mirror of https://gitee.com/openkylin/linux.git
949315 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Dave Airlie
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6284a41803 |
Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm-fixes
Two fixes: One fixes a bad interaction with the DRM scheduler, leading to some dma fences not getting signalled after hitting the job timeout. The other one fixes a GPU init regression, as apparently one old core doesn't likes us reading some of the identification registers. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Lucas Stach <l.stach@pengutronix.de> Link: https://patchwork.freedesktop.org/patch/msgid/aceebfe3af636346f5252bdf727cdd988bdcbdf2.camel@pengutronix.de |
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Dave Airlie
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234a2c42fd |
One fixup
- Just drop __iommu annotation to fix sparse warning. -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEaNgt5qhas/jh16fIAgVwiH27uaUFAl9GC1UACgkQAgVwiH27 uaWD1Av/YYJ06v9Jvh2yi8/Aj9bHOGlrWKRFHv2IcF8qB+BJSAtUm+nYQOaM+gBk 40oz0ajAquYdLc3xRcICDLfYg8exK+LV4H6SdiiVKHqbTIqSGPv57CWBjC6QQblq 1NDQvKbR0DlhqtCF+pPtvy5rgl3Qygmgo192eeqGjm8dVkpPJYrAWmaEof0GvqEL iLMmTndEn0GSNMYftU/NaAx8Q3G6ADNvCo8Ihd84NwhJppnXTCQL2cPZ4DktgIt2 XQUwTeHkbVh7df+zxPsVztQn2W8rCDD7FBeM1+oM5BdYxn4jlYRpbDMAVnn5stCY PTSINLAek928JephpSeo9mTDfAhBgydWZv/hQCmyueD8/3QeJAzPUWSp8bb04ygK JjBdJmxFx4UM+31IRSz4LFZTOw+kWELjGg6W1xhIaYmcBqq9pSusT/30vWmyFr5G wDxGNUeaDug0j7iwdWxVn/alDbSb81pNsjcNcs+NyUHFFYrckWfiZdFh6V2BViDz MGJK95Ny =+mR+ -----END PGP SIGNATURE----- Merge tag 'exynos-drm-fixes-v5.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes One fixup - Just drop __iommu annotation to fix sparse warning. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Inki Dae <daeinki@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200826071520.3140-1-daeinki@gmail.com |
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Marek Szyprowski
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d4035d1043
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drm/exynos: gem: Fix sparse warning
kvaddr element of the exynos_gem object points to a memory buffer, thus it should not have a __iomem annotation. Then, to avoid a warning or casting on assignment to fbi structure, the screen_buffer element of the union should be used instead of the screen_base. Reported-by: kernel test robot <lkp@intel.com> Suggested-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Inki Dae <inki.dae@samsung.com> |
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Lucas Stach
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50248a3ec0 |
drm/etnaviv: always start/stop scheduler in timeout processing
The drm scheduler currently expects that the stop/start sequence is always
executed in the timeout handling, as the job at the head of the hardware
execution list is always removed from the ring mirror before the driver
function is called and only inserted back into the list when starting the
scheduler.
This adds some unnecessary overhead if the timeout handler determines
that the GPU is still executing jobs normally and just wished to extend
the timeout, but a better solution requires a major rearchitecture of the
scheduler, which is not applicable as a fix.
Fixes:
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Christian Gmeiner
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2c5bf028ef |
drm/etnaviv: fix external abort seen on GC600 rev 0x19
It looks like that this GPU core triggers an abort when
reading VIVS_HI_CHIP_PRODUCT_ID and/or VIVS_HI_CHIP_ECO_ID.
I looked at different versions of Vivante's kernel driver and did
not found anything about this issue or what feature flag can be
used. So go the simplest route and do not read these two registers
on the affected GPU core.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reported-by: Josua Mayer <josua.mayer@jm0.eu>
Fixes:
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Linus Torvalds
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d012a7190f | Linux 5.9-rc2 | |
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Linus Torvalds
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cb95712138 |
powerpc fixes for 5.9 #3
Add perf support for emitting extended registers for power10. A fix for CPU hotplug on pseries, where on large/loaded systems we may not wait long enough for the CPU to be offlined, leading to crashes. Addition of a raw cputable entry for Power10, which is not required to boot, but is required to make our PMU setup work correctly in guests. Three fixes for the recent changes on 32-bit Book3S to move modules into their own segment for strict RWX. A fix for a recent change in our powernv PCI code that could lead to crashes. A change to our perf interrupt accounting to avoid soft lockups when using some events, found by syzkaller. A change in the way we handle power loss events from the hypervisor on pseries. We no longer immediately shut down if we're told we're running on a UPS. A few other minor fixes. Thanks to: Alexey Kardashevskiy, Andreas Schwab, Aneesh Kumar K.V, Anju T Sudhakar, Athira Rajeev, Christophe Leroy, Frederic Barrat, Greg Kurz, Kajol Jain, Madhavan Srinivasan, Michael Neuling, Michael Roth, Nageswara R Sastry, Oliver O'Halloran, Thiago Jung Bauermann, Vaidyanathan Srinivasan, Vasant Hegde. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAl9CYMwTHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgC/wEACljEVnfHzUObmIgqn9Ru3JlfEI6Hlk ts7kajCgS/I/bV6DoDMZ8rlZX87QFOwiBkNM1I+vGHSLAuzsmFAnbFPyxw/idxpQ XUoNy8OCvbbzCPzChYdiU0PxW2h2i+QxkmktlWSN1SAPudJUWvoPS2Y4+sC4zksk B4B6tbW2DT8TFO1kKeZsU9r2t+EH5KwlIOi+uxbH8d76lJINKkBNSnjzMytl7drM TZx/HWr8+s/WJo1787x6bv8gxs5tV9b4vIKt2YZNTY2kvYsEDE+fBR1XfCAneXMw ASYnZV+/xCLIUpRF6DI4RAShLBT/Sfiy1yMTndZgfqAgquokFosszNx2zrk0IzCd AgqX93YGbGz/H72W3Y/B0W9+74XyO/u2D9zhNpkCRMpdcsM5MbvOQrQA5Ustu47E av5MOaF/nNCd8J+OC4Qjgt5VFb/s0h4FdtrwT80srOa2U6Of9cD/T6xAfOszSJ96 cWdSb5qhn5wuD9pP32KjwdmWBiUw38/gnRGKpRlOVzyHL/GKZijyaBbWBlkoEmty 0nbjWW/IVfsOb5Weuiybg541h/QOVuOkb2pOvPClITiH83MY/AciDJ+auo4M//hW haKz9IgV/KctmzDE+v9d0BD8sGmW03YUcQAPdRufI0eGXijDLcnHeuk2B3Nu84Pq 8mtev+VQ+T6cZA== =sdJ1 -----END PGP SIGNATURE----- Merge tag 'powerpc-5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Add perf support for emitting extended registers for power10. - A fix for CPU hotplug on pseries, where on large/loaded systems we may not wait long enough for the CPU to be offlined, leading to crashes. - Addition of a raw cputable entry for Power10, which is not required to boot, but is required to make our PMU setup work correctly in guests. - Three fixes for the recent changes on 32-bit Book3S to move modules into their own segment for strict RWX. - A fix for a recent change in our powernv PCI code that could lead to crashes. - A change to our perf interrupt accounting to avoid soft lockups when using some events, found by syzkaller. - A change in the way we handle power loss events from the hypervisor on pseries. We no longer immediately shut down if we're told we're running on a UPS. - A few other minor fixes. Thanks to Alexey Kardashevskiy, Andreas Schwab, Aneesh Kumar K.V, Anju T Sudhakar, Athira Rajeev, Christophe Leroy, Frederic Barrat, Greg Kurz, Kajol Jain, Madhavan Srinivasan, Michael Neuling, Michael Roth, Nageswara R Sastry, Oliver O'Halloran, Thiago Jung Bauermann, Vaidyanathan Srinivasan, Vasant Hegde. * tag 'powerpc-5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/perf/hv-24x7: Move cpumask file to top folder of hv-24x7 driver powerpc/32s: Fix module loading failure when VMALLOC_END is over 0xf0000000 powerpc/pseries: Do not initiate shutdown when system is running on UPS powerpc/perf: Fix soft lockups due to missed interrupt accounting powerpc/powernv/pci: Fix possible crash when releasing DMA resources powerpc/pseries/hotplug-cpu: wait indefinitely for vCPU death powerpc/32s: Fix is_module_segment() when MODULES_VADDR is defined powerpc/kasan: Fix KASAN_SHADOW_START on BOOK3S_32 powerpc/fixmap: Fix the size of the early debug area powerpc/pkeys: Fix build error with PPC_MEM_KEYS disabled powerpc/kernel: Cleanup machine check function declarations powerpc: Add POWER10 raw mode cputable entry powerpc/perf: Add extended regs support for power10 platform powerpc/perf: Add support for outputting extended regs in perf intr_regs powerpc: Fix P10 PVR revision in /proc/cpuinfo for SMT4 cores |
