --- a/fs/ntfs3/frecord.c +++ b/fs/ntfs3/frecord.c @@ -2020,6 +2020,29 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, return err; } +static struct page *ntfs_lock_new_page(struct address_space *mapping, + pgoff_t index, gfp_t gfp) +{ + struct folio *folio = __filemap_get_folio(mapping, index, + FGP_LOCK | FGP_ACCESSED | FGP_CREAT, gfp); + struct page *page; + + if (IS_ERR(folio)) + return ERR_CAST(folio); + + if (!folio_test_uptodate(folio)) + return folio_file_page(folio, index); + + /* Use a temporary page to avoid data corruption */ + folio_unlock(folio); + folio_put(folio); + page = alloc_page(gfp); + if (!page) + return ERR_PTR(-ENOMEM); + __SetPageLocked(page); + return page; +} + /* * ni_readpage_cmpr * @@ -2074,9 +2097,9 @@ int ni_readpage_cmpr(struct ntfs_inode *ni, struct folio *folio) if (i == idx) continue; - pg = find_or_create_page(mapping, index, gfp_mask); - if (!pg) { - err = -ENOMEM; + pg = ntfs_lock_new_page(mapping, index, gfp_mask); + if (IS_ERR(pg)) { + err = PTR_ERR(pg); goto out1; } pages[i] = pg; @@ -2175,13 +2198,13 @@ int ni_decompress_file(struct ntfs_inode *ni) for (i = 0; i < pages_per_frame; i++, index++) { struct page *pg; - pg = find_or_create_page(mapping, index, gfp_mask); - if (!pg) { + pg = ntfs_lock_new_page(mapping, index, gfp_mask); + if (IS_ERR(pg)) { while (i--) { unlock_page(pages[i]); put_page(pages[i]); } - err = -ENOMEM; + err = PTR_ERR(pg); goto out; } pages[i] = pg; -- 2.47.2

