Upstream Rust's libs-api team has consensus for stabilizing some of
`feature(new_uninit)`, but not for `Box<MaybeUninit<T>>::write`. Instead,
we can use `MaybeUninit<T>::write`, so Rust for Linux can drop the
feature after stabilization. That will happen after merging, as the FCP
has completed [1].
This is required before stabilization because remaining-unstable API
will be divided into new features. This code doesn't know about those
yet. It can't: they haven't landed, as the relevant PR is blocked on
rustc's CI testing Rust-for-Linux without this patch.
[ The PR has landed [2] and will be released in Rust 1.82.0 (expected on
2024-10-17), so we could conditionally enable the new unstable feature
(`box_uninit_write` [3]) instead, but just for a single `unsafe` block
it is probably not worth it. For the time being, I added it to the
"nice to have" section of our unstable features list. - Miguel ]
Link: https://github.com/rust-lang/rust/issues/63291#issuecomment-2183022955 [1]
Link: https://github.com/rust-lang/rust/pull/129416 [2]
Link: https://github.com/rust-lang/rust/issues/129397 [3]
Signed-off-by: Jubilee Young <workingjubilee@gmail.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Trevor Gross <tmgross@umich.edu>
[ Reworded slightly. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
An unordered list in coding-guidelines.rst was indented, producing
a blockquote around it and making it look more indented than expected.
Remove the indentation to only output an unordered list.
Reported-by: Miguel Ojeda <ojeda@kernel.org>
Closes: https://github.com/Rust-for-Linux/linux/issues/1063
Fixes: d07479b211 ("docs: add Rust documentation")
Signed-off-by: Vincent Woltmann <vincent@woltmann.art>
Link: https://lore.kernel.org/r/20240816200339.2495875-1-vincent@woltmann.art
[ Reworded title. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
When allocating `struct gendisk`, `GenDiskBuilder` is using a dynamic
lock class key without registering the key. This is an incorrect use of
the API, which causes a `WARN` trace.
Fix the issue by using a static lock class key, which is more appropriate
for the situation anyway.
Fixes: 3253aba340 ("rust: block: introduce `kernel::block::mq` module")
Reported-by: Behme Dirk (XC-CP/ESB5) <Dirk.Behme@de.bosch.com>
Closes: https://rust-for-linux.zulipchat.com/#narrow/stream/x/topic/x/near/457090036
Signed-off-by: Andreas Hindborg <a.hindborg@samsung.com>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Link: https://lore.kernel.org/r/20240815074519.2684107-3-nmi@metaspace.dk
[ Applied `rustfmt`, reworded slightly and made Zulip link
a permalink. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Symbols in the bss segment are not currently exported. This is a problem
for Rust modules that link against statics, that are resident in the kernel
image. Thus export symbols in the bss segment.
Fixes: 2f7ab1267d ("Kbuild: add Rust support")
Signed-off-by: Andreas Hindborg <a.hindborg@samsung.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://lore.kernel.org/r/20240815074519.2684107-2-nmi@metaspace.dk
[ Reworded slightly. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Here are 2 driver fixes for regressions from 6.11-rc1 due to the driver
core change making a structure in a driver core callback const. These
were missed by all testing EXCEPT for what Bart happened to be running,
so I appreciate the fixes provided here for some odd/not-often-used
driver subsystems that nothing else happened to catch.
Both of these fixes have been in linux-next all week with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are two driver fixes for regressions from 6.11-rc1 due to the
driver core change making a structure in a driver core callback const.
These were missed by all testing EXCEPT for what Bart happened to be
running, so I appreciate the fixes provided here for some
odd/not-often-used driver subsystems that nothing else happened to
catch.
