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62d5e970d0
1216057 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Tom Lendacky
|
62d5e970d0 |
x86/sev: Change npages to unsigned long in snp_accept_memory()
In snp_accept_memory(), the npages variables value is calculated from
phys_addr_t variables but is an unsigned int. A very large range passed
into snp_accept_memory() could lead to truncating npages to zero. This
doesn't happen at the moment but let's be prepared.
Fixes:
|
||
|
Tom Lendacky
|
6bc6f7d9d7 |
x86/sev: Use the GHCB protocol when available for SNP CPUID requests
SNP retrieves the majority of CPUID information from the SNP CPUID page.
But there are times when that information needs to be supplemented by the
hypervisor, for example, obtaining the initial APIC ID of the vCPU from
leaf 1.
The current implementation uses the MSR protocol to retrieve the data from
the hypervisor, even when a GHCB exists. The problem arises when an NMI
arrives on return from the VMGEXIT. The NMI will be immediately serviced
and may generate a #VC requiring communication with the hypervisor.
Since a GHCB exists in this case, it will be used. As part of using the
GHCB, the #VC handler will write the GHCB physical address into the GHCB
MSR and the #VC will be handled.
When the NMI completes, processing resumes at the site of the VMGEXIT
which is expecting to read the GHCB MSR and find a CPUID MSR protocol
response. Since the NMI handling overwrote the GHCB MSR response, the
guest will see an invalid reply from the hypervisor and self-terminate.
Fix this problem by using the GHCB when it is available. Any NMI
received is properly handled because the GHCB contents are copied into
a backup page and restored on NMI exit, thus preserving the active GHCB
request or result.
[ bp: Touchups. ]
Fixes:
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||
Linus Torvalds
|
8a749fd1a8 | Linux 6.6-rc4 | ||
|
Linus Torvalds
|
e81a2dabc3 |
Kbuild fixes for v6.6 (2nd)
- Fix the module compression with xz so the in-kernel decompressor works
- Document a kconfig idiom to express an optional dependency between
modules
- Make modpost, when W=1 is given, detect broken drivers that reference
.exit.* sections
- Remove unused code
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Merge tag 'kbuild-fixes-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Fix the module compression with xz so the in-kernel decompressor
works
- Document a kconfig idiom to express an optional dependency between
modules
- Make modpost, when W=1 is given, detect broken drivers that reference
.exit.* sections
- Remove unused code
* tag 'kbuild-fixes-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: remove stale code for 'source' symlink in packaging scripts
modpost: Don't let "driver"s reference .exit.*
vmlinux.lds.h: remove unused CPU_KEEP and CPU_DISCARD macros
modpost: add missing else to the "of" check
Documentation: kbuild: explain handling optional dependencies
kbuild: Use CRC32 and a 1MiB dictionary for XZ compressed modules
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Linus Torvalds
|
d2c5231581 |
Fourteen hotfixes, eleven of which are cc:stable. The remainder pertain
to issues which were introduced after 6.5. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZRmSDAAKCRDdBJ7gKXxA jlSaAQCe3SnBdjRmuzbp5iIfNJOY7GXLN4NwMsArRUxRGY27IwD+KWhXZP/ydVnt ZgS4x9rmarHuh5Pxds+6SRGhihRz/Ak= =sf/5 -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2023-10-01-08-34' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "Fourteen hotfixes, eleven of which are cc:stable. The remainder pertain to issues which were introduced after 6.5" * tag 'mm-hotfixes-stable-2023-10-01-08-34' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: Crash: add lock to serialize crash hotplug handling selftests/mm: fix awk usage in charge_reserved_hugetlb.sh and hugetlb_reparenting_test.sh that may cause error mm: mempolicy: keep VMA walk if both MPOL_MF_STRICT and MPOL_MF_MOVE are specified mm/damon/vaddr-test: fix memory leak in damon_do_test_apply_three_regions() mm, memcg: reconsider kmem.limit_in_bytes deprecation mm: zswap: fix potential memory corruption on duplicate store arm64: hugetlb: fix set_huge_pte_at() to work with all swap entries mm: hugetlb: add huge page size param to set_huge_pte_at() maple_tree: add MAS_UNDERFLOW and MAS_OVERFLOW states maple_tree: add mas_is_active() to detect in-tree walks nilfs2: fix potential use after free in nilfs_gccache_submit_read_data() mm: abstract moving to the next PFN mm: report success more often from filemap_map_folio_range() fs: binfmt_elf_efpic: fix personality for ELF-FDPIC |
||
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Linus Torvalds
|
8f63336941 |
Misc driver fix for 6.6-rc4
Here is a single, much requested, fix for a set of misc drivers to resolve a much reported regression in the -rc series that has also propagated back to the stable releases. Sorry for the delay, lots of conference travel for a few weeks put me very far behind in patch wrangling. It has been reported by many to resolve the reported problem, and has been in linux-next with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZRlkBA8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ymXywCgpZTozZr59dQeF48Z+iy2xBbimIUAoIqXUf/Q 5/iAwx8K5CHWBjXfwmaS =AG4X -----END PGP SIGNATURE----- Merge tag 'char-misc-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull misc driver fix from Greg KH: "Here is a single, much requested, fix for a set of misc drivers to resolve a much reported regression in the -rc series that has also propagated back to the stable releases. Sorry for the delay, lots of conference travel for a few weeks put me very far behind in patch wrangling. It has been reported by many to resolve the reported problem, and has been in linux-next with no reported issues" * tag 'char-misc-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: misc: rtsx: Fix some platforms can not boot and move the l1ss judgment to probe |
||
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Linus Torvalds
|
3abd15e25f |
TTY / Serial driver fixes for 6.6-rc4
Here are 2 tty/serial driver fixes for 6.6-rc4 that resolve some reported regressions: - revert a n_gsm change that ended up causing problems - 8250_port fix for irq data both have been in linux-next for over a week with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZRllBw8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ylHwgCeJLftFU1rY4eHkpk/0uIyb89JZGMAoMtzY+iT vsq0fu2cCQLQph3RYHD9 =t1ba -----END PGP SIGNATURE----- Merge tag 'tty-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty / serial driver fixes from Greg KH: "Here are two tty/serial driver fixes for 6.6-rc4 that resolve some reported regressions: - revert a n_gsm change that ended up causing problems - 8250_port fix for irq data both have been in linux-next for over a week with no reported problems" * tag 'tty-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: Revert "tty: n_gsm: fix UAF in gsm_cleanup_mux" serial: 8250_port: Check IRQ data before use |