4 months

1
0
0 0

[PATCH 5.4 000/144] 5.4.296-rc2 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 5.4.296 release. There are 144 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 Fri, 18 Jul 2025 14:12:35 +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/v5.x/stable-review/patch-5.4.296-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 5.4.296-rc2 Georg Kohmann <geokohma(a)cisco.com> net: ipv6: Discard next-hop MTU less than minimum link MTU Jann Horn <jannh(a)google.com> x86/mm: Disable hugetlb page table sharing on 32-bit Hans de Goede <hdegoede(a)redhat.com> Input: atkbd - do not skip atkbd_deactivate() when skipping ATKBD_CMD_GETID Chia-Lin Kao (AceLan) <acelan.kao(a)canonical.com> HID: quirks: Add quirk for 2 Chicony Electronics HP 5MP Cameras Zhang Heng <zhangheng(a)kylinos.cn> HID: Add IGNORE quirk for SMARTLINKTECHNOLOGY Nicolas Pitre <npitre(a)baylibre.com> vt: add missing notification when switching back to text mode Xiaowei Li <xiaowei.li(a)simcom.com> net: usb: qmi_wwan: add SIMCom 8230C composition Thomas Fourier <fourier.thomas(a)gmail.com> atm: idt77252: Add missing `dma_map_error()` Somnath Kotur <somnath.kotur(a)broadcom.com> bnxt_en: Set DMA unmap len correctly for XDP_REDIRECT Shravya KN <shravya.k-n(a)broadcom.com> bnxt_en: Fix DCB ETS validation Sean Nyekjaer <sean(a)geanix.com> can: m_can: m_can_handle_lost_msg(): downgrade msg lost in rx message to debug level Oleksij Rempel <linux(a)rempel-privat.de> net: phy: microchip: limit 100M workaround to link-down events on LAN88xx Kito Xu <veritas501(a)foxmail.com> net: appletalk: Fix device refcount leak in atrtr_create() Wang Jinchao <wangjinchao600(a)gmail.com> md/raid1: Fix stack memory use after return in raid1_reshape Daniil Dulov <d.dulov(a)aladdin.ru> wifi: zd1211rw: Fix potential NULL pointer dereference in zd_mac_tx_to_dev() Christian König <christian.koenig(a)amd.com> dma-buf: fix timeout handling in dma_resv_wait_timeout v2 Nilton Perim Neto <niltonperimneto(a)gmail.com> Input: xpad - support Acer NGR 200 Controller Vicki Pfau <vi(a)endrift.com> Input: xpad - add VID for Turtle Beach controllers Matt Reynolds <mattreynolds(a)chromium.org> Input: xpad - add support for Amazon Game Controller Trond Myklebust <trond.myklebust(a)hammerspace.com> NFSv4/flexfiles: Fix handling of NFS level errors in I/O Tigran Mkrtchyan <tigran.mkrtchyan(a)desy.de> flexfiles/pNFS: update stats on NFS4ERR_DELAY for v4.1 DSes Patrisious Haddad <phaddad(a)nvidia.com> RDMA/mlx5: Fix vport loopback for MPV device Kuniyuki Iwashima <kuniyu(a)google.com> netlink: Fix rmem check in netlink_broadcast_deliver(). Jakub Kicinski <kuba(a)kernel.org> netlink: make sure we allow at least one dump skb Uwe Kleine-König <u.kleine-koenig(a)baylibre.com> pwm: mediatek: Ensure to disable clocks in error path Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Revert "ACPI: battery: negate current when discharging" Kuen-Han Tsai <khtsai(a)google.com> usb: gadget: u_serial: Fix race condition in TTY wakeup Matthew Brost <matthew.brost(a)intel.com> drm/sched: Increment job count before swapping tail spsc queue Bartosz Golaszewski <bartosz.golaszewski(a)linaro.org> pinctrl: qcom: msm: mark certain pins as invalid for interrupts JP Kobryn <inwardvessel(a)gmail.com> x86/mce: Make sure CMCI banks are cleared during shutdown on Intel Yazen Ghannam <yazen.ghannam(a)amd.com> x86/mce: Don't remove sysfs if thresholding sysfs init fails Yazen Ghannam <yazen.ghannam(a)amd.com> x86/mce/amd: Fix threshold limit reset David Howells <dhowells(a)redhat.com> rxrpc: Fix oops due to non-existence of prealloc backlog struct Victor Nogueira <victor(a)mojatatu.com> net/sched: Abort __tc_modify_qdisc if parent class does not exist Yue Haibing <yuehaibing(a)huawei.com> atm: clip: Fix NULL pointer dereference in vcc_sendmsg() Kuniyuki Iwashima <kuniyu(a)google.com> atm: clip: Fix infinite recursive call of clip_push(). Kuniyuki Iwashima <kuniyu(a)google.com> atm: clip: Fix memory leak of struct clip_vcc. Kuniyuki Iwashima <kuniyu(a)google.com> atm: clip: Fix potential null-ptr-deref in to_atmarpd(). Kuniyuki Iwashima <kuniyu(a)google.com> tipc: Fix use-after-free in tipc_conn_close(). Kuniyuki Iwashima <kuniyu(a)google.com> netlink: Fix wraparounds of sk->sk_rmem_alloc. Al Viro <viro(a)zeniv.linux.org.uk> fix proc_sys_compare() handling of in-lookup dentries Eric W. Biederman <ebiederm(a)xmission.com> proc: Clear the pieces of proc_inode that proc_evict_inode cares about Kaustabh Chakraborty <kauschluss(a)disroot.org> drm/exynos: exynos7_drm_decon: add vblank check in IRQ handling Nathan Chancellor <nathan(a)kernel.org> staging: rtl8723bs: Avoid memset() in aes_cipher() and aes_decipher() Ricardo Ribalda <ribalda(a)chromium.org> media: uvcvideo: Rollback non processed entities on error Ricardo Ribalda <ribalda(a)chromium.org> media: uvcvideo: Send control events for partial succeeds Ricardo Ribalda <ribalda(a)chromium.org> media: uvcvideo: Return the number of processed controls Seiji Nishikawa <snishika(a)redhat.com> ACPI: PAD: fix crash in exit_round_robin() Andrei Kuchynski <akuchynski(a)chromium.org> usb: typec: displayport: Fix potential deadlock Oliver Neukum <oneukum(a)suse.com> Logitech C-270 even more broken Kohei Enju <enjuk(a)amazon.com> rose: fix dangling neighbour pointers in rose_rt_device_down() Gustavo A. R. Silva <gustavoars(a)kernel.org> net: rose: Fix fall-through warnings for Clang Janusz Krzysztofik <janusz.krzysztofik(a)linux.intel.com> drm/i915/gt: Fix timeline left held on VMA alloc error Dan Carpenter <dan.carpenter(a)linaro.org> drm/i915/selftests: Change mock_request() to return error pointers James Clark <james.clark(a)linaro.org> spi: spi-fsl-dspi: Clear completion counter before initiating transfer Vladimir Oltean <vladimir.oltean(a)nxp.com> spi: spi-fsl-dspi: Fix interrupt-less DMA mode taking an XSPI code path Vladimir Oltean <vladimir.oltean(a)nxp.com> spi: spi-fsl-dspi: Rename fifo_{read,write} and {tx,cmd}_fifo_write Fushuai Wang <wangfushuai(a)baidu.com> dpaa2-eth: fix xdp_rxq_info leak Thomas Fourier <fourier.thomas(a)gmail.com> ethernet: atl1: Add missing DMA mapping error checks and count errors Filipe Manana <fdmanana(a)suse.com> btrfs: use btrfs_record_snapshot_destroy() during rmdir Filipe Manana <fdmanana(a)suse.com> btrfs: propagate last_unlink_trans earlier when doing a rmdir Patrisious Haddad <phaddad(a)nvidia.com> RDMA/mlx5: Fix CC counters query for MPV Leon Romanovsky <leon(a)kernel.org> RDMA/core: Create and destroy counters in the