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Author SHA1 Message Date
Vidya Srinivas
43e2b37e2a drm/i915/dpt: Make DPT object unshrinkable 
In some scenarios, the DPT object gets shrunk but
the actual framebuffer did not and thus its still
there on the DPT's vm->bound_list. Then it tries to
rewrite the PTEs via a stale CPU mapping. This causes panic.

Cc: stable@vger.kernel.org
Reported-by: Shawn Lee <shawn.c.lee@intel.com>
Fixes: 0dc987b699 ("drm/i915/display: Add smem fallback allocation for dpt")
Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com>
[vsyrjala: Add TODO comment]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240520165634.1162470-1-vidya.srinivas@intel.com
(cherry picked from commit 51064d471c)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2024-05-29 11:35:43 +03:00
Andi Shyti
ee01b6a386 drm/i915/gt: Fix CCS id's calculation for CCS mode setting 
The whole point of the previous fixes has been to change the CCS
hardware configuration to generate only one stream available to
the compute users. We did this by changing the info.engine_mask
that is set during device probe, reset during the detection of
the fused engines, and finally reset again when choosing the CCS
mode.

We can't use the engine_mask variable anymore, as with the
current configuration, it imposes only one CCS no matter what the
hardware configuration is.

Before changing the engine_mask for the third time, save it and
use it for calculating the CCS mode.

After the previous changes, the user reported a performance drop
to around 1/4. We have tested that the compute operations, with
the current patch, have improved by the same factor.

Fixes: 6db31251bb ("drm/i915/gt: Enable only one CCS for compute workload")
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Chris Wilson <chris.p.wilson@linux.intel.com>
Cc: Gnattu OC <gnattuoc@me.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Tested-by: Jian Ye <jian.ye@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Tested-by: Gnattu OC <gnattuoc@me.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240517090616.242529-1-andi.shyti@linux.intel.com
(cherry picked from commit a09d2327a9)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2024-05-29 11:35:38 +03:00
Nirmoy Das
659a3062c7 drm/i915/selftests: Set always_coherent to false when reading from CPU 
Commit 8d4ba9fc1c ("drm/i915/selftests: Pick correct caching mode.")
was not complete  as for non LLC  sharing platforms cpu read can happen
from LLC which probably doesn't have the latest changes made by GPU.

Cc: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Jonathan Cavitt <jonathan.cavitt@intel.com>
Fixes: 8d4ba9fc1c ("drm/i915/selftests: Pick correct caching mode.")
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240516151403.2875-1-nirmoy.das@intel.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
(cherry picked from commit 007ed70831)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2024-05-29 11:35:32 +03:00
Arnd Bergmann
d4f36db623 drm/i915/guc: avoid FIELD_PREP warning 
With gcc-7 and earlier, there are lots of warnings like

In file included from <command-line>:0:0:
In function '__guc_context_policy_add_priority.isra.66',
    inlined from '__guc_context_set_prio.isra.67' at drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c:3292:3,
    inlined from 'guc_context_set_prio' at drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c:3320:2:
include/linux/compiler_types.h:399:38: error: call to '__compiletime_assert_631' declared with attribute error: FIELD_PREP: mask is not constant
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                      ^
...
drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c:2422:3: note: in expansion of macro 'FIELD_PREP'
   FIELD_PREP(GUC_KLV_0_KEY, GUC_CONTEXT_POLICIES_KLV_ID_##id) | \
   ^~~~~~~~~~

Make sure that GUC_KLV_0_KEY is an unsigned value to avoid the warning.

Fixes: 77b6f79df6 ("drm/i915/guc: Update to GuC version 69.0.3")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Julia Filipchuk <julia.filipchuk@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240430164809.482131-1-julia.filipchuk@intel.com
(cherry picked from commit 364e039827)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2024-05-29 11:35:26 +03:00
Chris Wilson
70cb9188ff drm/i915/gt: Disarm breadcrumbs if engines are already idle 
The breadcrumbs use a GT wakeref for guarding the interrupt, but are
disarmed during release of the engine wakeref. This leaves a hole where
we may attach a breadcrumb just as the engine is parking (after it has
parked its breadcrumbs), execute the irq worker with some signalers still
attached, but never be woken again.

That issue manifests itself in CI with IGT runner timeouts while tests
are waiting indefinitely for release of all GT wakerefs.

<6> [209.151778] i915: Running live_engine_pm_selftests/live_engine_busy_stats
<7> [209.231628] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling PW_5
<7> [209.231816] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling PW_4
<7> [209.231944] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling PW_3
<7> [209.232056] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling PW_2
<7> [209.232166] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling DC_off
<7> [209.232270] i915 0000:00:02.0: [drm:skl_enable_dc6 [i915]] Enabling DC6
<7> [209.232368] i915 0000:00:02.0: [drm:gen9_set_dc_state.part.0 [i915]] Setting DC state from 00 to 02
<4> [299.356116] [IGT] Inactivity timeout exceeded. Killing the current test with SIGQUIT.
...
<6> [299.356526] sysrq: Show State
...
<6> [299.373964] task:i915_selftest   state:D stack:11784 pid:5578  tgid:5578  ppid:873    flags:0x00004002
<6> [299.373967] Call Trace:
<6> [299.373968]  <TASK>
<6> [299.373970]  __schedule+0x3bb/0xda0
<6> [299.373974]  schedule+0x41/0x110
<6> [299.373976]  intel_wakeref_wait_for_idle+0x82/0x100 [i915]
<6> [299.374083]  ? __pfx_var_wake_function+0x10/0x10
<6> [299.374087]  live_engine_busy_stats+0x9b/0x500 [i915]
<6> [299.374173]  __i915_subtests+0xbe/0x240 [i915]
<6> [299.374277]  ? __pfx___intel_gt_live_setup+0x10/0x10 [i915]
<6> [299.374369]  ? __pfx___intel_gt_live_teardown+0x10/0x10 [i915]
<6> [299.374456]  intel_engine_live_selftests+0x1c/0x30 [i915]
<6> [299.374547]  __run_selftests+0xbb/0x190 [i915]
<6> [299.374635]  i915_live_selftests+0x4b/0x90 [i915]
<6> [299.374717]  i915_pci_probe+0x10d/0x210 [i915]

At the end of the interrupt worker, if there are no more engines awake,
disarm the breadcrumb and go to sleep.

Fixes: 9d5612ca16 ("drm/i915/gt: Defer enabling the breadcrumb interrupt to after submission")
Closes: https://gitlab.freedesktop.org/drm/intel/issues/10026
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: <stable@vger.kernel.org> # v5.12+
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Acked-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240423165505.465734-2-janusz.krzysztofik@linux.intel.com
(cherry picked from commit fbad43ecca)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2024-05-29 11:35:15 +03:00
Janusz Krzysztofik
647535760a Revert "drm/i915: Remove extra multi-gt pm-references" 
This reverts commit 1f33dc0c11.

There was a patch supposed to fix an issue of illegal attempts to free a
still active i915 VMA object when parking a GT believed to be idle,
reported by CI on 2-GT Meteor Lake.  As a solution, an extra wakeref for
a Primary GT was acquired from i915_gem_do_execbuffer() -- see commit
f56fe3e917 ("drm/i915: Fix a VMA UAF for multi-gt platform").

However, that fix occurred insufficient -- the issue was still reported by
CI.  That wakeref was released on exit from i915_gem_do_execbuffer(), then
potentially before completion of the request and deactivation of its
associated VMAs.  Moreover, CI reports indicated that single-GT platforms
also suffered sporadically from the same race.

Since that issue was fixed by another commit f3c71b2ded ("drm/i915/vma:
Fix UAF on destroy against retire race"), the changes introduced by that
insufficient fix were dropped as no longer useful.  However, that series
resulted in another VMA UAF scenario now being triggered in CI.

<4> [260.290809] ------------[ cut here ]------------
<4> [260.290988] list_del corruption. prev->next should be ffff888118c5d990, but was ffff888118c5a510. (prev=ffff888118c5a510)
<4> [260.291004] WARNING: CPU: 2 PID: 1143 at lib/list_debug.c:62 __list_del_entry_valid_or_report+0xb7/0xe0
..
<4> [260.291055] CPU: 2 PID: 1143 Comm: kms_plane Not tainted 6.9.0-rc2-CI_DRM_14524-ga25d180c6853+ #1
<4> [260.291058] Hardware name: Intel Corporation Meteor Lake Client Platform/MTL-P LP5x T3 RVP, BIOS MTLPFWI1.R00.3471.D91.2401310918 01/31/2024
<4> [260.291060] RIP: 0010:__list_del_entry_valid_or_report+0xb7/0xe0
...
<4> [260.291087] Call Trace:
<4> [260.291089]  <TASK>
<4> [260.291124]  i915_vma_reopen+0x43/0x80 [i915]
<4> [260.291298]  eb_lookup_vmas+0x9cb/0xcc0 [i915]
<4> [260.291579]  i915_gem_do_execbuffer+0xc9a/0x26d0 [i915]
<4> [260.291883]  i915_gem_execbuffer2_ioctl+0x123/0x2a0 [i915]
...
<4> [260.292301]  </TASK>
...
<4> [260.292506] ---[ end trace 0000000000000000 ]---
<4> [260.292782] general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6ca3: 0000 [#1] PREEMPT SMP NOPTI
<4> [260.303575] CPU: 2 PID: 1143 Comm: kms_plane Tainted: G        W          6.9.0-rc2-CI_DRM_14524-ga25d180c6853+ #1
<4> [260.313851] Hardware name: Intel Corporation Meteor Lake Client Platform/MTL-P LP5x T3 RVP, BIOS MTLPFWI1.R00.3471.D91.2401310918 01/31/2024
<4> [260.326359] RIP: 0010:eb_validate_vmas+0x114/0xd80 [i915]
...
<4> [260.428756] Call Trace:
<4> [260.431192]  <TASK>
<4> [639.283393]  i915_gem_do_execbuffer+0xd05/0x26d0 [i915]
<4> [639.305245]  i915_gem_execbuffer2_ioctl+0x123/0x2a0 [i915]
...
<4> [639.411134]  </TASK>
...
<4> [639.449979] ---[ end trace 0000000000000000 ]---

We defer actually closing, unbinding and destroying a VMA until next idle
point, or until the object is freed in the meantime.  By postponing the
unbind, we allow for the VMA to be reopened by the client, avoiding the
work required to rebind the VMA.

