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[PATCH RESEND] userfaultfd: remove uffd flags from vma->vm_flags if UFFD_EVENT_FORK fails

by Mike Rapoport

The fix in commit 0cbb4b4f4c44 ("userfaultfd: clear the vma->vm_userfaultfd_ctx if UFFD_EVENT_FORK fails") cleared the vma->vm_userfaultfd_ctx but kept userfaultfd flags in vma->vm_flags that were copied from the parent process VMA. As the result, there is an inconsistency between the values of vma->vm_userfaultfd_ctx.ctx and vma->vm_flags which triggers BUG_ON in userfaultfd_release(). Clearing the uffd flags from vma->vm_flags in case of UFFD_EVENT_FORK failure resolves the issue. Signed-off-by: Mike Rapoport <rppt(a)linux.vnet.ibm.com> Reported-by: syzbot+121be635a7a35ddb7dcb(a)syzkaller.appspotmail.com Cc: Andrea Arcangeli <aarcange(a)redhat.com> Cc: Eric Biggers <ebiggers3(a)gmail.com> Cc: stable(a)vger.kernel.org --- fs/userfaultfd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index 594d192b2331..bad9cea37f12 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -633,8 +633,10 @@ static void userfaultfd_event_wait_completion(struct userfaultfd_ctx *ctx, /* the various vma->vm_userfaultfd_ctx still points to it */ down_write(&mm->mmap_sem); for (vma = mm->mmap; vma; vma = vma->vm_next) - if (vma->vm_userfaultfd_ctx.ctx == release_new_ctx) + if (vma->vm_userfaultfd_ctx.ctx == release_new_ctx) { vma->vm_userfaultfd_ctx = NULL_VM_UFFD_CTX; + vma->vm_flags &= ~(VM_UFFD_WP | VM_UFFD_MISSING); + } up_write(&mm->mmap_sem); userfaultfd_ctx_put(release_new_ctx); -- 2.7.4

7 years, 4 months

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[PATCH 1/2] net: socket: fix potential spectre v1 gadget in socketcall

by Jeremy Cline

'call' is a user-controlled value, so sanitize the array index after the bounds check to avoid speculating past the bounds of the 'nargs' array. Found with the help of Smatch: net/socket.c:2508 __do_sys_socketcall() warn: potential spectre issue 'nargs' [r] (local cap) Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: stable(a)vger.kernel.org Signed-off-by: Jeremy Cline <jcline(a)redhat.com> --- net/socket.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/socket.c b/net/socket.c index 3015ddace71e..f15d5cbb3ba4 100644 --- a/net/socket.c +++ b/net/socket.c @@ -89,6 +89,7 @@ #include <linux/magic.h> #include <linux/slab.h> #include <linux/xattr.h> +#include <linux/nospec.h> #include <linux/uaccess.h> #include <asm/unistd.h> @@ -2504,6 +2505,7 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) if (call < 1 || call > SYS_SENDMMSG) return -EINVAL; + call = array_index_nospec(call, SYS_SENDMMSG + 1); len = nargs[call]; if (len > sizeof(a)) -- 2.17.1