ib_core Bart Van Assche <bvanassche(a)acm.org> scsi: ufs: core: Fix spelling of a sysfs attribute name Maíra Canal <mcanal(a)igalia.com> drm/v3d: Disable interrupts before resetting the GPU Sergey Senozhatsky <senozhatsky(a)chromium.org> mtk-sd: reset host->mrq on prepare_data() error Masami Hiramatsu (Google) <mhiramat(a)kernel.org> mtk-sd: Prevent memory corruption from DMA map failure Yue Hu <huyue2(a)yulong.com> mmc: mediatek: use data instead of mrq parameter from msdc_{un}prepare_data() Manivannan Sadhasivam <mani(a)kernel.org> regulator: gpio: Fix the out-of-bounds access to drvdata::gpiods Jerome Neanne <jneanne(a)baylibre.com> regulator: gpio: Add input_supply support in gpio_regulator_config Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> ACPICA: Refuse to evaluate a method if arguments are missing Johannes Berg <johannes.berg(a)intel.com> wifi: ath6kl: remove WARN on bad firmware input Johannes Berg <johannes.berg(a)intel.com> wifi: mac80211: drop invalid source address OCB frames Madhavan Srinivasan <maddy(a)linux.ibm.com> powerpc: Fix struct termio related ioctl macros Johannes Berg <johannes.berg(a)intel.com> ata: pata_cs5536: fix build on 32-bit UML Takashi Iwai <tiwai(a)suse.de> ALSA: sb: Force to disable DMAs once when DMA mode is changed Lion Ackermann <nnamrec(a)gmail.com> net/sched: Always pass notifications when child class becomes empty Thomas Fourier <fourier.thomas(a)gmail.com> nui: Fix dma_mapping_error() check Alok Tiwari <alok.a.tiwari(a)oracle.com> enic: fix incorrect MTU comparison in enic_change_mtu() Raju Rangoju <Raju.Rangoju(a)amd.com> amd-xgbe: align CL37 AN sequence as per databook Dan Carpenter <dan.carpenter(a)linaro.org> lib: test_objagg: Set error message in check_expect_hints_stats() Marek Szyprowski <m.szyprowski(a)samsung.com> drm/exynos: fimd: Guard display clock control with runtime PM calls Filipe Manana <fdmanana(a)suse.com> btrfs: fix missing error handling when searching for inode refs during log replay Thomas Fourier <fourier.thomas(a)gmail.com> scsi: qla4xxx: Fix missing DMA mapping error in qla4xxx_alloc_pdu() Kuniyuki Iwashima <kuniyu(a)google.com> nfs: Clean up /proc/net/rpc/nfs when nfs_fs_proc_net_init() fails. Mark Zhang <markzhang(a)nvidia.com> RDMA/mlx5: Initialize obj_event->obj_sub_list before xa_insert David Thompson <davthompson(a)nvidia.com> platform/mellanox: mlxbf-tmfifo: fix vring_desc.len assignment Masami Hiramatsu (Google) <mhiramat(a)kernel.org> mtk-sd: Fix a pagefault in dma_unmap_sg() for not prepared data RD Babiera <rdbabiera(a)google.com> usb: typec: altmodes/displayport: do not index invalid pin_assignments Ulf Hansson <ulf.hansson(a)linaro.org> Revert "mmc: sdhci: Disable SD card clock before changing parameters" Victor Shih <victor.shih(a)genesyslogic.com.tw> mmc: sdhci: Add a helper function for dump register in dynamic debug mode HarshaVardhana S A <harshavardhana.sa(a)broadcom.com> vsock/vmci: Clear the vmci transport packet properly when initializing it Omar Sandoval <osandov(a)fb.com> btrfs: don't abort filesystem when attempting to snapshot deleted subvolume Dev Jain <dev.jain(a)arm.com> arm64: Restrict pagetable teardown to avoid false warning Nathan Chancellor <nathan(a)kernel.org> s390: Add '-std=gnu11' to decompressor and purgatory CFLAGS Aradhya Bhatia <a-bhatia1(a)ti.com> drm/bridge: cdns-dsi: Check return value when getting default PHY config Aradhya Bhatia <a-bhatia1(a)ti.com> drm/bridge: cdns-dsi: Fix connecting to next bridge Aradhya Bhatia <a-bhatia1(a)ti.com> drm/bridge: cdns-dsi: Fix the clock variable for mode_valid() Thierry Reding <treding(a)nvidia.com> drm/tegra: Assign plane type before registration Qasim Ijaz <qasdev00(a)gmail.com> HID: wacom: fix kobject reference count leak Qasim Ijaz <qasdev00(a)gmail.com> HID: wacom: fix memory leak on sysfs attribute creation failure Qasim Ijaz <qasdev00(a)gmail.com> HID: wacom: fix memory leak on kobject creation failure Heinz Mauelshagen <heinzm(a)redhat.com> dm-raid: fix variable in journal device check Frédéric Danis <frederic.danis(a)collabora.com> Bluetooth: L2CAP: Fix L2CAP MTU negotiation Kuniyuki Iwashima <kuniyu(a)google.com> atm: Release atm_dev_mutex after removing procfs in atm_dev_deregister(). Simon Horman <horms(a)kernel.org> net: enetc: Correct endianness handling in _enetc_rd_reg64 Tiwei Bie <tiwei.btw(a)antgroup.com> um: ubd: Add missing error check in start_io_thread() Stefano Garzarella <sgarzare(a)redhat.com> vsock/uapi: fix linux/vm_sockets.h userspace compilation errors Lachlan Hodges <lachlan.hodges(a)morsemicro.com> wifi: mac80211: fix beacon interval calculation overflow Al Viro <viro(a)zeniv.linux.org.uk> attach_recursive_mnt(): do not lock the covering tree when sliding something under it Youngjun Lee <yjjuny.lee(a)samsung.com> ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3() Wolfram Sang <wsa+renesas(a)sang-engineering.com> i2c: robotfuzz-osif: disable zero-length read messages Wolfram Sang <wsa+renesas(a)sang-engineering.com> i2c: tiny-usb: disable zero-length read messages Shin'ichiro Kawasaki <shinichiro.kawasaki(a)wdc.com> RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction Weihang Li <liweihang(a)huawei.com> RDMA/core: Use refcount_t instead of atomic_t on refcount of iwcm_id_private Denis Arefev <arefev(a)swemel.ru> media: vivid: Change the siize of the composing Marek Szyprowski <m.szyprowski(a)samsung.com> media: omap3isp: use sgtable-based scatterlist wrappers Edward Adam Davis <eadavis(a)qq.com> media: cxusb: no longer judge rbuf when the write fails Sean Young <sean(a)mess.org> media: cxusb: use dev_dbg() rather than hand-rolled debug Vasiliy Kovalev <kovalev(a)altlinux.org> jfs: validate AG parameters in dbMount() to prevent crashes Dave Kleikamp <dave.kleikamp(a)oracle.com> fs/jfs: consolidate sanity checking in dbMount Martin Blumenstingl <martin.blumenstingl(a)googlemail.com> ASoC: meson: meson-card-utils: use of_property_present() for DT parsing Rob Herring <robh(a)kernel.org> of: Add of_property_present() helper Michael Walle <michael(a)walle.cc> of: property: define of_property_read_u{8,16,32,64}_array() unconditionally Arnd Bergmann <arnd(a)arndb.de> kbuild: hdrcheck: fix cross build with clang Masahiro Yamada <masahiroy(a)kernel.org> kbuild: add --target to correctly cross-compile UAPI headers with Clang Masahiro Yamada <masahiroy(a)kernel.org> bpfilter: match bit size of bpfilter_umh to that of the kernel Masahiro Yamada <masahiroy(a)kernel.org> kbuild: use -MMD instead of -MD to exclude system