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Linus Torvalds
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550c2129d9 |
A single fix for x86 which removes the RDPID usage from the paranoid entry
path and unconditionally uses LSL to retrieve the CPU number. RDPID depends on MSR_TSX_AUX. KVM has an optmization to avoid expensive MRS read/writes on VMENTER/EXIT. It caches the MSR values and restores them either when leaving the run loop, on preemption or when going out to user space. MSR_TSX_AUX is part of that lazy MSR set, so after writing the guest value and before the lazy restore any exception using the paranoid entry will read the guest value and use it as CPU number to retrieve the GSBASE value for the current CPU when FSGSBASE is enabled. As RDPID is only used in that particular entry path, there is no reason to burden VMENTER/EXIT with two extra MSR writes. Remove the RDPID optimization, which is not even backed by numbers from the paranoid entry path instead. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl9CJqgTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoaAvD/sHkSx1V0hupUh9budLhSPhUyWvXiar AmAvWl8dKEFG2UOhOT57zD6DgFN3uu5rqjxTG7ha9XEspsVaP5jOji4evus37IAe z2EB9J5c3ih4VSdaM+8ODTMls5rjQrvJjeDV0ETTQ9Xb+FOT0vNAub6D5PVms6J3 FObDKiIpdB3s5INAWPknIYves0EJP5BP3+gOktovMStfcy8tm8N9S/yA4cNL4nbi IZ0h1H6xcGrQ79dv+2/vC0cdqlbm6y2KWfNKpSTGwPMdRl0PpHrovsOVPKF+6pio Ad230t7xnWMlrHghbSvDyyJ67/N6AA6CaqHECWtgsDuzbqcD2MoQ2l97atoZInh7 83n8ZWFaw10T4ksw9SWqAex+ZJh6/rD4vcQYUncPN66/kOVM186ezICc+QsPV99s ukw29xge4uHz91Hy0Bo8SP+w1bvntKJn6XyJuTFgDt8bmFRIeajSxyOGw7hTs+ZD TONw9dMeteWZhZRIXYDjlYc83xFYGkX6hmxLrDJ4jg8UGojaca83s7oZtxgZxWzu L9wfCRJIEA33ihvqtbTEOHbJvl6eyDt8b/kBGGHbAbqweQ3mWEH3WDQ5cyhlLrfA tnDToX1DvsxfVg94saprNt249qHNZlFIj8EaGfjxxEngd8xAgfU0vxJpI8sBtdsw SMIwyLLbLz573A== =AEel -----END PGP SIGNATURE----- Merge tag 'x86-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Thomas Gleixner: "A single fix for x86 which removes the RDPID usage from the paranoid entry path and unconditionally uses LSL to retrieve the CPU number. RDPID depends on MSR_TSX_AUX. KVM has an optmization to avoid expensive MRS read/writes on VMENTER/EXIT. It caches the MSR values and restores them either when leaving the run loop, on preemption or when going out to user space. MSR_TSX_AUX is part of that lazy MSR set, so after writing the guest value and before the lazy restore any exception using the paranoid entry will read the guest value and use it as CPU number to retrieve the GSBASE value for the current CPU when FSGSBASE is enabled. As RDPID is only used in that particular entry path, there is no reason to burden VMENTER/EXIT with two extra MSR writes. Remove the RDPID optimization, which is not even backed by numbers from the paranoid entry path instead" * tag 'x86-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/entry/64: Do not use RDPID in paranoid entry to accomodate KVM |
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Linus Torvalds
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cea05c192b |
A single update for perf on x86 which ass support for the
broken down bandwith counters. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl9CJSkTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoUmoD/9xdmi6Pi8cqsN61zoqzDMygyd45rYH x9oe1QOYHPBp7fIEv0EeG/HcZpBG23Oyj7XnAGZlUuSzHzRYSK3ceQHqo0VEP7qv ZrPzBJCI+wx/zVBFN62IbSZmZF3omBjo+TKT1bTKmDRov+qovAEcD040Vt45SkW2 NKiD/u2iJemLrF9g7KKgNCv+alqGAeH6YzZpWgFycP550psIF3WgIY2eMjSY9+XD i7DrEg/OWY5vvCYbHBxrbhvqkXlhyMzw0jqWJtRHTIPRjMuDCM9yef5KiCExPdFX e+rE+O2gp/9xMEcAvi4SK3s1QUe0wjq+e7stNiOKrBhNA0CNhvJxAmIBO2y4Bi5+ BKJelWt0vDDxCiQgW9mctq0rvu8KM6C3w6AgKWiQNbirVLKHNdx4AvF5SNWGVRhf ZGMVaFlpwuuTZfahbdmwi88j6968h8izjkQeQ2gZMXEOgv8P/Df+C9IcHH/HxEgI OwW6htpU3LeOSbEu9201AJqjqAtpXxYzodBWuGWLF7+BF6NACciITQPApkYvWGPN bKol/kbX52ZRzBEEUHWfrIred7KPH/2UZltPz6Fo5wwuuI2zKBYecIN/vWppzITH uj5sq2UVAdRQy8/9wKys1bu0uVhlILVa/KTYuf+9cuCWGELfRTN5iHaKviUEEFWB aVfI8o2ThyQyvQ== =vF1u -----END PGP SIGNATURE----- Merge tag 'perf-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 perf fix from Thomas Gleixner: "A single update for perf on x86 which has support for the broken down bandwith counters" * tag 'perf-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel/uncore: Add BW counters for GT, IA and IO breakdown |
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Linus Torvalds
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10c091b62e |
A set of EFI fixes:
- Enforce NX on RO data in mixed EFI mode
- Destroy workqueue in an error handling path to prevent UAF
- Stop argument parser at '--' which is the delimiter for init
- Treat a NULL command line pointer as empty instead of dereferncing it
unconditionally.
- Handle an unterminated command line correctly
- Cleanup the 32bit code leftovers and remove obsolete documentation
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Merge tag 'efi-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Thomas Gleixner:
- Enforce NX on RO data in mixed EFI mode
- Destroy workqueue in an error handling path to prevent UAF
- Stop argument parser at '--' which is the delimiter for init
- Treat a NULL command line pointer as empty instead of dereferncing it
unconditionally.
- Handle an unterminated command line correctly
- Cleanup the 32bit code leftovers and remove obsolete documentation
* tag 'efi-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation: efi: remove description of efi=old_map
efi/x86: Move 32-bit code into efi_32.c
efi/libstub: Handle unterminated cmdline
efi/libstub: Handle NULL cmdline
efi/libstub: Stop parsing arguments at "--"
efi: add missed destroy_workqueue when efisubsys_init fails
efi/x86: Mark kernel rodata non-executable for mixed mode
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Linus Torvalds
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e99b2507ba |
A single bug fix for the common entry code. The transcript of the x86
version messed up the reload of the syscall number from pt_regs after ptrace and seccomp which breaks syscall number rewriting. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl9CI6YTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoQCvEACoc8+Nd3sFR1UoNASbu5DV6PkUmgGy eQLKUA42toTzqJIcyXPRAjBrRc51IFEaxZlqGC7KWjQM9d9cdJGylg4zfwspZoI+ tsvYKCPxvswVJ09QZmibn35+dbJEiYtQ96Cq0BQx/kaaouNeceRtDXV2ptP9dPSx pyv3pb8nchjADcKrqbMYe8t647X1kM25BglbTkHOJZDSubEsgMbN6P3d70n2sNO6 8jQC4o9DX2AJnN5K3tLyN1yoLUYKUdFlj6X2BgusK8HbBVQ2m7eTPaIT2aNGs648 7CrY49ggFnr8BVJuhIvjAwdyJPcTm9rcWphfD+WBAWrVO7r205aKAINDsoZwrhBe 4ykfhs2PzfvHMrqKfKfbfNDQu9p6ZWwh3ZLbUpbunZQPCFB8EwL1x/5O/pGWGCNF F4rvfh02BuRPTljjM0pXFx05etT/OKKHjgdB7vxKJzb52dxcIZqqbut+lcTCYAmS n2M2H/Tgt4NgJsu4dgGamL6JNvHf1JUhyWVB2ZfRLvGMiiEDmyttct2E1Ji+AVqZ Dufui4KajQda+bS6VjCLtBNjC5WJ3gOzpIa4nrRw8mlTGWCgRGjsqu/Ze0Fkds6X r6WT4NzJ4pD3E/bXpbegf0eikLIx+sEfiLpJGbuQ+stD52/AQjef1oaLDmmiPXKY Ep+yR6l58erLbg== =2OhI -----END PGP SIGNATURE----- Merge tag 'core-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull entry fix from Thomas Gleixner: "A single bug fix for the common entry code. The transcription of the x86 version messed up the reload of the syscall number from pt_regs after ptrace and seccomp which breaks syscall number rewriting" * tag 'core-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: core/entry: Respect syscall number rewrites |
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Linus Torvalds
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d9232cb796 |
A single fix correcting a reversed error severity determination check
which lead to a recoverable error getting marked as fatal, by Tony
Luck.
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Merge tag 'edac_urgent_for_v5.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fix from Borislav Petkov:
"A single fix correcting a reversed error severity determination check
which lead to a recoverable error getting marked as fatal, by Tony
Luck"
* tag 'edac_urgent_for_v5.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/{i7core,sb,pnd2,skx}: Fix error event severity
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Linus Torvalds
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9d045ed1eb |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from David Miller:
"Nothing earth shattering here, lots of small fixes (f.e. missing RCU
protection, bad ref counting, missing memset(), etc.) all over the
place:
1) Use get_file_rcu() in task_file iterator, from Yonghong Song.