Both of these fixes have been in linux-next all week with no reported
issues"
* tag 'driver-core-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
mips: sgi-ip22: Fix the build
ARM: riscpc: ecard: Fix the build
Here are some small char/misc fixes for 6.11-rc4 to resolve reported
problems. Included in here are:
- fastrpc revert of a change that broke userspace
- xillybus fixes for reported issues
Half of these have been in linux-next this week with no reported
problems, I don't know if the last bit of xillybus driver changes made
it in, but they are "obviously correct" so will be safe :)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc fixes from Greg KH:
"Here are some small char/misc fixes for 6.11-rc4 to resolve reported
problems. Included in here are:
- fastrpc revert of a change that broke userspace
- xillybus fixes for reported issues
Half of these have been in linux-next this week with no reported
problems, I don't know if the last bit of xillybus driver changes made
it in, but they are 'obviously correct' so will be safe :)"
* tag 'char-misc-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
char: xillybus: Check USB endpoints when probing device
char: xillybus: Refine workqueue handling
Revert "misc: fastrpc: Restrict untrusted app to attach to privileged PD"
char: xillybus: Don't destroy workqueue from work item running on it
Here are some small tty and serial driver fixes for 6.11-rc4 to resolve
some reported problems. Included in here are:
- conmakehash.c userspace build issues
- fsl_lpuart driver fix
- 8250_omap revert for reported regression
- atmel_serial rts flag fix
All of these have been in linux-next this week with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial fixes from Greg KH:
"Here are some small tty and serial driver fixes for 6.11-rc4 to
resolve some reported problems. Included in here are:
- conmakehash.c userspace build issues
- fsl_lpuart driver fix
- 8250_omap revert for reported regression
- atmel_serial rts flag fix
All of these have been in linux-next this week with no reported
issues"
* tag 'tty-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "serial: 8250_omap: Set the console genpd always on if no console suspend"
tty: atmel_serial: use the correct RTS flag.
tty: vt: conmakehash: remove non-portable code printing comment header
tty: serial: fsl_lpuart: mark last busy before uart_add_one_port
Here are some small USB and Thunderbolt driver fixes for 6.11-rc4 to
resolve some reported issues. Included in here are:
- thunderbolt driver fixes for reported problems
- typec driver fixes
- xhci fixes
- new device id for ljca usb driver
All of these have been in linux-next this week with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt driver fixes from Greg KH:
"Here are some small USB and Thunderbolt driver fixes for 6.11-rc4 to
resolve some reported issues. Included in here are:
- thunderbolt driver fixes for reported problems
- typec driver fixes
- xhci fixes
- new device id for ljca usb driver
All of these have been in linux-next this week with no reported
issues"
* tag 'usb-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
xhci: Fix Panther point NULL pointer deref at full-speed re-enumeration
usb: misc: ljca: Add Lunar Lake ljca GPIO HID to ljca_gpio_hids[]
Revert "usb: typec: tcpm: clear pd_event queue in PORT_RESET"
usb: typec: ucsi: Fix the return value of ucsi_run_command()
usb: xhci: fix duplicate stall handling in handle_tx_event()
usb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()
thunderbolt: Mark XDomain as unplugged when router is removed
thunderbolt: Fix memory leaks in {port|retimer}_sb_regs_write()
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Merge tag 'for-6.11-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull more btrfs fixes from David Sterba:
"A more fixes. We got reports that shrinker added in 6.10 still causes
latency spikes and the fixes don't handle all corner cases. Due to
summer holidays we're taking a shortcut to disable it for release
builds and will fix it in the near future.
- only enable extent map shrinker for DEBUG builds, temporary quick
fix to avoid latency spikes for regular builds
- update target inode's ctime on unlink, mandated by POSIX
- properly take lock to read/update block group's zoned variables
- add counted_by() annotations"
* tag 'for-6.11-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: only enable extent map shrinker for DEBUG builds
btrfs: zoned: properly take lock to read/update block group's zoned variables
btrfs: tree-checker: add dev extent item checks
btrfs: update target inode's ctime on unlink
btrfs: send: annotate struct name_cache_entry with __counted_by()
fuse_notify_store(), unlike fuse_do_readpage(), does not enable page
zeroing (because it can be used to change partial page contents).
So fuse_notify_store() must be more careful to fully initialize page
contents (including parts of the page that are beyond end-of-file)
before marking the page uptodate.
The current code can leave beyond-EOF page contents uninitialized, which
makes these uninitialized page contents visible to userspace via mmap().
This is an information leak, but only affects systems which do not
enable init-on-alloc (via CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y or the
corresponding kernel command line parameter).
Link: https://bugs.chromium.org/p/project-zero/issues/detail?id=2574
Cc: stable@kernel.org
Fixes: a1d75f2582 ("fuse: add store request")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
the others pertain to post-6.10 issues.
As usual with these merges, singletons and doubletons all over the place,
no identifiable-by-me theme. Please see the lovingly curated changelogs
to get the skinny.
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Merge tag 'mm-hotfixes-stable-2024-08-17-19-34' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"16 hotfixes. All except one are for MM. 10 of these are cc:stable and
the others pertain to post-6.10 issues.