Starting from commit b0647a5e79 ("drm/i915: Avoid live-lock with
i915_vma_parked()"), we assume that as long as a GT is held idle, no VMA
would be reopened while we destroy them.  That assumption is no longer
true in multi-GT configurations, where a VMA we reopen may be handled by a
GT different from the one that we already keep active via its engine while
we set up an execbuf request.

Restoring the extra GT0 PM wakeref removed from i915_gem_do_execbuffer()
processing path seems to fix this issue.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10608
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Nirmoy Das <nirmoy.das@linux.intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@linux.intel.com>
Fixes: 1f33dc0c11 ("drm/i915: Remove extra multi-gt pm-references")
Link: https://patchwork.freedesktop.org/patch/msgid/20240506180253.96858-2-janusz.krzysztofik@linux.intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit 749670a58d)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2024-05-29 11:35:08 +03:00
Linus Torvalds
1613e604df Linux 6.10-rc1 2024-05-26 15:20:12 -07:00
Kent Overstreet
9b0abe7948 mm: percpu: Include smp.h in alloc_tag.h 
percpu.h depends on smp.h, but doesn't include it directly because of
circular header dependency issues; percpu.h is needed in a bunch of low
level headers.

This fixes a randconfig build error on mips:

  include/linux/alloc_tag.h: In function '__alloc_tag_ref_set':
  include/asm-generic/percpu.h:31:40: error: implicit declaration of function 'raw_smp_processor_id' [-Werror=implicit-function-declaration]

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 24e44cc22a ("mm: percpu: enable per-cpu allocation tagging")
Closes: https://lore.kernel.org/oe-kbuild-all/202405210052.DIrMXJNz-lkp@intel.com/
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2024-05-26 14:40:39 -07:00
Linus Torvalds
6fbf71854e Revert a patch causing a regression as described in the cset: 
"This made a simple 'perf record -e cycles:pp make -j199' stop working on
     the Ampere ARM64 system Linus uses to test ARM64 kernels, as discussed
     at length in the threads in the Link tags below.
 
     The fix provided by Ian wasn't acceptable and work to fix this will take
     time we don't have at this point, so lets revert this and work on it on
     the next devel cycle."
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v6.10-1-2024-05-26' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf tool fix from Arnaldo Carvalho de Melo:
 "Revert a patch causing a regression.

  This made a simple 'perf record -e cycles:pp make -j199' stop working
  on the Ampere ARM64 system Linus uses to test ARM64 kernels".

* tag 'perf-tools-fixes-for-v6.10-1-2024-05-26' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
  Revert "perf parse-events: Prefer sysfs/JSON hardware events over legacy"
 2024-05-26 09:54:26 -07:00
Arnaldo Carvalho de Melo
4f1b067359 Revert "perf parse-events: Prefer sysfs/JSON hardware events over legacy" 
This reverts commit 617824a7f0.

This made a simple 'perf record -e cycles:pp make -j199' stop working on
the Ampere ARM64 system Linus uses to test ARM64 kernels, as discussed
at length in the threads in the Link tags below.

The fix provided by Ian wasn't acceptable and work to fix this will take
time we don't have at this point, so lets revert this and work on it on
the next devel cycle.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Cc: Ethan Adams <j.ethan.adams@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tycho Andersen <tycho@tycho.pizza>
Cc: Yang Jihong <yangjihong@bytedance.com>
Link: https://lore.kernel.org/lkml/CAHk-=wi5Ri=yR2jBVk-4HzTzpoAWOgstr1LEvg_-OXtJvXXJOA@mail.gmail.com
Link: https://lore.kernel.org/lkml/CAHk-=wiWvtFyedDNpoV7a8Fq_FpbB+F5KmWK2xPY3QoYseOf_A@mail.gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2024-05-26 08:41:34 -03:00
Linus Torvalds
c13320499b four smb client fixes, including two important netfs integration fixes 
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Merge tag '6.10-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - two important netfs integration fixes - including for a data
   corruption and also fixes for multiple xfstests

 - reenable swap support over SMB3

* tag '6.10-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Fix missing set of remote_i_size
  cifs: Fix smb3_insert_range() to move the zero_point
  cifs: update internal version number
  smb3: reenable swapfiles over SMB3 mounts
 2024-05-25 22:33:10 -07:00
Linus Torvalds
9b62e02e63 16 hotfixes, 11 of which are cc:stable. 
A few nilfs2 fixes, the remainder are for MM: a couple of selftests fixes,
 various singletons fixing various issues in various parts.
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Merge tag 'mm-hotfixes-stable-2024-05-25-09-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "16 hotfixes, 11 of which are cc:stable.

  A few nilfs2 fixes, the remainder are for MM: a couple of selftests
  fixes, various singletons fixing various issues in various parts"

* tag 'mm-hotfixes-stable-2024-05-25-09-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/ksm: fix possible UAF of stable_node
  mm/memory-failure: fix handling of dissolved but not taken off from buddy pages
  mm: /proc/pid/smaps_rollup: avoid skipping vma after getting mmap_lock again
  nilfs2: fix potential hang in nilfs_detach_log_writer()
  nilfs2: fix unexpected freezing of nilfs_segctor_sync()
  nilfs2: fix use-after-free of timer for log writer thread
  selftests/mm: fix build warnings on ppc64
  arm64: patching: fix handling of execmem addresses
  selftests/mm: compaction_test: fix bogus test success and reduce probability of OOM-killer invocation
  selftests/mm: compaction_test: fix incorrect write of zero to nr_hugepages
  selftests/mm: compaction_test: fix bogus test success on Aarch64
  mailmap: update email address for Satya Priya
  mm/huge_memory: don't unpoison huge_zero_folio
  kasan, fortify: properly rename memintrinsics
  lib: add version into /proc/allocinfo output
  mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL
 2024-05-25 15:10:33 -07:00
Linus Torvalds
a0db36ed57 Misc fixes: 
- Fix x86 IRQ vector leak caused by a CPU offlining race
 
  - Fix build failure in the riscv-imsic irqchip driver
    caused by an API-change semantic conflict
 
  - Fix use-after-free in irq_find_at_or_after()
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'irq-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Ingo Molnar:

 - Fix x86 IRQ vector leak caused by a CPU offlining race

 - Fix build failure in the riscv-imsic irqchip driver
   caused by an API-change semantic conflict

 - Fix use-after-free in irq_find_at_or_after()

* tag 'irq-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()
  genirq/cpuhotplug, x86/vector: Prevent vector leak during CPU offline
  irqchip/riscv-imsic: Fixup riscv_ipi_set_virq_range() conflict
 2024-05-25 14:48:40 -07:00
Linus Torvalds
3a390f24b7 Miscellaneous fixes: 
- Fix regressions of the new x86 CPU VFM (vendor/family/model)
    enumeration/matching code
 
  - Fix crash kernel detection on buggy firmware with
    non-compliant ACPI MADT tables
 
  - Address Kconfig warning
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:

 - Fix regressions of the new x86 CPU VFM (vendor/family/model)
   enumeration/matching code

 - Fix crash kernel detection on buggy firmware with
   non-compliant ACPI MADT tables

 - Address Kconfig warning

* tag 'x86-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Fix x86_match_cpu() to match just X86_VENDOR_INTEL
  crypto: x86/aes-xts - switch to new Intel CPU model defines
  x86/topology: Handle bogus ACPI tables correctly
  x86/kconfig: Select ARCH_WANT_FRAME_POINTERS again when UNWINDER_FRAME_POINTER=y
 2024-05-25 14:40:09 -07:00
Linus Torvalds
56676c4c06 ipmi: Mostly updates for deprecated interfaces 
These changes are mostly updates for deprecated interfaces,
 platform.remove and converting from a tasklet to a BH workqueue.  Also
 use HAS_IOPORT for disabling inb()/outb().
 
 -corey
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Merge tag 'for-linus-6.10-1' of https://github.com/cminyard/linux-ipmi

Pull ipmi updates from Corey Minyard:
 "Mostly updates for deprecated interfaces, platform.remove and
  converting from a tasklet to a BH workqueue.