2) There are two ways to set remote source MAC addresses in macvlan
driver, but only one of which validates things properly. Fix this.
From Alvin Šipraga.
3) Missing of_node_put() in gianfar probing, from Sumera
Priyadarsini.
4) Preserve device wanted feature bits across multiple netlink
ethtool requests, from Maxim Mikityanskiy.
5) Fix rcu_sched stall in task and task_file bpf iterators, from
Yonghong Song.
6) Avoid reset after device destroy in ena driver, from Shay
Agroskin.
7) Missing memset() in netlink policy export reallocation path, from
Johannes Berg.
8) Fix info leak in __smc_diag_dump(), from Peilin Ye.
9) Decapsulate ECN properly for ipv6 in ipv4 tunnels, from Mark
Tomlinson.
10) Fix number of data stream negotiation in SCTP, from David Laight.
11) Fix double free in connection tracker action module, from Alaa
Hleihel.
12) Don't allow empty NHA_GROUP attributes, from Nikolay Aleksandrov"
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (46 commits)
net: nexthop: don't allow empty NHA_GROUP
bpf: Fix two typos in uapi/linux/bpf.h
net: dsa: b53: check for timeout
tipc: call rcu_read_lock() in tipc_aead_encrypt_done()
net/sched: act_ct: Fix skb double-free in tcf_ct_handle_fragments() error flow
net: sctp: Fix negotiation of the number of data streams.
dt-bindings: net: renesas, ether: Improve schema validation
gre6: Fix reception with IP6_TNL_F_RCV_DSCP_COPY
hv_netvsc: Fix the queue_mapping in netvsc_vf_xmit()
hv_netvsc: Remove "unlikely" from netvsc_select_queue
bpf: selftests: global_funcs: Check err_str before strstr
bpf: xdp: Fix XDP mode when no mode flags specified
selftests/bpf: Remove test_align leftovers
tools/resolve_btfids: Fix sections with wrong alignment
net/smc: Prevent kernel-infoleak in __smc_diag_dump()
sfc: fix build warnings on 32-bit
net: phy: mscc: Fix a couple of spelling mistakes "spcified" -> "specified"
libbpf: Fix map index used in error message
net: gemini: Fix missing free_netdev() in error path of gemini_ethernet_port_probe()
net: atlantic: Use readx_poll_timeout() for large timeout
...
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Linus Torvalds
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f320ac6e13 |
Merge branch 'work.epoll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull epoll fixes from Al Viro: "Fix reference counting and clean up exit paths" * 'work.epoll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: do_epoll_ctl(): clean the failure exits up a bit epoll: Keep a reference on files added to the check list |
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Al Viro
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52c479697c |
do_epoll_ctl(): clean the failure exits up a bit
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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Marc Zyngier
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a9ed4a6560 |
epoll: Keep a reference on files added to the check list
When adding a new fd to an epoll, and that this new fd is an epoll fd itself, we recursively scan the fds attached to it to detect cycles, and add non-epool files to a "check list" that gets subsequently parsed. However, this check list isn't completely safe when deletions can happen concurrently. To sidestep the issue, make sure that a struct file placed on the check list sees its f_count increased, ensuring that a concurrent deletion won't result in the file disapearing from under our feet. Cc: stable@vger.kernel.org Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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Nikolay Aleksandrov
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eeaac3634e |
net: nexthop: don't allow empty NHA_GROUP
Currently the nexthop code will use an empty NHA_GROUP attribute, but it
requires at least 1 entry in order to function properly. Otherwise we
end up derefencing null or random pointers all over the place due to not
having any nh_grp_entry members allocated, nexthop code relies on having at
least the first member present. Empty NHA_GROUP doesn't make any sense so
just disallow it.
Also add a WARN_ON for any future users of nexthop_create_group().
BUG: kernel NULL pointer dereference, address: 0000000000000080
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] SMP
CPU: 0 PID: 558 Comm: ip Not tainted 5.9.0-rc1+ #93
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-2.fc32 04/01/2014
RIP: 0010:fib_check_nexthop+0x4a/0xaa
Code: 0f 84 83 00 00 00 48 c7 02 80 03 f7 81 c3 40 80 fe fe 75 12 b8 ea ff ff ff 48 85 d2 74 6b 48 c7 02 40 03 f7 81 c3 48 8b 40 10 <48> 8b 80 80 00 00 00 eb 36 80 78 1a 00 74 12 b8 ea ff ff ff 48 85
RSP: 0018:ffff88807983ba00 EFLAGS: 00010213
RAX: 0000000000000000 RBX: ffff88807983bc00 RCX: 0000000000000000
RDX: ffff88807983bc00 RSI: 0000000000000000 RDI: ffff88807bdd0a80
RBP: ffff88807983baf8 R08: 0000000000000dc0 R09: 000000000000040a
R10: 0000000000000000 R11: ffff88807bdd0ae8 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88807bea3100 R15: 0000000000000001
FS: 00007f10db393700(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000080 CR3: 000000007bd0f004 CR4: 00000000003706f0
Call Trace:
fib_create_info+0x64d/0xaf7
fib_table_insert+0xf6/0x581
? __vma_adjust+0x3b6/0x4d4
inet_rtm_newroute+0x56/0x70
rtnetlink_rcv_msg+0x1e3/0x20d
? rtnl_calcit.isra.0+0xb8/0xb8
netlink_rcv_skb+0x5b/0xac
netlink_unicast+0xfa/0x17b
netlink_sendmsg+0x334/0x353
sock_sendmsg_nosec+0xf/0x3f
____sys_sendmsg+0x1a0/0x1fc
? copy_msghdr_from_user+0x4c/0x61
___sys_sendmsg+0x63/0x84
? handle_mm_fault+0xa39/0x11b5
? sockfd_lookup_light+0x72/0x9a
__sys_sendmsg+0x50/0x6e
do_syscall_64+0x54/0xbe
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f10dacc0bb7
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb cd 66 0f 1f 44 00 00 8b 05 9a 4b 2b 00 85 c0 75 2e 48 63 ff 48 63 d2 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 b1 f2 2a 00 f7 d8 64 89 02 48
RSP: 002b:00007ffcbe628bf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ffcbe628f80 RCX: 00007f10dacc0bb7
RDX: 0000000000000000 RSI: 00007ffcbe628c60 RDI: 0000000000000003
RBP: 000000005f41099c R08: 0000000000000001 R09: 0000000000000008
R10: 00000000000005e9 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffcbe628d70 R15: 0000563a86c6e440
Modules linked in:
CR2: 0000000000000080
CC: David Ahern <dsahern@gmail.com>
Fixes:
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Linus Torvalds
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c3d8f220d0 |
Kbuild fixes for v5.9
- move -Wsign-compare warning from W=2 to W=3 - fix the keyword _restrict to __restrict in genksyms - fix more bugs in qconf -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAl9BIv8VHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsGgUgQAKvWTNNvrY0YEY5YrFjh5swT/bBs 9YfYdrEe7MOkmUtIf0DemwzdmaiZmLSGLAZZNfMEElLdk4bofi13uznh/7M/Yd7H Vws7qeQDypRYxieUhrQMubpxoK/ZFPb89x+zX9LlFO9nB1/810iMVJkrysSbVDDU QnQWcKIa7X+narruX3DWz5I9FxarODXTIVLz4mR29z7xo1UGfuGuLlH3/mmGLaCt kmVnDs0eEFpRt1y70plZ5YZqhFV3619LvRQW8RwJgVXEPzXb5FaWhoJnfIlLgcJb epZ0miZgTMAugqryfD0cyqAImNglQTkfhXtmWJR5g77qrqwqHkSi/xnMHhbEP499 h/GwUmmfUzcjwJJlCzfLE1tuSPRgOvoy6Yp/6T0f+rCVhr8EyZ15BG0qDF3leHY9 Wlz6CdnRvmBKicMyK6MhH0MFWGmE4h2XM7eCMkVYG6u7WiDxC/FjCYI/73I2632t YXeMevAtXfNM5J0TOk1zzUeIordan4s5J5ddlRCRd7GMMmqq5BnfuNI+B9n5Npev 6g+XerkCreHEgOX1HSAj1SYmSykHjIyIl5AmWwRJEvRlxMKuNPPvar0oJqSUlJ7j HPsKAhdl+dlKCxKmz7e3nyfkc5IfMrMAfc6dD9/DAxggWBTeCU0UgaB0ZrFkHMdm yx4fimZilwKm3wUA =bySb -----END PGP SIGNATURE----- Merge tag 'kbuild-fixes-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - move -Wsign-compare warning from W=2 to W=3 - fix the keyword _restrict to __restrict in genksyms - fix more bugs in qconf * tag 'kbuild-fixes-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kconfig: qconf: replace deprecated QString::sprintf() with QTextStream kconfig: qconf: remove redundant help in the info view kconfig: qconf: remove qInfo() to get back Qt4 support kconfig: qconf: remove unused colNr kconfig: qconf: fix the popup menu in the ConfigInfoView window kconfig: qconf: fix signal connection to invalid slots genksyms: keywords: Use __restrict not _restrict kbuild: remove redundant patterns in filter/filter-out extract-cert: add static to local data Makefile.extrawarn: Move sign-compare from W=2 to W=3 |
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Linus Torvalds
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dd105d64a0 |
- Allow booting of late secondary CPUs affected by erratum 1418040