As usual with these merges, singletons and doubletons all over the
place, no identifiable-by-me theme. Please see the lovingly curated
changelogs to get the skinny"
* tag 'mm-hotfixes-stable-2024-08-17-19-34' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm/migrate: fix deadlock in migrate_pages_batch() on large folios
alloc_tag: mark pages reserved during CMA activation as not tagged
alloc_tag: introduce clear_page_tag_ref() helper function
crash: fix riscv64 crash memory reserve dead loop
selftests: memfd_secret: don't build memfd_secret test on unsupported arches
mm: fix endless reclaim on machines with unaccepted memory
selftests/mm: compaction_test: fix off by one in check_compaction()
mm/numa: no task_numa_fault() call if PMD is changed
mm/numa: no task_numa_fault() call if PTE is changed
mm/vmalloc: fix page mapping if vm_area_alloc_pages() with high order fallback to order 0
mm/memory-failure: use raw_spinlock_t in struct memory_failure_cpu
mm: don't account memmap per-node
mm: add system wide stats items category
mm: don't account memmap on failure
mm/hugetlb: fix hugetlb vs. core-mm PT locking
mseal: fix is_madv_discard()
- Fix crashes on 85xx with some configs since the recent hugepd rework.
- Fix boot warning with hugepages and CONFIG_DEBUG_VIRTUAL on some platforms.
- Don't enable offline cores when changing SMT modes, to match existing
userspace behaviour.
Thanks to: Christophe Leroy, Dr. David Alan Gilbert, Guenter Roeck, Nysal Jan
K.A, Shrikanth Hegde, Thomas Gleixner, Tyrel Datwyler.
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Merge tag 'powerpc-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix crashes on 85xx with some configs since the recent hugepd rework.
- Fix boot warning with hugepages and CONFIG_DEBUG_VIRTUAL on some
platforms.
- Don't enable offline cores when changing SMT modes, to match existing
userspace behaviour.
Thanks to Christophe Leroy, Dr. David Alan Gilbert, Guenter Roeck, Nysal
Jan K.A, Shrikanth Hegde, Thomas Gleixner, and Tyrel Datwyler.
* tag 'powerpc-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/topology: Check if a core is online
cpu/SMT: Enable SMT only if a core is online
powerpc/mm: Fix boot warning with hugepages and CONFIG_DEBUG_VIRTUAL
powerpc/mm: Fix size of allocated PGDIR
soc: fsl: qbman: remove unused struct 'cgr_comp'
I2C core needs to fix a fix from rc3 by replacing IS_ENABLED() with
IS_REACHABLE().
For host drivers, there are two fixes in this update:
Tegra I2C Controller: Addresses a potential double-locking issue
during probe. ACPI devices are not IRQ-safe when invoking runtime
suspend and resume functions, so the irq_safe flag should not be
set.
Qualcomm GENI I2C Controller: Fixes an oversight in the exit path
of the runtime_resume() function, which was missed in the
previous release.
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Merge tag 'i2c-for-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"I2C core fix replacing IS_ENABLED() with IS_REACHABLE()
For host drivers, there are two fixes:
- Tegra I2C Controller: Addresses a potential double-locking issue
during probe. ACPI devices are not IRQ-safe when invoking runtime
suspend and resume functions, so the irq_safe flag should not be
set.
- Qualcomm GENI I2C Controller: Fixes an oversight in the exit path
of the runtime_resume() function, which was missed in the previous
release"
* tag 'i2c-for-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: tegra: Do not mark ACPI devices as irq safe
i2c: Use IS_REACHABLE() for substituting empty ACPI functions
i2c: qcom-geni: Add missing geni_icc_disable in geni_i2c_runtime_resume
Two small fixes to the mpi3mr driver. One to avoid oversize
allocations in tracing and the other to fix an uninitialized spinlock
in the user to driver feature request code (used to trigger dumps and
the like).
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two small fixes to the mpi3mr driver. One to avoid oversize
allocations in tracing and the other to fix an uninitialized spinlock
in the user to driver feature request code (used to trigger dumps and
the like)"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: mpi3mr: Avoid MAX_PAGE_ORDER WARNING for buffer allocations
scsi: mpi3mr: Add missing spin_lock_init() for mrioc->trigger_lock
* Check for presence of only 'attr' feature before scrubbing an inode's
attribute fork.
* Restore the behaviour of setting AIL thread to TASK_INTERRUPTIBLE for
long (i.e. 50ms) sleep durations to prevent high load averages.