  Also use HAS_IOPORT for disabling inb()/outb()"

* tag 'for-linus-6.10-1' of https://github.com/cminyard/linux-ipmi:
  ipmi: kcs_bmc_npcm7xx: Convert to platform remove callback returning void
  ipmi: kcs_bmc_aspeed: Convert to platform remove callback returning void
  ipmi: ipmi_ssif: Convert to platform remove callback returning void
  ipmi: ipmi_si_platform: Convert to platform remove callback returning void
  ipmi: ipmi_powernv: Convert to platform remove callback returning void
  ipmi: bt-bmc: Convert to platform remove callback returning void
  char: ipmi: handle HAS_IOPORT dependencies
  ipmi: Convert from tasklet to BH workqueue
 2024-05-25 14:32:29 -07:00
Linus Torvalds
74eca356f6 We have a series from Xiubo that adds support for additional access 
checks based on MDS auth caps which were recently made available to
 clients.  This is needed to prevent scenarios where the MDS quietly
 discards updates that a UID-restricted client previously (wrongfully)
 acked to the user.  Other than that, just a documentation fixup.
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Merge tag 'ceph-for-6.10-rc1' of https://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "A series from Xiubo that adds support for additional access checks
  based on MDS auth caps which were recently made available to clients.

  This is needed to prevent scenarios where the MDS quietly discards
  updates that a UID-restricted client previously (wrongfully) acked to
  the user.

  Other than that, just a documentation fixup"

* tag 'ceph-for-6.10-rc1' of https://github.com/ceph/ceph-client:
  doc: ceph: update userspace command to get CephFS metadata
  ceph: add CEPHFS_FEATURE_MDS_AUTH_CAPS_CHECK feature bit
  ceph: check the cephx mds auth access for async dirop
  ceph: check the cephx mds auth access for open
  ceph: check the cephx mds auth access for setattr
  ceph: add ceph_mds_check_access() helper
  ceph: save cap_auths in MDS client when session is opened
 2024-05-25 14:23:58 -07:00
Linus Torvalds
89b61ca478 driver ntfs3 for linux 6.10 
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Merge tag 'ntfs3_for_6.10' of https://github.com/Paragon-Software-Group/linux-ntfs3

Pull ntfs3 updates from Konstantin Komarov:
 "Fixes:
   - reusing of the file index (could cause the file to be trimmed)
   - infinite dir enumeration
   - taking DOS names into account during link counting
   - le32_to_cpu conversion, 32 bit overflow, NULL check
   - some code was refactored

  Changes:
   - removed max link count info display during driver init

  Remove:
   - atomic_open has been removed for lack of use"

* tag 'ntfs3_for_6.10' of https://github.com/Paragon-Software-Group/linux-ntfs3:
  fs/ntfs3: Break dir enumeration if directory contents error
  fs/ntfs3: Fix case when index is reused during tree transformation
  fs/ntfs3: Mark volume as dirty if xattr is broken
  fs/ntfs3: Always make file nonresident on fallocate call
  fs/ntfs3: Redesign ntfs_create_inode to return error code instead of inode
  fs/ntfs3: Use variable length array instead of fixed size
  fs/ntfs3: Use 64 bit variable to avoid 32 bit overflow
  fs/ntfs3: Check 'folio' pointer for NULL
  fs/ntfs3: Missed le32_to_cpu conversion
  fs/ntfs3: Remove max link count info display during driver init
  fs/ntfs3: Taking DOS names into account during link counting
  fs/ntfs3: remove atomic_open
  fs/ntfs3: use kcalloc() instead of kzalloc()
 2024-05-25 14:19:01 -07:00
Linus Torvalds
6c8b1a2dca two ksmbd server fixes, both for stable 
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Merge tag '6.10-rc-ksmbd-server-fixes' of git://git.samba.org/ksmbd

Pull smb server fixes from Steve French:
 "Two ksmbd server fixes, both for stable"

* tag '6.10-rc-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: ignore trailing slashes in share paths
  ksmbd: avoid to send duplicate oplock break notifications
 2024-05-25 14:15:39 -07:00
Linus Torvalds
54f71b0369 RTC for 6.10 
New driver:
  - Epson RX8111
 
 Drivers:
  - Many Device Tree bindings conversions to dtschema
  - pcf8563: wakeup-source support
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Merge tag 'rtc-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "There is one new driver and then most of the changes are the device
  tree bindings conversions to yaml.

  New driver:
   - Epson RX8111

  Drivers:
   - Many Device Tree bindings conversions to dtschema
   - pcf8563: wakeup-source support"

* tag 'rtc-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  pcf8563: add wakeup-source support
  rtc: rx8111: handle VLOW flag
  rtc: rx8111: demote warnings to debug level
  rtc: rx6110: Constify struct regmap_config
  dt-bindings: rtc: convert trivial devices into dtschema
  dt-bindings: rtc: stmp3xxx-rtc: convert to dtschema
  dt-bindings: rtc: pxa-rtc: convert to dtschema
  rtc: Add driver for Epson RX8111
  dt-bindings: rtc: Add Epson RX8111
  rtc: mcp795: drop unneeded MODULE_ALIAS
  rtc: nuvoton: Modify part number value
  rtc: test: Split rtc unit test into slow and normal speed test
  dt-bindings: rtc: nxp,lpc1788-rtc: convert to dtschema
  dt-bindings: rtc: digicolor-rtc: move to trivial-rtc
  dt-bindings: rtc: alphascale,asm9260-rtc: convert to dtschema
  dt-bindings: rtc: armada-380-rtc: convert to dtschema
  rtc: cros-ec: provide ID table for avoiding fallback match
 2024-05-25 13:33:53 -07:00
Linus Torvalds
4286e1fceb I3C for 6.10 
Core:
  - Allow device driver to trigger controller runtime PM
 
 Drivers:
  - dw: hot-join support
  - svc: better IBI handling
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Merge tag 'i3c/for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux

Pull i3c updates from Alexandre Belloni:
 "Runtime PM (power management) is improved and hot-join support has
  been added to the dw controller driver.

  Core:
   - Allow device driver to trigger controller runtime PM

  Drivers:
   - dw: hot-join support
   - svc: better IBI handling"

* tag 'i3c/for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
  i3c: dw: Add hot-join support.
  i3c: master: Enable runtime PM for master controller
  i3c: master: svc: fix invalidate IBI type and miss call client IBI handler
  i3c: master: svc: change ENXIO to EAGAIN when IBI occurs during start frame
  i3c: Add comment for -EAGAIN in i3c_device_do_priv_xfers()
 2024-05-25 13:28:29 -07:00
Linus Torvalds
6951abe8f3 This pull request contains the following changes for JFFS2: 
- Fix Illegal memory access jffs2_free_inode()
 - Kernel-doc fixes
 - Print symbolic error names
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Merge tag 'jffs2-for-linus-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs

Pull jffs2 updates from Richard Weinberger:

 - Fix illegal memory access in jffs2_free_inode()

 - Kernel-doc fixes

 - print symbolic error names

* tag 'jffs2-for-linus-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
  jffs2: Fix potential illegal address access in jffs2_free_inode
  jffs2: Simplify the allocation of slab caches
  jffs2: nodemgmt: fix kernel-doc comments
  jffs2: print symbolic error name instead of error code
 2024-05-25 13:23:42 -07:00
Linus Torvalds
2313022ec5 This pull request contains the following changes for UML: 
- Fixes for -Wmissing-prototypes warnings and further cleanup
 - Remove callback returning void from rtc and virtio drivers
 - Fix bash location
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Merge tag 'uml-for-linus-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux

Pull UML updates from Richard Weinberger:

 - Fixes for -Wmissing-prototypes warnings and further cleanup

 - Remove callback returning void from rtc and virtio drivers

 - Fix bash location

* tag 'uml-for-linus-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (26 commits)
  um: virtio_uml: Convert to platform remove callback returning void
  um: rtc: Convert to platform remove callback returning void
  um: Remove unused do_get_thread_area function
  um: Fix -Wmissing-prototypes warnings for __vdso_*
  um: Add an internal header shared among the user code
  um: Fix the declaration of kasan_map_memory
  um: Fix the -Wmissing-prototypes warning for get_thread_reg
  um: Fix the -Wmissing-prototypes warning for __switch_mm
  um: Fix -Wmissing-prototypes warnings for (rt_)sigreturn
  um: Stop tracking host PID in cpu_tasks
  um: process: remove unused 'n' variable
  um: vector: remove unused len variable/calculation
  um: vector: fix bpfflash parameter evaluation
  um: slirp: remove set but unused variable 'pid'
  um: signal: move pid variable where needed
  um: Makefile: use bash from the environment
  um: Add winch to winch_handlers before registering winch IRQ
  um: Fix -Wmissing-prototypes warnings for __warp_* and foo
  um: Fix -Wmissing-prototypes warnings for text_poke*
  um: Move declarations to proper headers
  ...
 2024-05-25 13:17:48 -07:00
Linus Torvalds
56fb6f9285 drm fixes for 6.10-rc1 
nouveau:
 - fix bo metadata uAPI for vm bind
 
 panthor:
 - Fixes for panthor's heap logical block.
 - Reset on unrecoverable fault
 - Fix VM references.
 - Reset fix.
 
 xlnx:
 - xlnx compile and doc fixes.
 