(currently they are parked if none of the early CPUs are affected by this erratum). - Add the 32-bit vdso Makefile to the vdso_install rule so that 'make vdso_install' installs the 32-bit compat vdso when it is compiled. - Print a warning that untrusted guests without a CPU erratum workaround (Cortex-A57 832075) may deadlock the affected system. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAl9BOb8ACgkQa9axLQDI XvFnixAAladNjLswpC8gm0PSv2fXD+OJU7XiJKl1McG0UcnkRp1brgruOi7WMyQg I0cbY6Kjfb6mFJaHfEA9uuQ0P44FGmI+gz+3Injl+a0qJgdu0QLU1uJQG/Rae+zG kdoimf+/CnLnJTiIA5YXsdrFhSQsn2lVConJx26QrSJO0SB0TROy86aRSrRSMyYy mXrK4xCm/cx4LqJQJrFmShpgs/IjuK8T/LZBInjgB43e3y++SHwGTSA2kf3NOldz Rx4HqQVJ37IeROZ8B2v8MggZsTk/5C+DaxJu6QBk7REDKPnI9+RAr3BhPUAAVWDn BONYtsjBLgf/Q9bmXNsHlGAhjIIeOAgaIIr10oVhSFScCHsjEU15hqyNP2jfgLSC Q4cgU8bA0sm36CHNI0vd5phAnMBN6HJZtmSzu2xb/GJKYW4yiuXupYiOWbBAhhiu uAFjMRW+dwfOXY/59kwpmedBZ0WvHod2mPhp3n4FRzo3X0NfRgHzgg1kDRwqVAzv eh8ynUYMjuy5H3siNR0279M6epIK/hTtqSvnzIqkCTBkftsYX+32v4UzEardRGiv +/gKJ1XQGmWD3OCISuMZwaRK+tH5V68eT+3P0gGmssJLYMtRJFzzVtuv3mz1yXRD USsww/SY2etlGU+N8r+66NSqU0KPRdQ0tkK6eCX8DTyl3MPLQfQ= =VkR3 -----END PGP SIGNATURE----- Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: - Allow booting of late secondary CPUs affected by erratum |
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Linus Torvalds
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d57ce84004 |
s390 fixes for 5.9-rc2
- Couple of fixes for storage key handling relevant for debugging. - Add cond_resched into potentially slow subchannels scanning loop. - Fixes for PF/VF linking and to ignore stale PCI configuration request events. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAl9BDkAACgkQjYWKoQLX FBhF3gf+KmVa7/Eb9Z0jE6dS1op5mggBASIMk7wr/enwSBQ7bLa42iGQPP9b7lWu 5FTLifmrelVIAadDjFU7+vfBYY4CtTg+KvaajlJeAe4QScND+KN3G7LkT+kRnqxy n6evcW19yKKos2I+cVlqL0QxOXQBsQFM7wmpOrf373OBRqDyJAkV1DjcLopPZr8I eMaKyhlLMoyxaoXkddk+RC417aIkuL900WaUMmdEkREIhawWbuyKoWqypk76CXih Jtxgi1nSCX7nSVUnrLHLl4xPdpBziQ3iqccliddysNEbLsaqrdWbiP8XAPBrI8na WxbFFOmHXTcTzhqpUDgyMv10fQtkBg== =bgLc -----END PGP SIGNATURE----- Merge tag 's390-5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Vasily Gorbik: - a couple of fixes for storage key handling relevant for debugging - add cond_resched into potentially slow subchannels scanning loop - fixes for PF/VF linking and to ignore stale PCI configuration request events * tag 's390-5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/pci: fix PF/VF linking on hot plug s390/pci: re-introduce zpci_remove_device() s390/pci: fix zpci_bus_link_virtfn() s390/ptrace: fix storage key handling s390/runtime_instrumentation: fix storage key handling s390/pci: ignore stale configuration request event s390/cio: add cond_resched() in the slow_eval_known_fn() loop |
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Linus Torvalds
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b2d9e99622 |
* PAE and PKU bugfixes for x86
* selftests fix for new binutils * MMU notifier fix for arm64 -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAl9ARnoUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroP2YAf/dgLrPm4y4jxm7Aiz3/txqrHEwogT ZtvnzqUPb6+vkFrkop8QMOPw7A8NCfkn3/6sWbyUN5ObgOG1pxKyPraeN3ZdsDoR KGwv6P0dKgI8B4UuGEMe9GazXv+oOv8+bSUJnE+HZiUHzJKlX4HJbxDwUhvSSatY qYCZb/Uzqundh79TYULa7oI1/3F15A2J1zQPe4QgkToH9tsVB8PVfkH5uPJPp64M DTm5+qgwwsBULFaAuuo3FTs9f3pWJxn8GOuico1Sm+RnR53mhbUJggUfFzP0rwzZ Emevunje5r1rluFs+JWeNtflGH0gI4CLak7jvlOOBjrNb5XJgUSbzLXxkA== =Jwic -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull kvm fixes from Paolo Bonzini: - PAE and PKU bugfixes for x86 - selftests fix for new binutils - MMU notifier fix for arm64 * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: arm64: Only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is not set KVM: Pass MMU notifier range flags to kvm_unmap_hva_range() kvm: x86: Toggling CR4.PKE does not load PDPTEs in PAE mode kvm: x86: Toggling CR4.SMAP does not load PDPTEs in PAE mode KVM: x86: fix access code passed to gva_to_gpa selftests: kvm: Use a shorter encoding to clear RAX |
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Linus Torvalds
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9e574b74b7 |
SCSI fixes on 20200821
23 fixes in 5 drivers (qla2xxx, ufs, scsi_debug, fcoe, zfcp). The bulk of the changes are in qla2xxx and ufs and all are mostly small and definitely don't impact the core. Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com> -----BEGIN PGP SIGNATURE----- iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCX0CxgiYcamFtZXMuYm90 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishVI9AP40cRrH p0wrE1fKUyj+LbtnWrrHUXsuknS3Sf58zyPeEAEA3qxxLspTxWgLuSnT/KC2gqFB Kv/XJyKM9CnRg7Uo4mo= =GRmA -----END PGP SIGNATURE----- Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "23 fixes in 5 drivers (qla2xxx, ufs, scsi_debug, fcoe, zfcp). The bulk of the changes are in qla2xxx and ufs and all are mostly small and definitely don't impact the core" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (23 commits) Revert "scsi: qla2xxx: Disable T10-DIF feature with FC-NVMe during probe" Revert "scsi: qla2xxx: Fix crash on qla2x00_mailbox_command" scsi: qla2xxx: Fix null pointer access during disconnect from subsystem scsi: qla2xxx: Check if FW supports MQ before enabling scsi: qla2xxx: Fix WARN_ON in qla_nvme_register_hba scsi: qla2xxx: Allow ql2xextended_error_logging special value 1 to be set anytime scsi: qla2xxx: Reduce noisy debug message scsi: qla2xxx: Fix login timeout scsi: qla2xxx: Indicate correct supported speeds for Mezz card scsi: qla2xxx: Flush I/O on zone disable scsi: qla2xxx: Flush all sessions on zone disable scsi: qla2xxx: Use MBX_TOV_SECONDS for mailbox command timeout values scsi: scsi_debug: Fix scp is NULL errors scsi: zfcp: Fix use-after-free in request timeout handlers scsi: ufs: No need to send Abort Task if the task in DB was cleared scsi: ufs: Clean up completed request without interrupt notification scsi: ufs: Improve interrupt handling for shared interrupts scsi: ufs: Fix interrupt error message for shared interrupts scsi: ufs-pci: Add quirk for broken auto-hibernate for Intel EHL scsi: ufs-mediatek: Fix incorrect time to wait link status ... |
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Linus Torvalds
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d6af633056 |
Devicetree fixes for v5.9, take 2:
- Restore range parsing error check
- Workaround PCI range parsing with missing 'device_type' now required
- Correct description of 'phy-connection-type'
- Fix erroneous matching on 'snps,dw-pcie' by 'intel,lgm-pcie' schema
- A couple of grammar and whitespace fixes
- Update Shawn Guo's email
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Merge tag 'devicetree-fixes-for-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
"Another set of DT fixes:
- restore range parsing error check
- workaround PCI range parsing with missing 'device_type' now
required
- correct description of 'phy-connection-type'
- fix erroneous matching on 'snps,dw-pcie' by 'intel,lgm-pcie' schema
- a couple of grammar and whitespace fixes
- update Shawn Guo's email"
* tag 'devicetree-fixes-for-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: vendor-prefixes: Remove trailing whitespace
dt-bindings: net: correct description of phy-connection-type
dt-bindings: PCI: intel,lgm-pcie: Fix matching on all snps,dw-pcie instances
of: address: Work around missing device_type property in pcie nodes
dt: writing-schema: Miscellaneous grammar fixes
dt-bindings: Use Shawn Guo's preferred e-mail for i.MX bindings
of/address: check for invalid range.cpu_addr
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Geert Uytterhoeven
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5cd841d267 |
dt-bindings: vendor-prefixes: Remove trailing whitespace
Fixes:
|
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Will Deacon
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b5331379bc |
KVM: arm64: Only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is not set
When an MMU notifier call results in unmapping a range that spans multiple
PGDs, we end up calling into cond_resched_lock() when crossing a PGD boundary,
since this avoids running into RCU stalls during VM teardown. Unfortunately,
if the VM is destroyed as a result of OOM, then blocking is not permitted
and the call to the scheduler triggers the following BUG():
| BUG: sleeping function called from invalid context at arch/arm64/kvm/mmu.c:394
| in_atomic(): 1, irqs_disabled(): 0, non_block: 1, pid: 36, name: oom_reaper
| INFO: lockdep is turned off.