* Do not allow users to change the realtime flag of a file unless the
datadev and rtdev both support fsdax access modes.
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.11-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Chandan Babu:
- Check for presence of only 'attr' feature before scrubbing an inode's
attribute fork.
- Restore the behaviour of setting AIL thread to TASK_INTERRUPTIBLE for
long (i.e. 50ms) sleep durations to prevent high load averages.
- Do not allow users to change the realtime flag of a file unless the
datadev and rtdev both support fsdax access modes.
* tag 'xfs-6.11-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: conditionally allow FS_XFLAG_REALTIME changes if S_DAX is set
xfs: revert AIL TASK_KILLABLE threshold
xfs: attr forks require attr, not attr2
- New on disk format version, bcachefs_metadata_version_disk_accounting_inum
This adds one more disk accounting counter, which counts disk usage and
number of extents per inode number. This lets us track fragmentation,
for implementing defragmentation later, and it also counts disk usage
per inode in all snapshots, which will be a useful thing to expose to
users.
- One performance issue we've observed is threads spinning when they
should be waiting for dirty keys in the key cache to be flushed by
journal reclaim, so we now have hysteresis for the waiting thread, as
well as improving the tracepoint and a new time_stat, for tracking time
blocked waiting on key cache flushing.
And, various assorted smaller fixes.
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Merge tag 'bcachefs-2024-08-16' of git://evilpiepirate.org/bcachefs
Pull bcachefs fixes from Kent OverstreetL
- New on disk format version, bcachefs_metadata_version_disk_accounting_inum
This adds one more disk accounting counter, which counts disk usage
and number of extents per inode number. This lets us track
fragmentation, for implementing defragmentation later, and it also
counts disk usage per inode in all snapshots, which will be a useful
thing to expose to users.
- One performance issue we've observed is threads spinning when they
should be waiting for dirty keys in the key cache to be flushed by
journal reclaim, so we now have hysteresis for the waiting thread, as
well as improving the tracepoint and a new time_stat, for tracking
time blocked waiting on key cache flushing.
... and various assorted smaller fixes.
* tag 'bcachefs-2024-08-16' of git://evilpiepirate.org/bcachefs:
bcachefs: Fix locking in __bch2_trans_mark_dev_sb()
bcachefs: fix incorrect i_state usage
bcachefs: avoid overflowing LRU_TIME_BITS for cached data lru
bcachefs: Fix forgetting to pass trans to fsck_err()
bcachefs: Increase size of cuckoo hash table on too many rehashes
bcachefs: bcachefs_metadata_version_disk_accounting_inum
bcachefs: Kill __bch2_accounting_mem_mod()
bcachefs: Make bkey_fsck_err() a wrapper around fsck_err()
bcachefs: Fix warning in __bch2_fsck_err() for trans not passed in
bcachefs: Add a time_stat for blocked on key cache flush
bcachefs: Improve trans_blocked_journal_reclaim tracepoint
bcachefs: Add hysteresis to waiting on btree key cache flush
lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
bcachefs: Convert for_each_btree_node() to lockrestart_do()
bcachefs: Add missing downgrade table entry
bcachefs: disk accounting: ignore unknown types
bcachefs: bch2_accounting_invalid() fixup
bcachefs: Fix bch2_trigger_alloc when upgrading from old versions
bcachefs: delete faulty fastpath in bch2_btree_path_traverse_cached()
We run this in full RW mode now, so we have to guard against the
superblock buffer being reallocated.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Merge tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull memcg-v1 fix from Al Viro:
"memcg_write_event_control() oops fix"
* tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
memcg_write_event_control(): fix a user-triggerable oops
- Fix the arm64 __get_mem_asm() to use the _ASM_EXTABLE_##type##ACCESS()
macro instead of the *_ERR() one in order to avoid writing -EFAULT to
the value register in case of a fault
- Initialise all elements of the acpi_early_node_map[] to NUMA_NO_NODE.
Prior to this fix, only the first element was initialised
- Move the KASAN random tag seed initialisation after the per-CPU areas
have been initialised (prng_state is __percpu)
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Fix the arm64 __get_mem_asm() to use the _ASM_EXTABLE_##type##ACCESS()
macro instead of the *_ERR() one in order to avoid writing -EFAULT to
the value register in case of a fault
- Initialise all elements of the acpi_early_node_map[] to NUMA_NO_NODE.