 amdgpu:
 - Handle vbios table integrated info v2.3
 
 amdkfd:
 - Handle duplicate BOs in reserve_bo_and_cond_vms
 - Handle memory limitations on small APUs
 
 dp/mst:
 - MST null deref fix.
 
 bridge:
 - Don't let next bridge create connector in adv7511 to make probe work.
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Merge tag 'drm-next-2024-05-25' of https://gitlab.freedesktop.org/drm/kernel

Pull drm fixes from Dave Airlie:
 "Some fixes for the end of the merge window, mostly amdgpu and panthor,
  with one nouveau uAPI change that fixes a bad decision we made a few
  months back.

  nouveau:
   - fix bo metadata uAPI for vm bind

  panthor:
   - Fixes for panthor's heap logical block.
   - Reset on unrecoverable fault
   - Fix VM references.
   - Reset fix.

  xlnx:
   - xlnx compile and doc fixes.

  amdgpu:
   - Handle vbios table integrated info v2.3

  amdkfd:
   - Handle duplicate BOs in reserve_bo_and_cond_vms
   - Handle memory limitations on small APUs

  dp/mst:
   - MST null deref fix.

  bridge:
   - Don't let next bridge create connector in adv7511 to make probe
     work"

* tag 'drm-next-2024-05-25' of https://gitlab.freedesktop.org/drm/kernel:
  drm/amdgpu/atomfirmware: add intergrated info v2.3 table
  drm/mst: Fix NULL pointer dereference at drm_dp_add_payload_part2
  drm/amdkfd: Let VRAM allocations go to GTT domain on small APUs
  drm/amdkfd: handle duplicate BOs in reserve_bo_and_cond_vms
  drm/bridge: adv7511: Attach next bridge without creating connector
  drm/buddy: Fix the warn on's during force merge
  drm/nouveau: use tile_mode and pte_kind for VM_BIND bo allocations
  drm/panthor: Call panthor_sched_post_reset() even if the reset failed
  drm/panthor: Reset the FW VM to NULL on unplug
  drm/panthor: Keep a ref to the VM at the panthor_kernel_bo level
  drm/panthor: Force an immediate reset on unrecoverable faults
  drm/panthor: Document drm_panthor_tiler_heap_destroy::handle validity constraints
  drm/panthor: Fix an off-by-one in the heap context retrieval logic
  drm/panthor: Relax the constraints on the tiler chunk size
  drm/panthor: Make sure the tiler initial/max chunks are consistent
  drm/panthor: Fix tiler OOM handling to allow incremental rendering
  drm: xlnx: zynqmp_dpsub: Fix compilation error
  drm: xlnx: zynqmp_dpsub: Fix few function comments
 2024-05-24 17:28:02 -07:00
David Howells
93a4315512 cifs: Fix missing set of remote_i_size 
Occasionally, the generic/001 xfstest will fail indicating corruption in
one of the copy chains when run on cifs against a server that supports
FSCTL_DUPLICATE_EXTENTS_TO_FILE (eg. Samba with a share on btrfs).  The
problem is that the remote_i_size value isn't updated by cifs_setsize()
when called by smb2_duplicate_extents(), but i_size *is*.

This may cause cifs_remap_file_range() to then skip the bit after calling
->duplicate_extents() that sets sizes.

Fix this by calling netfs_resize_file() in smb2_duplicate_extents() before
calling cifs_setsize() to set i_size.

This means we don't then need to call netfs_resize_file() upon return from
->duplicate_extents(), but we also fix the test to compare against the pre-dup
inode size.

[Note that this goes back before the addition of remote_i_size with the
netfs_inode struct.  It should probably have been setting cifsi->server_eof
previously.]

Fixes: cfc63fc812 ("smb3: fix cached file size problems in duplicate extents (reflink)")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Paulo Alcantara <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: netfs@lists.linux.dev
Signed-off-by: Steve French <stfrench@microsoft.com>
 2024-05-24 16:05:56 -05:00
David Howells
8a16072335 cifs: Fix smb3_insert_range() to move the zero_point 
Fix smb3_insert_range() to move the zero_point over to the new EOF.
Without this, generic/147 fails as reads of data beyond the old EOF point
return zeroes.

Fixes: 3ee1a1fc39 ("cifs: Cut over to using netfslib")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: netfs@lists.linux.dev
Signed-off-by: Steve French <stfrench@microsoft.com>
 2024-05-24 16:04:36 -05:00
Linus Torvalds
0b32d436c0 Jeff Xu's implementation of the mseal() syscall. 
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Merge tag 'mm-stable-2024-05-24-11-49' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more mm updates from Andrew Morton:
 "Jeff Xu's implementation of the mseal() syscall"

* tag 'mm-stable-2024-05-24-11-49' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  selftest mm/mseal read-only elf memory segment
  mseal: add documentation
  selftest mm/mseal memory sealing
  mseal: add mseal syscall
  mseal: wire up mseal syscall
 2024-05-24 12:47:28 -07:00
Chengming Zhou
90e8234988 mm/ksm: fix possible UAF of stable_node 
The commit 2c653d0ee2 ("ksm: introduce ksm_max_page_sharing per page
deduplication limit") introduced a possible failure case in the
stable_tree_insert(), where we may free the new allocated stable_node_dup
if we fail to prepare the missing chain node.

Then that kfolio return and unlock with a freed stable_node set...  And
any MM activities can come in to access kfolio->mapping, so UAF.

Fix it by moving folio_set_stable_node() to the end after stable_node
is inserted successfully.

Link: https://lkml.kernel.org/r/20240513-b4-ksm-stable-node-uaf-v1-1-f687de76f452@linux.dev
Fixes: 2c653d0ee2 ("ksm: introduce ksm_max_page_sharing per page deduplication limit")
Signed-off-by: Chengming Zhou <chengming.zhou@linux.dev>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Stefan Roesch <shr@devkernel.io>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:08 -07:00
Miaohe Lin
8cf360b9d6 mm/memory-failure: fix handling of dissolved but not taken off from buddy pages 
When I did memory failure tests recently, below panic occurs:

page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8cee00
flags: 0x6fffe0000000000(node=1|zone=2|lastcpupid=0x7fff)
raw: 06fffe0000000000 dead000000000100 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000009 00000000ffffffff 0000000000000000
page dumped because: VM_BUG_ON_PAGE(!PageBuddy(page))
------------[ cut here ]------------
kernel BUG at include/linux/page-flags.h:1009!
invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
RIP: 0010:__del_page_from_free_list+0x151/0x180
RSP: 0018:ffffa49c90437998 EFLAGS: 00000046
RAX: 0000000000000035 RBX: 0000000000000009 RCX: ffff8dd8dfd1c9c8
RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff8dd8dfd1c9c0
RBP: ffffd901233b8000 R08: ffffffffab5511f8 R09: 0000000000008c69
R10: 0000000000003c15 R11: ffffffffab5511f8 R12: ffff8dd8fffc0c80
R13: 0000000000000001 R14: ffff8dd8fffc0c80 R15: 0000000000000009
FS:  00007ff916304740(0000) GS:ffff8dd8dfd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055eae50124c8 CR3: 00000008479e0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __rmqueue_pcplist+0x23b/0x520
 get_page_from_freelist+0x26b/0xe40
 __alloc_pages_noprof+0x113/0x1120
 __folio_alloc_noprof+0x11/0xb0
 alloc_buddy_hugetlb_folio.isra.0+0x5a/0x130
 __alloc_fresh_hugetlb_folio+0xe7/0x140
 alloc_pool_huge_folio+0x68/0x100
 set_max_huge_pages+0x13d/0x340
 hugetlb_sysctl_handler_common+0xe8/0x110
 proc_sys_call_handler+0x194/0x280
 vfs_write+0x387/0x550
 ksys_write+0x64/0xe0
 do_syscall_64+0xc2/0x1d0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff916114887
RSP: 002b:00007ffec8a2fd78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055eae500e350 RCX: 00007ff916114887
RDX: 0000000000000004 RSI: 000055eae500e390 RDI: 0000000000000003
RBP: 000055eae50104c0 R08: 0000000000000000 R09: 000055eae50104c0
R10: 0000000000000077 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000004 R14: 00007ff916216b80 R15: 00007ff916216a00
 </TASK>
Modules linked in: mce_inject hwpoison_inject
---[ end trace 0000000000000000 ]---

And before the panic, there had an warning about bad page state:

BUG: Bad page state in process page-types  pfn:8cee00
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8cee00
flags: 0x6fffe0000000000(node=1|zone=2|lastcpupid=0x7fff)
page_type: 0xffffff7f(buddy)
raw: 06fffe0000000000 ffffd901241c0008 ffffd901240f8008 0000000000000000
raw: 0000000000000000 0000000000000009 00000000ffffff7f 0000000000000000
page dumped because: nonzero mapcount
Modules linked in: mce_inject hwpoison_inject
CPU: 8 PID: 154211 Comm: page-types Not tainted 6.9.0-rc4-00499-g5544ec3178e2-dirty #22
Call Trace:
 <TASK>
 dump_stack_lvl+0x83/0xa0
 bad_page+0x63/0xf0
 free_unref_page+0x36e/0x5c0
 unpoison_memory+0x50b/0x630
 simple_attr_write_xsigned.constprop.0.isra.0+0xb3/0x110
 debugfs_attr_write+0x42/0x60
 full_proxy_write+0x5b/0x80
 vfs_write+0xcd/0x550
 ksys_write+0x64/0xe0
 do_syscall_64+0xc2/0x1d0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f189a514887
RSP: 002b:00007ffdcd899718 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f189a514887
RDX: 0000000000000009 RSI: 00007ffdcd899730 RDI: 0000000000000003
RBP: 00007ffdcd8997a0 R08: 0000000000000000 R09: 00007ffdcd8994b2
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdcda199a8
R13: 0000000000404af1 R14: 000000000040ad78 R15: 00007f189a7a5040
 </TASK>

The root cause should be the below race:

 memory_failure
  try_memory_failure_hugetlb
   me_huge_page
    __page_handle_poison
     dissolve_free_hugetlb_folio
     drain_all_pages -- Buddy page can be isolated e.g. for compaction.
     take_page_off_buddy -- Failed as page is not in the buddy list.
	     -- Page can be putback into buddy after compaction.
    page_ref_inc -- Leads to buddy page with refcnt = 1.