headers from dependency Wupeng Ma <mawupeng1(a)huawei.com> VMCI: fix race between vmci_host_setup_notify and vmci_ctx_unset_notify George Kennedy <george.kennedy(a)oracle.com> VMCI: check context->notify_page after call to get_user_pages_fast() to avoid GPF Kees Cook <kees(a)kernel.org> ovl: Check for NULL d_inode() in ovl_dentry_upper() Dmitry Kandybka <d.kandybka(a)gmail.com> ceph: fix possible integer overflow in ceph_zero_objects() Cezary Rojewski <cezary.rojewski(a)intel.com> ALSA: hda: Ignore unsol events for cards being shut down Jos Wang <joswang(a)lenovo.com> usb: typec: displayport: Receive DP Status Update NAK request exit dp altmode Robert Hodaszi <robert.hodaszi(a)digi.com> usb: cdc-wdm: avoid setting WDM_READ for ZLP-s Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> usb: Add checks for snprintf() calls in usb_alloc_dev() Jakub Lewalski <jakub.lewalski(a)nokia.com> tty: serial: uartlite: register uart driver in init Chen Yufeng <chenyufeng(a)iie.ac.cn> usb: potential integer overflow in usbg_make_tpg() Jonathan Cameron <Jonathan.Cameron(a)huawei.com> iio: pressure: zpa2326: Use aligned_s64 for the timestamp Yu Kuai <yukuai3(a)huawei.com> md/md-bitmap: fix dm-raid max_write_behind setting Thomas Gessler <thomas.gessler(a)brueckmann-gmbh.de> dmaengine: xilinx_dma: Set dma_device directions Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> mfd: max14577: Fix wakeup source leaks on device unbind Peng Fan <peng.fan(a)nxp.com> mailbox: Not protect module_put with spin_lock_irqsave Pali Rohár <pali(a)kernel.org> cifs: Fix cifs_query_path_info() for Windows NT servers ------------- Diffstat: Documentation/ABI/testing/sysfs-driver-ufs | 2 +- Makefile | 4 +- arch/arm64/mm/mmu.c | 3 +- arch/powerpc/include/uapi/asm/ioctls.h | 8 +- arch/s390/Makefile | 2 +- arch/s390/purgatory/Makefile | 2 +- arch/um/drivers/ubd_user.c | 2 +- arch/x86/Kconfig | 2 +- arch/x86/kernel/cpu/mce/amd.c | 15 +- arch/x86/kernel/cpu/mce/core.c | 8 +- arch/x86/kernel/cpu/mce/intel.c | 1 + drivers/acpi/acpi_pad.c | 7 +- drivers/acpi/acpica/dsmethod.c | 7 + drivers/acpi/battery.c | 19 +- drivers/ata/pata_cs5536.c | 2 +- drivers/atm/idt77252.c | 5 + drivers/dma-buf/dma-resv.c | 5 +- drivers/dma/xilinx/xilinx_dma.c | 2 + drivers/gpu/drm/bridge/cdns-dsi.c | 11 +- drivers/gpu/drm/exynos/exynos7_drm_decon.c | 4 + drivers/gpu/drm/exynos/exynos_drm_fimd.c | 12 + drivers/gpu/drm/i915/gt/intel_ringbuffer.c | 3 +- drivers/gpu/drm/i915/selftests/i915_request.c | 20 +- drivers/gpu/drm/i915/selftests/mock_request.c | 2 +- drivers/gpu/drm/tegra/dc.c | 12 +- drivers/gpu/drm/tegra/hub.c | 4 +- drivers/gpu/drm/tegra/hub.h | 3 +- drivers/gpu/drm/v3d/v3d_drv.h | 9 + drivers/gpu/drm/v3d/v3d_gem.c | 2 + drivers/gpu/drm/v3d/v3d_irq.c | 36 ++- drivers/hid/hid-ids.h | 5 + drivers/hid/hid-quirks.c | 3 + drivers/hid/wacom_sys.c | 6 +- drivers/i2c/busses/i2c-robotfuzz-osif.c | 6 + drivers/i2c/busses/i2c-tiny-usb.c | 6 + drivers/iio/pressure/zpa2326.c | 2 +- drivers/infiniband/core/device.c | 1 + drivers/infiniband/core/iwcm.c | 38 +-- drivers/infiniband/core/iwcm.h | 2 +- .../infiniband/core/uverbs_std_types_counters.c | 17 +- drivers/infiniband/hw/mlx5/devx.c | 2 +- drivers/infiniband/hw/mlx5/main.c | 55 ++-- drivers/input/joystick/xpad.c | 5 + drivers/input/keyboard/atkbd.c | 3 +- drivers/mailbox/mailbox.c | 2 +- drivers/md/dm-raid.c | 2 +- drivers/md/md-bitmap.c | 2 +- drivers/md/raid1.c | 1 + drivers/media/platform/omap3isp/ispccdc.c | 8 +- drivers/media/platform/omap3isp/ispstat.c | 6 +- drivers/media/platform/vivid/vivid-vid-cap.c | 2 +- drivers/media/usb/dvb-usb/cxusb.c | 36 ++- drivers/media/usb/uvc/uvc_ctrl.c | 61 +++-- drivers/mfd/max14577.c | 1 + drivers/misc/vmw_vmci/vmci_host.c | 9 +- drivers/mmc/host/mtk-sd.c | 39 ++- drivers/mmc/host/sdhci.c | 9 +- drivers/mmc/host/sdhci.h | 16 ++ drivers/net/can/m_can/m_can.c | 2 +- drivers/net/ethernet/amd/xgbe/xgbe-common.h | 2 + drivers/net/ethernet/amd/xgbe/xgbe-mdio.c | 9 + drivers/net/ethernet/amd/xgbe/xgbe.h | 4 +- drivers/net/ethernet/atheros/atlx/atl1.c | 78 ++++-- drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c | 2 + drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +- drivers/net/ethernet/cisco/enic/enic_main.c | 4 +- drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 26 +- drivers/net/ethernet/freescale/enetc/enetc_hw.h | 2 +- drivers/net/ethernet/sun/niu.c | 31 ++- drivers/net/ethernet/sun/niu.h | 4 + drivers/net/phy/microchip.c | 2 +- drivers/net/usb/qmi_wwan.c | 1 + drivers/net/wireless/ath/ath6kl/bmi.c | 4 +- drivers/net/wireless/zydas/zd1211rw/zd_mac.c | 6 +- drivers/pinctrl/qcom/pinctrl-msm.c | 20 ++ drivers/platform/mellanox/mlxbf-tmfifo.c | 3 +- drivers/pwm/pwm-mediatek.c | 15 +- drivers/regulator/gpio-regulator.c | 19 +- drivers/scsi/qla4xxx/ql4_os.c | 2 + drivers/scsi/ufs/ufs-sysfs.c | 4 +- drivers/spi/spi-fsl-dspi.c | 55 ++-- drivers/staging/rtl8723bs/core/rtw_security.c | 46 +--- drivers/tty/serial/uartlite.c | 15 +- drivers/tty/vt/vt.c | 1 + drivers/usb/class/cdc-wdm.c | 23 +- drivers/usb/core/quirks.c | 3 +- drivers/usb/core/usb.c | 14 +- drivers/usb/gadget/function/f_tcm.c | 4 +- drivers/usb/gadget/function/u_serial.c | 6 +- drivers/usb/typec/altmodes/displayport.c | 5 +- fs/btrfs/inode.c | 36 +-- fs/btrfs/ioctl.c | 3 + fs/btrfs/tree-log.c | 4 +- fs/ceph/file.c | 2 +- fs/cifs/misc.c | 8 + fs/jfs/jfs_dmap.c | 41 +-- fs/namespace.c | 8 +- fs/nfs/flexfilelayout/flexfilelayout.c | 144 +++++++--- fs/nfs/inode.c | 17 +- fs/overlayfs/util.c | 4 +- fs/proc/inode.c | 16 +- fs/proc/proc_sysctl.c | 18 +- include/drm/spsc_queue.h | 4 +- include/linux/of.h | 291 ++++++++++----------- include/linux/regulator/gpio-regulator.h | 2 + include/linux/usb/typec_dp.h | 1 + include/rdma/ib_verbs.h | 7 +- include/uapi/linux/vm_sockets.h | 4 + init/Kconfig | 4 +- lib/test_objagg.c | 4 +- net/appletalk/ddp.c | 1 + net/atm/clip.c | 64 +++-- net/atm/resources.c | 3 +- net/bluetooth/l2cap_core.c | 9 +- net/bpfilter/Makefile | 5 +- net/ipv6/route.c | 3 +- net/mac80211/rx.c | 4 + net/mac80211/util.c | 2 +- net/netlink/af_netlink.c | 90 ++++--- net/rose/rose_route.c | 15 +- net/rxrpc/call_accept.c | 3 + net/sched/sch_api.c | 42 +-- net/tipc/topsrv.c | 2 + net/vmw_vsock/vmci_transport.c | 4 +- scripts/Kbuild.include | 2 +- scripts/Makefile.host | 4 +- scripts/Makefile.lib | 8 +- sound/isa/sb/sb16_main.c | 4 + sound/pci/hda/hda_bind.c | 2 +- sound/soc/meson/meson-card-utils.c | 2 +- sound/usb/stream.c | 2 + usr/include/Makefile | 6 +- 132 files changed, 1183 insertions(+), 685 deletions(-)