7 years, 4 months

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Linux 4.17.11

by Greg KH

I'm announcing the release of the 4.17.11 kernel. All users of the 4.17 kernel series must upgrade. The updated 4.17.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-4.17.y and can be browsed at the normal kernel.org git web browser: http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Makefile | 2 arch/mips/ath79/common.c | 2 arch/mips/pci/pci.c | 2 arch/powerpc/include/asm/mmu_context.h | 4 arch/powerpc/kvm/book3s_64_vio.c | 2 arch/powerpc/kvm/book3s_64_vio_hv.c | 6 arch/powerpc/mm/mmu_context_iommu.c | 37 + arch/x86/kvm/x86.c | 4 arch/x86/xen/xen-pvh.S | 26 + drivers/acpi/acpica/psloop.c | 26 + drivers/base/dd.c | 8 drivers/clk/clk-aspeed.c | 46 + drivers/clk/meson/gxbb.c | 1 drivers/clk/mvebu/armada-37xx-periph.c | 38 + drivers/gpu/drm/nouveau/dispnv04/disp.c | 3 drivers/gpu/drm/nouveau/nouveau_drm.c | 7 drivers/gpu/drm/nouveau/nv50_display.c | 8 drivers/iommu/Kconfig | 1 drivers/iommu/intel-iommu.c | 62 +- drivers/net/bonding/bond_options.c | 23 drivers/net/can/m_can/m_can.c | 11 drivers/net/can/peak_canfd/peak_pciefd_main.c | 19 drivers/net/can/xilinx_can.c | 392 +++++++++++----- drivers/net/dsa/mv88e6xxx/chip.c | 21 drivers/net/ethernet/huawei/hinic/hinic_tx.c | 1 drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 2 drivers/net/ethernet/mellanox/mlx5/core/en.h | 3 drivers/net/ethernet/mellanox/mlx5/core/en_arfs.c | 7 drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 17 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 15 drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 32 - drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 42 + drivers/net/ethernet/mellanox/mlx5/core/en_tc.h | 13 drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 2 drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c | 12 drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c | 2 drivers/net/ethernet/realtek/r8169.c | 3 drivers/net/phy/phy.c | 2 drivers/net/vxlan.c | 126 +++-- drivers/staging/rtl8188eu/Kconfig | 1 drivers/staging/rtl8188eu/core/rtw_recv.c | 161 ++++-- drivers/staging/rtl8188eu/core/rtw_security.c | 92 +-- drivers/staging/speakup/speakup_soft.c | 6 drivers/usb/class/cdc-acm.c | 3 drivers/usb/core/hub.c | 8 drivers/usb/dwc2/hcd.c | 44 - drivers/usb/gadget/composite.c | 1 drivers/usb/gadget/function/f_fs.c | 2 drivers/usb/host/xhci.c | 1 drivers/vfio/vfio_iommu_spapr_tce.c | 2 include/net/tcp.h | 7 net/core/rtnetlink.c | 9 net/core/skbuff.c | 10 net/core/sock.c | 6 net/ipv4/igmp.c | 3 net/ipv4/ip_output.c | 2 net/ipv4/ip_sockglue.c | 7 net/ipv4/tcp_dctcp.c | 50 -- net/ipv4/tcp_input.c | 65 ++ net/ipv4/tcp_output.c | 33 + net/ipv6/datagram.c | 7 net/ipv6/icmp.c | 5 net/ipv6/ip6_output.c | 2 net/ipv6/mcast.c | 3 net/ipv6/tcp_ipv6.c | 6 net/tls/tls_sw.c | 3 66 files changed, 1096 insertions(+), 473 deletions(-) Alexey Kardashevskiy (1): KVM: PPC: Check if IOMMU page is contained in the pinned physical page Anssi Hannula (7): can: xilinx_can: fix RX loop if RXNEMP is asserted without RXOK can: xilinx_can: fix power management handling can: xilinx_can: fix recovery from error states not being propagated can: xilinx_can: fix device dropping off bus on RX overrun can: xilinx_can: keep only 1-2 frames in TX FIFO to fix TX accounting can: xilinx_can: fix incorrect clear of non-processed interrupts can: xilinx_can: fix RX overflow interrupt not being enabled Antti Seppälä (1): usb: dwc2: Fix DMA alignment to start at allocated boundary Ariel Levkovich (1): net/mlx5: Adjust clock overflow work period Benjamin Herrenschmidt (1): usb: gadget: Fix OS descriptors support Bin Liu (1): usb: core: handle hub C_PORT_OVER_CURRENT condition Boris Ostrovsky (1): xen/PVH: Set up GS segment for stack canary Christoph