| CPU: 3 PID: 36 Comm: oom_reaper Not tainted 5.8.0 #1
| Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015
| Call trace:
| dump_backtrace+0x0/0x284
| show_stack+0x1c/0x28
| dump_stack+0xf0/0x1a4
| ___might_sleep+0x2bc/0x2cc
| unmap_stage2_range+0x160/0x1ac
| kvm_unmap_hva_range+0x1a0/0x1c8
| kvm_mmu_notifier_invalidate_range_start+0x8c/0xf8
| __mmu_notifier_invalidate_range_start+0x218/0x31c
| mmu_notifier_invalidate_range_start_nonblock+0x78/0xb0
| __oom_reap_task_mm+0x128/0x268
| oom_reap_task+0xac/0x298
| oom_reaper+0x178/0x17c
| kthread+0x1e4/0x1fc
| ret_from_fork+0x10/0x30
Use the new 'flags' argument to kvm_unmap_hva_range() to ensure that we
only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is set in the notifier
flags.
Cc: <stable@vger.kernel.org>
Fixes:
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Will Deacon
|
fdfe7cbd58 |
KVM: Pass MMU notifier range flags to kvm_unmap_hva_range()
The 'flags' field of 'struct mmu_notifier_range' is used to indicate
whether invalidate_range_{start,end}() are permitted to block. In the
case of kvm_mmu_notifier_invalidate_range_start(), this field is not
forwarded on to the architecture-specific implementation of
kvm_unmap_hva_range() and therefore the backend cannot sensibly decide
whether or not to block.
Add an extra 'flags' parameter to kvm_unmap_hva_range() so that
architectures are aware as to whether or not they are permitted to block.
Cc: <stable@vger.kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Message-Id: <20200811102725.7121-2-will@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Madalin Bucur
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5f53584ce9 |
dt-bindings: net: correct description of phy-connection-type
The phy-connection-type parameter is described in ePAPR 1.1: Specifies interface type between the Ethernet device and a physical layer (PHY) device. The value of this property is specific to the implementation. Signed-off-by: Madalin Bucur <madalin.bucur@oss.nxp.com> Link: https://lore.kernel.org/r/1597917724-11127-1-git-send-email-madalin.bucur@oss.nxp.com Signed-off-by: Rob Herring <robh@kernel.org> |
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Linus Torvalds
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f873db9acd |
io_uring-5.9-2020-08-21
-----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl9AMgoQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpsqjEAC3hNnlu7BwVRFMeJzOyxZUqvvtT2ktYTZs 9duV7qezounq022nKihl0/wy0KWOxfg4HDT492la54nKYAPf6xhszrbuAUx9pW8Z pwcUccaci7nB29V4a4wedtxz+jegCN2LXbRNk4DOpchlVKULfrOIcfW5/rL/7gkp 15n/AAIZNChJ6y9dJDqYRoiF152/6uk7t+BolU/+W9QCKi2PW40nTOgfkzSnBvJV WaHlYHKAOUaiurIUjZQolgohNNBUzNwWtF/4HSeT5n8c94gSpI3IKFkmNCjxQQ96 I0gjJZIss7N8ysKFBy3WALqx9FqxSWS3pi/G9fai4o/VPEFj+fhfBTh+H1fzLaoM V+oOHMCt5Cwlw+n8vSgtUU0JF6ZnmoolfpHWPchtCJyQ42i/gt41MrePdu/tUC+n tV7wvftuM/+AN36vDDgbDc5BTKjCnRQSHz80M3EwUznJJjaeTAPxnQ+pVlpN9IS+ sbywlg+Xake9F19qA/astAH9n3U2+m3HdmoIXfG1vrXKFt/I9d36gh5hzlCh5//5 zAu1/iwy1fAlaI4CWRR14+e8/ozu5SCxlswsI79sGZcFuv+WQsQ84q297rq8v0Wr HdtmiRDGlBFfcuiEOjoSzSEwMWPc1F+8EcmiEp8SZBglKDM+kQI9XMKKXakqh7K0 yEWGAMm+1g== =dLiS -----END PGP SIGNATURE----- Merge tag 'io_uring-5.9-2020-08-21' of git://git.kernel.dk/linux-block Pull io_uring fixes from Jens Axboe: - Make sure the head link cancelation includes async work - Get rid of kiocb_wait_page_queue_init(), makes no sense to have it as a separate function since you moved it into io_uring itself - io_import_iovec cleanups (Pavel, me) - Use system_unbound_wq for ring exit work, to avoid spawning tons of these if we have tons of rings exiting at the same time - Fix req->flags overflow flag manipulation (Pavel) * tag 'io_uring-5.9-2020-08-21' of git://git.kernel.dk/linux-block: io_uring: kill extra iovec=NULL in import_iovec() io_uring: comment on kfree(iovec) checks io_uring: fix racy req->flags modification io_uring: use system_unbound_wq for ring exit work io_uring: cleanup io_import_iovec() of pre-mapped request io_uring: get rid of kiocb_wait_page_queue_init() io_uring: find and cancel head link async work on files exit |
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Rob Herring
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a326462cba |
dt-bindings: PCI: intel,lgm-pcie: Fix matching on all snps,dw-pcie instances
The intel,lgm-pcie binding is matching on all snps,dw-pcie instances
which is wrong. Add a custom 'select' entry to fix this.
Fixes:
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Linus Torvalds
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349111f050 |
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton: "11 patches. Subsystems affected by this: misc, mm/hugetlb, mm/vmalloc, mm/misc, romfs, relay, uprobes, squashfs, mm/cma, mm/pagealloc" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm, page_alloc: fix core hung in free_pcppages_bulk() mm: include CMA pages in lowmem_reserve at boot squashfs: avoid bio_alloc() failure with 1Mbyte blocks uprobes: __replace_page() avoid BUG in munlock_vma_page() kernel/relay.c: fix memleak on destroy relay channel romfs: fix uninitialized memory leak in romfs_dev_read() mm/rodata_test.c: fix missing function declaration mm/vunmap: add cond_resched() in vunmap_pmd_range khugepaged: adjust VM_BUG_ON_MM() in __khugepaged_enter() hugetlb_cgroup: convert comma to semicolon mailmap: add Andi Kleen |
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David S. Miller
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4af7b32f84 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says: ==================== pull-request: bpf 2020-08-21 The following pull-request contains BPF updates for your *net* tree. We've added 11 non-merge commits during the last 5 day(s) which contain a total of 12 files changed, 78 insertions(+), 24 deletions(-). The main changes are: 1) three fixes in BPF task iterator logic, from Yonghong. 2) fix for compressed dwarf sections in vmlinux, from Jiri. 3) fix xdp attach regression, from Andrii. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linus Torvalds
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f22c5579a7 |
RISC-V Fixes for 5.9-rc2
* The CLINT driver has been split in two: one to handle the M-mode CLINT (memory mapped and used on NOMMU systems) and one to handle the S-mode CLINT (via SBI). * The addition of SiFive's drivers to rv32_defconfig -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAl9AECkTHHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYiZMAD/wKrUd1yCPvg5lKMWLN34+CAJHKU/oH ASK3/AdwHS1B3zohk2Eq04hycBEzmFhz2TcoLResZb3CHyqXUN090xBz0Z4qAPlT NvOJE+fCZLdxXu35HS2wPpjkZnnBTom3kv3q2D+Cyq3nrFrGt1mGJ4a91oxebktP RODyooO982KjTSs/t10GUzuZFIDc7UzvyNQMv0EipXmPaVEPxPbnNhMbdkuCXWjs PKj6ZNMx7HVv5ms3RNQP83w3X1czLc8t/2ATfo2fApnrpizWvukzyIhDK3Ar37d+ f9u/SQdhv6NaAzacv8GYJ79o72e4hu6+llPrTrkTPQq5WtzAHQNTqYA+99+/Lj13 2Hh9DlRyLc7tUF2bidY6po7XluWVYbYk4JEVbTPDOUP5kmKM/MN6r14TzKxch+26 ghu1RI70cJkE3hn2DrbG7Errcs1+I+59Fhh+PzzxhY12V0d1EUY7SVETBw5GoOce YOz3327rJ6f0sozUwx9bZT2x6udVAPVDTyxZ2egmzay6xlFeMQJBxWSmleAHdZce 0O1qTOcfAp6Nyx8SIv7Ust208hGXzpsULFn6z9QQsQhfu4PIWQUUR7c3P15Sf3r8 3vyK5slBlBm2vgkfbsmf9hZ5u+BEc/ly8M/lotbXdjJXjzoAKsg5PSYQ4KjyO/qr 2xYMHVNsSoaFkw== =MBvG -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-5.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - The CLINT driver has been split in two: one to handle the M-mode CLINT (memory mapped and used on NOMMU systems) and one to handle the S-mode CLINT (via SBI). - The addition of SiFive's drivers to rv32_defconfig * tag 'riscv-for-linus-5.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: Add SiFive drivers to rv32_defconfig dt-bindings: timer: Add CLINT bindings RISC-V: Remove CLINT related code from timer and arch clocksource/drivers: Add CLINT timer driver RISC-V: Add mechanism to provide custom IPI operations |
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Linus Torvalds
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c0a4f5b354 |
xen: branch for v5.9-rc2
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Linus Torvalds
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985c788b6d |
Power management fixes for 5.9-rc2
- Fix re-enabling of resources in dev_pm_opp_set_rate() (Rajendra
Nayak).