Then unpoison_memory() can unpoison the page and send the buddy page back
into buddy list again leading to the above bad page state warning.  And
bad_page() will call page_mapcount_reset() to remove PageBuddy from buddy
page leading to later VM_BUG_ON_PAGE(!PageBuddy(page)) when trying to
allocate this page.

Fix this issue by only treating __page_handle_poison() as successful when
it returns 1.

Link: https://lkml.kernel.org/r/20240523071217.1696196-1-linmiaohe@huawei.com
Fixes: ceaf8fbea7 ("mm, hwpoison: skip raw hwpoison page in freeing 1GB hugepage")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:08 -07:00
Yuanyuan Zhong
6d065f507d mm: /proc/pid/smaps_rollup: avoid skipping vma after getting mmap_lock again 
After switching smaps_rollup to use VMA iterator, searching for next entry
is part of the condition expression of the do-while loop.  So the current
VMA needs to be addressed before the continue statement.

Otherwise, with some VMAs skipped, userspace observed memory
consumption from /proc/pid/smaps_rollup will be smaller than the sum of
the corresponding fields from /proc/pid/smaps.

Link: https://lkml.kernel.org/r/20240523183531.2535436-1-yzhong@purestorage.com
Fixes: c4c84f0628 ("fs/proc/task_mmu: stop using linked list and highest_vm_end")
Signed-off-by: Yuanyuan Zhong <yzhong@purestorage.com>
Reviewed-by: Mohamed Khalfella <mkhalfella@purestorage.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:07 -07:00
Ryusuke Konishi
eb85dace89 nilfs2: fix potential hang in nilfs_detach_log_writer() 
Syzbot has reported a potential hang in nilfs_detach_log_writer() called
during nilfs2 unmount.

Analysis revealed that this is because nilfs_segctor_sync(), which
synchronizes with the log writer thread, can be called after
nilfs_segctor_destroy() terminates that thread, as shown in the call trace
below:

nilfs_detach_log_writer
  nilfs_segctor_destroy
    nilfs_segctor_kill_thread  --> Shut down log writer thread
    flush_work
      nilfs_iput_work_func
        nilfs_dispose_list
          iput
            nilfs_evict_inode
              nilfs_transaction_commit
                nilfs_construct_segment (if inode needs sync)
                  nilfs_segctor_sync  --> Attempt to synchronize with
                                          log writer thread
                           *** DEADLOCK ***

Fix this issue by changing nilfs_segctor_sync() so that the log writer
thread returns normally without synchronizing after it terminates, and by
forcing tasks that are already waiting to complete once after the thread
terminates.

The skipped inode metadata flushout will then be processed together in the
subsequent cleanup work in nilfs_segctor_destroy().

Link: https://lkml.kernel.org/r/20240520132621.4054-4-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+e3973c409251e136fdd0@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=e3973c409251e136fdd0
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Cc: "Bai, Shuangpeng" <sjb7183@psu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:07 -07:00
Ryusuke Konishi
936184eadd nilfs2: fix unexpected freezing of nilfs_segctor_sync() 
A potential and reproducible race issue has been identified where
nilfs_segctor_sync() would block even after the log writer thread writes a
checkpoint, unless there is an interrupt or other trigger to resume log
writing.

This turned out to be because, depending on the execution timing of the
log writer thread running in parallel, the log writer thread may skip
responding to nilfs_segctor_sync(), which causes a call to schedule()
waiting for completion within nilfs_segctor_sync() to lose the opportunity
to wake up.

The reason why waking up the task waiting in nilfs_segctor_sync() may be
skipped is that updating the request generation issued using a shared
sequence counter and adding an wait queue entry to the request wait queue
to the log writer, are not done atomically.  There is a possibility that
log writing and request completion notification by nilfs_segctor_wakeup()
may occur between the two operations, and in that case, the wait queue
entry is not yet visible to nilfs_segctor_wakeup() and the wake-up of
nilfs_segctor_sync() will be carried over until the next request occurs.

Fix this issue by performing these two operations simultaneously within
the lock section of sc_state_lock.  Also, following the memory barrier
guidelines for event waiting loops, move the call to set_current_state()
in the same location into the event waiting loop to ensure that a memory
barrier is inserted just before the event condition determination.

Link: https://lkml.kernel.org/r/20240520132621.4054-3-konishi.ryusuke@gmail.com
Fixes: 9ff05123e3 ("nilfs2: segment constructor")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Cc: "Bai, Shuangpeng" <sjb7183@psu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:07 -07:00
Ryusuke Konishi
f5d4e04634 nilfs2: fix use-after-free of timer for log writer thread 
Patch series "nilfs2: fix log writer related issues".

This bug fix series covers three nilfs2 log writer-related issues,
including a timer use-after-free issue and potential deadlock issue on
unmount, and a potential freeze issue in event synchronization found
during their analysis.  Details are described in each commit log.


This patch (of 3):

A use-after-free issue has been reported regarding the timer sc_timer on
the nilfs_sc_info structure.

The problem is that even though it is used to wake up a sleeping log
writer thread, sc_timer is not shut down until the nilfs_sc_info structure
is about to be freed, and is used regardless of the thread's lifetime.

Fix this issue by limiting the use of sc_timer only while the log writer
thread is alive.

Link: https://lkml.kernel.org/r/20240520132621.4054-1-konishi.ryusuke@gmail.com
Link: https://lkml.kernel.org/r/20240520132621.4054-2-konishi.ryusuke@gmail.com
Fixes: fdce895ea5 ("nilfs2: change sc_timer from a pointer to an embedded one in struct nilfs_sc_info")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: "Bai, Shuangpeng" <sjb7183@psu.edu>
Closes: https://groups.google.com/g/syzkaller/c/MK_LYqtt8ko/m/8rgdWeseAwAJ
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:07 -07:00
Michael Ellerman
1901472fa8 selftests/mm: fix build warnings on ppc64 
Fix warnings like:

  In file included from uffd-unit-tests.c:8:
  uffd-unit-tests.c: In function `uffd_poison_handle_fault':
  uffd-common.h:45:33: warning: format `%llu' expects argument of type
  `long long unsigned int', but argument 3 has type `__u64' {aka `long
  unsigned int'} [-Wformat=]

By switching to unsigned long long for u64 for ppc64 builds.

Link: https://lkml.kernel.org/r/20240521030219.57439-1-mpe@ellerman.id.au
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:06 -07:00
Will Deacon
b1480ed230 arm64: patching: fix handling of execmem addresses 
Klara Modin reported warnings for a kernel configured with BPF_JIT but
without MODULES:

[   44.131296] Trying to vfree() bad address (000000004a17c299)
[   44.138024] WARNING: CPU: 1 PID: 193 at mm/vmalloc.c:3189 remove_vm_area (mm/vmalloc.c:3189 (discriminator 1))
[   44.146675] CPU: 1 PID: 193 Comm: kworker/1:2 Tainted: G      D W          6.9.0-01786-g2c9e5d4a0082 #25
[   44.158229] Hardware name: Raspberry Pi 3 Model B (DT)
[   44.164433] Workqueue: events bpf_prog_free_deferred
[   44.170492] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[   44.178601] pc : remove_vm_area (mm/vmalloc.c:3189 (discriminator 1))
[   44.183705] lr : remove_vm_area (mm/vmalloc.c:3189 (discriminator 1))
[   44.188772] sp : ffff800082a13c70
[   44.193112] x29: ffff800082a13c70 x28: 0000000000000000 x27: 0000000000000000
[   44.201384] x26: 0000000000000000 x25: ffff00003a44efa0 x24: 00000000d4202000
[   44.209658] x23: ffff800081223dd0 x22: ffff00003a198a40 x21: ffff8000814dd880
[   44.217924] x20: 00000000d4202000 x19: ffff8000814dd880 x18: 0000000000000006
[   44.226206] x17: 0000000000000000 x16: 0000000000000020 x15: 0000000000000002
[   44.234460] x14: ffff8000811a6370 x13: 0000000020000000 x12: 0000000000000000
[   44.242710] x11: ffff8000811a6370 x10: 0000000000000144 x9 : ffff8000811fe370
[   44.250959] x8 : 0000000000017fe8 x7 : 00000000fffff000 x6 : ffff8000811fe370
[   44.259206] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000
[   44.267457] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000002203240
[   44.275703] Call trace:
[   44.279158] remove_vm_area (mm/vmalloc.c:3189 (discriminator 1))
[   44.283858] vfree (mm/vmalloc.c:3322)
[   44.287835] execmem_free (mm/execmem.c:70)
[   44.292347] bpf_jit_free_exec+0x10/0x1c
[   44.297283] bpf_prog_pack_free (kernel/bpf/core.c:1006)
[   44.302457] bpf_jit_binary_pack_free (kernel/bpf/core.c:1195)
[   44.307951] bpf_jit_free (include/linux/filter.h:1083 arch/arm64/net/bpf_jit_comp.c:2474)
[   44.312342] bpf_prog_free_deferred (kernel/bpf/core.c:2785)
[   44.317785] process_one_work (kernel/workqueue.c:3273)
[   44.322684] worker_thread (kernel/workqueue.c:3342 (discriminator 2) kernel/workqueue.c:3429 (discriminator 2))
[   44.327292] kthread (kernel/kthread.c:388)
[   44.331342] ret_from_fork (arch/arm64/kernel/entry.S:861)

The problem is because bpf_arch_text_copy() silently fails to write to the
read-only area as a result of patch_map() faulting and the resulting
-EFAULT being chucked away.

