- Linux-stable-mirror - lists.linaro.org

[Linux-stable-mirror] [PATCH 4.4.y 1/3] ASoC: simple-card: Fix misleading error message

by Nhan Nguyen

From: Julian Scheel <julian(a)jusst.de> commit 7ac45d1635a4cd2e99a4b11903d4a2815ca1b27b upstream. In case cpu could not be found the error message would always refer to /codec/ not being found in DT. Fix this by catching the cpu node not found case explicitly. Cc: stable(a)vger.kernel.org Signed-off-by: Julian Scheel <julian(a)jusst.de> Signed-off-by: Mark Brown <broonie(a)kernel.org> Signed-off-by: thongsyho <thong.ho.px(a)rvc.renesas.com> Signed-off-by: Nhan Nguyen <nhan.nguyen.yb(a)renesas.com> --- sound/soc/generic/simple-card.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c index ff6fcd9..0b1b6fc 100644 --- a/sound/soc/generic/simple-card.c +++ b/sound/soc/generic/simple-card.c @@ -343,13 +343,19 @@ static int asoc_simple_card_dai_link_of(struct device_node *node, snprintf(prop, sizeof(prop), "%scpu", prefix); cpu = of_get_child_by_name(node, prop); + if (!cpu) { + ret = -EINVAL; + dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop); + goto dai_link_of_err; + } + snprintf(prop, sizeof(prop), "%splat", prefix); plat = of_get_child_by_name(node, prop); snprintf(prop, sizeof(prop), "%scodec", prefix); codec = of_get_child_by_name(node, prop); - if (!cpu || !codec) { + if (!codec) { ret = -EINVAL; dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop); goto dai_link_of_err; -- 1.9.1

7 years, 4 months

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[Linux-stable-mirror] [PATCH] net: cdc_ncm: initialize drvflags before usage

by Matthias

From: Matthias Hintzmann <matthias.dev(a)gmx.de> ctx->drvflags is checked in the if clause before beeing initialized. Move initialization before first usage. Note, that the if clause was backported from mainline at Nov. 15th 2017 (GetNtbFormat endian fix). In mainline, the initialization is at the right place before the if clause. Signed-off-by: Matthias Hintzmann <matthias.dev(a)gmx.de> --- drivers/net/usb/cdc_ncm.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c index 1228d0da407..72cb30828a1 100644 --- a/drivers/net/usb/cdc_ncm.c +++ b/drivers/net/usb/cdc_ncm.c @@ -825,6 +825,9 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_ goto error2; } + /* Device-specific flags */ + ctx->drvflags = drvflags; + /* * Some Huawei devices have been observed to come out of reset in NDP32 mode. * Let's check if this is the case, and set the device to NDP16 mode again if @@ -873,9 +876,6 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_ /* finish setting up the device specific data */ cdc_ncm_setup(dev); - /* Device-specific flags */ - ctx->drvflags = drvflags; - /* Allocate the delayed NDP if needed. */ if (ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END) { ctx->delayed_ndp16 = kzalloc(ctx->max_ndp_size, GFP_KERNEL); -- 2.15.1