||
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Linus Torvalds
|
ec8c298121 |
Misc fixes: a kerneldoc build warning fix, add SRSO mitigation for
AMD-derived Hygon processors, and fix a SGX kernel crash in the page fault handler that can trigger when ksgxd races to reclaim the SECS special page, by making the SECS page unswappable. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmUZNa4RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hFYA//aCXuIxVgMdgwDs7uuaghAX7v3NWlx1Pu qxioHgpGimOl5Sm28siT29GCnFK3a+DBd7wCNQ9yhRxTIESwAG9wGlD8cfZISvyI qinPU6Yo0OLEAI//g2IWzr/Hw8QecrjLGGoqhFj8m2vsLANWcTXkeRoFxNwWlobx OSGQL+SYP5tuAhsrjbsQMHiOAUxXAdAuT62R8nYgCcj6A/VTvjSUF9N3C6G/CtnM Y7pi8n4VPxDuU8dwhi1HptHzBrAl6GYXiC1A9UgddKaDk710R+Fe4+LkJR4NVrnL zXv5YY4qoHzVcQ3gznBUOTwDPDWjsGPaTU2Gcya3FRXxZlc1i7p+/kBvxAxQz05H Z6ixkfnWOhdYPWbr7yau7r0RRR4ZvK22pIoAfxKdTYbbI5lOUqbSof0d9mHAY+An tHkYqqFAabnPs4ogGT4tK7nHr9pnCFEEfd2JAAPDu78XkVlokvV7e4sm7bjS4D4D tIHpp3gd04PaEq9I2mEvP57/Sn2fYr0PO3mg6jUppv35k2+hjjkfPilKzqPbcXP6 bD4gdjYXQV367kCfpN2SXUaPtn0UZfqdEol1UVzteVyNOgXHiPzCd/2K7YtW2MM5 wlJ35BDvC7uQr8XxOJBQoAETJQ7TtePnhIjDHOp+WYzn8dmd+r31/EJMIOC0TD/C nlvkY3/gvYA= =YK/4 -----END PGP SIGNATURE----- Merge tag 'x86-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "Misc fixes: a kerneldoc build warning fix, add SRSO mitigation for AMD-derived Hygon processors, and fix a SGX kernel crash in the page fault handler that can trigger when ksgxd races to reclaim the SECS special page, by making the SECS page unswappable" * tag 'x86-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sgx: Resolves SECS reclaim vs. page fault for EAUG race x86/srso: Add SRSO mitigation for Hygon processors x86/kgdb: Fix a kerneldoc warning when build with W=1 |
||
|
Linus Torvalds
|
373ceff28e |
Fix a spurious kernel warning during CPU hotplug events that
may trigger when timer/hrtimer softirqs are pending, which are otherwise hotplug-safe and don't merit a warning. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmUZMnoRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1ik9Q/+NR+Uq+hJUYMg00FF6f78SBwEXQ0vnfhs fGxnJMCRAfX4zEnCl4gNkIHy9k0n5/NY30YTkHlrLWktS4glSAUHCMDCr5FhyNGF IHwShR6bw2D2JJP6hOuM5MXOw5XewJRv95QC4mzzS2+loy7Vtte9WtJc9E07el/n 6bH5HyJKY/oR/r1kQTMpNoPzbNSGe8wDGZesjBeKBfgp7ZZ5ZTf/cwnJxL+C4nG0 VTZ2pawgT8+pWuEp3WpWE35dYcYWkpxw0wOXMxV1rymmA7+X1NJ+aH7DHp4e3o00 dHih13GrZek4FKzSeH0nGGW/jrO6ap942yNhlsLzJXI8UiaAt+T3j83020d7zlAx 1j2KSwWggBbolL+vzDtOaDJ7rx/xLWeN9ofAlnBmOmYwaWeR31ZtDqPq2ObN5eJ1 T/ALFQ9SNCn5khfYLKJQzZJSGCJ+1N6Wvl5huVil16WG88BzVc5WkxdC1LhJ5cEZ EwnaDwk0R9iQjok+7zxsIrD/CBe3ugsfOQb18i2xoP2MC1ivOo5HYAvVeT7Oy6nw f1zWd3VuLg+/iieoNnHSIZGsnmpJlpF3piNGCt65P0W0qZlSekOlK68ExB/npriO lCpKI50ATmup+FVa2riJZ3EhODEdlx8umb7gOaxjQSrMgkAIItrK02BQ6I5iAWKh JC+yQa8SN/g= =Ms07 -----END PGP SIGNATURE----- Merge tag 'timers-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fix from Ingo Molnar: "Fix a spurious kernel warning during CPU hotplug events that may trigger when timer/hrtimer softirqs are pending, which are otherwise hotplug-safe and don't merit a warning" * tag 'timers-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timers: Tag (hr)timer softirq as hotplug safe |
||
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Linus Torvalds
|
c5ecffe6d3 |
Fix a RT tasks related lockup/live-lock during CPU offlining.
Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmUZMIoRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1iCuw/+Mc2ScQK+Y2gQWzOsACMIm863CqnwYxAK rzvny0wEiESHDcRGFC46Bv6Ru6BZr8tPrBbsWHWUJTx9dO4RVSUlT/DwoaehQEXb hqFTmio3YA+yUVbz3oh3BiELkUBQ/Q3M33Z5DiMrB7fH9/e4Disuw3aZu1zZ/CqX AGHvoL4TILNOQhDMAmHjDXDgp3HZUqCZIhteNbHVa5HJ7Bpal8xh3j73EZ8cYEoj GWKlFvwSxQQmmCexBTmLxZN7O0guLv27qL3LtlhfCtCJH8Hb6yC14QsPs8zJShqN TZ5su+meeJKkyE4y5fyhNxCKSmB/8x0fFf8+juQFNo+V73XcfMg/Ymz4mVNuhlxj bGKTOqkZEGLwAWpopJFvJK+hnLU8PvqOrTkJJ14JisiXBEV5YRccUARVz9r+jv8V iGu4xI1SQjuK+Jq7/yQscii4VpQdZ6cYrCBQJY84cYFc+jSevqu0QKs5fl4LV8Q5 s9TRnlMk+Eo/oIbRTNJCc2a4IVofRnIiAy5AbKy8UvSlul7UXkMKnXZCJKo5Pl16 jyQ59R4wXnGCi2SDwLUdJnghOgsL29MFSdMqcvNS1VI+bIR9l9mWVStjtyIY/dKE JWNGNQPvDCxevjp28rEtIzPx1AKQszsAVUKzAANZb+kHtcC+YP1zQHVWJ0ZknG7N B41vXGbRlmM= =ByhJ -----END PGP SIGNATURE----- Merge tag 'sched-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Ingo Molnar: "Fix a RT tasks related lockup/live-lock during CPU offlining" * tag 'sched-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/rt: Fix live lock between select_fallback_rq() and RT push |
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Linus Torvalds
|
3a38c57a87 |
Misc fixes: work around an AMD microcode bug on certain models,
and fix kexec kernel PMI handlers on AMD systems that get loaded on older kernels that have an unexpected register state. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmUZLo8RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1gzXw/8C6YUlO05xpocZuBzbQU/BtpAj1P8VwTe gSPD3vaPeXvEFSDqoNBEXXs54VRpAnHfLOGmr5DrjG9h8yr7MU5/hUfov6a8dLtH rAjwYOtZapHz/nc/+knbGUcM4d7H8IRYF62A4Vy2uugLlfNQY6YAuEeg/5/ykS5Y mCUAWgwwygPdN5VOQZNlJluEw6DexyUmM3fg9Gbq+Hx1bycPJtUzub5q3fGQ/FcG wxUUgL1lKIUoOHXL2D3Xq0fE7A8khXJIjzxqBysSrnMqe7BDS3ur1SoLjDPGaXcP f2wBpEGdSU9xxfEL3W8gdtmsffihU8ExbNZYFdpTlOf02aB7z03M0Lr4NwsJDiCZ Qek6IpK0ZHyC67X7UC7iTzAnI/c32jhkoTzHXpI1aOX/dX8TLNy0r/FKxoUcbv16 HDPy4RnuhNQS3X8P1EqcXJ72AEF0Ce5S9tU8MfSKDWSElfXtCtE+hvIilqoUaW9F RTtHl6cOezCEkx3SryhhZibMaOVrLGFMeF01lpHXckwHQt8q2TMMEaCRNYjpGfwM zsBS1+E1/XeVsVqadM3/vbu7SyUUimlPZy8gc2gkSqyq8NZcs+OqbYaYF00v4lcN TtxRv9I3J8oXaZWTA7XUC+00IwMuYVjdv4ZJL/rRWpQaatoAFRLf0rS5/LgY9kSc xIYuX63A4Wo= =rzXG -----END PGP SIGNATURE----- Merge tag 'perf-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf event fixes from Ingo Molnar: "Misc fixes: work around an AMD microcode bug on certain models, and fix kexec kernel PMI handlers on AMD systems that get loaded on older kernels that have an unexpected register state" * tag 'perf-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/amd: Do not WARN() on every IRQ perf/x86/amd/core: Fix overflow reset on hotplug |
||
Masahiro Yamada
|
2d7d1bc119 |
kbuild: remove stale code for 'source' symlink in packaging scripts
Since commit
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Uwe Kleine-König
|
f177cd0c15 |
modpost: Don't let "driver"s reference .exit.*
Drivers must not reference functions marked with __exit as these likely
are not available when the code is built-in.