- Fix OPP table reference counting in error paths (Stephen Boyd).
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Merge tag 'pm-5.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix a few issues in the operating performance points (OPP)
framework.
Specifics:
- Fix re-enabling of resources in dev_pm_opp_set_rate() (Rajendra
Nayak)
- Fix OPP table reference counting in error paths (Stephen Boyd)"
* tag 'pm-5.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
opp: Enable resources again if they were disabled earlier
opp: Put opp table in dev_pm_opp_set_rate() if _set_opp_bw() fails
opp: Put opp table in dev_pm_opp_set_rate() for empty tables
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Tobias Klauser
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b16fc097bc |
bpf: Fix two typos in uapi/linux/bpf.h
Also remove trailing whitespaces in bpf_skb_get_tunnel_key example code. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200821133642.18870-1-tklauser@distanz.ch |
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Tom Rix
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774d977abf |
net: dsa: b53: check for timeout
clang static analysis reports this problem
b53_common.c:1583:13: warning: The left expression of the compound
assignment is an uninitialized value. The computed value will
also be garbage
ent.port &= ~BIT(port);
~~~~~~~~ ^
ent is set by a successful call to b53_arl_read(). Unsuccessful
calls are caught by an switch statement handling specific returns.
b32_arl_read() calls b53_arl_op_wait() which fails with the
unhandled -ETIMEDOUT.
So add -ETIMEDOUT to the switch statement. Because
b53_arl_op_wait() already prints out a message, do not add another
one.
Fixes:
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Stephen Boyd
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8d75785a81 |
ARM64: vdso32: Install vdso32 from vdso_install
Add the 32-bit vdso Makefile to the vdso_install rule so that 'make
vdso_install' installs the 32-bit compat vdso when it is compiled.
Fixes:
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Linus Torvalds
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d723b99ec9 |
Improvements to ext4's block allocator performance for very large file
systems, especially when the file system or files which are highly fragmented. There is a new mount option, prefetch_block_bitmaps which will pull in the block bitmaps and set up the in-memory buddy bitmaps when the file system is initially mounted. Beyond that, a lot of bug fixes and cleanups. In particular, a number of changes to make ext4 more robust in the face of write errors or file system corruptions. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAl8/Q9YACgkQ8vlZVpUN gaPz+wgAkiWwpge0pfcukABW9FcHK9R82IPggA/NnFu0I+3trpqVQP8mYWqg+1l7 X0W6B6GHMcITGdwxVDNGHHv0WabXCqFPT0ENwW1cnl9UL6I91Ev2NjmG9HP6hVZa g3+NyXJwiOP38xsxpPJGPoYFw2wZyv8/e41MMnsE6goYjMmB04sHvXCUQkbN41Fn 3CMdsiueYZDAKflvAlL50Jy7Imz5tq9oy81/z+amqvWo4T0U8zRwQuf25nBAhr25 1WdT4CbCNGO2Qwyu9X+t/KGNVIQhCctkx/yz71l3p2piEGkw/XE4VJNrkmWb0zN7 k9F5uGOZlAlQEzx+5PN//Qtz1Db0QQ== =E6vv -----END PGP SIGNATURE----- Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "Improvements to ext4's block allocator performance for very large file systems, especially when the file system or files which are highly fragmented. There is a new mount option, prefetch_block_bitmaps which will pull in the block bitmaps and set up the in-memory buddy bitmaps when the file system is initially mounted. Beyond that, a lot of bug fixes and cleanups. In particular, a number of changes to make ext4 more robust in the face of write errors or file system corruptions" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (46 commits) ext4: limit the length of per-inode prealloc list ext4: reorganize if statement of ext4_mb_release_context() ext4: add mb_debug logging when there are lost chunks ext4: Fix comment typo "the the". jbd2: clean up checksum verification in do_one_pass() ext4: change to use fallthrough macro ext4: remove unused parameter of ext4_generic_delete_entry function mballoc: replace seq_printf with seq_puts ext4: optimize the implementation of ext4_mb_good_group() ext4: delete invalid comments near ext4_mb_check_limits() ext4: fix typos in ext4_mb_regular_allocator() comment ext4: fix checking of directory entry validity for inline directories fs: prevent BUG_ON in submit_bh_wbc() ext4: correctly restore system zone info when remount fails ext4: handle add_system_zone() failure in ext4_setup_system_zone() ext4: fold ext4_data_block_valid_rcu() into the caller ext4: check journal inode extents more carefully ext4: don't allow overlapping system zones ext4: handle error of ext4_setup_system_zone() on remount ext4: delete the invalid BUGON in ext4_mb_load_buddy_gfp() ... |
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David Howells
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5e0b17b026 |
afs: Fix NULL deref in afs_dynroot_depopulate()
If an error occurs during the construction of an afs superblock, it's
possible that an error occurs after a superblock is created, but before
we've created the root dentry. If the superblock has a dynamic root
(ie. what's normally mounted on /afs), the afs_kill_super() will call
afs_dynroot_depopulate() to unpin any created dentries - but this will
oops if the root hasn't been created yet.
Fix this by skipping that bit of code if there is no root dentry.
This leads to an oops looking like:
general protection fault, ...
KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f]
...
RIP: 0010:afs_dynroot_depopulate+0x25f/0x529 fs/afs/dynroot.c:385
...
Call Trace:
afs_kill_super+0x13b/0x180 fs/afs/super.c:535
deactivate_locked_super+0x94/0x160 fs/super.c:335
afs_get_tree+0x1124/0x1460 fs/afs/super.c:598
vfs_get_tree+0x89/0x2f0 fs/super.c:1547
do_new_mount fs/namespace.c:2875 [inline]
path_mount+0x1387/0x2070 fs/namespace.c:3192
do_mount fs/namespace.c:3205 [inline]
__do_sys_mount fs/namespace.c:3413 [inline]
__se_sys_mount fs/namespace.c:3390 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3390
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
which is oopsing on this line:
inode_lock(root->d_inode);
presumably because sb->s_root was NULL.