7 years, 4 months

2
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[Linux-stable-mirror] [PATCH 4.15 00/60] 4.15.2-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.15.2 release. There are 60 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 Wed Feb 7 18:21:57 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.15.2-rc1.gz or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.15.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.15.2-rc1 Ian Abbott <abbotti(a)mev.co.uk> fpga: region: release of_parse_phandle nodes after use Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> serial: core: mark port as initialized after successful IRQ change KarimAllah Ahmed <karahmed(a)amazon.de> KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL KarimAllah Ahmed <karahmed(a)amazon.de> KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL KarimAllah Ahmed <karahmed(a)amazon.de> KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES Ashok Raj <ashok.raj(a)intel.com> KVM/x86: Add IBPB support KarimAllah Ahmed <karahmed(a)amazon.de> KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX Darren Kenny <darren.kenny(a)oracle.com> x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL Arnd Bergmann <arnd(a)arndb.de> x86/pti: Mark constant arrays as __initconst KarimAllah Ahmed <karahmed(a)amazon.de> x86/spectre: Simplify spectre_v2 command line parsing David Woodhouse <dwmw(a)amazon.co.uk> x86/retpoline: Avoid retpolines for built-in __init functions Dan Williams <dan.j.williams(a)intel.com> x86/kvm: Update spectre-v1 mitigation Paolo Bonzini <pbonzini(a)redhat.com> KVM: VMX: make MSR bitmaps per-VCPU Josh Poimboeuf <jpoimboe(a)redhat.com> x86/paravirt: Remove 'noreplace-paravirt' cmdline option Tim Chen <tim.c.chen(a)linux.intel.com> x86/speculation: Use Indirect Branch Prediction Barrier in context switch David Woodhouse <dwmw(a)amazon.co.uk> x86/cpuid: Fix up "virtual" IBRS/IBPB/STIBP feature bits on Intel Colin Ian King <colin.king(a)canonical.com> x86/spectre: Fix spelling mistake: "vunerable"-> "vulnerable" Dan Williams <dan.j.williams(a)intel.com> x86/spectre: Report get_user mitigation for spectre_v1 Dan Williams <dan.j.williams(a)intel.com> nl80211: Sanitize array index in parse_txq_params Dan Williams <dan.j.williams(a)intel.com> vfs, fdtable: Prevent bounds-check bypass via speculative execution Dan Williams <dan.j.williams(a)intel.com> x86/syscall: Sanitize syscall table de-references under speculation Dan Williams <dan.j.williams(a)intel.com> x86/get_user: Use pointer masking to limit speculation Dan Williams <dan.j.williams(a)intel.com> x86/uaccess: Use __uaccess_begin_nospec() and uaccess_try_nospec Dan Williams <dan.j.williams(a)intel.com> x86/usercopy: Replace open coded stac/clac with __uaccess_{begin, end} Dan Williams <dan.j.williams(a)intel.com> x86: Introduce __uaccess_begin_nospec() and uaccess_try_nospec Dan Williams <dan.j.williams(a)intel.com> x86: Introduce barrier_nospec Dan Williams <dan.j.williams(a)intel.com> x86: Implement array_index_mask_nospec Dan Williams <dan.j.williams(a)intel.com> array_index_nospec: Sanitize speculative array de-references Mark Rutland <mark.rutland(a)arm.com> Documentation: Document array_index_nospec Andy Lutomirski <luto(a)kernel.org> x86/asm: Move 'status' from thread_struct to thread_info Andy Lutomirski <luto(a)kernel.org> x86/entry/64: Push extra regs right away Andy Lutomirski <luto(a)kernel.org> x86/entry/64: Remove the SYSCALL64 fast path Dou Liyang <douly.fnst(a)cn.fujitsu.com> x86/spectre: Check CONFIG_RETPOLINE in command line parser William Grant <william.grant(a)canonical.com> x86/mm: Fix overlap of i386 CPU_ENTRY_AREA with FIX_BTMAP Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Warn on stripped section symbol Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Add support for alternatives at the end of a section Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Improve retpoline alternative handling Paolo Bonzini <pbonzini(a)redhat.com> KVM: VMX: introduce alloc_loaded_vmcs Jim Mattson <jmattson(a)google.com> KVM: nVMX: Eliminate vmcs02 pool Jesse Chan <jc(a)linux.com> ASoC: pcm512x: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE Jesse Chan <jc(a)linux.com> pinctrl: pxa: pxa2xx: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE Linus Walleij <linus.walleij(a)linaro.org> iio: adc/accel: Fix up module licenses Jesse Chan <jc(a)linux.com> auxdisplay: img-ascii-lcd: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE Borislav Petkov <bp(a)suse.de> x86/speculation: Simplify indirect_branch_prediction_barrier() Borislav Petkov <bp(a)alien8.de> x86/retpoline: Simplify vmexit_fill_RSB() David Woodhouse <dwmw(a)amazon.co.uk> x86/cpufeatures: Clean up Spectre v2 related CPUID flags Thomas Gleixner <tglx(a)linutronix.de> x86/cpu/bugs: Make retpoline module warning conditional Borislav Petkov <bp(a)suse.de> x86/bugs: Drop one "mitigation" from dmesg Borislav Petkov <bp(a)suse.de> x86/nospec: Fix header guards names Borislav Petkov <bp(a)suse.de> x86/alternative: Print unadorned pointers David Woodhouse <dwmw(a)amazon.co.uk> x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support David Woodhouse <dwmw(a)amazon.co.uk> x86/cpufeature: Blacklist SPEC_CTRL/PRED_CMD on early Spectre v2 microcodes David Woodhouse <dwmw(a)amazon.co.uk> x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown David Woodhouse <dwmw(a)amazon.co.uk> x86/msr: Add definitions for new speculation control MSRs David Woodhouse <dwmw(a)amazon.co.uk> x86/cpufeatures: Add AMD feature bits for Speculation Control David Woodhouse <dwmw(a)amazon.co.uk> x86/cpufeatures: Add Intel feature bits for Speculation Control David Woodhouse <dwmw(a)amazon.co.uk> x86/cpufeatures: Add CPUID_7_EDX CPUID leaf Andi Kleen <ak(a)linux.intel.com> module/retpoline: Warn about missing retpoline in module Peter Zijlstra <peterz(a)infradead.org> KVM: VMX: Make indirect call speculation safe Peter Zijlstra <peterz(a)infradead.org> KVM: x86: Make indirect calls in emulator speculation safe ------------- Diffstat: Documentation/admin-guide/kernel-parameters.txt | 2 - Documentation/speculation.txt | 90 ++++ Makefile | 4 +- arch/x86/entry/common.c | 9 +- arch/x86/entry/entry_32.S | 3 +- arch/x86/entry/entry_64.S | 130 +---- arch/x86/entry/syscall_64.c | 7 +- arch/x86/include/asm/asm-prototypes.h | 3 + arch/x86/include/asm/barrier.h | 28 + arch/x86/include/asm/cpufeature.h | 7 +- arch/x86/include/asm/cpufeatures.h | 22 +- arch/x86/include/asm/disabled-features.h | 3 +- arch/x86/include/asm/fixmap.h | 6 +- arch/x86/include/asm/msr-index.h | 12 + arch/x86/include/asm/msr.h | 3 +- arch/x86/include/asm/nospec-branch.h | 86 +-- arch/x86/include/asm/pgtable_32_types.h | 5 +- arch/x86/include/asm/processor.h | 5 +- arch/x86/include/asm/required-features.h | 3 +- arch/x86/include/asm/syscall.h | 6 +- arch/x86/include/asm/thread_info.h | 3 +- arch/x86/include/asm/tlbflush.h | 2 + arch/x86/include/asm/uaccess.h | 15 +- arch/x86/include/asm/uaccess_32.h | 6 +- arch/x86/include/asm/uaccess_64.h | 12 +- arch/x86/kernel/alternative.c | 28 +- arch/x86/kernel/cpu/bugs.c | 134 +++-- arch/x86/kernel/cpu/common.c | 70 ++- arch/x86/kernel/cpu/intel.c | 66 +++ arch/x86/kernel/cpu/scattered.c | 2 - arch/x86/kernel/process_64.c | 4 +- arch/x86/kernel/ptrace.c | 2 +- arch/x86/kernel/signal.c | 2 +- arch/x86/kvm/cpuid.c | 22 +- arch/x86/kvm/cpuid.h | 1 + arch/x86/kvm/emulate.c | 9 +- arch/x86/kvm/svm.c | 116 +++++ arch/x86/kvm/vmx.c | 660 ++++++++++++++---------- arch/x86/kvm/x86.c | 1 + arch/x86/lib/Makefile | 1 + arch/x86/lib/getuser.S | 10 + arch/x86/lib/retpoline.S | 56 ++ arch/x86/lib/usercopy_32.c | 8 +- arch/x86/mm/tlb.c | 33 +- drivers/auxdisplay/img-ascii-lcd.c | 4 + drivers/fpga/fpga-region.c | 13 +- drivers/iio/accel/kxsd9-i2c.c | 3 + drivers/iio/adc/qcom-vadc-common.c | 4 + drivers/pinctrl/pxa/pinctrl-pxa2xx.c | 4 + drivers/tty/serial/serial_core.c | 2 + include/linux/fdtable.h | 5 +- include/linux/init.h | 9 +- include/linux/module.h | 9 + include/linux/nospec.h | 72 +++ kernel/module.c | 11 + net/wireless/nl80211.c | 9 +- scripts/mod/modpost.c | 9 + sound/soc/codecs/pcm512x-spi.c | 4 + tools/objtool/check.c | 89 ++-- tools/objtool/orc_gen.c | 5 + 60 files changed, 1312 insertions(+), 637 deletions(-)