4 months

5
5
0 0

[PATCH 5.15 00/78] 5.15.189-rc2 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 5.15.189 release. There are 78 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 Thu, 17 Jul 2025 16:35:29 +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/v5.x/stable-review/patch-5.15.189-r… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 5.15.189-rc2 Michael Jeanson <mjeanson(a)efficios.com> rseq: Fix segfault on registration when rseq_cs is non-zero Jack Wang <jinpu.wang(a)ionos.com> x86: Fix X86_FEATURE_VERW_CLEAR definition Jann Horn <jannh(a)google.com> x86/mm: Disable hugetlb page table sharing on 32-bit Dongli Zhang <dongli.zhang(a)oracle.com> vhost-scsi: protect vq->log_used with vq->mutex Hans de Goede <hdegoede(a)redhat.com> Input: atkbd - do not skip atkbd_deactivate() when skipping ATKBD_CMD_GETID Chia-Lin Kao (AceLan) <acelan.kao(a)canonical.com> HID: quirks: Add quirk for 2 Chicony Electronics HP 5MP Cameras Zhang Heng <zhangheng(a)kylinos.cn> HID: Add IGNORE quirk for SMARTLINKTECHNOLOGY Nicolas Pitre <npitre(a)baylibre.com> vt: add missing notification when switching back to text mode Akira Inoue <niyarium(a)gmail.com> HID: lenovo: Add support for ThinkPad X1 Tablet Thin Keyboard Gen2 Xiaowei Li <xiaowei.li(a)simcom.com> net: usb: qmi_wwan: add SIMCom 8230C composition Tiwei Bie <tiwei.btw(a)antgroup.com> um: vector: Reduce stack usage in vector_eth_configure() Thomas Fourier <fourier.thomas(a)gmail.com> atm: idt77252: Add missing `dma_map_error()` Somnath Kotur <somnath.kotur(a)broadcom.com> bnxt_en: Set DMA unmap len correctly for XDP_REDIRECT Shravya KN <shravya.k-n(a)broadcom.com> bnxt_en: Fix DCB ETS validation Alok Tiwari <alok.a.tiwari(a)oracle.com> net: ll_temac: Fix missing tx_pending check in ethtools_set_ringparam() Sean Nyekjaer <sean(a)geanix.com> can: m_can: m_can_handle_lost_msg(): downgrade msg lost in rx message to debug level Oleksij Rempel <linux(a)rempel-privat.de> net: phy: microchip: limit 100M workaround to link-down events on LAN88xx Kito Xu <veritas501(a)foxmail.com> net: appletalk: Fix device refcount leak in atrtr_create() Eric Dumazet <edumazet(a)google.com> netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto() Al Viro <viro(a)zeniv.linux.org.uk> ksmbd: fix a mount write count leak in ksmbd_vfs_kern_path_locked() Stefan Metzmacher <metze(a)samba.org> smb: server: make use of rdma_destroy_qp() Zheng Qixing <zhengqixing(a)huawei.com> nbd: fix uaf in nbd_genl_connect() error path Nigel Croxon <ncroxon(a)redhat.com> raid10: cleanup memleak at raid10_make_request Wang Jinchao <wangjinchao600(a)gmail.com> md/raid1: Fix stack memory use after return in raid1_reshape Daniil Dulov <d.dulov(a)aladdin.ru> wifi: zd1211rw: Fix potential NULL pointer dereference in zd_mac_tx_to_dev() Kurt Borja <kuurtb(a)gmail.com> platform/x86: think-lmi: Fix sysfs group cleanup Christian König <christian.koenig(a)amd.com> dma-buf: fix timeout handling in dma_resv_wait_timeout v2 Christian König <christian.koenig(a)amd.com> dma-buf: use new iterator in dma_resv_wait_timeout Christian König <christian.koenig(a)amd.com> dma-buf: add dma_resv_for_each_fence_unlocked v8 Kuen-Han Tsai <khtsai(a)google.com> usb: dwc3: Abort suspend on soft disconnect failure Pawel Laszczak <pawell(a)cadence.com> usb: cdnsp: Fix issue with CV Bad Descriptor test Lee Jones <lee(a)kernel.org> usb: cdnsp: Replace snprintf() with the safer scnprintf() variant Pawel Laszczak <pawell(a)cadence.com> usb:cdnsp: remove TRB_FLUSH_ENDPOINT command Nilton Perim Neto <niltonperimneto(a)gmail.com> Input: xpad - support Acer NGR 200 Controller Hongyu Xie <xiehongyu1(a)kylinos.cn> xhci: Disable stream for xHC controller with XHCI_BROKEN_STREAMS Raju Rangoju <Raju.Rangoju(a)amd.com> usb: xhci: quirk for data loss in ISOC transfers Basavaraj Natikar <Basavaraj.Natikar(a)amd.com> xhci: Allow RPM on the USB controller (1022:43f7) by default Bui Quang Minh <minhquangbui99(a)gmail.com> virtio-net: ensure the received length does not exceed allocated size Jakub Kicinski <kuba(a)kernel.org> netlink: make sure we allow at least one dump skb Kuniyuki Iwashima <kuniyu(a)google.com> netlink: Fix rmem check in netlink_broadcast_deliver(). Uwe Kleine-König <u.kleine-koenig(a)baylibre.com> pwm: mediatek: Ensure to disable clocks in error path Patrisious Haddad <phaddad(a)nvidia.com> RDMA/mlx5: Fix vport loopback for MPV device Filipe Manana <fdmanana(a)suse.com> btrfs: use btrfs_record_snapshot_destroy() during rmdir Filipe Manana <fdmanana(a)suse.com> btrfs: propagate last_unlink_trans earlier when doing a rmdir Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Revert "ACPI: battery: negate current when discharging" Kuen-Han Tsai <khtsai(a)google.com> usb: gadget: u_serial: Fix race condition in TTY wakeup Simona Vetter <simona.vetter(a)ffwll.ch> drm/gem: Fix race in drm_gem_handle_create_tail() Matthew Brost <matthew.brost(a)intel.com> drm/sched: Increment job count before swapping tail spsc queue Bartosz Golaszewski <bartosz.golaszewski(a)linaro.org> pinctrl: qcom: msm: mark certain pins as invalid for interrupts Guillaume Nault <gnault(a)redhat.com> gre: Fix IPv6 multicast route creation. JP Kobryn <inwardvessel(a)gmail.com> x86/mce: Make sure CMCI banks are cleared during shutdown on Intel Yazen Ghannam <yazen.ghannam(a)amd.com> x86/mce: Don't remove sysfs if thresholding sysfs init fails Yazen Ghannam <yazen.ghannam(a)amd.com> x86/mce/amd: Fix threshold limit reset Juergen Gross <jgross(a)suse.com> xen: replace xen_remap() with memremap() Edward Adam Davis <eadavis(a)qq.com> jfs: fix null ptr deref in dtInsertEntry John Fastabend <john.fastabend(a)gmail.com> bpf, sockmap: Fix skb refcnt race after locking changes Maksim Kiselev <bigunclemax(a)gmail.com> aoe: avoid potential deadlock at set_capacity Lee, Chun-Yi <joeyli.kernel(a)gmail.com> thermal/int340x_thermal: handle data_vault when the value is ZERO_SIZE_PTR Andrii Nakryiko <andrii(a)kernel.org> bpf: fix precision backtracking instruction iteration David Howells <dhowells(a)redhat.com> rxrpc: Fix oops due to non-existence of prealloc backlog struct Jesse Brandeburg <jesse.brandeburg(a)intel.com> ice: safer stats processing Oleg Nesterov <oleg(a)redhat.com> fs/proc: do_task_stat: use __for_each_thread() Victor Nogueira <victor(a)mojatatu.com> net/sched: Abort __tc_modify_qdisc if parent class does not exist Yue Haibing <yuehaibing(a)huawei.com> atm: clip: Fix NULL pointer dereference in vcc_sendmsg() Kuniyuki Iwashima <kuniyu(a)google.com> atm: clip: Fix infinite recursive call of clip_push(). Kuniyuki Iwashima <kuniyu(a)google.com> atm: clip: Fix memory leak of struct clip_vcc. Kuniyuki Iwashima <kuniyu(a)google.com> atm: clip: Fix potential null-ptr-deref in to_atmarpd(). Oleksij Rempel <linux(a)rempel-privat.de> net: phy: smsc: Fix link failure in forced mode with Auto-MDIX Oleksij Rempel <linux(a)rempel-privat.de> net: phy: smsc: Fix Auto-MDIX configuration when disabled by strap Michal Luczaj <mhal(a)rbox.co> vsock: Fix IOCTL_VM_SOCKETS_GET_LOCAL_CID to check also `transport_local` Michal Luczaj <mhal(a)rbox.co> vsock: Fix transport_* TOCTOU Michal Luczaj <mhal(a)rbox.co> vsock: Fix transport_{g2h,h2g} TOCTOU Kuniyuki Iwashima <kuniyu(a)google.com> tipc: Fix use-after-free in tipc_conn_close(). Kuniyuki Iwashima <kuniyu(a)google.com> netlink: Fix wraparounds of sk->sk_rmem_alloc. Al Viro <viro(a)zeniv.linux.org.uk> fix proc_sys_compare() handling of in-lookup dentries Peter Zijlstra <peterz(a)infradead.org> perf: Revert to requiring CAP_SYS_ADMIN for uprobes Shengjiu Wang <shengjiu.wang(a)nxp.com> ASoC: fsl_asrc: use internal measured ratio for non-ideal ratio mode Kaustabh Chakraborty <kauschluss(a)disroot.org> drm/exynos: exynos7_drm_decon: add vblank check in IRQ handling ------------- Diffstat: Makefile | 4 +- arch/um/drivers/vector_kern.c | 42 +-- arch/x86/Kconfig | 2 +- arch/x86/include/asm/cpufeatures.h | 2 +- arch/x86/include/asm/xen/page.h | 3 - arch/x86/kernel/cpu/mce/amd.c | 15 +- arch/x86/kernel/cpu/mce/core.c | 8 +- arch/x86/kernel/cpu/mce/intel.c | 1 + drivers/acpi/battery.c | 19 +- drivers/atm/idt77252.c | 5 + drivers/block/aoe/aoeblk.c | 5 +- drivers/block/nbd.c | 6 +- drivers/dma-buf/dma-resv.c | 171 ++++++---- drivers/gpu/drm/drm_gem.c | 10 +- drivers/gpu/drm/exynos/exynos7_drm_decon.c | 4 + drivers/hid/hid-ids.h | 6 + drivers/hid/hid-lenovo.c | 8 + drivers/hid/hid-multitouch.c | 8 +- drivers/hid/hid-quirks.c | 3 + drivers/infiniband/hw/mlx5/main.c | 33 ++ drivers/input/joystick/xpad.c | 2 + drivers/input/keyboard/atkbd.c | 3 +- drivers/md/raid1.c | 1 + drivers/md/raid10.c | 10 +- drivers/net/can/m_can/m_can.c | 2 +- drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c | 2 + drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +- drivers/net/ethernet/intel/ice/ice_main.c | 29 +- drivers/net/ethernet/xilinx/ll_temac_main.c | 2 +- drivers/net/phy/microchip.c | 2 +- drivers/net/phy/smsc.c | 28 +- drivers/net/usb/qmi_wwan.c | 1 + drivers/net/virtio_net.c | 44 ++- drivers/net/wireless/zydas/zd1211rw/zd_mac.c | 6 +- drivers/pinctrl/qcom/pinctrl-msm.c | 20 ++ drivers/platform/x86/think-lmi.c | 35 +- drivers/pwm/pwm-mediatek.c | 15 +- .../intel/int340x_thermal/int3400_thermal.c | 9 +- drivers/tty/hvc/hvc_xen.c | 2 +- drivers/tty/vt/vt.c | 1 + drivers/usb/cdns3/cdnsp-debug.h | 358 ++++++++++----------- drivers/usb/cdns3/cdnsp-ep0.c | 18 +- drivers/usb/cdns3/cdnsp-gadget.c | 6 +- drivers/usb/cdns3/cdnsp-gadget.h | 11 +- drivers/usb/cdns3/cdnsp-ring.c | 27 +- drivers/usb/dwc3/core.c | 9 +- drivers/usb/dwc3/gadget.c | 22 +- drivers/usb/gadget/function/u_serial.c | 6 +- drivers/usb/host/xhci-mem.c | 4 + drivers/usb/host/xhci-pci.c | 30 +- drivers/usb/host/xhci-plat.c | 3 +- drivers/usb/host/xhci.h | 1 + drivers/vhost/scsi.c | 7 +- drivers/xen/grant-table.c | 6 +- drivers/xen/xenbus/xenbus_probe.c | 3 +- fs/btrfs/inode.c | 36 +-- fs/jfs/jfs_dtree.c | 2 + fs/ksmbd/transport_rdma.c | 5 +- fs/ksmbd/vfs.c | 1 + fs/proc/array.c | 6 +- fs/proc/inode.c | 2 +- fs/proc/proc_sysctl.c | 18 +- include/drm/drm_file.h | 3 + include/drm/spsc_queue.h | 4 +- include/linux/dma-resv.h | 95 ++++++ include/net/netfilter/nf_flow_table.h | 2 +- include/xen/arm/page.h | 3 - kernel/bpf/verifier.c | 21 +- kernel/events/core.c | 2 +- kernel/rseq.c | 60 +++- net/appletalk/ddp.c | 1 + net/atm/clip.c | 64 +++- net/core/skmsg.c | 12 +- net/ipv6/addrconf.c | 9 +- net/netlink/af_netlink.c | 90 +++--- net/rxrpc/call_accept.c | 3 + net/sched/sch_api.c | 23 +- net/tipc/topsrv.c | 2 + net/vmw_vsock/af_vsock.c | 57 +++- sound/soc/fsl/fsl_asrc.c | 3 +- 80 files changed, 1030 insertions(+), 576 deletions(-)