Hellwig (1): Revert "iommu/intel-iommu: Enable CONFIG_DMA_DIRECT_OPS=y and clean up intel_{alloc,free}_coherent()" Daniel Borkmann (1): sock: fix sg page frag coalescing in sk_alloc_sg David Ahern (1): net/ipv6: Fix linklocal to global address with VRF Doron Roberts-Kedes (1): tls: check RCV_SHUTDOWN in tls_wait_data Eran Ben Elisha (2): net/mlx5e: Don't allow aRFS for encapsulated packets net/mlx5e: Fix quota counting in aRFS expire flow Eric Dumazet (6): net: skb_segment() should not return NULL tcp: free batches of packets in tcp_prune_ofo_queue() tcp: avoid collapses in tcp_prune_queue() if possible tcp: detect malicious patterns in tcp_collapse_ofo_queue() tcp: call tcp_drop() from tcp_data_queue_ofo() tcp: add tcp_ooo_try_coalesce() helper Faiz Abbas (1): can: m_can: Fix runtime resume call Felix Fietkau (1): MIPS: ath79: fix register address in ath79_ddr_wb_flush() Greg Kroah-Hartman (1): Linux 4.17.11 Gregory CLEMENT (1): clk: mvebu: armada-37xx-periph: Fix switching CPU rate from 300Mhz to 1.2GHz Hangbin Liu (1): multicast: do not restore deleted record source filter mode to new one Hans de Goede (1): Revert "staging:r8188eu: Use lib80211 to support TKIP" Heiner Kallweit (2): r8169: restore previous behavior to accept BIOS WoL settings net: phy: consider PHY_IGNORE_INTERRUPT in phy_start_aneg_priv Jack Morgenstein (1): net/mlx4_core: Save the qpn from the input modifier in RST2INIT wrapper Jarod Wilson (1): bonding: set default miimon value for non-arp modes if not set Jerry Zhang (1): usb: gadget: f_fs: Only return delayed status when len is 0 Joel Stanley (2): clk: aspeed: Mark bclk (PCIe) and dclk (VGA) as critical clk: aspeed: Support HPLL strapping on ast2400 John Hurley (1): nfp: flower: ensure dead neighbour entries are not offloaded Lubomir Rintel (1): usb: cdc_acm: Add quirk for Castles VEGA3000 Lyude Paul (2): drm/nouveau/drm/nouveau: Fix runtime PM leak in nv50_disp_atomic_commit() drm/nouveau: Set DRIVER_ATOMIC cap earlier to fix debugfs Neil Armstrong (1): clk: meson-gxbb: set fclk_div2 as CLK_IS_CRITICAL Or Gerlitz (1): net/mlx5e: Add ingress/egress indication for offloaded TC flows Paolo Abeni (1): ip: hash fragments consistently Paolo Bonzini (1): KVM: VMX: support MSR_IA32_ARCH_CAPABILITIES as a feature MSR Paul Burton (1): MIPS: Fix off-by-one in pci_resource_to_user() Rafael J. Wysocki (1): driver core: Partially revert "driver core: correct device's shutdown order" Roi Dayan (1): net/mlx5e: Only allow offloading decap egress (egdev) flows Roman Fietze (1): can: m_can.c: fix setup of CCCR register: clear CCCR NISO bit before checking can.ctrlmode Roopa Prabhu (4): rtnetlink: add rtnl_link_state check in rtnl_configure_link vxlan: add new fdb alloc and create helpers vxlan: make netlink notify in vxlan_fdb_destroy optional vxlan: fix default fdb entry netlink notify ordering during netdev create Saeed Mahameed (1): net/mlx5: E-Switch, UBSAN fix undefined behavior in mlx5_eswitch_mode Samuel Thibault (1): staging: speakup: fix wraparound in uaccess length check Schmauss, Erik (1): ACPICA: AML Parser: ignore dispatcher error status during table load Shay Agroskin (1): net/mlx5e: Refine ets validation function Stephane Grosjean (1): can: peak_canfd: fix firmware < v3.3.0: limit allocation to 32-bit DMA addr only Uwe Kleine-König (1): net: dsa: mv88e6xxx: fix races between lock and irq freeing Willem de Bruijn (1): ip: in cmsg IP(V6)_ORIGDSTADDR call pskb_may_pull Yuchung Cheng (4): tcp: fix dctcp delayed ACK schedule tcp: helpers to send special DCTCP ack tcp: do not cancel delay-AcK on DCTCP special ACK tcp: do not delay ACK in DCTCP upon CE status change Zhao Chen (1): net-next/hinic: fix a problem in hinic_xmit_frame() Zheng Xiaowei (1): usb: xhci: Fix memory leak in xhci_endpoint_reset()