Prior to this fix, only the first element was initialised
- Move the KASAN random tag seed initialisation after the per-CPU areas
have been initialised (prng_state is __percpu)
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Fix KASAN random tag seed initialization
arm64: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE
arm64: uaccess: correct thinko in __get_mem_asm()
critical so that it isn't turned off during late init which breaks
emmc-sdio.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fix from Stephen Boyd:
"One fix for the new T-Head TH1520 clk driver that marks a bus clk
critical so that it isn't turned off during late init which breaks
emmc-sdio"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: thead: fix dependency on clk_ignore_unused
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Merge tag 'block-6.11-20240824' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- Fix corruption issues with s390/dasd (Eric, Stefan)
- Fix a misuse of non irq locking grab of a lock (Li)
- MD pull request with a single data corruption fix for raid1 (Yu)
* tag 'block-6.11-20240824' of git://git.kernel.dk/linux:
block: Fix lockdep warning in blk_mq_mark_tag_wait
md/raid1: Fix data corruption for degraded array with slow disk
s390/dasd: fix error recovery leading to data corruption on ESE devices
s390/dasd: Remove DMA alignment
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Merge tag 'io_uring-6.11-20240824' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
- Fix a comment in the uapi header using the wrong member name (Caleb)
- Fix KCSAN warning for a debug check in sqpoll (me)
- Two more NAPI tweaks (Olivier)
* tag 'io_uring-6.11-20240824' of git://git.kernel.dk/linux:
io_uring: fix user_data field name in comment
io_uring/sqpoll: annotate debug task == current with data_race()
io_uring/napi: remove duplicate io_napi_entry timeout assignation
io_uring/napi: check napi_enabled in io_napi_add() before proceeding
Fix a Bang-bang thermal governor issue causing it to fail to reset the
state of cooling devices if they are "on" to start with, but the thermal
zone temperature is always below the corresponding trip point (Rafael
Wysocki).
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Merge tag 'thermal-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control fix from Rafael Wysocki:
"Fix a Bang-bang thermal governor issue causing it to fail to reset the
state of cooling devices if they are 'on' to start with, but the
thermal zone temperature is always below the corresponding trip point
(Rafael Wysocki)"
* tag 'thermal-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: gov_bang_bang: Use governor_data to reduce overhead
thermal: gov_bang_bang: Add .manage() callback
thermal: gov_bang_bang: Split bang_bang_control()
thermal: gov_bang_bang: Call __thermal_cdev_update() directly
Fix an issue related to the ACPI EC device handling that causes the
_REG control method to be evaluated for EC operation regions that are
not expected to be used which confuses the platform firmware and
provokes various types of misbehavior on some systems (Rafael Wysocki).
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Merge tag 'acpi-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Fix an issue related to the ACPI EC device handling that causes the
_REG control method to be evaluated for EC operation regions that are
not expected to be used.
This confuses the platform firmware and provokes various types of
misbehavior on some systems (Rafael Wysocki)"
* tag 'acpi-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: EC: Evaluate _REG outside the EC scope more carefully
ACPICA: Add a depth argument to acpi_execute_reg_methods()
Revert "ACPI: EC: Evaluate orphan _REG under EC device"
Commit f467fee48d ("block: move the dax flag to queue_limits") broke
the DAX tests by skipping over the legacy pmem mapping pages case.
- Set the DAX flag in this case as well.
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Merge tag 'libnvdimm-fixes-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fix from Ira Weiny:
"Commit f467fee48d ("block: move the dax flag to queue_limits") broke
the DAX tests by skipping over the legacy pmem mapping pages case.
Set the DAX flag in this case as well"
* tag 'libnvdimm-fixes-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nvdimm/pmem: Set dax flag for all 'PFN_MAP' cases
- Fix '-Os' Rust 1.80.0+ builds adding more intrinsics (also tweaked
in upstream Rust for the upcoming 1.82.0).
- Fix support for the latest version of rust-analyzer due to a change
on rust-analyzer config file semantics (considered a fix since most
developers use the latest version of the tool, which is the only one
actually supported by upstream). I am discussing stability of the
config file with upstream -- they may be able to start versioning it.
- Fix GCC 14 builds due to '-fmin-function-alignment' not skipped for
libclang (bindgen).
- A couple Kconfig fixes around '{RUSTC,BINDGEN}_VERSION_TEXT' to
suppress error messages in a foreign architecture chroot and to use a
proper default format.
- Clean 'rust-analyzer' target warning due to missing recursive make
invocation mark.
- Clean Clippy warning due to missing indentation in docs.
