Commit Graph

1279395 Commits

Author SHA1 Message Date
SeongJae Park
e3b10a02ca Docs: Move clang-format from process/ to dev-tools/
'clang-format' is on 'Other material' section of 'process/index', but it
may fit more under 'dev-tools/' directory.  Move it.

Signed-off-by: SeongJae Park <sj@kernel.org>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Acked-by: Federico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240624185312.94537-5-sj@kernel.org
2024-06-26 16:36:00 -06:00
SeongJae Park
f9a4f4a0e1 Docs: Move magic-number from process to staging
'Other material' section on 'process/index' is for unsorted documents.
However we also have a dedicated place for the purpose, 'staging/'.
Move 'magic-number' from the section to 'staging/' directory.

Signed-off-by: SeongJae Park <sj@kernel.org>
Acked-by: Federico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240624185312.94537-4-sj@kernel.org
2024-06-26 16:36:00 -06:00
SeongJae Park
7400d25a0a Docs/process/index: Remove riscv/patch-acceptance from 'Other material' section
'patch-acceptance' on 'Other material' section of 'process/index', which
is for unsorted documents, is actually well organized under
'arch/riscv/' directory, and linked on the index document of the
directory.  Remove it from the 'Other material' section.

Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240624185312.94537-3-sj@kernel.org
2024-06-26 16:36:00 -06:00
SeongJae Park
346bc3d8cd Docs/process/index: Remove unaligned-memory-access from 'Other material'
'unaligned-memory-access document' is linked on 'Other material' section
of 'core-api/index', which is for unsorted documents.  But it is
actually well organized under 'core-api/' directory, and linked on the
'core-api/index'.  Remove it from 'Other material' section of
'process/index' document.

Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240624185312.94537-2-sj@kernel.org
2024-06-26 16:36:00 -06:00
Yanteng Si
292db12f60 docs/zh_CN: Add driver-api phy translation
Translate driver-api/phy.rst into Chinese.

commit d02aa181ee ("phy: Add devm_of_phy_optional_get() helper")

Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240625130909.3672446-1-siyanteng@loongson.cn
2024-06-26 16:23:40 -06:00
Thorsten Scherer
075136c1e9 doc:it_IT: Fix typo in Reviewed-by tag
Signed-off-by: Thorsten Scherer <t.scherer@eckelmann.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240625210455.13262-1-t.scherer@eckelmann.de
2024-06-26 16:23:05 -06:00
Dongliang Mu
2fca11bb46 docs/zh_CN: add back the missing part in the English version
The zh_CN kasan document misses the code change in commit eefe68280c
("kasan: Add documentation for CONFIG_KASAN_EXTRA_INFO").

Fix this by adding the translation of the missing part.

Note that this missing commit is found by checktransupdate.py

Signed-off-by: Dongliang Mu <dzm91@hust.edu.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240614140326.3028384-1-dzm91@hust.edu.cn
2024-06-17 16:46:11 -06:00
Thomas Huth
166d6019f9 Documentation: Remove the unused "tp720" from kernel-parameters.txt
The "tp720" switch once belonged to the ps2esdi driver, but this
driver has been removed a long time ago in 2008 in the commit
2af3e6017e ("The ps2esdi driver was marked as BROKEN more than two years ago due to being no longer working for some time.")
already, so let's remove it from the documentation now, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240617073322.40679-1-thuth@redhat.com
2024-06-17 16:45:24 -06:00
Thomas Huth
9b8b80b9f6 Documentation: Remove the unused "topology_updates" from kernel-parameters.txt
The "topology_updates" switch has been removed four years ago in commit
c30f931e89 ("powerpc/numa: remove ability to enable topology updates"),
so let's remove this from the documentation, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240617060848.38937-1-thuth@redhat.com
2024-06-17 16:44:36 -06:00
Dongliang Mu
4280517ebe docs/zh_CN: Update the translation of dev-tools/gdb-kernel-debugging
Update to commit 6b21943103 ("docs/scripts/gdb: add necessary
make scripts_gdb step")