There are few creative offenders uncovered for example in ARCH=amd64
allmodconfig builds. So only trigger the section mismatch warning for
W=1 builds.
The dual rule that drivers must not reference .init.* is implemented
since commit
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||
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Masahiro Yamada
|
15e86643d5 |
vmlinux.lds.h: remove unused CPU_KEEP and CPU_DISCARD macros
Remove the left-over of commit
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Mauricio Faria de Oliveira
|
cbc3d00cf8 |
modpost: add missing else to the "of" check
Without this 'else' statement, an "usb" name goes into two handlers:
the first/previous 'if' statement _AND_ the for-loop over 'devtable',
but the latter is useless as it has no 'usb' device_id entry anyway.
Tested with allmodconfig before/after patch; no changes to *.mod.c:
git checkout v6.6-rc3
make -j$(nproc) allmodconfig
make -j$(nproc) olddefconfig
make -j$(nproc)
find . -name '*.mod.c' | cpio -pd /tmp/before
# apply patch
make -j$(nproc)
find . -name '*.mod.c' | cpio -pd /tmp/after
diff -r /tmp/before/ /tmp/after/
# no difference
Fixes:
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||
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Linus Torvalds
|
e402b08634 |
ARM: SoC fixes for 6.6
These are teh latest bug fixes that have come up in the soc tree.
Most of these are fairly minor. Most notably, the majority of
changes this time are not for dts files as usual.
- Updates to the addresses of the broadcom and aspeed entries in the
MAINTAINERS file.
- Defconfig updates to address a regression on samsung and a build
warning from an unknown Kconfig symbol
- Build fixes for the StrongARM and Uniphier platforms
- Code fixes for SCMI and FF-A firmware drivers, both of which had
a simple bug that resulted in invalid data, and a lesser fix for
the optee firmware driver
- Multiple fixes for the recently added loongson/loongarch "guts"
soc driver
- Devicetree fixes for RISC-V on the startfive platform, addressing
issues with NOR flash, usb and uart.
- Multiple fixes for NXP i.MX8/i.MX9 dts files, fixing problems
with clock, gpio, hdmi settings and the Makefile
- Bug fixes for i.MX firmware code and the OCOTP soc driver
- Multiple fixes for the TI sysc bus driver
- Minor dts updates for TI omap dts files, to address boot
time warnings and errors
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Merge tag 'soc-fixes-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"These are the latest bug fixes that have come up in the soc tree. Most
of these are fairly minor. Most notably, the majority of changes this
time are not for dts files as usual.
- Updates to the addresses of the broadcom and aspeed entries in the
MAINTAINERS file.
- Defconfig updates to address a regression on samsung and a build
warning from an unknown Kconfig symbol
- Build fixes for the StrongARM and Uniphier platforms
- Code fixes for SCMI and FF-A firmware drivers, both of which had a
simple bug that resulted in invalid data, and a lesser fix for the
optee firmware driver
- Multiple fixes for the recently added loongson/loongarch "guts" soc
driver
- Devicetree fixes for RISC-V on the startfive platform, addressing
issues with NOR flash, usb and uart.
- Multiple fixes for NXP i.MX8/i.MX9 dts files, fixing problems with
clock, gpio, hdmi settings and the Makefile
- Bug fixes for i.MX firmware code and the OCOTP soc driver
- Multiple fixes for the TI sysc bus driver
- Minor dts updates for TI omap dts files, to address boot time
warnings and errors"
* tag 'soc-fixes-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (35 commits)
MAINTAINERS: Fix Florian Fainelli's email address
arm64: defconfig: enable syscon-poweroff driver
ARM: locomo: fix locomolcd_power declaration
soc: loongson: loongson2_guts: Remove unneeded semicolon
soc: loongson: loongson2_guts: Convert to devm_platform_ioremap_resource()
soc: loongson: loongson_pm2: Populate children syscon nodes
dt-bindings: soc: loongson,ls2k-pmc: Allow syscon-reboot/syscon-poweroff as child
soc: loongson: loongson_pm2: Drop useless of_device_id compatible
dt-bindings: soc: loongson,ls2k-pmc: Use fallbacks for ls2k-pmc compatible
soc: loongson: loongson_pm2: Add dependency for INPUT
arm64: defconfig: remove CONFIG_COMMON_CLK_NPCM8XX=y
ARM: uniphier: fix cache kernel-doc warnings
MAINTAINERS: aspeed: Update Andrew's email address
MAINTAINERS: aspeed: Update git tree URL
firmware: arm_ffa: Don't set the memory region attributes for MEM_LEND
arm64: dts: imx: Add imx8mm-prt8mm.dtb to build
arm64: dts: imx8mm-evk: Fix hdmi@3d node
soc: imx8m: Enable OCOTP clock for imx8mm before reading registers
arm64: dts: imx8mp-beacon-kit: Fix audio_pll2 clock
arm64: dts: imx8mp: Fix SDMA2/3 clocks
...