7 years, 4 months

4
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[Linux-stable-mirror] [PATCH 3.18 00/36] 3.18.94-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 3.18.94 release. There are 36 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 Wed Feb 7 18:23:41 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: kernel.org/pub/linux/kernel/v3.x/stable-review/patch-3.18.94-rc1.gz or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-3.18.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 3.18.94-rc1 Jesse Chan <jc(a)linux.com> ASoC: pcm512x: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE Stefan Agner <stefan(a)agner.ch> spi: imx: do not access registers while clocks disabled Mark Salyzyn <salyzyn(a)android.com> selinux: general protection fault in sock_has_perm Oliver Neukum <oneukum(a)suse.com> usb: uas: unconditionally bring back host after reset Hemant Kumar <hemantk(a)codeaurora.org> usb: f_fs: Prevent gadget unbind if it is already unbound Johan Hovold <johan(a)kernel.org> USB: serial: simple: add Motorola Tetra driver Shuah Khan <shuahkh(a)osg.samsung.com> usbip: list: don't list devices attached to vhci_hcd Shuah Khan <shuahkh(a)osg.samsung.com> usbip: prevent bind loops on devices attached to vhci_hcd Jia-Ju Bai <baijiaju1990(a)gmail.com> USB: serial: io_edgeport: fix possible sleep-in-atomic Oliver Neukum <oneukum(a)suse.com> CDC-ACM: apply quirk for card reader Hans de Goede <hdegoede(a)redhat.com> USB: cdc-acm: Do not log urb submission errors on disconnect Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> USB: serial: pl2303: new device id for Chilitag Larry Finger <Larry.Finger(a)lwfinger.net> staging: rtl8188eu: Fix incorrect response to SIOCGIWESSID Colin Ian King <colin.king(a)canonical.com> usb: gadget: don't dereference g until after it has been null checked Icenowy Zheng <icenowy(a)aosc.io> media: usbtv: add a new usbid Gustavo A. R. Silva <garsilva(a)embeddedor.com> scsi: ufs: ufshcd: fix potential NULL pointer dereference in ufshcd_config_vreg Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> quota: Check for register_shrinker() failure. Geert Uytterhoeven <geert+renesas(a)glider.be> net: ethernet: xilinx: Mark XILINX_LL_TEMAC broken on 64-bit Robert Lippert <roblip(a)gmail.com> hwmon: (pmbus) Use 64bit math for DIRECT format values Andrew Elble <aweits(a)rit.edu> nfsd: check for use of the closed special stateid Trond Myklebust <trond.myklebust(a)primarydata.com> nfsd: CLOSE SHOULD return the invalid special stateid for NFSv4.x (x>0) Eduardo Otubo <otubo(a)redhat.com> xen-netfront: remove warning when unloading module Wanpeng Li <wanpeng.li(a)hotmail.com> KVM: VMX: Fix rflags cache during vCPU reset Chun-Yeow Yeoh <yeohchunyeow(a)gmail.com> mac80211: fix the update of path metric for RANN frame Michael Lyle <mlyle(a)lyle.org> bcache: check return value of register_shrinker Wanpeng Li <wanpeng.li(a)hotmail.com> KVM: X86: Fix operand/address-size during instruction decoding Liran Alon <liran.alon(a)oracle.com> KVM: x86: Don't re-execute instruction when not passing CR2 value Liran Alon <liran.alon(a)oracle.com> KVM: x86: emulator: Return to user-mode on L1 CPL=0 emulation failure Lyude Paul <lyude(a)redhat.com> igb: Free IRQs when device is hotplugged Jesse Chan <jc(a)linux.com> gpio: iop: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE Takashi Iwai <tiwai(a)suse.de> ALSA: seq: Make ioctls race-free Linus Torvalds <torvalds(a)linux-foundation.org> loop: fix concurrent lo_open/lo_release Richard Weinberger <richard(a)nod.at> um: Remove copy&paste code from init.h Richard Weinberger <richard(a)nod.at> um: Stop abusing __KERNEL__ Thomas Meyer <thomas(a)m3y3r.de> um: link vmlinux with -no-pie Dmitry Torokhov <dmitry.torokhov(a)gmail.com> Input: do not emit unneeded EV_SYN when suspending ------------- Diffstat: Makefile | 4 ++-- arch/um/Makefile | 9 +++++---- arch/um/drivers/mconsole.h | 2 +- arch/um/include/shared/init.h | 24 ++---------------------- arch/um/include/shared/user.h | 2 +- arch/x86/include/asm/kvm_host.h | 3 ++- arch/x86/kvm/emulate.c | 7 +++++++ arch/x86/kvm/vmx.c | 4 ++-- arch/x86/kvm/x86.c | 2 +- arch/x86/um/shared/sysdep/tls.h | 6 +++--- drivers/block/loop.c | 10 ++++++++-- drivers/gpio/gpio-iop.c | 4 ++++ drivers/hwmon/pmbus/pmbus_core.c | 21 ++++++++++++--------- drivers/input/input.c | 5 ++++- drivers/md/bcache/btree.c | 5 ++++- drivers/media/usb/usbtv/usbtv-core.c | 1 + drivers/net/ethernet/intel/igb/igb_main.c | 2 +- drivers/net/ethernet/xilinx/Kconfig | 1 + drivers/net/xen-netfront.c | 18 ++++++++++++++++++ drivers/scsi/ufs/ufshcd.c | 7 +++++-- drivers/spi/spi-imx.c | 15 +++++++++++++-- drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 14 ++++---------- drivers/usb/class/cdc-acm.c | 5 ++++- drivers/usb/gadget/composite.c | 7 +++++-- drivers/usb/gadget/function/f_fs.c | 3 ++- drivers/usb/serial/Kconfig | 1 + drivers/usb/serial/io_edgeport.c | 1 - drivers/usb/serial/pl2303.c | 1 + drivers/usb/serial/pl2303.h | 1 + drivers/usb/serial/usb-serial-simple.c | 7 +++++++ drivers/usb/storage/uas.c | 7 +++---- fs/nfsd/nfs4state.c | 15 +++++++++++++-- fs/quota/dquot.c | 3 ++- net/mac80211/mesh_hwmp.c | 15 +++++++++------ security/selinux/hooks.c | 2 ++ sound/core/seq/seq_clientmgr.c | 10 ++++++++-- sound/core/seq/seq_clientmgr.h | 1 + sound/soc/codecs/pcm512x-spi.c | 4 ++++ tools/usb/usbip/src/usbip_bind.c | 9 +++++++++ tools/usb/usbip/src/usbip_list.c | 9 +++++++++ 40 files changed, 182 insertions(+), 85 deletions(-)

7 years, 4 months

3
35
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[Linux-stable-mirror] Add patch "arch: define weak abort()" to 4.14-stable tree

by Evgeniy Didin

Patch subject: "arch: define weak abort()" Commit ID: 7c2c11b208be Reason: While building mpi.ko module with lastest stable Linux v4.14.17 an error occured: >ERROR: "abort" [lib/mpi/mpi.ko] undefined! Kernel version: 4.14.x

7 years, 4 months

2
2
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[Linux-stable-mirror] [PATCH 0/3] vfio, dax: disable filesystem-dax and minor fixups

by Dan Williams

Alex, here is a change to vaddr_get_pfn() that we discussed in this thread: https://lists.nongnu.org/archive/html/qemu-devel/2018-01/msg07117.html Namely, drop support for passing Filesystem-DAX mappings through to guests. Perhaps in the future we can create some para-virtualized passthrough interface to coordinate guest-DMA vs host-filesystem operations. For now, this needs to be disabled for data-integrity and guaranteeing forward progress of filesystem operations. If you want to take this through your tree please grab the other dax fixups as well. Otherwise, let me know and I'll take the lot through the nvdimm tree. --- Dan Williams (3): dax: fix S_DAX definition dax: short circuit vma_is_fsdax() in the CONFIG_FS_DAX=n case vfio: disable filesystem-dax page pinning drivers/vfio/vfio_iommu_type1.c | 18 +++++++++++++++--- include/linux/fs.h | 4 +++- 2 files changed, 18 insertions(+), 4 deletions(-)