Update patch_map() to use CONFIG_EXECMEM instead of
CONFIG_STRICT_MODULE_RWX to check for vmalloc addresses.

Link: https://lkml.kernel.org/r/20240521213813.703309-1-rppt@kernel.org
Fixes: 2c9e5d4a00 ("bpf: remove CONFIG_BPF_JIT dependency on CONFIG_MODULES of")
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Reported-by: Klara Modin <klarasmodin@gmail.com>
Closes: https://lore.kernel.org/all/7983fbbf-0127-457c-9394-8d6e4299c685@gmail.com
Tested-by: Klara Modin <klarasmodin@gmail.com>
Cc: Björn Töpel <bjorn@kernel.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:06 -07:00
Dev Jain
fb9293b6b0 selftests/mm: compaction_test: fix bogus test success and reduce probability of OOM-killer invocation 
Reset nr_hugepages to zero before the start of the test.

If a non-zero number of hugepages is already set before the start of the
test, the following problems arise:

 - The probability of the test getting OOM-killed increases.  Proof:
   The test wants to run on 80% of available memory to prevent OOM-killing
   (see original code comments).  Let the value of mem_free at the start
   of the test, when nr_hugepages = 0, be x.  In the other case, when
   nr_hugepages > 0, let the memory consumed by hugepages be y.  In the
   former case, the test operates on 0.8 * x of memory.  In the latter,
   the test operates on 0.8 * (x - y) of memory, with y already filled,
   hence, memory consumed is y + 0.8 * (x - y) = 0.8 * x + 0.2 * y > 0.8 *
   x.  Q.E.D

 - The probability of a bogus test success increases.  Proof: Let the
   memory consumed by hugepages be greater than 25% of x, with x and y
   defined as above.  The definition of compaction_index is c_index = (x -
   y)/z where z is the memory consumed by hugepages after trying to
   increase them again.  In check_compaction(), we set the number of
   hugepages to zero, and then increase them back; the probability that
   they will be set back to consume at least y amount of memory again is
   very high (since there is not much delay between the two attempts of
   changing nr_hugepages).  Hence, z >= y > (x/4) (by the 25% assumption).
   Therefore, c_index = (x - y)/z <= (x - y)/y = x/y - 1 < 4 - 1 = 3
   hence, c_index can always be forced to be less than 3, thereby the test
   succeeding always.  Q.E.D

Link: https://lkml.kernel.org/r/20240521074358.675031-4-dev.jain@arm.com
Fixes: bd67d5c15c ("Test compaction of mlocked memory")
Signed-off-by: Dev Jain <dev.jain@arm.com>
Cc: <stable@vger.kernel.org>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Sri Jayaramappa <sjayaram@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:06 -07:00
Dev Jain
9ad665ef55 selftests/mm: compaction_test: fix incorrect write of zero to nr_hugepages 
Currently, the test tries to set nr_hugepages to zero, but that is not
actually done because the file offset is not reset after read().  Fix that
using lseek().

Link: https://lkml.kernel.org/r/20240521074358.675031-3-dev.jain@arm.com
Fixes: bd67d5c15c ("Test compaction of mlocked memory")
Signed-off-by: Dev Jain <dev.jain@arm.com>
Cc: <stable@vger.kernel.org>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Sri Jayaramappa <sjayaram@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:06 -07:00
Dev Jain
d4202e66a4 selftests/mm: compaction_test: fix bogus test success on Aarch64 
Patch series "Fixes for compaction_test", v2.

The compaction_test memory selftest introduces fragmentation in memory
and then tries to allocate as many hugepages as possible. This series
addresses some problems.

On Aarch64, if nr_hugepages == 0, then the test trivially succeeds since
compaction_index becomes 0, which is less than 3, due to no division by
zero exception being raised. We fix that by checking for division by
zero.

Secondly, correctly set the number of hugepages to zero before trying
to set a large number of them.

Now, consider a situation in which, at the start of the test, a non-zero
number of hugepages have been already set (while running the entire
selftests/mm suite, or manually by the admin). The test operates on 80%
of memory to avoid OOM-killer invocation, and because some memory is
already blocked by hugepages, it would increase the chance of OOM-killing.
Also, since mem_free used in check_compaction() is the value before we
set nr_hugepages to zero, the chance that the compaction_index will
be small is very high if the preset nr_hugepages was high, leading to a
bogus test success.


This patch (of 3):

Currently, if at runtime we are not able to allocate a huge page, the test
will trivially pass on Aarch64 due to no exception being raised on
division by zero while computing compaction_index.  Fix that by checking
for nr_hugepages == 0.  Anyways, in general, avoid a division by zero by
exiting the program beforehand.  While at it, fix a typo, and handle the
case where the number of hugepages may overflow an integer.

Link: https://lkml.kernel.org/r/20240521074358.675031-1-dev.jain@arm.com
Link: https://lkml.kernel.org/r/20240521074358.675031-2-dev.jain@arm.com
Fixes: bd67d5c15c ("Test compaction of mlocked memory")
Signed-off-by: Dev Jain <dev.jain@arm.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Sri Jayaramappa <sjayaram@akamai.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:05 -07:00
Satya Priya Kakitapalli
c17d39f565 mailmap: update email address for Satya Priya 
Update mailmap with my latest email ID, quic_c_skakit@quicinc.com
is no longer active.

Link: https://lkml.kernel.org/r/20240515-mailmap-update-v1-1-df4853f757a3@quicinc.com
Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
Cc: Ajit Pandey <quic_ajipan@quicinc.com>
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Imran Shaik <quic_imrashai@quicinc.com>
Cc: Jagadeesh Kona <quic_jkona@quicinc.com>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: Taniya Das <quic_tdas@quicinc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:05 -07:00
Miaohe Lin
fe6f86f4b4 mm/huge_memory: don't unpoison huge_zero_folio 
When I did memory failure tests recently, below panic occurs:

 kernel BUG at include/linux/mm.h:1135!
 invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
 CPU: 9 PID: 137 Comm: kswapd1 Not tainted 6.9.0-rc4-00491-gd5ce28f156fe-dirty #14
 RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0
 RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246
 RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8
 RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0
 RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492
 R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000
 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00
 FS:  0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0
 Call Trace:
  <TASK>
  do_shrink_slab+0x14f/0x6a0
  shrink_slab+0xca/0x8c0
  shrink_node+0x2d0/0x7d0
  balance_pgdat+0x33a/0x720
  kswapd+0x1f3/0x410
  kthread+0xd5/0x100
  ret_from_fork+0x2f/0x50
  ret_from_fork_asm+0x1a/0x30
  </TASK>
 Modules linked in: mce_inject hwpoison_inject
 ---[ end trace 0000000000000000 ]---
 RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0
 RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246
 RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8
 RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0
 RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492
 R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000
 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00
 FS:  0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0

The root cause is that HWPoison flag will be set for huge_zero_folio
without increasing the folio refcnt.  But then unpoison_memory() will
decrease the folio refcnt unexpectedly as it appears like a successfully
hwpoisoned folio leading to VM_BUG_ON_PAGE(page_ref_count(page) == 0) when
releasing huge_zero_folio.

Skip unpoisoning huge_zero_folio in unpoison_memory() to fix this issue. 
We're not prepared to unpoison huge_zero_folio yet.

Link: https://lkml.kernel.org/r/20240516122608.22610-1-linmiaohe@huawei.com
Fixes: 478d134e95 ("mm/huge_memory: do not overkill when splitting huge_zero_page")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Xu Yu <xuyu@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:05 -07:00
Andrey Konovalov
2e577732e8 kasan, fortify: properly rename memintrinsics 
After commit 69d4c0d321 ("entry, kasan, x86: Disallow overriding mem*()
functions") and the follow-up fixes, with CONFIG_FORTIFY_SOURCE enabled,
even though the compiler instruments meminstrinsics by generating calls to
__asan/__hwasan_ prefixed functions, FORTIFY_SOURCE still uses
uninstrumented memset/memmove/memcpy as the underlying functions.

As a result, KASAN cannot detect bad accesses in memset/memmove/memcpy. 
This also makes KASAN tests corrupt kernel memory and cause crashes.