|
||
|
Linus Torvalds
|
3b347e4032 |
Tracing fixes for v6.6-rc3:
- Make sure 32 bit applications using user events have aligned access when running on a 64 bit kernel. - Add cond_resched in the loop that handles converting enums in print_fmt string is trace events. - Fix premature wake ups of polling processes in the tracing ring buffer. When a task polls waiting for a percentage of the ring buffer to be filled, the writer still will wake it up at every event. Add the polling's percentage to the "shortest_full" list to tell the writer when to wake it up. - For eventfs dir lookups on dynamic events, an event system's only event could be removed, leaving its dentry with no children. This is totally legitimate. But in eventfs_release() it must not access the children array, as it is only allocated when the dentry has children. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZRiI2xQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qlvoAQDKbevbqA0C8lEV1rbVh4Q9Rnq580rz EAyEO/RrSOwE9AEA2z+Q597mDjEiqQBvqTjBkS+0xZ7AUQYZRWgTHRIbegg= =tqOM -----END PGP SIGNATURE----- Merge tag 'trace-v6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing fixes from Steven Rostedt: - Make sure 32-bit applications using user events have aligned access when running on a 64-bit kernel. - Add cond_resched in the loop that handles converting enums in print_fmt string is trace events. - Fix premature wake ups of polling processes in the tracing ring buffer. When a task polls waiting for a percentage of the ring buffer to be filled, the writer still will wake it up at every event. Add the polling's percentage to the "shortest_full" list to tell the writer when to wake it up. - For eventfs dir lookups on dynamic events, an event system's only event could be removed, leaving its dentry with no children. This is totally legitimate. But in eventfs_release() it must not access the children array, as it is only allocated when the dentry has children. * tag 'trace-v6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: eventfs: Test for dentries array allocated in eventfs_release() tracing/user_events: Align set_bit() address for all archs tracing: relax trace_event_eval_update() execution with cond_resched() ring-buffer: Update "shortest_full" in polling |
||
Steven Rostedt (Google)
|
2598bd3ca8 |
eventfs: Test for dentries array allocated in eventfs_release()
The dcache_dir_open_wrapper() could be called when a dynamic event is
being deleted leaving a dentry with no children. In this case the
dlist->dentries array will never be allocated. This needs to be checked
for in eventfs_release(), otherwise it will trigger a NULL pointer
dereference.
Link: https://lore.kernel.org/linux-trace-kernel/20230930090106.1c3164e9@rorschach.local.home
Cc: Mark Rutland <mark.rutland@arm.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Fixes:
|
||
Beau Belgrave
|
2de9ee9405 |
tracing/user_events: Align set_bit() address for all archs
All architectures should use a long aligned address passed to set_bit().
User processes can pass either a 32-bit or 64-bit sized value to be
updated when tracing is enabled when on a 64-bit kernel. Both cases are
ensured to be naturally aligned, however, that is not enough. The
address must be long aligned without affecting checks on the value
within the user process which require different adjustments for the bit
for little and big endian CPUs.
Add a compat flag to user_event_enabler that indicates when a 32-bit
value is being used on a 64-bit kernel. Long align addresses and correct
the bit to be used by set_bit() to account for this alignment. Ensure
compat flags are copied during forks and used during deletion clears.
Link: https://lore.kernel.org/linux-trace-kernel/20230925230829.341-2-beaub@linux.microsoft.com
Link: https://lore.kernel.org/linux-trace-kernel/20230914131102.179100-1-cleger@rivosinc.com/
Cc: stable@vger.kernel.org
Fixes:
|
||
Clément Léger
|
23cce5f254 |
tracing: relax trace_event_eval_update() execution with cond_resched()
When kernel is compiled without preemption, the eval_map_work_func() (which calls trace_event_eval_update()) will not be preempted up to its complete execution. This can actually cause a problem since if another CPU call stop_machine(), the call will have to wait for the eval_map_work_func() function to finish executing in the workqueue before being able to be scheduled. This problem was observe on a SMP system at boot time, when the CPU calling the initcalls executed clocksource_done_booting() which in the end calls stop_machine(). We observed a 1 second delay because one CPU was executing eval_map_work_func() and was not preempted by the stop_machine() task. Adding a call to cond_resched() in trace_event_eval_update() allows other tasks to be executed and thus continue working asynchronously like before without blocking any pending task at boot time. Link: https://lore.kernel.org/linux-trace-kernel/20230929191637.416931-1-cleger@rivosinc.com Cc: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Clément Léger <cleger@rivosinc.com> Tested-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Steven Rostedt (Google)
|
1e0cb399c7 |
ring-buffer: Update "shortest_full" in polling
It was discovered that the ring buffer polling was incorrectly stating that read would not block, but that's because polling did not take into account that reads will block if the "buffer-percent" was set. Instead, the ring buffer polling would say reads would not block if there was any data in the ring buffer. This was incorrect behavior from a user space point of view. This was fixed by commit |
||
|
Linus Torvalds
|
3b517966c5 |
dma-mapping fixes for Linux 6.6
- fix the narea calculation in swiotlb initialization (Ross Lagerwall) - fix the check whether a device has used swiotlb (Petr Tesarik) -----BEGIN PGP SIGNATURE----- iQI/BAABCgApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAmUYWTULHGhjaEBsc3Qu ZGUACgkQD55TZVIEUYMilA/8DomLRCrDy792MoRvBCThWaY6auW4bCUoY7S6VZe7 LVECKAJRwFH7b+dk1mNjPhWTyq8/wB7kr/OLuU9HDcVIeiP9zxks4BMQ4RGc/ZuK rSZ5ZHPVVCC4EOI3ncjQXrODwgGkGUvtdriByCtX2r4NLBjO1T0vUQB4bLyBTZf+ GnTCLxCkSrIxaqniRvM0K34yO/0rq0ci5840MNneR7MKQkVqPUDY83sHwL1KcQPf s16lwclQdjZdOVpFMPxFin5NpvPIrjdrvhoaxdnz+8ZuwSACqRUZDQuNlZ3+Zep6 iaynNR04o0c2p0PTT5l3ZRD5vsyCjvc+/3kB3KlM33XbBArWi6XV+694QQn59JnZ 5MmHoIulwZGLsIlTG188QreZBlLrmxylUX311Kot5ood/HW8DsYbTo/krbiiUgEk MXKWq9k6cQOdhgriS4zxvUl+xkjby12jvSFxv9tN3HHvFsFB8+veVrTuLZzEDXpX a5PrmI/dcQmlVpCZllzVzeTgL2KeE1Jo0uRZ1vXhuoX8IBys4/TstIXOB4jnyVb4 kzrHbLIoVqLSN42eVMRKBrqGXGlZSWETBpkdSQ41St6t/3MurhKAWZ/1SFPXlI06 SnatIdOU7nSZRofK8/Xe1CnWia5NUpyUQpb+tLUHTgo4kZzGV330bf34iJ+BvC1h aks= =bhgc -----END PGP SIGNATURE----- Merge tag 'dma-mapping-6.6-2023-09-30' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping fixes from Christoph Hellwig: - fix the narea calculation in swiotlb initialization (Ross Lagerwall) - fix the check whether a device has used swiotlb (Petr Tesarik) * tag 'dma-mapping-6.6-2023-09-30' of git://git.infradead.org/users/hch/dma-mapping: swiotlb: fix the check whether a device has used software IO TLB swiotlb: use the calculated number of areas |
||
|
Linus Torvalds
|
25d48d570e |
Bug fixes for 6.6-rc4:
* Handle a race between writing and shrinking block devices by
returning EIO.