Signed-off-by: Dongliang Mu <dzm91@hust.edu.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
[jc: fixed whitespace error]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240612145048.57829-1-dzm91@hust.edu.cn
2024-06-17 16:39:20 -06:00
Tony Luck
f77afc2796 Documentation/x86: Switch to new Intel CPU model defines
New CPU #defines encode vendor and family as well as model
so "_FAM6" is no longer used in the #define names.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240611204814.353821-1-tony.luck@intel.com
2024-06-17 16:28:08 -06:00
Thomas Huth
69bce7f3dc Documentation: Remove unused "nps_mtm_hs_ctr" from kernel-parameters.txt
The "nps_mtm_hs_ctr" parameter has been removed in commit dd7c7ab01a
("ARC: [plat-eznps]: Drop support for EZChip NPS platform"). Remove it
from the documentation now, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240614190804.602970-1-thuth@redhat.com
2024-06-17 16:25:29 -06:00
Thomas Huth
f730144162 Documentation: Remove unused "spia_*" kernel parameters
The kernel module parameters "spia_io_base", "spia_fio_base",
"spia_pedr" and "spia_peddr" have been removed via commit e377ca1e32
("ARM: clps711x: p720t: Special driver for handling NAND memory is removed").
Time to remove them from the documentation now, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240614184041.601056-1-thuth@redhat.com
2024-06-17 16:25:05 -06:00
Thomas Huth
f891e73f96 Documentation: Remove unused "mtdset=" from kernel-parameters.txt
The kernel parameter "mtdset" has been removed two years ago in
commit 61b7f8920b ("ARM: s3c: remove all s3c24xx support") and
thus should be removed from the documentation now, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240614182508.600113-1-thuth@redhat.com
2024-06-17 16:24:32 -06:00
Thomas Huth
35a9cbeefd Documentation: Remove the "rhash_entries=" from kernel-parameters.txt
"rhash_entries" belonged to the routing cache that has been removed in
commit 89aef8921b ("ipv4: Delete routing cache.").

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240614092134.563082-1-thuth@redhat.com
2024-06-17 16:24:04 -06:00
Thomas Huth
2626f066f8 Documentation: Remove "ltpc=" from the kernel-parameters.txt
The string "ltpc" cannot be found in the source code anymore. This
kernel parameter likely belonged to the LocalTalk PC card module
which has been removed in commit 03dcb90dbf ("net: appletalk:
remove Apple/Farallon LocalTalk PC support"), so we should remove
it from kernel-parameters.txt now, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240614084633.560069-1-thuth@redhat.com
2024-06-17 16:15:00 -06:00
Thomas Huth
6bb955d4fb Documentation: Add "S390" to the swiotlb kernel parameter
The "swiotlb" kernel parameter is used on s390 for protected virt since
commit 64e1f0c531 ("s390/mm: force swiotlb for protected virtualization")
and thus should be marked in kernel-parameters.txt accordingly.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240614081438.553160-1-thuth@redhat.com
2024-06-17 16:12:10 -06:00
Ahmad Fatoum
e8496ad6d8 docs: crypto: async-tx-api: fix broken code example
The code example fails to compile:

  1) addr_conv is defined twice, once as a VLA, which have been phased out

  2) submit is not a pointer, but is still dereferenced with ->

  3) The first call to async_xor() lacked the trailing semicolon

Fix these issues and while at it, fix some code style nitpicks as well:

  1) make the functions static as users are unlikely to export them

  2) include the relevant header

  3) Shorten the example a bit by removing a redundant variable
     definition

Fixes: 04ce9ab385 ("async_xor: permit callers to pass in a 'dma/page scribble' region")
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Reviewed-by: Andre Noll <maan@tuebingen.mpg.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240529-async-dma-docs-v2-1-8faf87e72e6d@pengutronix.de
2024-06-12 15:41:09 -06:00
Jinjie Ruan
99a021edde Documentation: kernel-parameters: Add RISCV for nohlt
Since commit bcf11b5e99 ("riscv: Enable idle generic idle loop") enable
idle generic idle loop for RISCV, but the document is not updated
synchronously, so update RISCV support for nohlt.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Fixes: bcf11b5e99 ("riscv: Enable idle generic idle loop")
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240604114005.875609-1-ruanjinjie@huawei.com
2024-06-12 15:32:06 -06:00
Dongliang Mu
50c0fa7f98 scripts: add scripts/checktransupdate.py
The checktransupdate.py script helps track the translation status of
the documentation in different locales, e.g., zh_CN and verify if
these documenation is up-to-date. More specially, it uses `git log`
commit to find the latest english commit from the translation commit
(order by author date) and the latest english commits from HEAD. If
differences occur, report the file and commits that need to be updated.

Signed-off-by: Dongliang Mu <dzm91@hust.edu.cn>
Signed-off-by: Cheng Ziqiu <chengziqiu@hust.edu.cn>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240611131723.53515-1-dzm91@hust.edu.cn
2024-06-12 15:24:11 -06:00
Dongliang Mu
74de938eb5 docs/zh_CN: Update the translation of dev-tools/testing-overview
Update to commit 42fb9cfd5b ("Documentation: dev-tools:
Add link to RV docs")

Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Dongliang Mu <dzm91@hust.edu.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240612091155.38866-1-dzm91@hust.edu.cn
2024-06-12 15:13:52 -06:00
Dongliang Mu
b3d6c48029 docs/zh_CN: Update dev-tools/index.rst
Add several newish dev-tools documents to the todo list.