7 years, 4 months

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Re: Linux 4.17.11

by rwarsow＠gmx.de

Hallo I see this since 4.17.11: [ 0.282161] ACPI Error: Result stack is empty! State= (ptrval) (20180313/dswstate-65) [ 0.282269] ACPI Error: AE_AML_NO_RETURN_VALUE, Missing or null operand (20180313/dsutils-612) [ 0.282375] ACPI Error: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20180313/dsutils-727) [ 0.282657] ACPI Error: Result stack is empty! State= (ptrval) (20180313/dswstate-65) [ 0.282762] ACPI Error: AE_AML_NO_RETURN_VALUE, Missing or null operand (20180313/dsutils-612) [ 0.282868] ACPI Error: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20180313/dsutils-727) [ 0.282973] ACPI Error: Result stack is empty! State= (ptrval) (20180313/dswstate-65) [ 0.284001] ACPI Error: AE_AML_NO_RETURN_VALUE, Missing or null operand (20180313/dsutils-612) [ 0.284106] ACPI Error: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20180313/dsutils-727) [ 0.284254] ACPI Error: Result stack is empty! State= (ptrval) (20180313/dswstate-65) [ 0.284359] ACPI Error: AE_AML_NO_RETURN_VALUE, Missing or null operand (20180313/dsutils-612) [ 0.284464] ACPI Error: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20180313/dsutils-727) [ 0.285235] ACPI Error: Result stack is empty! State= (ptrval) (20180313/dswstate-65) [ 0.285473] ACPI Error: AE_AML_NO_RETURN_VALUE, Missing or null operand (20180313/dsutils-612) [ 0.285709] ACPI Error: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20180313/dsutils-727) [ 0.286190] ACPI Error: Result stack is empty! State= (ptrval) (20180313/dswstate-65) [ 0.286425] ACPI Error: AE_AML_NO_RETURN_VALUE, Missing or null operand (20180313/dsutils-612) [ 0.286661] ACPI Error: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20180313/dsutils-727) [ 0.286897] ACPI Error: Result stack is empty! State= (ptrval) (20180313/dswstate-65) [ 0.287000] ACPI Error: AE_AML_NO_RETURN_VALUE, Missing or null operand (20180313/dsutils-612) [ 0.287237] ACPI Error: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20180313/dsutils-727) [ 0.287988] ACPI Error: Result stack is empty! State= (ptrval) (20180313/dswstate-65) [ 0.288001] ACPI Error: AE_AML_NO_RETURN_VALUE, Missing or null operand (20180313/dsutils-612) [ 0.288237] ACPI Error: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20180313/dsutils-727) [ 0.288482] ACPI Error: Unimplemented data type: 0x0 (20180313/dsobject-549) [ 0.299831] ACPI Error: Result stack is empty! State= (ptrval) (20180313/dswstate-65) [ 0.300001] ACPI Error: AE_AML_NO_RETURN_VALUE, Missing or null operand (20180313/dsutils-612) [ 0.300236] ACPI Error: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20180313/dsutils-727) [ 0.300513] ACPI Error: Result stack is empty! State= (ptrval) (20180313/dswstate-65) [ 0.300749] ACPI Error: AE_AML_NO_RETURN_VALUE, Missing or null operand (20180313/dsutils-612) [ 0.300984] ACPI Error: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20180313/dsutils-727) do I need to worry about - box runs as usual - ? -- greetings :-) Ronald

7 years, 4 months

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patch "USB: option: add support for DW5821e" added to usb-next