- Clean LLVM 19 build warning due to removed 3dnow feature upstream.
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Merge tag 'rust-fixes-6.11' of https://github.com/Rust-for-Linux/linux
Pull rust fixes from Miguel Ojeda:
- Fix '-Os' Rust 1.80.0+ builds adding more intrinsics (also tweaked in
upstream Rust for the upcoming 1.82.0).
- Fix support for the latest version of rust-analyzer due to a change
on rust-analyzer config file semantics (considered a fix since most
developers use the latest version of the tool, which is the only one
actually supported by upstream). I am discussing stability of the
config file with upstream -- they may be able to start versioning it.
- Fix GCC 14 builds due to '-fmin-function-alignment' not skipped for
libclang (bindgen).
- A couple Kconfig fixes around '{RUSTC,BINDGEN}_VERSION_TEXT' to
suppress error messages in a foreign architecture chroot and to use a
proper default format.
- Clean 'rust-analyzer' target warning due to missing recursive make
invocation mark.
- Clean Clippy warning due to missing indentation in docs.
- Clean LLVM 19 build warning due to removed 3dnow feature upstream.
* tag 'rust-fixes-6.11' of https://github.com/Rust-for-Linux/linux:
rust: x86: remove `-3dnow{,a}` from target features
kbuild: rust-analyzer: mark `rust_is_available.sh` invocation as recursive
rust: add intrinsics to fix `-Os` builds
kbuild: rust: skip -fmin-function-alignment in bindgen flags
rust: Support latest version of `rust-analyzer`
rust: macros: indent list item in `module!`'s docs
rust: fix the default format for CONFIG_{RUSTC,BINDGEN}_VERSION_TEXT
rust: suppress error messages from CONFIG_{RUSTC,BINDGEN}_VERSION_TEXT
* The text patching global icache flush has been reintroduced.
* A fix for the syscall entry code to correctly initialize a0, which
manifests as a bug in strace.
* XIP kernels now map the entire kernel, which fixes boot under at least
DEBUG_VIRTUAL=y.
* The acpi_early_node_map initializer now initializes all nodes.
* A fix for a OOB access in the Andes vendor extension probing code.
* A new key for scalar misaligned access performance in hwprobe, which
correctly treat the values as an enum (as opposed to a bitmap).
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Merge tag 'riscv-for-linus-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- reintroduce the text patching global icache flush
- fix syscall entry code to correctly initialize a0, which manifested
as a strace bug
- XIP kernels now map the entire kernel, which fixes boot under at
least DEBUG_VIRTUAL=y
- initialize all nodes in the acpi_early_node_map initializer
- fix OOB access in the Andes vendor extension probing code
- A new key for scalar misaligned access performance in hwprobe, which
correctly treat the values as an enum (as opposed to a bitmap)
* tag 'riscv-for-linus-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Fix out-of-bounds when accessing Andes per hart vendor extension array
RISC-V: hwprobe: Add SCALAR to misaligned perf defines
RISC-V: hwprobe: Add MISALIGNED_PERF key
RISC-V: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE
riscv: change XIP's kernel_map.size to be size of the entire kernel
riscv: entry: always initialize regs->a0 to -ENOSYS
riscv: Re-introduce global icache flush in patch_text_XXX()
- Prevent a NULL pointer dereference in the error path of RTLA tool
- Fix an infinite loop bug when reading from the ring buffer when closed.
If there's a thread trying to read the ring buffer and it gets closed
by another thread, the one reading will go into an infinite loop
when the buffer is empty instead of exiting back to user space.
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Merge tag 'trace-v6.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
"A couple of fixes for tracing:
- Prevent a NULL pointer dereference in the error path of RTLA tool
- Fix an infinite loop bug when reading from the ring buffer when
closed. If there's a thread trying to read the ring buffer and it
gets closed by another thread, the one reading will go into an
infinite loop when the buffer is empty instead of exiting back to
user space"
* tag 'trace-v6.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
rtla/osnoise: Prevent NULL dereference in error handling
tracing: Return from tracing_buffers_read() if the file has been closed
Contains two bug fixes for a memory corruption bug and a memory leak bug
in the DCP trusted keys type. Just as a remainder DCP was a crypto
coprocessor in i.MX SoC's.
BR, Jarkko
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Merge tag 'keys-trusted-next-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd
Pull key fixes from Jarkko Sakkinen:
"Two bug fixes for a memory corruption bug and a memory leak bug in the
DCP trusted keys type.