Signed-off-by: Dongliang Mu <dzm91@hust.edu.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240612161835.18931-1-dzm91@hust.edu.cn
2024-06-12 15:12:03 -06:00
Dmitry Baryshkov
627395716c docs: document python version used for compilation
The drm/msm driver had adopted using Python3 script to generate register
header files instead of shipping pre-generated header files. Document
the minimal Python version supported by the script.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240509-python-version-v1-1-a7dda3a95b5f@linaro.org
2024-05-30 13:59:10 -06:00
Karel Balej
b80103a2df docs: handling-regressions.rst: recommend using "Closes:" tags
Update the handling-regressions guide to recommend using "Closes:" tags
rather than "Link:" when referencing fixed reports. The latter was used
originally but now is only recommended when the given patch only fixes
part of the issue, as described in submitting-patches. Briefly mention
that and also note that regzbot currently doesn't make a distinction.

Also fix a typo.

Acked-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Karel Balej <balejk@matfyz.cz>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240513084145.2460-1-balejk@matfyz.cz
2024-05-30 13:56:06 -06:00
Federico Vaga
1a0e2cd9c4 doc:it_IT: align Italian documentation
This commit translats in Italian the following changes:

commit 5db34f5bfd ("docs: stable-kernel-rules: remove code-labels tags and a indention level")
commit 2263c40e65 ("docs: stable-kernel-rules: call mainline by its name and change example")
commit db483303b5 ("docs: stable-kernel-rules: reduce redundancy")
commit af3e4a5ab9 ("docs: stable-kernel-rules: create special tag to flag 'no backporting'"")
commit 91a3d6be99 ("doc-guide: kernel-doc: tell about object-like macros")
commit b104dbedbe ("Documentation: RISC-V: patch-acceptance: mention patchwork's role")
commit ed843ae947 ("docs: move riscv under arch")
commit b45d8f3871 ("docs: remove the tips on how to submit patches from MAINTAINERS")
commit 0d828200ad ("docs: process: allow Closes tags with links")
commit c23f28975a ("Merge tag 'docs-6.4' of git://git.lwn.net/linux")
commit 329ac9af90 ("docs: submitting-patches: Discuss interleaved replies")
commit 02f9998754 ("docs: submitting-patches: Suggest a longer expected time for responses")
commit 1fae02e7eb ("docs: submitting-patches: encourage direct notifications to commenters")
commit d254d263f6 ("docs: submitting-patches: improve the base commit explanation")
commit 0d828200ad ("docs: process: allow Closes tags with links")
commit 9c1b86f8ce ("kbuild: raise the minimum supported version of LLVM to 13.0.1")
commit 768409cff6 ("rust: upgrade to Rust 1.76.0")
commit 23bfb947eb ("doc: fix spelling about ReStructured Text")
commit d0bde9ca0e ("docs: stable-kernel-rules: mention other usages for stable tag comments")
commit 33568553b3 ("docs: stable-kernel-rules: make rule section more straight forward")
commit 3feb21bb0b ("docs: stable-kernel-rules: move text around to improve flow")
commit 0f11447d9f ("docs: stable-kernel-rules: improve structure by changing headlines")
commit 189057a1b6 ("docs: stable-kernel-rules: make the examples for option 1 a proper list")
commit 6e160d29f6 ("docs: stable-kernel-rules: fine-tune various details")
commit bbaee49cce ("docs: stable-kernel-rules: mention that regressions must be prevented")
commit 4f01342464 ("Documentation: stable: clarify patch series prerequisites")

Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240513210510.10929-1-federico.vaga@vaga.pv.it
2024-05-30 13:40:25 -06:00
Conor Dooley
9c03bc90c0 Documentation: process: Revert "Document suitability of Proton Mail for kernel development"
Revert commit 1d2ed9234c ("Documentation: process: Document
suitability of Proton Mail for kernel development") as Proton disabled
WKD for kernel.org addresses as a result of some interaction with
Konstantin on social.kernel.org

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Kanak Shilledar <kanakshilledar111@protonmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240516-groin-slingshot-c3c3734d2f10@spud
2024-05-30 13:37:22 -06:00
Randy Dunlap
23a0bc2851 doc-guide: kernel-doc: document Returns: spelling
scripts/kernel-doc accepts "Return:" or "Returns:" for describing the
return value of a function or function-like macro, so document this
alternative spelling and use it in an example.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240522224726.10498-1-rdunlap@infradead.org
2024-05-30 13:35:07 -06:00
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