7 years, 4 months

3
8
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[Linux-stable-mirror] [PATCH 4.14 00/64] 4.14.18-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.14.18 release. There are 64 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 Wed Feb 7 18:21:22 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.18-rc1.gz or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.14.18-rc1 Ian Abbott <abbotti(a)mev.co.uk> fpga: region: release of_parse_phandle nodes after use Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> serial: core: mark port as initialized after successful IRQ change KarimAllah Ahmed <karahmed(a)amazon.de> KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL KarimAllah Ahmed <karahmed(a)amazon.de> KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL KarimAllah Ahmed <karahmed(a)amazon.de> KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES Ashok Raj <ashok.raj(a)intel.com> KVM/x86: Add IBPB support KarimAllah Ahmed <karahmed(a)amazon.de> KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX Darren Kenny <darren.kenny(a)oracle.com> x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL Arnd Bergmann <arnd(a)arndb.de> x86/pti: Mark constant arrays as __initconst KarimAllah Ahmed <karahmed(a)amazon.de> x86/spectre: Simplify spectre_v2 command line parsing David Woodhouse <dwmw(a)amazon.co.uk> x86/retpoline: Avoid retpolines for built-in __init functions Dan Williams <dan.j.williams(a)intel.com> x86/kvm: Update spectre-v1 mitigation Paolo Bonzini <pbonzini(a)redhat.com> KVM: VMX: make MSR bitmaps per-VCPU Josh Poimboeuf <jpoimboe(a)redhat.com> x86/paravirt: Remove 'noreplace-paravirt' cmdline option Tim Chen <tim.c.chen(a)linux.intel.com> x86/speculation: Use Indirect Branch Prediction Barrier in context switch David Woodhouse <dwmw(a)amazon.co.uk> x86/cpuid: Fix up "virtual" IBRS/IBPB/STIBP feature bits on Intel Colin Ian King <colin.king(a)canonical.com> x86/spectre: Fix spelling mistake: "vunerable"-> "vulnerable" Dan Williams <dan.j.williams(a)intel.com> x86/spectre: Report get_user mitigation for spectre_v1 Dan Williams <dan.j.williams(a)intel.com> nl80211: Sanitize array index in parse_txq_params Dan Williams <dan.j.williams(a)intel.com> vfs, fdtable: Prevent bounds-check bypass via speculative execution Dan Williams <dan.j.williams(a)intel.com> x86/syscall: Sanitize syscall table de-references under speculation Dan Williams <dan.j.williams(a)intel.com> x86/get_user: Use pointer masking to limit speculation Dan Williams <dan.j.williams(a)intel.com> x86/uaccess: Use __uaccess_begin_nospec() and uaccess_try_nospec Dan Williams <dan.j.williams(a)intel.com> x86/usercopy: Replace open coded stac/clac with __uaccess_{begin, end} Dan Williams <dan.j.williams(a)intel.com> x86: Introduce __uaccess_begin_nospec() and uaccess_try_nospec Dan Williams <dan.j.williams(a)intel.com> x86: Introduce barrier_nospec Dan Williams <dan.j.williams(a)intel.com> x86: Implement array_index_mask_nospec Dan Williams <dan.j.williams(a)intel.com> array_index_nospec: Sanitize speculative array de-references Mark Rutland <mark.rutland(a)arm.com> Documentation: Document array_index_nospec Andy Lutomirski <luto(a)kernel.org> x86/asm: Move 'status' from thread_struct to thread_info Andy Lutomirski <luto(a)kernel.org> x86/entry/64: Push extra regs right away Andy Lutomirski <luto(a)kernel.org> x86/entry/64: Remove the SYSCALL64 fast path Dou Liyang <douly.fnst(a)cn.fujitsu.com> x86/spectre: Check CONFIG_RETPOLINE in command line parser William Grant <william.grant(a)canonical.com> x86/mm: Fix overlap of i386 CPU_ENTRY_AREA with FIX_BTMAP Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Warn on stripped section symbol Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Add support for alternatives at the end of a section Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Improve retpoline alternative handling Paolo Bonzini <pbonzini(a)redhat.com> KVM: VMX: introduce alloc_loaded_vmcs Jim Mattson <jmattson(a)google.com> KVM: nVMX: Eliminate vmcs02 pool Jesse Chan <jc(a)linux.com> ASoC: pcm512x: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE Jesse Chan <jc(a)linux.com> pinctrl: pxa: pxa2xx: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE Linus Walleij <linus.walleij(a)linaro.org> iio: adc/accel: Fix up module