Fixes:
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Linus Torvalds
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cd02217a5d |
RDMA first 5.9rc pull request
One regression from 5.8 and a few bugs from earlier kernels. - Various spelling corrections in kernel prints - Bug fixes in hfi1 and bntx_re - Revert a 5.8 patch in hns - Batch update for Mellanox and Cumulus maintainers emails -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfB7FMLh+8QxL+6i3OG33FX4gmxoFAl8/0OsACgkQOG33FX4g mxo7Pg/8CJzOQdb9KmR1bwqzi18i0BQ7ev81NucQvBzJNY/grx2LYQUTbZCQx+QJ em+PdUmjtdcA1C1fBEbeS++/LIQxIpBZbU36Yvz4syxJqYHV+GX9EAoy02zitd6O tyQST6boCAZQln7ya0VmCREW5EVOgWOdBmxmxO7B5VViXbFb1BShysxtekQAOpTk TZU9HDhVaG4LRktr5IfyZLBeS6agbvBEXcwoeOkk+YvxDnwE3BYyveeDluEJdvh8 NqbYRxDZM0yKjVoxi08ceMhTJ7U+igCpoUP9O3NQCgWPaBHwE6udeWoT/5VEA+AJ 522477WPlsX88FL40m4F+qjbgctD+MjoswqgMXXhXJWIgnae3hvTnsMYAOH0xHGn F+LfwMct5kFNn3cueOxNmUfwylwxpnx5SiknDw1VnpNhybU2arPI2Tnkz9und848 WDUdOlgmWRjKgOjcN6KkqFb2cTXMbr1yRuid0sutmVXSeH7FtiNR3VdvZuS8VeYF pfev3XZFjRGy3AOTc83oSg6h0SDWAOvs0m24y0Jut1Lb49N1QpCITIHUeQhB8L+W udCVHvYSZdlnXKkrj7FDDwKBy43krJrGrNw+CM50o4eTHi+WlZ2dVlzVMtoU8YeJ qZw79pcsC8OY7nD2PJ456xFy1OhxKDY0iJXmjvIyi45GsOYNPks= =5gq2 -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma Pull rdma fixes from Jason Gunthorpe: "One regression from 5.8 and a few bugs from earlier kernels: - Various spelling corrections in kernel prints - Bug fixes in hfi1 and bntx_re - Revert a 5.8 patch in hns - Batch update for Mellanox and Cumulus maintainers emails" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: MAINTAINERS: Update Mellanox and Cumulus Network addresses to new domain Revert "RDMA/hns: Reserve one sge in order to avoid local length error" RDMA/hfi1: Correct an interlock issue for TID RDMA WRITE request RDMA/bnxt_re: Do not add user qps to flushlist RDMA/core: Fix spelling mistake "Could't" -> "Couldn't" RDMA/usnic: Fix spelling mistake "transistion" -> "transition" RDMA/hns: Fix spelling mistake "epmty" -> "empty" |
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Linus Torvalds
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7f04f3ed62 |
sound fixes for 5.9-rc2
A collection of small fixes over several drivers, but all are driver- specific and nothing looks scary. Slightly large changes are seen in ASoC qcom driver for the bugs that were revealed by the recent ASoC core change to report the invalid register access errors. Also ASoC fsl got a slight intensive change for the distortion fix. Others are only trivial fixes or device-specific quirks. -----BEGIN PGP SIGNATURE----- iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAl8/kt4OHHRpd2FpQHN1 c2UuZGUACgkQLtJE4w1nLE+sexAAoPtgbUActijlJY34J4cm7kIt1wVulKKgdxMu LQEbuJPbRuv80fcr7MIcYTc6Q20frb3kQYJNxyPAG7afVV5wkGa/dO6mUrS3LHyg UsQLqm6iHqZNg0wo8cZK9Lhs+VwWrD1VWnV+5ODL5koT/SYfzqI7Km3lKketA4y/ MvsRFhW03Mc6SabRINqxNcE3YTUHi8HPgM4aF9mQmBQTqm3tnld6MSCgo4B129cY rnNoGcpJmcZRGo1ZM7kUGS+FfLeclt3STvepbpz2iAoTWiI55X67uVwjAO3GHW4s 5EoycKu0f8D6g3ZO0evari1vJRhC0X2QVHO42CaDk32PKxnh+xlR4sBfuJW0Zsqt AR+Jibv/wiF+vmlC0s+DQqgaxPkCJrK6zJ4uvjZi+iZhqXhq8Rl9DmIOCUwPoPZd PsKhenrmjecL3yd7kgYMtSm6orjaAzkG9r8rUnTWuWvtnpIyMe9eN3BsOGZnI0GV sn0UCVJQSmlxNcbWfFX+w/hYajY82FGRYbUf8bOAMWIxZP5ecPu54cn5eta70JQk w+b3Th9FSFJDlnATA+WAoh4TmYHmuYBISjmx4tLjnMwKxUCirJt90o7hl04Ntwwe 1/pA4bIN6dN+csaLgWJzstlCxr/8H0LyQgRdvCfAES2ejboUQliiNOO0fDHkdf87 PTCJtUg= =T8Rb -----END PGP SIGNATURE----- Merge tag 'sound-5.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "A collection of small fixes over several drivers, but all are driver- specific and nothing looks scary. Slightly large changes are seen in ASoC qcom driver for the bugs that were revealed by the recent ASoC core change to report the invalid register access errors. Also ASoC fsl got a slight intensive change for the distortion fix. Others are only trivial fixes or device-specific quirks" * tag 'sound-5.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (25 commits) ALSA: hda: avoid reset of sdo_limit ALSA: hda/realtek: Add quirk for Samsung Galaxy Book Ion ALSA: usb-audio: ignore broken processing/extension unit ASoC: intel: Fix memleak in sst_media_open ASoC: wm8994: Avoid attempts to read unreadable registers ASoC: msm8916-wcd-analog: fix register Interrupt offset ASoC: wm8994: Prevent access to invalid VU register bits on WM1811 ALSA: hda/realtek: Add model alc298-samsung-headphone ALSA: usb-audio: Update documentation comment for MS2109 quirk ALSA: isa: fix spelling mistakes in the comments ALSA: usb-audio: Add capture support for Saffire 6 (USB 1.1) ALSA: hda/realtek: Add quirk for Samsung Galaxy Flex Book ASoC: q6routing: add dummy register read/write function ASoC: q6afe-dai: mark all widgets registers as SND_SOC_NOPM ASoC: Make soc_component_read() returning an error code again ASoC: amd: Replacing component->name with codec_dai->name. ASoC: fsl: Fix unused variable warning ASoC: tegra: tegra210_i2s: Fix compile warning with CONFIG_PM=n ASoC: tegra: tegra210_dmic: Fix compile warning with CONFIG_PM=n ASoC: tegra: tegra210_ahub: Fix compile warning with CONFIG_PM=n ... |
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Linus Torvalds
|
43d387a4ad |
drm fixes for 5.9-rc2
amdgpu: - Fix allocation size - SR-IOV fixes - Vega20 SMU feature state caching fix - Fix custom pptable handling - Arcturus golden settings update - Several display fixes - Fixes for Navy Flounder - Misc display fixes - RAS fix amdkfd: - SDMA fix for renoir i915: - Fix device parameter usage for selftest mock i915 device - Fix LPSP capability debugfs NULL dereference - Fix buddy register pagemask table - Fix intel_atomic_check() non-negative return value - Fix selftests passing a random 0 into ilog2() - Fix TGL power well enable/disable ordering - Switch to PMU module refcounting - GVT fixes virtio: - Add missing dma_fence_put() in virtio_gpu_execbuffer_ioctl(). - Fix memory leak in virtio_gpu_cleanup_object(). -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJfPyfDAAoJEAx081l5xIa+FZMP/1I13j/J/uaxThFuAc8m0By5 wvDLu4EdzV1zIXmAT1m/bUzvXVxsCgg6XSQjZEQ4nK0SqEN5dU8g/Kg+u0E3ojJc g4A3XJydrQ+CSkiuP51QenRXZPMdj3rAIKXYelb7UylSdw0tPKdBP0ISXTwQUZcS PSN6PPUiVTJHZ52EatO7yIDV2QGyV4h9qnKcGsyLIEBa567kClrQPqdUdLa+WBSf 9uTVdulx7CQg5vO5qZCQYpEDbhToZQA2DTYx9m640D5OCP0M6XCXTQIgpK7sISdk N1XkqhfiWr5ivnXJBRdqTkXv3PAUrxGNVYfXvkK3+oP5Vz4yrM9tB8AyCorWXzps WibnqejHgYhG57uwo3APNg/1j4EDJDdq01pDl65TEz2YyDLHAV1FiYW98XveKL2k 8uNqCmxFnnj4p9xWhsmNIm7dwkud3QxOs17vX7odzlLq63QX+8tTnjhAKw8aXFhC USJqmMNY5pI3kVX1jUHLGvPxakLngLWH2T+Bozk55Rm1f0JyMCY6ZSHPVaq48mqv 2ZifBgBb12h6MKENZvHXbGUrK1p+Q+uo4ueXvpQs1vAMNx1kQ0hJwoCJqNq+WxQN /P9XtQJUJ6jg/w1PSMNA3hipg4jtqy511pf9+jrdDOHbIYhIxEK3F1cmjasMjBya +zwVzm3p5u+TKuw+z4wF =eivO -----END PGP SIGNATURE----- Merge tag 'drm-fixes-2020-08-21' of git://anongit.freedesktop.org/drm/drm Pull drm fixes from Dave Airlie: "Regular fixes pull for rc2. Usual rc2 doesn't seem too busy, mainly i915 and amdgpu. I'd expect the usual uptick for rc3. amdgpu: - Fix allocation size - SR-IOV fixes - Vega20 SMU feature state caching fix - Fix custom pptable handling - Arcturus golden settings update - Several display fixes - Fixes for Navy Flounder - Misc display fixes - RAS fix amdkfd: - SDMA fix for renoir i915: - Fix device parameter usage for selftest mock i915 device - Fix LPSP capability debugfs NULL dereference - Fix buddy register pagemask table - Fix intel_atomic_check() non-negative return value - Fix selftests passing a random 0 into ilog2() - Fix TGL power well enable/disable ordering - Switch to PMU module refcounting - GVT fixes virtio: - Add missing dma_fence_put() in virtio_gpu_execbuffer_ioctl() - Fix memory leak in virtio_gpu_cleanup_object()" * tag 'drm-fixes-2020-08-21' of git://anongit.freedesktop.org/drm/drm: (34 commits) Revert "drm/amdgpu: disable gfxoff for navy_flounder" drm/i915/tgl: Make sure TC-cold is blocked before enabling TC AUX power wells drm/i915/selftests: Avoid passing a random 0 into ilog2 drm/i915: Fix wrong return value in intel_atomic_check() drm/i915: Update bw_buddy pagemask table drm/i915/display: Check for an LPSP encoder before dereferencing drm/i915: Copy default modparams to mock i915_device drm/i915: Provide the perf pmu.module drm/amd/display: fix pow() crashing when given base 0 drm/amd/display: Reset scrambling on Test Pattern drm/amd/display: fix dcn3 wide timing dsc validation drm/amd/display: Fix DFPstate hang due to view port changed drm/amd/display: Assign correct left shift drm/amd/display: Call DMUB for eDP power control drm/amdkfd: fix the wrong sdma instance query for renoir drm/amdgpu: parse ta firmware for navy_flounder drm/amdgpu: fix NULL pointer access issue when unloading driver drm/amdgpu: fix uninit-value in arcturus_log_thermal_throttling_event() drm/amdgpu: disable gfxoff for navy_flounder drm/amdgpu/display: use GFP_ATOMIC in dcn20_validate_bandwidth_internal ... |
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Charan Teja Reddy
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88e8ac11d2 |
mm, page_alloc: fix core hung in free_pcppages_bulk()
The following race is observed with the repeated online, offline and a
delay between two successive online of memory blocks of movable zone.