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled USB: option: add support for DW5821e to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. >From 7bab01ecc6c43da882333c6db39741cb43677004 Mon Sep 17 00:00:00 2001 From: Aleksander Morgado <aleksander(a)aleksander.es> Date: Tue, 24 Jul 2018 01:34:01 +0200 Subject: USB: option: add support for DW5821e The device exposes AT, NMEA and DIAG ports in both USB configurations. The patch explicitly ignores interfaces 0 and 1, as they're bound to other drivers already; and also interface 6, which is a GNSS interface for which we don't have a driver yet. T: Bus=01 Lev=03 Prnt=04 Port=00 Cnt=01 Dev#= 18 Spd=480 MxCh= 0 D: Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 2 P: Vendor=413c ProdID=81d7 Rev=03.18 S: Manufacturer=DELL S: Product=DW5821e Snapdragon X20 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 7 Cfg#= 2 Atr=a0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim I: If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 6 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) T: Bus=01 Lev=03 Prnt=04 Port=00 Cnt=01 Dev#= 16 Spd=480 MxCh= 0 D: Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 2 P: Vendor=413c ProdID=81d7 Rev=03.18 S: Manufacturer=DELL S: Product=DW5821e Snapdragon X20 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan I: If#= 1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option Signed-off-by: Aleksander Morgado <aleksander(a)aleksander.es> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/serial/option.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 664e61f16b6a..0215b70c4efc 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -196,6 +196,8 @@ static void option_instat_callback(struct urb *urb); #define DELL_PRODUCT_5800_V2_MINICARD_VZW 0x8196 /* Novatel E362 */ #define DELL_PRODUCT_5804_MINICARD_ATT 0x819b /* Novatel E371 */ +#define DELL_PRODUCT_5821E 0x81d7 + #define KYOCERA_VENDOR_ID 0x0c88 #define KYOCERA_PRODUCT_KPC650 0x17da #define KYOCERA_PRODUCT_KPC680 0x180a @@ -1030,6 +1032,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, DELL_PRODUCT_5800_MINICARD_VZW, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, DELL_PRODUCT_5800_V2_MINICARD_VZW, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, DELL_PRODUCT_5804_MINICARD_ATT, 0xff, 0xff, 0xff) }, + { USB_DEVICE(DELL_VENDOR_ID, DELL_PRODUCT_5821E), + .driver_info = RSVD(0) | RSVD(1) | RSVD(6) }, { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) }, /* ADU-E100, ADU-310 */ { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) }, { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_620UW) }, -- 2.18.0

7 years, 4 months

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[PATCH 01/10] KVM: x86: ensure all MSRs can always be KVM_GET/SET_MSR'd