licenses Jesse Chan <jc(a)linux.com> auxdisplay: img-ascii-lcd: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE Borislav Petkov <bp(a)suse.de> x86/speculation: Simplify indirect_branch_prediction_barrier() Borislav Petkov <bp(a)alien8.de> x86/retpoline: Simplify vmexit_fill_RSB() David Woodhouse <dwmw(a)amazon.co.uk> x86/cpufeatures: Clean up Spectre v2 related CPUID flags Thomas Gleixner <tglx(a)linutronix.de> x86/cpu/bugs: Make retpoline module warning conditional Borislav Petkov <bp(a)suse.de> x86/bugs: Drop one "mitigation" from dmesg Borislav Petkov <bp(a)suse.de> x86/nospec: Fix header guards names Borislav Petkov <bp(a)suse.de> x86/alternative: Print unadorned pointers David Woodhouse <dwmw(a)amazon.co.uk> x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support David Woodhouse <dwmw(a)amazon.co.uk> x86/cpufeature: Blacklist SPEC_CTRL/PRED_CMD on early Spectre v2 microcodes David Woodhouse <dwmw(a)amazon.co.uk> x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown David Woodhouse <dwmw(a)amazon.co.uk> x86/msr: Add definitions for new speculation control MSRs David Woodhouse <dwmw(a)amazon.co.uk> x86/cpufeatures: Add AMD feature bits for Speculation Control David Woodhouse <dwmw(a)amazon.co.uk> x86/cpufeatures: Add Intel feature bits for Speculation Control David Woodhouse <dwmw(a)amazon.co.uk> x86/cpufeatures: Add CPUID_7_EDX CPUID leaf Andi Kleen <ak(a)linux.intel.com> module/retpoline: Warn about missing retpoline in module Peter Zijlstra <peterz(a)infradead.org> KVM: VMX: Make indirect call speculation safe Peter Zijlstra <peterz(a)infradead.org> KVM: x86: Make indirect calls in emulator speculation safe Waiman Long <longman(a)redhat.com> x86/retpoline: Remove the esp/rsp thunk Michael Ellerman <mpe(a)ellerman.id.au> powerpc/64s: Allow control of RFI flush via debugfs Michael Ellerman <mpe(a)ellerman.id.au> powerpc/64s: Wire up cpu_show_meltdown() Liu, Changcheng <changcheng.liu(a)intel.com> scripts/faddr2line: fix CROSS_COMPILE unset error ------------- Diffstat: Documentation/admin-guide/kernel-parameters.txt | 2 - Documentation/speculation.txt | 90 ++++ Makefile | 4 +- arch/powerpc/Kconfig | 1 + arch/powerpc/kernel/setup_64.c | 38 ++ arch/x86/entry/common.c | 9 +- arch/x86/entry/entry_32.S | 3 +- arch/x86/entry/entry_64.S | 130 +---- arch/x86/entry/syscall_64.c | 7 +- arch/x86/include/asm/asm-prototypes.h | 4 +- arch/x86/include/asm/barrier.h | 28 + arch/x86/include/asm/cpufeature.h | 7 +- arch/x86/include/asm/cpufeatures.h | 22 +- arch/x86/include/asm/disabled-features.h | 3 +- arch/x86/include/asm/fixmap.h | 6 +- arch/x86/include/asm/msr-index.h | 12 + arch/x86/include/asm/msr.h | 3 +- arch/x86/include/asm/nospec-branch.h | 86 +-- arch/x86/include/asm/pgtable_32_types.h | 5 +- arch/x86/include/asm/processor.h | 5 +- arch/x86/include/asm/required-features.h | 3 +- arch/x86/include/asm/syscall.h | 6 +- arch/x86/include/asm/thread_info.h | 3 +- arch/x86/include/asm/tlbflush.h | 2 + arch/x86/include/asm/uaccess.h | 15 +- arch/x86/include/asm/uaccess_32.h | 6 +- arch/x86/include/asm/uaccess_64.h | 12 +- arch/x86/kernel/alternative.c | 28 +- arch/x86/kernel/cpu/bugs.c | 134 +++-- arch/x86/kernel/cpu/common.c | 70 ++- arch/x86/kernel/cpu/intel.c | 66 +++ arch/x86/kernel/cpu/scattered.c | 2 - arch/x86/kernel/process_64.c | 4 +- arch/x86/kernel/ptrace.c | 2 +- arch/x86/kernel/signal.c | 2 +- arch/x86/kvm/cpuid.c | 22 +- arch/x86/kvm/cpuid.h | 1 + arch/x86/kvm/emulate.c | 9 +- arch/x86/kvm/svm.c | 116 +++++ arch/x86/kvm/vmx.c | 660 ++++++++++++++---------- arch/x86/kvm/x86.c | 1 + arch/x86/lib/Makefile | 1 + arch/x86/lib/getuser.S | 10 + arch/x86/lib/retpoline.S | 57 +- arch/x86/lib/usercopy_32.c | 8 +- arch/x86/mm/tlb.c | 33 +- drivers/auxdisplay/img-ascii-lcd.c | 4 + drivers/fpga/fpga-region.c | 13 +- drivers/iio/accel/kxsd9-i2c.c | 3 + drivers/iio/adc/qcom-vadc-common.c | 4 + drivers/pinctrl/pxa/pinctrl-pxa2xx.c | 4 + drivers/tty/serial/serial_core.c | 2 + include/linux/fdtable.h | 5 +- include/linux/init.h | 9 +- include/linux/module.h | 9 + include/linux/nospec.h | 72 +++ kernel/module.c | 11 + net/wireless/nl80211.c | 9 +- scripts/faddr2line | 8 +- scripts/mod/modpost.c | 9 + sound/soc/codecs/pcm512x-spi.c | 4 + tools/objtool/check.c | 89 ++-- tools/objtool/orc_gen.c | 5 + 63 files changed, 1355 insertions(+), 643 deletions(-)