P1 P2
Online the first memory block in
the movable zone. The pcp struct
values are initialized to default
values,i.e., pcp->high = 0 &
pcp->batch = 1.
Allocate the pages from the
movable zone.
Try to Online the second memory
block in the movable zone thus it
entered the online_pages() but yet
to call zone_pcp_update().
This process is entered into
the exit path thus it tries
to release the order-0 pages
to pcp lists through
free_unref_page_commit().
As pcp->high = 0, pcp->count = 1
proceed to call the function
free_pcppages_bulk().
Update the pcp values thus the
new pcp values are like, say,
pcp->high = 378, pcp->batch = 63.
Read the pcp's batch value using
READ_ONCE() and pass the same to
free_pcppages_bulk(), pcp values
passed here are, batch = 63,
count = 1.
Since num of pages in the pcp
lists are less than ->batch,
then it will stuck in
while(list_empty(list)) loop
with interrupts disabled thus
a core hung.
Avoid this by ensuring free_pcppages_bulk() is called with proper count of
pcp list pages.
The mentioned race is some what easily reproducible without [1] because
pcp's are not updated for the first memory block online and thus there is
a enough race window for P2 between alloc+free and pcp struct values
update through onlining of second memory block.
With [1], the race still exists but it is very narrow as we update the pcp
struct values for the first memory block online itself.
This is not limited to the movable zone, it could also happen in cases
with the normal zone (e.g., hotplug to a node that only has DMA memory, or
no other memory yet).
[1]: https://patchwork.kernel.org/patch/11696389/
Fixes:
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Doug Berger
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e08d3fdfe2 |
mm: include CMA pages in lowmem_reserve at boot
The lowmem_reserve arrays provide a means of applying pressure against
allocations from lower zones that were targeted at higher zones. Its
values are a function of the number of pages managed by higher zones and
are assigned by a call to the setup_per_zone_lowmem_reserve() function.
The function is initially called at boot time by the function
init_per_zone_wmark_min() and may be called later by accesses of the
/proc/sys/vm/lowmem_reserve_ratio sysctl file.
The function init_per_zone_wmark_min() was moved up from a module_init to
a core_initcall to resolve a sequencing issue with khugepaged.
Unfortunately this created a sequencing issue with CMA page accounting.
The CMA pages are added to the managed page count of a zone when
cma_init_reserved_areas() is called at boot also as a core_initcall. This
makes it uncertain whether the CMA pages will be added to the managed page
counts of their zones before or after the call to
init_per_zone_wmark_min() as it becomes dependent on link order. With the
current link order the pages are added to the managed count after the
lowmem_reserve arrays are initialized at boot.
This means the lowmem_reserve values at boot may be lower than the values
used later if /proc/sys/vm/lowmem_reserve_ratio is accessed even if the
ratio values are unchanged.
In many cases the difference is not significant, but for example
an ARM platform with 1GB of memory and the following memory layout
cma: Reserved 256 MiB at 0x0000000030000000
Zone ranges:
DMA [mem 0x0000000000000000-0x000000002fffffff]
Normal empty
HighMem [mem 0x0000000030000000-0x000000003fffffff]
would result in 0 lowmem_reserve for the DMA zone. This would allow
userspace to deplete the DMA zone easily.
Funnily enough
$ cat /proc/sys/vm/lowmem_reserve_ratio
would fix up the situation because as a side effect it forces
setup_per_zone_lowmem_reserve.
This commit breaks the link order dependency by invoking
init_per_zone_wmark_min() as a postcore_initcall so that the CMA pages
have the chance to be properly accounted in their zone(s) and allowing
the lowmem_reserve arrays to receive consistent values.
Fixes:
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Phillip Lougher
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f26044c83e |
squashfs: avoid bio_alloc() failure with 1Mbyte blocks
This is a regression introduced by the patch "migrate from ll_rw_block
usage to BIO".
Bio_alloc() is limited to 256 pages (1 Mbyte). This can cause a failure
when reading 1 Mbyte block filesystems. The problem is a datablock can be
fully (or almost uncompressed), requiring 256 pages, but, because blocks
are not aligned to page boundaries, it may require 257 pages to read.
Bio_kmalloc() can handle 1024 pages, and so use this for the edge
condition.
Fixes:
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Hugh Dickins
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c17c3dc9d0 |
uprobes: __replace_page() avoid BUG in munlock_vma_page()
syzbot crashed on the VM_BUG_ON_PAGE(PageTail) in munlock_vma_page(), when
called from uprobes __replace_page(). Which of many ways to fix it?
Settled on not calling when PageCompound (since Head and Tail are equals
in this context, PageCompound the usual check in uprobes.c, and the prior
use of FOLL_SPLIT_PMD will have cleared PageMlocked already).
Fixes:
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Wei Yongjun
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71e843295c |
kernel/relay.c: fix memleak on destroy relay channel
kmemleak report memory leak as follows:
unreferenced object 0x607ee4e5f948 (size 8):
comm "syz-executor.1", pid 2098, jiffies 4295031601 (age 288.468s)
hex dump (first 8 bytes):
00 00 00 00 00 00 00 00 ........
backtrace:
relay_open kernel/relay.c:583 [inline]
relay_open+0xb6/0x970 kernel/relay.c:563
do_blk_trace_setup+0x4a8/0xb20 kernel/trace/blktrace.c:557
__blk_trace_setup+0xb6/0x150 kernel/trace/blktrace.c:597
blk_trace_ioctl+0x146/0x280 kernel/trace/blktrace.c:738
blkdev_ioctl+0xb2/0x6a0 block/ioctl.c:613
block_ioctl+0xe5/0x120 fs/block_dev.c:1871
vfs_ioctl fs/ioctl.c:48 [inline]
__do_sys_ioctl fs/ioctl.c:753 [inline]
__se_sys_ioctl fs/ioctl.c:739 [inline]
__x64_sys_ioctl+0x170/0x1ce fs/ioctl.c:739
do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
'chan->buf' is malloced in relay_open() by alloc_percpu() but not free
while destroy the relay channel. Fix it by adding free_percpu() before
return from relay_destroy_channel().
Fixes:
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Jann Horn
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bcf85fcedf |
romfs: fix uninitialized memory leak in romfs_dev_read()
romfs has a superblock field that limits the size of the filesystem; data
beyond that limit is never accessed.
romfs_dev_read() fetches a caller-supplied number of bytes from the
backing device. It returns 0 on success or an error code on failure;
therefore, its API can't represent short reads, it's all-or-nothing.
However, when romfs_dev_read() detects that the requested operation would
cross the filesystem size limit, it currently silently truncates the
requested number of bytes. This e.g. means that when the content of a
file with size 0x1000 starts one byte before the filesystem size limit,
->readpage() will only fill a single byte of the supplied page while
leaving the rest uninitialized, leaking that uninitialized memory to
userspace.
Fix it by returning an error code instead of truncating the read when the
requested read operation would go beyond the end of the filesystem.
Fixes:
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Leon Romanovsky
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86f54bb7e4 |
mm/rodata_test.c: fix missing function declaration
The compilation with CONFIG_DEBUG_RODATA_TEST set produces the following
warning due to the missing include.
mm/rodata_test.c:15:6: warning: no previous prototype for 'rodata_test' [-Wmissing-prototypes]
15 | void rodata_test(void)
| ^~~~~~~~~~~
Fixes:
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Aneesh Kumar K.V
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e47110e905 |
mm/vunmap: add cond_resched() in vunmap_pmd_range
Like zap_pte_range add cond_resched so that we can avoid softlockups as
reported below. On non-preemptible kernel with large I/O map region (like
the one we get when using persistent memory with sector mode), an unmap of
the namespace can report below softlockups.
22724.027334] watchdog: BUG: soft lockup - CPU#49 stuck for 23s! [ndctl:50777]
NIP [c0000000000dc224] plpar_hcall+0x38/0x58
LR [c0000000000d8898] pSeries_lpar_hpte_invalidate+0x68/0xb0
Call Trace:
flush_hash_page+0x114/0x200
hpte_need_flush+0x2dc/0x540
vunmap_page_range+0x538/0x6f0
free_unmap_vmap_area+0x30/0x70
remove_vm_area+0xfc/0x140
__vunmap+0x68/0x270
__iounmap.part.0+0x34/0x60
memunmap+0x54/0x70
release_nodes+0x28c/0x300
device_release_driver_internal+0x16c/0x280
unbind_store+0x124/0x170
drv_attr_store+0x44/0x60
sysfs_kf_write+0x64/0x90
kernfs_fop_write+0x1b0/0x290
__vfs_write+0x3c/0x70
vfs_write+0xd8/0x260
ksys_write+0xdc/0x130
system_call+0x5c/0x70
Reported-by: Harish Sriram <harish@linux.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200807075933.310240-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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