4 months

8
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RE: [PATCH] misc: rtsx: usb: Ensure mmc child device is active when card is present

by Gwendal Grignou

> > > - if (val & (SD_CD | MS_CD)) > > > + if (val & (SD_CD | MS_CD)) { > > > + device_for_each_child(&intf->dev, NULL, rtsx_usb_resume_child); > > Why not calling rtsx_usb_resume() here? > Because in this time rtsx_usb is not in runtime_suspend, only need to make sure child is not in suspend > Actually when the program came here this suspend will be rejected because return -EAGAIN > > > return -EAGAIN; > > > + } I meant: if (val & (SD_CD | MS_CD)) { rtsx_usb_resume(intf) return -EAGAIN; } It looks cleaner, as it indicates the the supsend is rejected and needs to be undone. The code is in the end indentical to the patch you are proposing. This is just for look anyway, the patch as-is is acceptable.

4 months

1
0
0 0

[PATCH] sunvdc: Balance device refcount in vdc_port_mpgroup_check

by Ma Ke

Using device_find_child() to locate a probed virtual-device-port node causes a device refcount imbalance, as device_find_child() internally calls get_device() to increment the device’s reference count before returning its pointer. vdc_port_mpgroup_check() directly returns true upon finding a matching device without releasing the reference via put_device(). We should call put_device() to decrement refcount. As comment of device_find_child() says, 'NOTE: you will need to drop the reference with put_device() after use'. Found by code review. Cc: stable(a)vger.kernel.org Fixes: 3ee70591d6c4 ("sunvdc: prevent sunvdc panic when mpgroup disk added to guest domain") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- drivers/block/sunvdc.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c index b5727dea15bd..b6dbd5dd2723 100644 --- a/drivers/block/sunvdc.c +++ b/drivers/block/sunvdc.c @@ -950,6 +950,7 @@ static bool vdc_port_mpgroup_check(struct vio_dev *vdev) { struct vdc_check_port_data port_data; struct device *dev; + bool found = false; port_data.dev_no = vdev->dev_no; port_data.type = (char *)&vdev->type; @@ -957,10 +958,12 @@ static bool vdc_port_mpgroup_check(struct vio_dev *vdev) dev = device_find_child(vdev->dev.parent, &port_data, vdc_device_probed); - if (dev) - return true; + if (dev) { + found = true; + put_device(dev); + } - return false; + return found; } static int vdc_port_probe(struct vio_dev *vdev, const struct vio_device_id *id) -- 2.25.1

4 months

2
1
0 0

[PATCH v2] ice: Fix a null pointer dereference in ice_copy_and_init_pkg()

by Haoxiang Li

Add check for the return value of devm_kmemdup() to prevent potential null pointer dereference. Fixes: c76488109616 ("ice: Implement Dynamic Device Personalization (DDP) download") Cc: stable(a)vger.kernel.org Signed-off-by: Haoxiang Li <haoxiang_li2024(a)163.com> Reviewed-by: Michal Swiatkowski <michal.swiatkowski(a)linux.intel.com> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov(a)intel.com> --- Changes in v2: - modify the Fixes commit number. Thanks, Michal! --- drivers/net/ethernet/intel/ice/ice_ddp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/intel/ice/ice_ddp.c b/drivers/net/ethernet/intel/ice/ice_ddp.c index 59323c019544..351824dc3c62 100644 --- a/drivers/net/ethernet/intel/ice/ice_ddp.c +++ b/drivers/net/ethernet/intel/ice/ice_ddp.c @@ -2301,6 +2301,8 @@ enum ice_ddp_state ice_copy_and_init_pkg(struct ice_hw *hw, const u8 *buf, return ICE_DDP_PKG_ERR; buf_copy = devm_kmemdup(ice_hw_to_dev(hw), buf, len, GFP_KERNEL); + if (!buf_copy) + return ICE_DDP_PKG_ERR; state = ice_init_pkg(hw, buf_copy, len); if (!ice_is_init_pkg_successful(state)) { -- 2.25.1