7 years, 4 months

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Re: [Linux-stable-mirror] rtc-opal: Fix handling of firmware error codes, prevent busy loops

by Alexandre Belloni

Hi, On 02/08/2016 at 11:50:16 +1000, Stewart Smith wrote: > According to the OPAL docs: > https://github.com/open-power/skiboot/blob/skiboot-5.2.5/doc/opal-api/opal-… > https://github.com/open-power/skiboot/blob/skiboot-5.2.5/doc/opal-api/opal-… > OPAL_HARDWARE may be returned from OPAL_RTC_READ or OPAL_RTC_WRITE and this > indicates either a transient or permanent error. > > Prior to this patch, Linux was not dealing with OPAL_HARDWARE being a > permanent error particularly well, in that you could end up in a busy > loop. > > This was not too hard to trigger on an AMI BMC based OpenPOWER machine > doing a continuous "ipmitool mc reset cold" to the BMC, the result of > that being that we'd get stuck in an infinite loop in opal_get_rtc_time. > > We now retry a few times before returning the error higher up the stack. > > Cc: stable(a)vger.kernel.org > Signed-off-by: Stewart Smith <stewart(a)linux.vnet.ibm.com> > --- > drivers/rtc/rtc-opal.c | 12 ++++++++++-- > 1 file changed, 10 insertions(+), 2 deletions(-) > Just a note to let you know that this patch should have gone through my tree but it was not sent to linux-rtc or me. I guess what happened is that Michael cleaned up the Linux PPC patchwork queue. -- Alexandre Belloni, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering http://bootlin.com

7 years, 4 months

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[Linux-stable-mirror] [PATCH 1/1] ext4: don't put symlink in pagecache into highmem

by Jin Qian

From: Jin Qian <jinqian(a)google.com> partial backport of 21fc61c73c3903c4c312d0802da01ec2b323d174. ext4_encrypted_follow_link uses kmap() for cpage caddr = kmap(cpage); _ext4_fname_disk_to_usr calls virt_to_page on the kmapped address. _ext4_fname_disk_to_usr() ext4_fname_decrypt() sg_init_one() sg_init_one(&src_sg, iname->name, iname->len); sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf)); Cc: stable(a)vger.kernel.org Signed-off-by: Al Viro <viro(a)zeniv.linux.org.uk> Signed-off-by: Jin Qian <jinqian(a)android.com> --- fs/ext4/inode.c | 1 + fs/ext4/namei.c | 1 + fs/ext4/symlink.c | 10 +++------- fs/inode.c | 6 ++++++ include/linux/fs.h | 1 + 5 files changed, 12 insertions(+), 7 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 4df1cb19a243..f0cabc8c96cb 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4417,6 +4417,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) inode->i_op = &ext4_symlink_inode_operations; ext4_set_aops(inode); } + inode_nohighmem(inode); } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { inode->i_op = &ext4_special_inode_operations; diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 4c36dca486cc..32960b3ecd4f 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3151,6 +3151,7 @@ static int ext4_symlink(struct inode *dir, if ((disk_link.len > EXT4_N_BLOCKS * 4)) { if (!encryption_required) inode->i_op = &ext4_symlink_inode_operations; + inode_nohighmem(inode); ext4_set_aops(inode); /* * We cannot call page_symlink() with transaction started diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c index e8e7af62ac95..287c3980fa0b 100644 --- a/fs/ext4/symlink.c +++ b/fs/ext4/symlink.c @@ -45,7 +45,7 @@ static const char *ext4_encrypted_follow_link(struct dentry *dentry, void **cook cpage = read_mapping_page(inode->i_mapping, 0, NULL); if (IS_ERR(cpage)) return ERR_CAST(cpage); - caddr = kmap(cpage); + caddr = page_address(cpage); caddr[size] = 0; } @@ -75,16 +75,12 @@ static const char *ext4_encrypted_follow_link(struct dentry *dentry, void **cook /* Null-terminate the name */ if (res <= plen) paddr[res] = '\0'; - if (cpage) { - kunmap(cpage); + if (cpage) page_cache_release(cpage); - } return *cookie = paddr; errout: - if (cpage) { - kunmap(cpage); + if (cpage) page_cache_release(cpage); - } kfree(paddr); return ERR_PTR(res); } diff --git a/fs/inode.c b/fs/inode.c index b0edef500590..b95615f3fc50 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -2028,3 +2028,9 @@ void inode_set_flags(struct inode *inode, unsigned int flags, new_flags) != old_flags)); } EXPORT_SYMBOL(inode_set_flags); + +void inode_nohighmem(struct inode *inode) +{ + mapping_set_gfp_mask(inode->i_mapping, GFP_USER); +} +EXPORT_SYMBOL(inode_nohighmem); diff --git a/include/linux/fs.h b/include/linux/fs.h index c8decb7075d6..f746a59fcc88 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3066,5 +3066,6 @@ static inline bool dir_relax(struct inode *inode) } extern bool path_noexec(const struct path *path); +extern void inode_nohighmem(struct inode *inode); #endif /* _LINUX_FS_H */ -- 2.16.0.rc1.238.g530d649a79-goog