Just as a reminder DCP was a crypto coprocessor in i.MX SoCs"
* tag 'keys-trusted-next-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
KEYS: trusted: dcp: fix leak of blob encryption key
KEYS: trusted: fix DCP blob payload length assignment
Including:
- Bring back a lost return statement in io-page-fault code
- Remove an unused function declaration
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Merge tag 'iommu-fixes-v6.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu fixes from Joerg Roedel:
- Bring back a lost return statement in io-page-fault code
- Remove an unused function declaration
* tag 'iommu-fixes-v6.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
iommu: Remove unused declaration iommu_sva_unbind_gpasid()
iommu: Restore lost return in iommu_report_device_fault()
- add the shutdown() callback to gpio-mlxbf3 in order to disable
interrupts during graceful reboot
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Merge tag 'gpio-fixes-for-v6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fix from Bartosz Golaszewski:
- add the shutdown() callback to gpio-mlxbf3 in order to disable
interrupts during graceful reboot
* tag 'gpio-fixes-for-v6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: mlxbf3: Support shutdown() function
All small fixes, mostly for usual suspects, HD-audio and USB-audio
device-specific fixes / quirks. The Cirrus codec support took the
update of SPI header as well. Other than that, there is a regression
fix in the sanity check of ALSA timer code.
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Merge tag 'sound-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"All small fixes, mostly for usual suspects, HD-audio and USB-audio
device-specific fixes / quirks. The Cirrus codec support took the
update of SPI header as well. Other than that, there is a regression
fix in the sanity check of ALSA timer code"
* tag 'sound-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/tas2781: Use correct endian conversion
ALSA: usb-audio: Support Yamaha P-125 quirk entry
ALSA: hda: cs35l41: Remove redundant call to hda_cs_dsp_control_remove()
ALSA: hda: cs35l56: Remove redundant call to hda_cs_dsp_control_remove()
ALSA: hda/tas2781: fix wrong calibrated data order
ALSA: usb-audio: Add delay quirk for VIVO USB-C-XE710 HEADSET
ALSA: hda/realtek: Add support for new HP G12 laptops
ALSA: hda/realtek: Fix noise from speakers on Lenovo IdeaPad 3 15IAU7
ALSA: timer: Relax start tick time check for slave timer elements
spi: Add empty versions of ACPI functions
mediatek:
- fix cursor crash
amdgpu:
- Fix MES ring buffer overflow
- DCN 3.5 fix
- DCN 3.2.1 fix
- DP MST fix
- Cursor fixes
- JPEG fixes
- Context ops validation
- MES 12 fixes
- VCN 5.0 fix
- HDP fix
panel:
- dt bindings style fix
- orientation quirks
rockchip:
- inno-hdmi: fix infoframe upload
v3d:
- fix OOB access in v3d_csd_job_run()
xe:
- Validate user fence during creation
- Fix use after free when client stats are captured
- SRIOV fixes
- Runtime PM fixes
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Merge tag 'drm-fixes-2024-08-16' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Weekly drm fixes, mostly amdgpu and xe. The larger amdgpu fix is for a
new IP block introduced in rc1, so should be fine. The xe fixes
contain some missed fixes from the end of the previous round along
with some fixes which required precursor changes, but otherwise
everything seems fine,
mediatek:
- fix cursor crash
amdgpu:
- Fix MES ring buffer overflow
- DCN 3.5 fix
- DCN 3.2.1 fix
- DP MST fix
- Cursor fixes
- JPEG fixes
- Context ops validation
- MES 12 fixes
- VCN 5.0 fix
- HDP fix
panel:
- dt bindings style fix
- orientation quirks
rockchip:
- inno-hdmi: fix infoframe upload
v3d:
- fix OOB access in v3d_csd_job_run()
xe:
- Validate user fence during creation
- Fix use after free when client stats are captured
- SRIOV fixes
- Runtime PM fixes"
* tag 'drm-fixes-2024-08-16' of https://gitlab.freedesktop.org/drm/kernel: (37 commits)
drm/xe: Hold a PM ref when GT TLB invalidations are inflight
drm/xe: Drop xe_gt_tlb_invalidation_wait
drm/xe: Add xe_gt_tlb_invalidation_fence_init helper
drm/xe/pf: Fix VF config validation on multi-GT platforms
drm/xe: Build PM into GuC CT layer
drm/xe/vf: Fix register value lookup
drm/xe: Fix use after free when client stats are captured
drm/xe: Take a ref to xe file when user creates a VM
drm/xe: Add ref counting for xe_file
drm/xe: Move part of xe_file cleanup to a helper
drm/xe: Validate user fence during creation
drm/rockchip: inno-hdmi: Fix infoframe upload
drm/amd/amdgpu: add HDP_SD support on gc 12.0.0/1
drm/amdgpu: Update kmd_fw_shared for VCN5
drm/amd/amdgpu: command submission parser for JPEG
drm/amdgpu/mes12: fix suspend issue
drm/amdgpu/mes12: sw/hw fini for unified mes
drm/amdgpu/mes12: configure two pipes hardware resources
drm/amdgpu/mes12: adjust mes12 sw/hw init for multiple pipes
drm/amdgpu/mes12: add mes pipe switch support
...