To fix this, use __asan_/__hwasan_memset/memmove/memcpy as the underlying
functions whenever appropriate.  Do this only for the instrumented code
(as indicated by __SANITIZE_ADDRESS__).

Link: https://lkml.kernel.org/r/20240517130118.759301-1-andrey.konovalov@linux.dev
Fixes: 69d4c0d321 ("entry, kasan, x86: Disallow overriding mem*() functions")
Fixes: 51287dcb00 ("kasan: emit different calls for instrumentable memintrinsics")
Fixes: 36be5cba99 ("kasan: treat meminstrinsic as builtins in uninstrumented files")
Signed-off-by: Andrey Konovalov <andreyknvl@gmail.com>
Reported-by: Erhard Furtner <erhard_f@mailbox.org>
Reported-by: Nico Pache <npache@redhat.com>
Closes: https://lore.kernel.org/all/20240501144156.17e65021@outsider.home/
Reviewed-by: Marco Elver <elver@google.com>
Tested-by: Nico Pache <npache@redhat.com>
Acked-by: Nico Pache <npache@redhat.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Daniel Axtens <dja@axtens.net>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:05 -07:00
Suren Baghdasaryan
a38568a0b4 lib: add version into /proc/allocinfo output 
Add version string and a header at the beginning of /proc/allocinfo to
allow later format changes.  Example output:

> head /proc/allocinfo
allocinfo - version: 1.0
#     <size>  <calls> <tag info>
           0        0 init/main.c:1314 func:do_initcalls
           0        0 init/do_mounts.c:353 func:mount_nodev_root
           0        0 init/do_mounts.c:187 func:mount_root_generic
           0        0 init/do_mounts.c:158 func:do_mount_root
           0        0 init/initramfs.c:493 func:unpack_to_rootfs
           0        0 init/initramfs.c:492 func:unpack_to_rootfs
           0        0 init/initramfs.c:491 func:unpack_to_rootfs
         512        1 arch/x86/events/rapl.c:681 func:init_rapl_pmus
         128        1 arch/x86/events/rapl.c:571 func:rapl_cpu_online

[akpm@linux-foundation.org: remove stray newline from struct allocinfo_private]
Link: https://lkml.kernel.org/r/20240514163128.3662251-1-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:05 -07:00
Hailong.Liu
8e0545c83d mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL 
commit a421ef3030 ("mm: allow !GFP_KERNEL allocations for kvmalloc")
includes support for __GFP_NOFAIL, but it presents a conflict with commit
dd544141b9 ("vmalloc: back off when the current task is OOM-killed").  A
possible scenario is as follows:

process-a
__vmalloc_node_range(GFP_KERNEL | __GFP_NOFAIL)
    __vmalloc_area_node()
        vm_area_alloc_pages()
		--> oom-killer send SIGKILL to process-a
        if (fatal_signal_pending(current)) break;
--> return NULL;

To fix this, do not check fatal_signal_pending() in vm_area_alloc_pages()
if __GFP_NOFAIL set.

This issue occurred during OPLUS KASAN TEST. Below is part of the log
-> oom-killer sends signal to process
[65731.222840] [ T1308] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/apps/uid_10198,task=gs.intelligence,pid=32454,uid=10198

[65731.259685] [T32454] Call trace:
[65731.259698] [T32454]  dump_backtrace+0xf4/0x118
[65731.259734] [T32454]  show_stack+0x18/0x24
[65731.259756] [T32454]  dump_stack_lvl+0x60/0x7c
[65731.259781] [T32454]  dump_stack+0x18/0x38
[65731.259800] [T32454]  mrdump_common_die+0x250/0x39c [mrdump]
[65731.259936] [T32454]  ipanic_die+0x20/0x34 [mrdump]
[65731.260019] [T32454]  atomic_notifier_call_chain+0xb4/0xfc
[65731.260047] [T32454]  notify_die+0x114/0x198
[65731.260073] [T32454]  die+0xf4/0x5b4
[65731.260098] [T32454]  die_kernel_fault+0x80/0x98
[65731.260124] [T32454]  __do_kernel_fault+0x160/0x2a8
[65731.260146] [T32454]  do_bad_area+0x68/0x148
[65731.260174] [T32454]  do_mem_abort+0x151c/0x1b34
[65731.260204] [T32454]  el1_abort+0x3c/0x5c
[65731.260227] [T32454]  el1h_64_sync_handler+0x54/0x90
[65731.260248] [T32454]  el1h_64_sync+0x68/0x6c

[65731.260269] [T32454]  z_erofs_decompress_queue+0x7f0/0x2258
--> be->decompressed_pages = kvcalloc(be->nr_pages, sizeof(struct page *), GFP_KERNEL | __GFP_NOFAIL);
	kernel panic by NULL pointer dereference.
	erofs assume kvmalloc with __GFP_NOFAIL never return NULL.
[65731.260293] [T32454]  z_erofs_runqueue+0xf30/0x104c
[65731.260314] [T32454]  z_erofs_readahead+0x4f0/0x968
[65731.260339] [T32454]  read_pages+0x170/0xadc
[65731.260364] [T32454]  page_cache_ra_unbounded+0x874/0xf30
[65731.260388] [T32454]  page_cache_ra_order+0x24c/0x714
[65731.260411] [T32454]  filemap_fault+0xbf0/0x1a74
[65731.260437] [T32454]  __do_fault+0xd0/0x33c
[65731.260462] [T32454]  handle_mm_fault+0xf74/0x3fe0
[65731.260486] [T32454]  do_mem_abort+0x54c/0x1b34
[65731.260509] [T32454]  el0_da+0x44/0x94
[65731.260531] [T32454]  el0t_64_sync_handler+0x98/0xb4
[65731.260553] [T32454]  el0t_64_sync+0x198/0x19c

Link: https://lkml.kernel.org/r/20240510100131.1865-1-hailong.liu@oppo.com
Fixes: 9376130c39 ("mm/vmalloc: add support for __GFP_NOFAIL")
Signed-off-by: Hailong.Liu <hailong.liu@oppo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Suggested-by: Barry Song <21cnbao@gmail.com>
Reported-by: Oven <liyangouwen1@oppo.com>
Reviewed-by: Barry Song <baohua@kernel.org>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Chao Yu <chao@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Gao Xiang <xiang@kernel.org>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-24 11:55:04 -07:00
Linus Torvalds
f1f9984fdc RISC-V Patches for the 6.10 Merge Window, Part 2 
* The compression format used for boot images is now configurable at
   build time, and these formats are shown in `make help`.
 * access_ok() has been optimized.
 * A pair of performance bugs have been fixed in the uaccess handlers.
 * Various fixes and cleanups, including one for the IMSIC build failure
   and one for the early-boot ftrace illegal NOPs bug.
 -----BEGIN PGP SIGNATURE-----
 
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Merge tag 'riscv-for-linus-6.10-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:

 - The compression format used for boot images is now configurable at
   build time, and these formats are shown in `make help`

 - access_ok() has been optimized

 - A pair of performance bugs have been fixed in the uaccess handlers

 - Various fixes and cleanups, including one for the IMSIC build failure
   and one for the early-boot ftrace illegal NOPs bug

* tag 'riscv-for-linus-6.10-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: Fix early ftrace nop patching
  irqchip: riscv-imsic: Fixup riscv_ipi_set_virq_range() conflict
  riscv: selftests: Add signal handling vector tests
  riscv: mm: accelerate pagefault when badaccess
  riscv: uaccess: Relax the threshold for fast path
  riscv: uaccess: Allow the last potential unrolled copy
  riscv: typo in comment for get_f64_reg
  Use bool value in set_cpu_online()
  riscv: selftests: Add hwprobe binaries to .gitignore
  riscv: stacktrace: fixed walk_stackframe()
  ftrace: riscv: move from REGS to ARGS
  riscv: do not select MODULE_SECTIONS by default
  riscv: show help string for riscv-specific targets
  riscv: make image compression configurable
  riscv: cpufeature: Fix extension subset checking
  riscv: cpufeature: Fix thead vector hwcap removal
  riscv: rewrite __kernel_map_pages() to fix sleeping in invalid context
  riscv: force PAGE_SIZE linear mapping if debug_pagealloc is enabled
  riscv: Define TASK_SIZE_MAX for __access_ok()
  riscv: Remove PGDIR_SIZE_L3 and TASK_SIZE_MIN
 2024-05-24 10:46:35 -07:00
Linus Torvalds
9351f138d1 xen: branch for v6.10-rc1 
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Merge tag 'for-linus-6.10a-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from Juergen Gross:

 - a small cleanup in the drivers/xen/xenbus Makefile

 - a fix of the Xen xenstore driver to improve connecting to a late
   started Xenstore

 - an enhancement for better support of ballooning in PVH guests

 - a cleanup using try_cmpxchg() instead of open coding it

* tag 'for-linus-6.10a-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  drivers/xen: Improve the late XenStore init protocol
  xen/xenbus: Use *-y instead of *-objs in Makefile
  xen/x86: add extra pages to unpopulated-alloc if available
  locking/x86/xen: Use try_cmpxchg() in xen_alloc_p2m_entry()
 2024-05-24 10:24:49 -07:00
Linus Torvalds
02c438bbff for-6.10-tag 
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Merge tag 'for-6.10-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull more btrfs updates from David Sterba:
 "A few more updates, mostly stability fixes or user visible changes:

   - fix race in zoned mode during device replace that can lead to
     use-after-free

   - update return codes and lower message levels for quota rescan where
     it's causing false alerts

   - fix unexpected qgroup id reuse under some conditions

   - fix condition when looking up extent refs

   - add option norecovery (removed in 6.8), the intended replacements
     haven't been used and some aplications still rely on the old one

   - build warning fixes"

* tag 'for-6.10-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: re-introduce 'norecovery' mount option
  btrfs: fix end of tree detection when searching for data extent ref
  btrfs: scrub: initialize ret in scrub_simple_mirror() to fix compilation warning
  btrfs: zoned: fix use-after-free due to race with dev replace
  btrfs: qgroup: fix qgroup id collision across mounts
  btrfs: qgroup: update rescan message levels and error codes
 2024-05-24 09:40:31 -07:00
Linus Torvalds
dcb9f48667 Changes since last update: 
- Convert metadata APIs to byte offsets;
 
  - Avoid allocating DEFLATE streams unnecessarily;
 
  - Some erofs_show_options() cleanup.
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Merge tag 'erofs-for-6.10-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs

Pull more erofs updates from Gao Xiang:
 "The main ones are metadata API conversion to byte offsets by Al Viro.