7 years, 4 months

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[Linux-stable-mirror] [tip:x86/pti] x86/entry/64/compat: Clear registers for compat syscalls, to reduce speculation attack surface

by tip-bot for Dan Williams

Commit-ID: 6b8cf5cc9965673951f1ab3f0e3cf23d06e3e2ee Gitweb: https://git.kernel.org/tip/6b8cf5cc9965673951f1ab3f0e3cf23d06e3e2ee Author: Dan Williams <dan.j.williams(a)intel.com> AuthorDate: Mon, 5 Feb 2018 17:18:17 -0800 Committer: Ingo Molnar <mingo(a)kernel.org> CommitDate: Tue, 6 Feb 2018 11:47:57 +0100 x86/entry/64/compat: Clear registers for compat syscalls, to reduce speculation attack surface At entry userspace may have populated registers with values that could otherwise be useful in a speculative execution attack. Clear them to minimize the kernel's attack surface. Originally-From: Andi Kleen <ak(a)linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams(a)intel.com> Cc: <stable(a)vger.kernel.org> Cc: Andy Lutomirski <luto(a)kernel.org> Cc: Borislav Petkov <bp(a)alien8.de> Cc: Brian Gerst <brgerst(a)gmail.com> Cc: Denys Vlasenko <dvlasenk(a)redhat.com> Cc: H. Peter Anvin <hpa(a)zytor.com> Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Thomas Gleixner <tglx(a)linutronix.de> Link: http://lkml.kernel.org/r/151787989697.7847.4083702787288600552.stgit@dwilli… [ Made small improvements to the changelog. ] Signed-off-by: Ingo Molnar <mingo(a)kernel.org> --- arch/x86/entry/entry_64_compat.S | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/arch/x86/entry/entry_64_compat.S b/arch/x86/entry/entry_64_compat.S index 98d5358..fd65e01 100644 --- a/arch/x86/entry/entry_64_compat.S +++ b/arch/x86/entry/entry_64_compat.S @@ -85,15 +85,25 @@ ENTRY(entry_SYSENTER_compat) pushq %rcx /* pt_regs->cx */ pushq $-ENOSYS /* pt_regs->ax */ pushq $0 /* pt_regs->r8 = 0 */ + xorq %r8, %r8 /* nospec r8 */ pushq $0 /* pt_regs->r9 = 0 */ + xorq %r9, %r9 /* nospec r9 */ pushq $0 /* pt_regs->r10 = 0 */ + xorq %r10, %r10 /* nospec r10 */ pushq $0 /* pt_regs->r11 = 0 */ + xorq %r11, %r11 /* nospec r11 */ pushq %rbx /* pt_regs->rbx */ + xorl %ebx, %ebx /* nospec rbx */ pushq %rbp /* pt_regs->rbp (will be overwritten) */ + xorl %ebp, %ebp /* nospec rbp */ pushq $0 /* pt_regs->r12 = 0 */ + xorq %r12, %r12 /* nospec r12 */ pushq $0 /* pt_regs->r13 = 0 */ + xorq %r13, %r13 /* nospec r13 */ pushq $0 /* pt_regs->r14 = 0 */ + xorq %r14, %r14 /* nospec r14 */ pushq $0 /* pt_regs->r15 = 0 */ + xorq %r15, %r15 /* nospec r15 */ cld /* @@ -214,15 +224,25 @@ GLOBAL(entry_SYSCALL_compat_after_hwframe) pushq %rbp /* pt_regs->cx (stashed in bp) */ pushq $-ENOSYS /* pt_regs->ax */ pushq $0 /* pt_regs->r8 = 0 */ + xorq %r8, %r8 /* nospec r8 */ pushq $0 /* pt_regs->r9 = 0 */ + xorq %r9, %r9 /* nospec r9 */ pushq $0 /* pt_regs->r10 = 0 */ + xorq %r10, %r10 /* nospec r10 */ pushq $0 /* pt_regs->r11 = 0 */ + xorq %r11, %r11 /* nospec r11 */ pushq %rbx /* pt_regs->rbx */ + xorl %ebx, %ebx /* nospec rbx */ pushq %rbp /* pt_regs->rbp (will be overwritten) */ + xorl %ebp, %ebp /* nospec rbp */ pushq $0 /* pt_regs->r12 = 0 */ + xorq %r12, %r12 /* nospec r12 */ pushq $0 /* pt_regs->r13 = 0 */ + xorq %r13, %r13 /* nospec r13 */ pushq $0 /* pt_regs->r14 = 0 */ + xorq %r14, %r14 /* nospec r14 */ pushq $0 /* pt_regs->r15 = 0 */ + xorq %r15, %r15 /* nospec r15 */ /* * User mode is traced as though IRQs are on, and SYSENTER @@ -338,15 +358,25 @@ ENTRY(entry_INT80_compat) pushq %rcx /* pt_regs->cx */ pushq $-ENOSYS /* pt_regs->ax */ pushq $0 /* pt_regs->r8 = 0 */ + xorq %r8, %r8 /* nospec r8 */ pushq $0 /* pt_regs->r9 = 0 */ + xorq %r9, %r9 /* nospec r9 */ pushq $0 /* pt_regs->r10 = 0 */ + xorq %r10, %r10 /* nospec r10 */ pushq $0 /* pt_regs->r11 = 0 */ + xorq %r11, %r11 /* nospec r11 */ pushq %rbx /* pt_regs->rbx */ + xorl %ebx, %ebx /* nospec rbx */ pushq %rbp /* pt_regs->rbp */ + xorl %ebp, %ebp /* nospec rbp */ pushq %r12 /* pt_regs->r12 */ + xorq %r12, %r12 /* nospec r12 */ pushq %r13 /* pt_regs->r13 */ + xorq %r13, %r13 /* nospec r13 */ pushq %r14 /* pt_regs->r14 */ + xorq %r14, %r14 /* nospec r14 */ pushq %r15 /* pt_regs->r15 */ + xorq %r15, %r15 /* nospec r15 */ cld /*

7 years, 4 months

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