* Fix a typo in a comment.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Merge tag 'iomap-6.6-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap fixes from Darrick Wong:
- Handle a race between writing and shrinking block devices by
returning EIO
- Fix a typo in a comment
* tag 'iomap-6.6-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: Spelling s/preceeding/preceding/g
iomap: add a workaround for racy i_size updates on block devices
|
||
|
Linus Torvalds
|
cefc06e4de |
Usual buisness: a driver fix, a DT fix, a minor core fix
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmUX8OkACgkQFA3kzBSg KbYasA/+KhTMt8iMduKHTjjHgB8hv3AYw5QY9gYxIFMMjM6UpSHqM+LI9bwAQTfq dpTykOXNHlROVs9iZeU8g7oYDX6H3ku5yYBJPptYDdcG7U3WLFt7ndUUOReQVU8L aPQ8yyFMuyDF1s5ItIE3DF0rSVX6OngIOOLcSGPALEcbUSuyfbjf0yw1bL2pW7dF 2bX8RLKaeuvo1tt9g4AUzg+7gOQs9dxCE44Lpiqy1R2gJC/2WBxRdkYVdCYOR23s CZX7ds1TKUQJiFpyZsgTQt0Qc9K7253TpqxemQAjsfN982VPmIjVeX4OvjjJlgul AFISVN58WW4V28drw6kN9oCOwTal8Use8nBzVtVKqa7ebJ46UrUM6oJRHr3Z/xDP nBPnS48MGwyEym7QKy97ZV10u14OSj9J5sHn+125EHPo6TnW2SvQ/qfr51ejs619 4lorzyBBwSgFoGk+jaeG85E46GkedmJmBm6iDlz+ADQIamMIlRgolNltClZusB3x DMsCI9zpx96tkHL7cG8OVynD+392kKSsSkYhzQbBQjZ10dbNtmBY92jkq2Q3zd2m w99pWhjREn82e4MYyAVwAMiNpCwDM4kbYVXr608FWryrctp0RKNNSS3Hu7w9AcT4 6QcKhQulmSBvstfLXHqxu1Nuey25j91sNfVnTUulCgdmaBK7c00= =Fla+ -----END PGP SIGNATURE----- Merge tag 'i2c-for-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fixes from Wolfram Sang: "Usual business: a driver fix, a DT fix, a minor core fix" * tag 'i2c-for-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: npcm7xx: Fix callback completion ordering i2c: mux: Avoid potential false error message in i2c_mux_add_adapter dt-bindings: i2c: mxs: Pass ref and 'unevaluatedProperties: false' |
||
|
Linus Torvalds
|
830380e317 |
ACPI fix for 6.6-rc4
Fix a possible NULL pointer dereference in the error path of acpi_video_bus_add() resulting from recent changes (Dinghao Liu). -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAmUXBBwSHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRxFxQP/3WiDVfRlcDpKJd/221dSdtttBziH8SX 1r5n0eHgf5czl59DzzkCF57C+Quw9konBXj3hVYsP+YkgcgvgknctIlFMtw1inSr 91ybwDDb6qeL2S99GxXkltx61o2DO/Xkv8AQ2HVhNKUtfCY6ihcaoS+Yfnm5ZYCX dEQ4BgWjfmYyfWXQKRA8NoSO+c1r8CtXGFpq7bA/og+z+YWS9MjZZb/3b03EhyIG vMuGbJzoxoWAUhmAVYwezv0r8iGCcdyv1z+nAwYq/XZnPZJPv5IKNjLz7Ou0hP4K MyorDD/wCDCZCV6hTTqy+ezS6xGnmNE6+xexe9fUv72+F2NTBRpj2sEeaWsxhC8Z l8vxWTJB0gZbuvDQIu/iNXA+edun+h2Inyg+AS2nYnPZWQqZLVrzcXNfeT6Q+uoM G3P+qsiJJxfDgbieoOsA1AoY0ITZzFlZzm5DuoXSHn8VAdGbtYiidpq6wCqo8Mhl sbFF4W01iE6EUosv2mzfA7DxHbq9zG4ydMeY/xb3hC22hDOdYXrnmormpIFjWVda VRhpRKBQvcH3isPA8WcaZNQIvArpLkc7cPbYWepQF7nsxLZqiA8ksacX2itFTF7j Hb5fHvvY+XUquEOqsm+73OBipiYYq79qlUVEs7QnShoUENBI8VpV4mojelQ+okwS pzDGDXt28H+R =+sV7 -----END PGP SIGNATURE----- Merge tag 'acpi-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI fix from Rafael Wysocki: "Fix a possible NULL pointer dereference in the error path of acpi_video_bus_add() resulting from recent changes (Dinghao Liu)" * tag 'acpi-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: video: Fix NULL pointer dereference in acpi_video_bus_add() |
||
|
Linus Torvalds
|
1c9d831221 |
powerpc fixes for 6.6 #3
- Fix arch_stack_walk_reliable(), used by live patching. - Fix powerpc selftests to work with run_kselftest.sh Thanks to: Joe Lawrence, Petr Mladek. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmUYGLITHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgMJ3D/9UqgUm8f0vIGYu2jhvTYoR+b2Dqwls PFQKqiN78gWi/8njduY1j1U4EB8fJuFS972mDV04+mvUBM1Qj/jcCDKyO0lpYb9C ns+UUYFXF5QNBNrnSUSaItPRpXPceHEcIsVMolhRMBZHvKO1sl8D+kmpmnUML3Do qf/u508Xz3oB/+hPPPF/rOew9UHTroosD5/BPmaYzvjLx+8NTtJGuQI5spqyBI80 nerphmJoE7TjA08QgbtKd15xyYd+wciADJVPRzCnOJ2SNka8D+marmFG53c1LGLc j/5gbmogy7PtKYpCDOg8XAjqs1VMggZVGECC6VRAF2+IykdQP+6eV9rGluUafbQr 51bRClOe4dUIBqr0RIbNZGA80+hb9tqVEe5J2jyO4/f9XLd49prY2OSxAIgteCt8 Ak3W8TcSKcmzx45yPyg0Xac66HmvFzvCkj8oZTLT4m+11oPjWoxNSy3040anxJ8Y htYhl5T/tsEU8ZC96y4RfP1T20HQZW4PmXsJKLW/MADy5sN7YCzpMf9G2uj4id5J fizB7tRm2CmIfHsw6e8KGJ6NrD2uJcOwLR6Y7zb7QJ0PzwgYQWfjTCMXo2D1zEak RzyaKcY/ySkFZMb1sb867nc+VFCAG1UNJiNiZKNifZ0RElx+6U2KgZTUwYYs2aj2 jdudr2tl5BwhGQ== =gh/A -----END PGP SIGNATURE----- Merge tag 'powerpc-6.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Fix arch_stack_walk_reliable(), used by live patching - Fix powerpc selftests to work with run_kselftest.sh Thanks to Joe Lawrence and Petr Mladek. * tag 'powerpc-6.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: selftests/powerpc: Fix emit_tests to work with run_kselftest.sh powerpc/stacktrace: Fix arch_stack_walk_reliable() |
||
|
Linus Torvalds
|
ae21363998 |
nfsd-6.6 fixes:
- Fix NFSv4 READ corner case -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEKLLlsBKG3yQ88j7+M2qzM29mf5cFAmUYSnEACgkQM2qzM29m f5dtSxAAk/n3CzeIJFALIcP+JmHW6Zh2KbpygcqhxFoO1FAyRBJgOIEhtdD/c65Q fzfCQDZUzdTSirklBS5m0lIMhqaYMe1LUC8OIq/hh309vQ6WnlLltIU3fsaZFva5 kAaDeI/oGq2YnbjQENWCGHvKC7RR1jOTWASI/+52oYg/fwRkt14so/wDl54mxhNP q6Gt0Xw/mXkslAkQNQ+7a5eAa4TtepzkjkNWL4hSqboHQ4QFT2tmXqDV3E+V9tzX F/tlEN3EJo3nDNcUYAh6ec/YXo0tBh4DsnJxA9bRYloU40EUGP19ewXLEQgXPw9M IgSNluxTmDTQGz6kSUkQpepevWDUN0+fDt1kVqACIRXuvuMcGuDUCbD4VMa8HNnc bCMg8R/SkrBnzTamHJpPhbV/F/C0Iwp80RpqDMAnt4splrQUCJeB+Wl1qJAnYUW5 TdJxSJKCvypMIcNCd1ZMSVbeByUgZ/qXKKsS2YNS4l8+DGdnEJQ2mnFKw3Nk5bEF byWoyW6RMXCIwaqQa8hNsO5kW4MTxURxLXcgqzN7+5L2ht7pAYpNjnOc0vIBPe5t 9z+/dSk8a9QXBwRTxPL4QOgludXPqvokGBtCIV1LD5xQA9OZuXivnBz2DWmCt+IR GOYfjs3gSlvVrv7+EGffYlOh9f7GN/wlUfUxERKcB6HPweGOtqs= =aD10 -----END PGP SIGNATURE----- Merge tag 'nfsd-6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux Pull nfsd fix from Chuck Lever: - Fix NFSv4 READ corner case * tag 'nfsd-6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: NFSD: Fix zero NFSv4 READ results when RQ_SPLICE_OK is not set |
||
|
Linus Torvalds
|
ba77f7a63f |
smb3 client fix for password freeing potential oops
-----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmUXmlQACgkQiiy9cAdy T1Gh8Av8DprSP5ARIljIzuzPL60R/TF8WvWTuQZ93+KzGkM0eMXSvZ6VH0T3WXGs amfgwZFw1TOiQ6j3OqxX7ppd2PeooY65mX2tKVEQ27POQXB3VyUy2gBSPCTsDckD uOFX55GoPzkxxRgTWO7UHAbBzrZDJ8geH12Z0z9EXgJJjnJhkQi7dPkA+OusE3y0 wo4AjKOk+7HOFiuvG3p1XZKYHeB36PD+xATqRBxJAaUGkgV76stFEK/7lNWzxg/t NdiHQG5ILZP6L2RZrCVX88Et3HggGV5AF3GpDb8ZNfD7xQcu8lgVzHlw2E6CA5DS WFR6zrBiBsz9mPrS9cWY83C+aL8MHeumalBjLKQ5krL+IpC46H7a12yAWt5Yk6Q7 zdRQ9TtE8CMozqEJiaCFgL1Hz1CuTCvK974q+p5RG8OejRLzgmzFKYp8k7+L0qrc tZXQ16McYkBRcRIgaOk0i8GpJ44qNdhu/KTI5iKNqH0ScfHn56CIBiwSmZHiX75t zcCdF0bz =KBcN -----END PGP SIGNATURE----- Merge tag '6.6-rc3-smb3-client-fix' of git://git.samba.org/sfrench/cifs-2.6 Pull smb client fix from Steve French: "Fix for password freeing potential oops (also for stable)" * tag '6.6-rc3-smb3-client-fix' of git://git.samba.org/sfrench/cifs-2.6: fs/smb/client: Reset password pointer to NULL |
||
Baoquan He
|
e2a8f20dd8 |
Crash: add lock to serialize crash hotplug handling
Eric reported that handling corresponding crash hotplug event can be
failed easily when many memory hotplug event are notified in a short
period. They failed because failing to take __kexec_lock.
=======
[ 78.714569] Fallback order for Node 0: 0
[ 78.714575] Built 1 zonelists, mobility grouping on. Total pages: 1817886
[ 78.717133] Policy zone: Normal
[ 78.724423] crash hp: kexec_trylock() failed, elfcorehdr may be inaccurate
[ 78.727207] crash hp: kexec_trylock() failed, elfcorehdr may be inaccurate
[ 80.056643] PEFILE: Unsigned PE binary
=======
The memory hotplug events are notified very quickly and very many, while
the handling of crash hotplug is much slower relatively. So the atomic
variable __kexec_lock and kexec_trylock() can't guarantee the
serialization of crash hotplug handling.
Here, add a new mutex lock __crash_hotplug_lock to serialize crash hotplug
handling specifically. This doesn't impact the usage of __kexec_lock.
Link: https://lkml.kernel.org/r/20230926120905.392903-1-bhe@redhat.com
Fixes:
|
||
Juntong Deng
|
bbe246f875 |
selftests/mm: fix awk usage in charge_reserved_hugetlb.sh and hugetlb_reparenting_test.sh that may cause error
According to the awk manual, the -e option does not need to be specified in front of 'program' (unless you need to mix program-file). The redundant -e option can cause error when users use awk tools other than gawk (for example, mawk does not support the -e option). Error Example: awk: not an option: -e Link: https://lkml.kernel.org/r/VI1P193MB075228810591AF2FDD7D42C599C3A@VI1P193MB0752.EURP193.PROD.OUTLOOK.COM Signed-off-by: Juntong Deng <juntong.deng@outlook.com> Cc: Shuah Khan <shuah@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Yang Shi
|
24526268f4 |
mm: mempolicy: keep VMA walk if both MPOL_MF_STRICT and MPOL_MF_MOVE are specified
When calling mbind() with MPOL_MF_{MOVE|MOVEALL} | MPOL_MF_STRICT, kernel
should attempt to migrate all existing pages, and return -EIO if there is
misplaced or unmovable page. Then commit
|
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Jinjie Ruan
|
45120b1574 |
mm/damon/vaddr-test: fix memory leak in damon_do_test_apply_three_regions()
When CONFIG_DAMON_VADDR_KUNIT_TEST=y and making CONFIG_DEBUG_KMEMLEAK=y and CONFIG_DEBUG_KMEMLEAK_AUTO_SCAN=y, the below memory leak is detected. Since commit |
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Michal Hocko
|
4597648fdd |
mm, memcg: reconsider kmem.limit_in_bytes deprecation
This reverts commits |
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Domenico Cerasuolo
|
ca56489c2f |
mm: zswap: fix potential memory corruption on duplicate store
While stress-testing zswap a memory corruption was happening when writing
back pages. __frontswap_store used to check for duplicate entries before
attempting to store a page in zswap, this was because if the store fails
the old entry isn't removed from the tree. This change removes duplicate
entries in zswap_store before the actual attempt.