4 months

3
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[PATCH] HID: apple: validate feature-report field count to prevent NULL pointer dereference

by Qasim Ijaz

A malicious HID device with quirk APPLE_MAGIC_BACKLIGHT can trigger a NULL pointer dereference whilst the power feature-report is toggled and sent to the device in apple_magic_backlight_report_set(). The power feature-report is expected to have two data fields, but if the descriptor declares one field then accessing field[1] and dereferencing it in apple_magic_backlight_report_set() becomes invalid since field[1] will be NULL. An example of a minimal descriptor which can cause the crash is something like the following where the report with ID 3 (power report) only references a single 1-byte field. When hid core parses the descriptor it will encounter the final feature tag, allocate a hid_report (all members of field[] will be zeroed out), create field structure and populate it, increasing the maxfield to 1. The subsequent field[1] access and dereference causes the crash. Usage Page (Vendor Defined 0xFF00) Usage (0x0F) Collection (Application) Report ID (1) Usage (0x01) Logical Minimum (0) Logical Maximum (255) Report Size (8) Report Count (1) Feature (Data,Var,Abs) Usage (0x02) Logical Maximum (32767) Report Size (16) Report Count (1) Feature (Data,Var,Abs) Report ID (3) Usage (0x03) Logical Minimum (0) Logical Maximum (1) Report Size (8) Report Count (1) Feature (Data,Var,Abs) End Collection Here we see the KASAN splat when the kernel dereferences the NULL pointer and crashes: [ 15.164723] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN NOPTI [ 15.165691] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 15.165691] CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.15.0 #31 PREEMPT(voluntary) [ 15.165691] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 15.165691] RIP: 0010:apple_magic_backlight_report_set+0xbf/0x210 [ 15.165691] Call Trace: [ 15.165691] <TASK> [ 15.165691] apple_probe+0x571/0xa20 [ 15.165691] hid_device_probe+0x2e2/0x6f0 [ 15.165691] really_probe+0x1ca/0x5c0 [ 15.165691] __driver_probe_device+0x24f/0x310 [ 15.165691] driver_probe_device+0x4a/0xd0 [ 15.165691] __device_attach_driver+0x169/0x220 [ 15.165691] bus_for_each_drv+0x118/0x1b0 [ 15.165691] __device_attach+0x1d5/0x380 [ 15.165691] device_initial_probe+0x12/0x20 [ 15.165691] bus_probe_device+0x13d/0x180 [ 15.165691] device_add+0xd87/0x1510 [...] To fix this issue we should validate the number of fields that the backlight and power reports have and if they do not have the required number of fields then bail. Fixes: 394ba612f941 ("HID: apple: Add support for magic keyboard backlight on T2 Macs") Cc: stable(a)vger.kernel.org Signed-off-by: Qasim Ijaz <qasdev00(a)gmail.com> --- drivers/hid/hid-apple.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c index ed34f5cd5a91..183229ae5f02 100644 --- a/drivers/hid/hid-apple.c +++ b/drivers/hid/hid-apple.c @@ -890,7 +890,8 @@ static int apple_magic_backlight_init(struct hid_device *hdev) backlight->brightness = report_enum->report_id_hash[APPLE_MAGIC_REPORT_ID_BRIGHTNESS]; backlight->power = report_enum->report_id_hash[APPLE_MAGIC_REPORT_ID_POWER]; - if (!backlight->brightness || !backlight->power) + if (!backlight->brightness || backlight->brightness->maxfield < 2 || + !backlight->power || backlight->power->maxfield < 2) return -ENODEV; backlight->cdev.name = ":white:" LED_FUNCTION_KBD_BACKLIGHT; -- 2.39.5

4 months

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[PATCH] drm/panthor: Fix memory leak in panthor_ioctl_group_create()

by Jann Horn

When bailing out due to group_priority_permit() failure, the queue_args need to be freed. Fix it by rearranging the function to use the goto-on-error pattern, such that the success case flows straight without indentation while error cases jump forward to cleanup. Cc: stable(a)vger.kernel.org Fixes: 5f7762042f8a ("drm/panthor: Restrict high priorities on group_create") Signed-off-by: Jann Horn <jannh(a)google.com> --- testcase: ``` #include <err.h> #include <fcntl.h> #include <stddef.h> #include <sys/ioctl.h> #include <drm/panthor_drm.h> #define SYSCHK(x) ({ \ typeof(x) __res = (x); \ if (__res == (typeof(x))-1) \ err(1, "SYSCHK(" #x ")"); \ __res; \ }) #define GPU_PATH "/dev/dri/by-path/platform-fb000000.gpu-card" int main(void) { int fd = SYSCHK(open(GPU_PATH, O_RDWR)); while (1) { struct drm_panthor_queue_create qc[16] = {}; struct drm_panthor_group_create gc = { .queues = { .stride = sizeof(struct drm_panthor_queue_create), .count = 16, .array = (unsigned long)qc }, .priority = PANTHOR_GROUP_PRIORITY_HIGH+1/*invalid*/ }; ioctl(fd, DRM_IOCTL_PANTHOR_GROUP_CREATE, &gc); } } ``` I have tested that without this patch, after running the testcase for a few seconds and then manually killing it, 2G of RAM in kmalloc-128 have been leaked. With the patch applied, the memory leak is gone. (By the way, get_maintainer.pl suggests that I also send this patch to the general DRM maintainers and the DRM-misc maintainers; looking at MAINTAINERS, it looks like it is normal that the general DRM maintainers are listed for everything under drivers/gpu/, but DRM-misc has exclusion rules for a bunch of drivers but not panthor. I don't know if that is intentional.) --- drivers/gpu/drm/panthor/panthor_drv.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c index c520f156e2d73f7e735f8bf2d6d8e8efacec9362..815c23cff25f305d884e8e3e263fa22888f7d5ce 100644 --- a/drivers/gpu/drm/panthor/panthor_drv.c +++ b/drivers/gpu/drm/panthor/panthor_drv.c @@ -1032,14 +1032,15 @@ static int panthor_ioctl_group_create(struct drm_device *ddev, void *data, ret = group_priority_permit(file, args->priority); if (ret) - return ret; + goto out; ret = panthor_group_create(pfile, args, queue_args); - if (ret >= 0) { - args->group_handle = ret; - ret = 0; - } + if (ret < 0) + goto out; + args->group_handle = ret; + ret = 0; +out: kvfree(queue_args); return ret; } --- base-commit: 9f8e716d46c68112484a23d1742d9ec725e082fc change-id: 20241113-panthor-fix-gcq-bailout-2d9ac36590ed -- Jann Horn <jannh(a)google.com>

4 months

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