  Another patch gets rid of unnecessary memory allocation out of DEFLATE
  decompressor. The remaining one is a trivial cleanup.

   - Convert metadata APIs to byte offsets

   - Avoid allocating DEFLATE streams unnecessarily

   - Some erofs_show_options() cleanup"

* tag 'erofs-for-6.10-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
  erofs: avoid allocating DEFLATE streams before mounting
  z_erofs_pcluster_begin(): don't bother with rounding position down
  erofs: don't round offset down for erofs_read_metabuf()
  erofs: don't align offset for erofs_read_metabuf() (simple cases)
  erofs: mechanically convert erofs_read_metabuf() to offsets
  erofs: clean up erofs_show_options()
 2024-05-24 09:31:50 -07:00
Linus Torvalds
c40b1994b9 bcachefs fixes for 6.10-rc1 
Just a few syzbot fixes
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Merge tag 'bcachefs-2024-05-24' of https://evilpiepirate.org/git/bcachefs

Pull bcachefs fixes from Kent Overstreet:
 "Nothing exciting, just syzbot fixes (except for the one
  FMODE_CAN_ODIRECT patch).

  Looks like syzbot reports have slowed down; this is all catch up from
  two weeks of conferences.

  Next hardening project is using Thomas's error injection tooling to
  torture test repair"

* tag 'bcachefs-2024-05-24' of https://evilpiepirate.org/git/bcachefs:
  bcachefs: Fix race path in bch2_inode_insert()
  bcachefs: Ensure we're RW before journalling
  bcachefs: Fix shutdown ordering
  bcachefs: Fix unsafety in bch2_dirent_name_bytes()
  bcachefs: Fix stack oob in __bch2_encrypt_bio()
  bcachefs: Fix btree_trans leak in bch2_readahead()
  bcachefs: Fix bogus verify_replicas_entry() assert
  bcachefs: Check for subvolues with bogus snapshot/inode fields
  bcachefs: bch2_checksum() returns 0 for unknown checksum type
  bcachefs: Fix bch2_alloc_ciphers()
  bcachefs: Add missing guard in bch2_snapshot_has_children()
  bcachefs: Fix missing parens in drop_locks_do()
  bcachefs: Improve bch2_assert_pos_locked()
  bcachefs: Fix shift overflows in replicas.c
  bcachefs: Fix shift overflow in btree_lost_data()
  bcachefs: Fix ref in trans_mark_dev_sbs() error path
  bcachefs: set FMODE_CAN_ODIRECT instead of a dummy direct_IO method
  bcachefs: Fix rcu splat in check_fix_ptrs()
 2024-05-24 09:07:22 -07:00
Linus Torvalds
9ea370f341 Input updates for v6.10-rc0 
- a change to input core to trim amount of keys data in modalias string
   in case when a device declares too many keys and they do not fit in
   uevent buffer instead of reporting an error which results in uevent
   not being generated at all
 
 - support for Machenike G5 Pro Controller added to xpad driver
 
 - support for FocalTech FT5452 and FT8719 added to edt-ft5x06
 
 - support for new SPMI vibrator added to pm8xxx-vibrator driver
 
 - missing locking added to cyapa touchpad driver
 
 - removal of unused fields in various driver structures
 
 - explicit initialization of i2c_device_id::driver_data to 0 dropped
   from input drivers
 
 - other assorted fixes and cleanups.
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Merge tag 'input-for-v6.10-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input updates from Dmitry Torokhov:

 - a change to input core to trim amount of keys data in modalias string
   in case when a device declares too many keys and they do not fit in
   uevent buffer instead of reporting an error which results in uevent
   not being generated at all

 - support for Machenike G5 Pro Controller added to xpad driver

 - support for FocalTech FT5452 and FT8719 added to edt-ft5x06

 - support for new SPMI vibrator added to pm8xxx-vibrator driver

 - missing locking added to cyapa touchpad driver

 - removal of unused fields in various driver structures

 - explicit initialization of i2c_device_id::driver_data to 0 dropped
   from input drivers

 - other assorted fixes and cleanups.

* tag 'input-for-v6.10-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (24 commits)
  Input: edt-ft5x06 - add support for FocalTech FT5452 and FT8719
  dt-bindings: input: touchscreen: edt-ft5x06: Document FT5452 and FT8719 support
  Input: xpad - add support for Machenike G5 Pro Controller
  Input: try trimming too long modalias strings
  Input: drop explicit initialization of struct i2c_device_id::driver_data to 0
  Input: zet6223 - remove an unused field in struct zet6223_ts
  Input: chipone_icn8505 - remove an unused field in struct icn8505_data
  Input: cros_ec_keyb - remove an unused field in struct cros_ec_keyb
  Input: lpc32xx-keys - remove an unused field in struct lpc32xx_kscan_drv
  Input: matrix_keypad - remove an unused field in struct matrix_keypad
  Input: tca6416-keypad - remove unused struct tca6416_drv_data
  Input: tca6416-keypad - remove an unused field in struct tca6416_keypad_chip
  Input: da7280 - remove an unused field in struct da7280_haptic
  Input: ff-core - prefer struct_size over open coded arithmetic
  Input: cyapa - add missing input core locking to suspend/resume functions
  input: pm8xxx-vibrator: add new SPMI vibrator support
  dt-bindings: input: qcom,pm8xxx-vib: add new SPMI vibrator module
  input: pm8xxx-vibrator: refactor to support new SPMI vibrator
  Input: pm8xxx-vibrator - correct VIB_MAX_LEVELS calculation
  Input: sur40 - convert le16 to cpu before use
  ...
 2024-05-24 09:01:21 -07:00
Linus Torvalds
041c9f71a4 sound fixes for 6.10-rc1 
A collection of small fixes for 6.10-rc1.  Most of changes are
 various device-specific fixes and quirks, while there are a few small
 changes in ALSA core timer and module / built-in fixes.
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Merge tag 'sound-fix-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes for 6.10-rc1. Most of changes are various
  device-specific fixes and quirks, while there are a few small changes
  in ALSA core timer and module / built-in fixes"

* tag 'sound-fix-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek: fix mute/micmute LEDs don't work for ProBook 440/460 G11.
  ALSA: core: Enable proc module when CONFIG_MODULES=y
  ALSA: core: Fix NULL module pointer assignment at card init
  ALSA: hda/realtek: Enable headset mic of JP-IK LEAP W502 with ALC897
  ASoC: dt-bindings: stm32: Ensure compatible pattern matches whole string
  ASoC: tas2781: Fix wrong loading calibrated data sequence
  ASoC: tas2552: Add TX path for capturing AUDIO-OUT data
  ALSA: usb-audio: Fix for sampling rates support for Mbox3
  Documentation: sound: Fix trailing whitespaces
  ALSA: timer: Set lower bound of start tick time
  ASoC: codecs: ES8326: solve hp and button detect issue
  ASoC: rt5645: mic-in detection threshold modification
  ASoC: Intel: sof_sdw_rt_sdca_jack_common: Use name_prefix for `-sdca` detection
 2024-05-24 08:48:51 -07:00
Linus Torvalds
e292ead0c9 Char/Misc bugfix for 6.10-rc1 
Here is one remaining bugfix for 6.10-rc1 that missed the 6.9-final
 merge window, and has been sitting in my tree and linux-next for quite a
 while now, but wasn't sent to you (my fault, travels...)
 
 It is a bugfix to resolve an error in the speakup code that could
 overflow a buffer.
 
 It has been in linux-next for a while with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.10-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc fix from Greg KH:
 "Here is one remaining bugfix for 6.10-rc1 that missed the 6.9-final
  merge window, and has been sitting in my tree and linux-next for quite
  a while now, but wasn't sent to you (my fault, travels...)

  It is a bugfix to resolve an error in the speakup code that could
  overflow a buffer.

  It has been in linux-next for a while with no reported problems"

* tag 'char-misc-6.10-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  speakup: Fix sizeof() vs ARRAY_SIZE() bug
 2024-05-24 08:43:25 -07:00