[cerasuolodomenico@gmail.com: add a warning and a comment, per Johannes]
Link: https://lkml.kernel.org/r/20230925130002.1929369-1-cerasuolodomenico@gmail.com
Link: https://lkml.kernel.org/r/20230922172211.1704917-1-cerasuolodomenico@gmail.com
Fixes:
|
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Ryan Roberts
|
6f1bace9a9 |
arm64: hugetlb: fix set_huge_pte_at() to work with all swap entries
When called with a swap entry that does not embed a PFN (e.g. PTE_MARKER_POISONED or PTE_MARKER_UFFD_WP), the previous implementation of set_huge_pte_at() would either cause a BUG() to fire (if CONFIG_DEBUG_VM is enabled) or cause a dereference of an invalid address and subsequent panic. arm64's huge pte implementation supports multiple huge page sizes, some of which are implemented in the page table with multiple contiguous entries. So set_huge_pte_at() needs to work out how big the logical pte is, so that it can also work out how many physical ptes (or pmds) need to be written. It previously did this by grabbing the folio out of the pte and querying its size. However, there are cases when the pte being set is actually a swap entry. But this also used to work fine, because for huge ptes, we only ever saw migration entries and hwpoison entries. And both of these types of swap entries have a PFN embedded, so the code would grab that and everything still worked out. But over time, more calls to set_huge_pte_at() have been added that set swap entry types that do not embed a PFN. And this causes the code to go bang. The triggering case is for the uffd poison test, commit |
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Ryan Roberts
|
935d4f0c6d |
mm: hugetlb: add huge page size param to set_huge_pte_at()
Patch series "Fix set_huge_pte_at() panic on arm64", v2. This series fixes a bug in arm64's implementation of set_huge_pte_at(), which can result in an unprivileged user causing a kernel panic. The problem was triggered when running the new uffd poison mm selftest for HUGETLB memory. This test (and the uffd poison feature) was merged for v6.5-rc7. Ideally, I'd like to get this fix in for v6.6 and I've cc'ed stable (correctly this time) to get it backported to v6.5, where the issue first showed up. Description of Bug ================== arm64's huge pte implementation supports multiple huge page sizes, some of which are implemented in the page table with multiple contiguous entries. So set_huge_pte_at() needs to work out how big the logical pte is, so that it can also work out how many physical ptes (or pmds) need to be written. It previously did this by grabbing the folio out of the pte and querying its size. However, there are cases when the pte being set is actually a swap entry. But this also used to work fine, because for huge ptes, we only ever saw migration entries and hwpoison entries. And both of these types of swap entries have a PFN embedded, so the code would grab that and everything still worked out. But over time, more calls to set_huge_pte_at() have been added that set swap entry types that do not embed a PFN. And this causes the code to go bang. The triggering case is for the uffd poison test, commit |
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Liam R. Howlett
|
a8091f039c |
maple_tree: add MAS_UNDERFLOW and MAS_OVERFLOW states
When updating the maple tree iterator to avoid rewalks, an issue was
introduced when shifting beyond the limits. This can be seen by trying to
go to the previous address of 0, which would set the maple node to
MAS_NONE and keep the range as the last entry.
Subsequent calls to mas_find() would then search upwards from mas->last
and skip the value at mas->index/mas->last. This showed up as a bug in
mprotect which skips the actual VMA at the current range after attempting
to go to the previous VMA from 0.
Since MAS_NONE may already be set when searching for a value that isn't
contained within a node, changing the handling of MAS_NONE in mas_find()
would make the code more complicated and error prone. Furthermore, there
was no way to tell which limit was hit, and thus which action to take
(next or the entry at the current range).
This solution is to add two states to track what happened with the
previous iterator action. This allows for the expected behaviour of the
next command to return the correct item (either the item at the range
requested, or the next/previous).
Tests are also added and updated accordingly.
Link: https://lkml.kernel.org/r/20230921181236.509072-3-Liam.Howlett@oracle.com
Link: https://gist.github.com/heatd/85d2971fae1501b55b6ea401fbbe485b
Link: https://lore.kernel.org/linux-mm/20230921181236.509072-1-Liam.Howlett@oracle.com/
Fixes:
|
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|
Liam R. Howlett
|
5c590804b6 |
maple_tree: add mas_is_active() to detect in-tree walks
Patch series "maple_tree: Fix mas_prev() state regression". Pedro Falcato retported an mprotect regression [1] which was bisected back to the iterator changes for maple tree. Root cause analysis showed the mas_prev() running off the end of the VMA space (previous from 0) followed by mas_find(), would skip the first value. This patchset introduces maple state underflow/overflow so the sequence of calls on the maple state will return what the user expects. Users who encounter this bug may see mprotect(), userfaultfd_register(), and mlock() fail on VMAs mapped with address 0. This patch (of 2): Instead of constantly checking each possibility of the maple state, create a fast path that will skip over checking unlikely states. Link: https://lkml.kernel.org/r/20230921181236.509072-1-Liam.Howlett@oracle.com Link: https://lkml.kernel.org/r/20230921181236.509072-2-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Pedro Falcato <pedro.falcato@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Pan Bian
|
7ee29facd8 |
nilfs2: fix potential use after free in nilfs_gccache_submit_read_data()
In nilfs_gccache_submit_read_data(), brelse(bh) is called to drop the
reference count of bh when the call to nilfs_dat_translate() fails. If
the reference count hits 0 and its owner page gets unlocked, bh may be
freed. However, bh->b_page is dereferenced to put the page after that,
which may result in a use-after-free bug. This patch moves the release
operation after unlocking and putting the page.
NOTE: The function in question is only called in GC, and in combination
with current userland tools, address translation using DAT does not occur
in that function, so the code path that causes this issue will not be
executed. However, it is possible to run that code path by intentionally
modifying the userland GC library or by calling the GC ioctl directly.
[konishi.ryusuke@gmail.com: NOTE added to the commit log]
Link: https://lkml.kernel.org/r/1543201709-53191-1-git-send-email-bianpan2016@163.com
Link: https://lkml.kernel.org/r/20230921141731.10073-1-konishi.ryusuke@gmail.com
Fixes:
|
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Matthew Wilcox (Oracle)
|
ce60f27bb6 |
mm: abstract moving to the next PFN
In order to fix the L1TF vulnerability, x86 can invert the PTE bits for
PROT_NONE VMAs, which means we cannot move from one PTE to the next by
adding 1 to the PFN field of the PTE. This results in the BUG reported at
[1].
Abstract advancing the PTE to the next PFN through a pte_next_pfn()
function/macro.
Link: https://lkml.kernel.org/r/20230920040958.866520-1-willy@infradead.org
Fixes:
|
||
|
Matthew Wilcox (Oracle)
|
a501a07030 |
mm: report success more often from filemap_map_folio_range()
Even though we had successfully mapped the relevant page, we would rarely
return success from filemap_map_folio_range(). That leads to falling back
from the VMA lock path to the mmap_lock path, which is a speed &
scalability issue. Found by inspection.
Link: https://lkml.kernel.org/r/20230920035336.854212-1-willy@infradead.org
Fixes:
|
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Greg Ungerer
|
7c31515857 |
fs: binfmt_elf_efpic: fix personality for ELF-FDPIC
The elf-fdpic loader hard sets the process personality to either
PER_LINUX_FDPIC for true elf-fdpic binaries or to PER_LINUX for normal ELF
binaries (in this case they would be constant displacement compiled with
-pie for example). The problem with that is that it will lose any other
bits that may be in the ELF header personality (such as the "bug
emulation" bits).
On the ARM architecture the ADDR_LIMIT_32BIT flag is used to signify a
normal 32bit binary - as opposed to a legacy 26bit address binary. This
matters since start_thread() will set the ARM CPSR register as required
based on this flag. If the elf-fdpic loader loses this bit the process
will be mis-configured and crash out pretty quickly.
Modify elf-fdpic loader personality setting so that it preserves the upper
three bytes by using the SET_PERSONALITY macro to set it. This macro in
the generic case sets PER_LINUX and preserves the upper bytes.