by Paolo Bonzini

Some of the MSRs returned by GET_MSR_INDEX_LIST currently cannot be sent back to KVM_GET_MSR and/or KVM_SET_MSR; either they can never be sent back, or you they are only accepted under special conditions. This makes the API a pain to use. To avoid this pain, this patch makes it so that the result of the get-list ioctl can always be used for host-initiated get and set. Since we don't have a separate way to check for read-only MSRs, this means some Hyper-V MSRs are ignored when written. Arguably they should not even be in the result of GET_MSR_INDEX_LIST, but I am leaving there in case userspace is using the outcome of GET_MSR_INDEX_LIST to derive the support for the corresponding Hyper-V feature. Cc: stable(a)vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini(a)redhat.com> --- arch/x86/kvm/hyperv.c | 27 ++++++++++++++++++++------- arch/x86/kvm/hyperv.h | 2 +- arch/x86/kvm/x86.c | 15 +++++++++------ 3 files changed, 30 insertions(+), 14 deletions(-) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index af8caf965baa..01d209ab5481 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -235,7 +235,7 @@ static int synic_set_msr(struct kvm_vcpu_hv_synic *synic, struct kvm_vcpu *vcpu = synic_to_vcpu(synic); int ret; - if (!synic->active) + if (!synic->active && !host) return 1; trace_kvm_hv_synic_set_msr(vcpu->vcpu_id, msr, data, host); @@ -295,11 +295,12 @@ static int synic_set_msr(struct kvm_vcpu_hv_synic *synic, return ret; } -static int synic_get_msr(struct kvm_vcpu_hv_synic *synic, u32 msr, u64 *pdata) +static int synic_get_msr(struct kvm_vcpu_hv_synic *synic, u32 msr, u64 *pdata, + bool host) { int ret; - if (!synic->active) + if (!synic->active && !host) return 1; ret = 0; @@ -1014,6 +1015,11 @@ static int kvm_hv_set_msr_pw(struct kvm_vcpu *vcpu, u32 msr, u64 data, case HV_X64_MSR_TSC_EMULATION_STATUS: hv->hv_tsc_emulation_status = data; break; + case HV_X64_MSR_TIME_REF_COUNT: + /* read-only, but still ignore it if host-initiated */ + if (!host) + return 1; + break; default: vcpu_unimpl(vcpu, "Hyper-V uhandled wrmsr: 0x%x data 0x%llx\n", msr, data); @@ -1101,6 +1107,12 @@ static int kvm_hv_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host) return stimer_set_count(vcpu_to_stimer(vcpu, timer_index), data, host); } + case HV_X64_MSR_TSC_FREQUENCY: + case HV_X64_MSR_APIC_FREQUENCY: + /* read-only, but still ignore it if host-initiated */ + if (!host) + return 1; + break; default: vcpu_unimpl(vcpu, "Hyper-V uhandled wrmsr: 0x%x data 0x%llx\n", msr, data); @@ -1156,7 +1168,8 @@ static int kvm_hv_get_msr_pw(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) return 0; } -static int kvm_hv_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) +static int kvm_hv_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, + bool host) { u64 data = 0; struct kvm_vcpu_hv *hv = &vcpu->arch.hyperv; @@ -1183,7 +1196,7 @@ static int kvm_hv_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) case HV_X64_MSR_SIMP: case HV_X64_MSR_EOM: case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15: - return synic_get_msr(vcpu_to_synic(vcpu), msr, pdata); + return synic_get_msr(vcpu_to_synic(vcpu), msr, pdata, host); case HV_X64_MSR_STIMER0_CONFIG: case HV_X64_MSR_STIMER1_CONFIG: case HV_X64_MSR_STIMER2_CONFIG: @@ -1229,7 +1242,7 @@ int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host) return kvm_hv_set_msr(vcpu, msr, data, host); } -int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) +int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host) { if (kvm_hv_msr_partition_wide(msr)) { int r; @@ -1239,7 +1252,7 @@ int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) mutex_unlock(&vcpu->kvm->arch.hyperv.hv_lock); return r; } else - return kvm_hv_get_msr(vcpu, msr, pdata); + return kvm_hv_get_msr(vcpu, msr, pdata, host); } static __always_inline int get_sparse_bank_no(u64 valid_bank_mask, int bank_no) diff --git a/arch/x86/kvm/hyperv.h b/arch/x86/kvm/hyperv.h index 837465d69c6d..d6aa969e20f1 100644 --- a/arch/x86/kvm/hyperv.h +++ b/arch/x86/kvm/hyperv.h @@ -48,7 +48,7 @@ static inline struct kvm_vcpu *synic_to_vcpu(struct kvm_vcpu_hv_synic *synic) } int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host); -int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); +int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host); bool kvm_hv_hypercall_enabled(struct kvm *kvm); int kvm_hv_hypercall(struct kvm_vcpu *vcpu); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5dd67d184b17..6cc29dd21519 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2166,10 +2166,11 @@ static int set_msr_mce(struct kvm_vcpu *vcpu, struct msr_data *msr_info) vcpu->arch.mcg_status = data; break; case MSR_IA32_MCG_CTL: - if (!(mcg_cap & MCG_CTL_P)) + if (!(mcg_cap & MCG_CTL_P) && + (data || !msr_info->host_initiated)) return 1; if (data != 0 && data != ~(u64)0) - return -1; + return 1; vcpu->arch.mcg_ctl = data; break; default: @@ -2557,7 +2558,7 @@ int kvm_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr) } EXPORT_SYMBOL_GPL(kvm_get_msr); -static int get_msr_mce(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) +static int get_msr_mce(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host) { u64 data; u64 mcg_cap = vcpu->arch.mcg_cap; @@ -2572,7 +2573,7 @@ static int get_msr_mce(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) data = vcpu->arch.mcg_cap; break; case MSR_IA32_MCG_CTL: - if (!(mcg_cap & MCG_CTL_P)) + if (!(mcg_cap & MCG_CTL_P) && !host) return 1; data = vcpu->arch.mcg_ctl; break; @@ -2705,7 +2706,8 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) case MSR_IA32_MCG_CTL: case MSR_IA32_MCG_STATUS: case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_CTL(KVM_MAX_MCE_BANKS) - 1: - return get_msr_mce(vcpu, msr_info->index, &msr_info->data); + return get_msr_mce(vcpu, msr_info->index, &msr_info->data, + msr_info->host_initiated); case MSR_K7_CLK_CTL: /* * Provide expected ramp-up count for K7. All other @@ -2726,7 +2728,8 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) case HV_X64_MSR_TSC_EMULATION_CONTROL: case HV_X64_MSR_TSC_EMULATION_STATUS: return kvm_hv_get_msr_common(vcpu, - msr_info->index, &msr_info->data); + msr_info->index, &msr_info->data, + msr_info->host_initiated); break; case MSR_IA32_BBL_CR_CTL3: /* This legacy MSR exists but isn't fully documented in current -- 1.8.3.1