Tegra I2C Controller: Addresses a potential double-locking issue
during probe. ACPI devices are not IRQ-safe when invoking runtime
suspend and resume functions, so the irq_safe flag should not be
set.
Qualcomm GENI I2C Controller: Fixes an oversight in the exit path
of the runtime_resume() function, which was missed in the
previous release.
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Merge tag 'i2c-host-fixes-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-current
Two fixes in this update:
Tegra I2C Controller: Addresses a potential double-locking issue
during probe. ACPI devices are not IRQ-safe when invoking runtime
suspend and resume functions, so the irq_safe flag should not be
set.
Qualcomm GENI I2C Controller: Fixes an oversight in the exit path
of the runtime_resume() function, which was missed in the
previous release.
After running once, the for_each_trip_desc() loop in
bang_bang_manage() is pure needless overhead because it is not going to
make any changes unless a new cooling device has been bound to one of
the trips in the thermal zone or the system is resuming from sleep.
For this reason, make bang_bang_manage() set governor_data for the
thermal zone and check it upfront to decide whether or not it needs to
do anything.
However, governor_data needs to be reset in some cases to let
bang_bang_manage() know that it should walk the trips again, so add an
.update_tz() callback to the governor and make the core additionally
invoke it during system resume.
To avoid affecting the other users of that callback unnecessarily, add
a special notification reason for system resume, THERMAL_TZ_RESUME, and
also pass it to __thermal_zone_device_update() called during system
resume for consistency.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Kästle <peter@piie.net>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Cc: 6.10+ <stable@vger.kernel.org> # 6.10+
Link: https://patch.msgid.link/2285575.iZASKD2KPV@rjwysocki.net
After recent changes, the Bang-bang governor may not adjust the
initial configuration of cooling devices to the actual situation.
Namely, if a cooling device bound to a certain trip point starts in
the "on" state and the thermal zone temperature is below the threshold
of that trip point, the trip point may never be crossed on the way up
in which case the state of the cooling device will never be adjusted
because the thermal core will never invoke the governor's
.trip_crossed() callback. [Note that there is no issue if the zone
temperature is at the trip threshold or above it to start with because
.trip_crossed() will be invoked then to indicate the start of thermal
mitigation for the given trip.]
To address this, add a .manage() callback to the Bang-bang governor
and use it to ensure that all of the thermal instances managed by the
governor have been initialized properly and the states of all of the
cooling devices involved have been adjusted to the current zone
temperature as appropriate.
Fixes: 530c932bdf ("thermal: gov_bang_bang: Use .trip_crossed() instead of .throttle()")
Link: https://lore.kernel.org/linux-pm/1bfbbae5-42b0-4c7d-9544-e98855715294@piie.net/
Cc: 6.10+ <stable@vger.kernel.org> # 6.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Kästle <peter@piie.net>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Link: https://patch.msgid.link/8419356.T7Z3S40VBb@rjwysocki.net
Move the setting of the thermal instance target state from
bang_bang_control() into a separate function that will be also called
in a different place going forward.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Kästle <peter@piie.net>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Cc: 6.10+ <stable@vger.kernel.org> # 6.10+
Link: https://patch.msgid.link/3313587.aeNJFYEL58@rjwysocki.net
Instead of clearing the "updated" flag for each cooling device
affected by the trip point crossing in bang_bang_control() and
walking all thermal instances to run thermal_cdev_update() for all
of the affected cooling devices, call __thermal_cdev_update()
directly for each of them.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Kästle <peter@piie.net>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Cc: 6.10+ <stable@vger.kernel.org> # 6.10+
Link: https://patch.msgid.link/13583081.uLZWGnKmhe@rjwysocki.net