Architectures can override this for their specific use case, and ARM does
exactly this.
The problem shows up quite easily running under qemu using the ARM
architecture, but not necessarily on all types of real ARM hardware. If
the underlying ARM processor does not support the legacy 26-bit addressing
mode then everything will work as expected.
Link: https://lkml.kernel.org/r/20230907011808.2985083-1-gerg@kernel.org
Fixes:
|
||
|
Linus Torvalds
|
9f3ebbef74 |
Two SMB3 server fixes
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Merge tag '6.6-rc3-ksmbd-server-fixes' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
"Two SMB3 server fixes for null pointer dereferences:
- invalid SMB3 request case (fixes issue found in testing the read
compound patch)
- iovec error case in response processing"
* tag '6.6-rc3-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
ksmbd: check iov vector index in ksmbd_conn_write()
ksmbd: return invalid parameter error response if smb2 request is invalid
|
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|
Linus Torvalds
|
14c06b913d |
A series that fixes an involved "double watch error" deadlock in RBD
marked for stable and two cleanups. -----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAmUW5QwTHGlkcnlvbW92 QGdtYWlsLmNvbQAKCRBKf944AhHziw7+B/99D/BRIJUaCz8hm2xMZC3Yu6Cvi2de YlgHZBuHm5lmihzITEdoHTmWlIpgGchqjTaikCvVooKEe1w4sNr7nYFiXUFVw9sf W/I06dtlJlj2f4oyK91i4sIzpQKbXZznFDpTHThjRJt+uyUp3RYVbrCDMmGAnJv3 foppstycm5fe2Y2e/RgNyYOHY+EAjvS5UrpvT3lAX+iw5KXR1pyMBrFo8iICLPlZ TIPP4mwlVwb/WB1rGnxaK65RJxGuXLwuMWdLF9kq1ZeCld6owPH3x2RDax2+vMvA bZxI6gQymU2SquKiNseYF3kQ+2KdC5mfjmkoncOH79Je4JPHf7xa4LYZ =7/Ez -----END PGP SIGNATURE----- Merge tag 'ceph-for-6.6-rc4' of https://github.com/ceph/ceph-client Pull ceph fixes from Ilya Dryomov: "A series that fixes an involved 'double watch error' deadlock in RBD marked for stable and two cleanups" * tag 'ceph-for-6.6-rc4' of https://github.com/ceph/ceph-client: rbd: take header_rwsem in rbd_dev_refresh() only when updating rbd: decouple parent info read-in from updating rbd_dev rbd: decouple header read-in from updating rbd_dev->header rbd: move rbd_dev_refresh() definition Revert "ceph: make members in struct ceph_mds_request_args_ext a union" ceph: remove unnecessary check for NULL in parse_longname() |
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|
Linus Torvalds
|
10c0b6ba25 |
Bug fixes for 6.6-rc4:
* Include modifications made to commit "xfs: load uncached unlinked inodes into memory on demand" (Commit ID: |
||
|
Uwe Kleine-König
|
b0b88a585c |
MAINTAINERS: Fix Florian Fainelli's email address
Commit |
||
|
Linus Torvalds
|
95289e49f0 |
ATA fixes for 6.6-rc4
A larger than usual set of fixes for 6.6-rc4 due to the unexpected
number of fixes needed to address ATA disks suspend/resume issues.
In more details:
- Add missing additionalProperties on child nodes to the pata-common DT
bindings (Rob).
- Fix handling of the REPORT SUPPORTED OPERATION CODES command to
ignore reserved bits (Niklas).
- Increase port multiplier soft reset timeout to accomodate slow
devices and avoid issues on wakeup (Matthias).
- A couple of minor code fixes to avoid compilation warnings in
libata-core and libata-eh (me).
- Many patches from me to address suspend/resume issues, and in
particular a potential deadlock on resume due to the SCSI disk driver
resume operation not being synchronized with libata EH port resume
handling. This is addressed by changing the scsi disk driver disk
start/stop control to allow libata to execute disk suspend (spin
down) and resume (spin up) on its own during system suspend/resume.
Runtime suspend/resume control remains with the SCSI disk driver.
Other fixes include:
- Fix libata power management request issuing to avoid races.
- Establish a link between ATA ports and SCSI devices to order PM
operations.
- Fix device removal to avoid issues with driver rmmod removal.
- Fix synchronization of libata device rescan and SCSI disk resume
operation.
- Remove libsas PM operations as suspend/resume is handled directly
by the sas controller resume.
- Fix the SCSI disk driver to not issue commands to suspended disks,
thus avoiding potential system lock-up on resume.
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Merge tag 'ata-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ATA fixes from Damien Le Moal:
"A larger than usual set of fixes for 6.6-rc4 due to the unexpected
number of fixes needed to address ATA disks suspend/resume issues.
In more detail:
- Add missing additionalProperties on child nodes to the pata-common
DT bindings (Rob)
- Fix handling of the REPORT SUPPORTED OPERATION CODES command to
ignore reserved bits (Niklas)
- Increase port multiplier soft reset timeout to accomodate slow
devices and avoid issues on wakeup (Matthias)
- A couple of minor code fixes to avoid compilation warnings in
libata-core and libata-eh (me)
- Many patches from me to address suspend/resume issues, and in
particular a potential deadlock on resume due to the SCSI disk
driver resume operation not being synchronized with libata EH port
resume handling.
This is addressed by changing the scsi disk driver disk start/stop
control to allow libata to execute disk suspend (spin down) and
resume (spin up) on its own during system suspend/resume. Runtime
suspend/resume control remains with the SCSI disk driver.
Other fixes include:
- Fix libata power management request issuing to avoid races
- Establish a link between ATA ports and SCSI devices to order PM
operations
- Fix device removal to avoid issues with driver rmmod removal
- Fix synchronization of libata device rescan and SCSI disk resume
operation
- Remove libsas PM operations as suspend/resume is handled
directly by the sas controller resume
- Fix the SCSI disk driver to not issue commands to suspended
disks, thus avoiding potential system lock-up on resume"
* tag 'ata-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: libata-eh: Fix compilation warning in ata_eh_link_report()
ata: libata-core: Fix compilation warning in ata_dev_config_ncq()
scsi: sd: Do not issue commands to suspended disks on shutdown
ata: libata-core: Do not register PM operations for SAS ports
ata: libata-scsi: Fix delayed scsi_rescan_device() execution
scsi: Do not attempt to rescan suspended devices
ata: libata-scsi: Disable scsi device manage_system_start_stop
scsi: sd: Differentiate system and runtime start/stop management
ata: libata-scsi: link ata port and scsi device
ata: libata-core: Fix port and device removal
ata: libata-core: Fix ata_port_request_pm() locking
ata: libata-sata: increase PMP SRST timeout to 10s
ata: libata-scsi: ignore reserved bits for REPORT SUPPORTED OPERATION CODES
dt-bindings: ata: pata-common: Add missing additionalProperties on child nodes
|
||
|
Linus Torvalds
|
eafdc50713 |
block-6.6-2023-09-28
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||
|
Linus Torvalds
|
a98b95959b |
io_uring-6.6-2023-09-28
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|
Linus Torvalds
|
1c84724ccb |
slab fixes for 6.6-rc4
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