7 years, 4 months

1
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v4.17.11 build: 0 failures 1 warnings (v4.17.11)

by Build bot for Mark Brown

Tree/Branch: v4.17.11 Git describe: v4.17.11 Commit: 84d52eb065 Linux 4.17.11 Build Time: 0 min 13 sec Passed: 8 / 8 (100.00 %) Failed: 0 / 8 ( 0.00 %) Errors: 0 Warnings: 1 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 1 warnings 0 mismatches : arm-allmodconfig 1 warnings 0 mismatches : arm-multi_v7_defconfig 1 warnings 0 mismatches : arm-multi_v5_defconfig ------------------------------------------------------------------------------- Warnings Summary: 1 3 ../include/net/ip6_route.h:71:12: warning: 'rt' may be used uninitialized in this function [-Wmaybe-uninitialized] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../include/net/ip6_route.h:71:12: warning: 'rt' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../include/net/ip6_route.h:71:12: warning: 'rt' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../include/net/ip6_route.h:71:12: warning: 'rt' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm-multi_v4t_defconfig x86_64-allmodconfig arm-allnoconfig x86_64-defconfig

7 years, 4 months

1
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[PATCH 2/2] ALSA: hda - Sleep for 10ms after entering D3 on Conexant codecs

by Park Ju Hyung

On rare occasions, we are still noticing that the internal speaker spitting out spurious noises even after adding the problematic codec to the list. Adding a 10ms artificial delay before rebooting fixes the issue entirely. Patch for Realtek codecs also adds the same amount of delay after entering D3. Signed-off-by: Park Ju Hyung <qkrwngud825(a)gmail.com> Cc: <stable(a)vger.kernel.org> --- sound/pci/hda/patch_conexant.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index 909a880f5e01..1a8a2d440fbd 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -226,6 +226,7 @@ static void cx_auto_reboot_notify(struct hda_codec *codec) snd_hda_codec_set_power_to_all(codec, codec->core.afg, AC_PWRST_D3); snd_hda_codec_write(codec, codec->core.afg, 0, AC_VERB_SET_POWER_STATE, AC_PWRST_D3); + msleep(10); } static void cx_auto_free(struct hda_codec *codec) -- 2.18.0

7 years, 4 months

2
1
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[PATCH 1/2] ALSA: hda - Turn CX8200 into D3 as well upon reboot

by Park Ju Hyung

As an equivalent codec with CX20724, CX8200 is also subject to the reboot bug. Late 2017 and 2018 LG Gram and some HP Spectre laptops are known victims to this issue, causing extremely loud noises upon reboot. Now that we know that this bug is subject to multiple codecs, fix the comment as well. Signed-off-by: Park Ju Hyung <qkrwngud825(a)gmail.com> Cc: <stable(a)vger.kernel.org> --- sound/pci/hda/patch_conexant.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index f641c20095f7..909a880f5e01 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -211,6 +211,7 @@ static void cx_auto_reboot_notify(struct hda_codec *codec) struct conexant_spec *spec = codec->spec; switch (codec->core.vendor_id) { + case 0x14f12008: /* CX8200 */ case 0x14f150f2: /* CX20722 */ case 0x14f150f4: /* CX20724 */ break; @@ -218,7 +219,7 @@ static void cx_auto_reboot_notify(struct hda_codec *codec) return; } - /* Turn the CX20722 codec into D3 to avoid spurious noises + /* Turn the problematic codec into D3 to avoid spurious noises from the internal speaker during (and after) reboot */ cx_auto_turn_eapd(codec, spec->num_eapds, spec->eapds, false); -- 2.18.0

7 years, 4 months

2
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patch "USB: option: add support for DW5821e" added to usb-testing

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled USB: option: add support for DW5821e to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the usb-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. >From 7bab01ecc6c43da882333c6db39741cb43677004 Mon Sep 17 00:00:00 2001 From: Aleksander Morgado <aleksander(a)aleksander.es> Date: Tue, 24 Jul 2018 01:34:01 +0200 Subject: USB: option: add support for DW5821e The device exposes AT, NMEA and DIAG ports in both USB configurations. The patch explicitly ignores interfaces 0 and 1, as they're bound to other drivers already; and also interface 6, which is a GNSS interface for which we don't have a driver yet. T: Bus=01 Lev=03 Prnt=04 Port=00 Cnt=01 Dev#= 18 Spd=480 MxCh= 0 D: Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 2 P: Vendor=413c ProdID=81d7 Rev=03.18 S: Manufacturer=DELL S: Product=DW5821e Snapdragon X20 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 7 Cfg#= 2 Atr=a0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim I: If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 6 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) T: Bus=01 Lev=03 Prnt=04 Port=00 Cnt=01 Dev#= 16 Spd=480 MxCh= 0 D: Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 2 P: Vendor=413c ProdID=81d7 Rev=03.18 S: Manufacturer=DELL S: Product=DW5821e Snapdragon X20 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan I: If#= 1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option Signed-off-by: Aleksander Morgado <aleksander(a)aleksander.es> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/serial/option.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 664e61f16b6a..0215b70c4efc 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -196,6 +196,8 @@ static void option_instat_callback(struct urb *urb); #define DELL_PRODUCT_5800_V2_MINICARD_VZW 0x8196 /* Novatel E362 */ #define DELL_PRODUCT_5804_MINICARD_ATT 0x819b /* Novatel E371 */ +#define DELL_PRODUCT_5821E 0x81d7 + #define KYOCERA_VENDOR_ID 0x0c88 #define KYOCERA_PRODUCT_KPC650 0x17da #define KYOCERA_PRODUCT_KPC680 0x180a @@ -1030,6 +1032,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, DELL_PRODUCT_5800_MINICARD_VZW, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, DELL_PRODUCT_5800_V2_MINICARD_VZW, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, DELL_PRODUCT_5804_MINICARD_ATT, 0xff, 0xff, 0xff) }, + { USB_DEVICE(DELL_VENDOR_ID, DELL_PRODUCT_5821E), + .driver_info = RSVD(0) | RSVD(1) | RSVD(6) }, { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) }, /* ADU-E100, ADU-310 */ { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) }, { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_620UW) }, -- 2.18.0

7 years, 4 months

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