Kibaek Yoo [Tue, 24 Feb 2026 04:49:46 +0000 (13:49 +0900)]
staging: nvec: fix block comment style in nvec_interrupt()
Fix multi-line block comment to use the preferred kernel comment style
with leading asterisks on each line and a trailing */ on a separate
line, as reported by checkpatch.pl.
Remove unnecessary parentheses around variables and struct members
in rtw_sta_mgt.c to comply with the Linux kernel coding style.
This issue was reported by checkpatch.pl.
The affected code used a mix of tabs and spaces or excessive
indentation, making it misleading to read. Align the lines with the
surrounding code using tabs.
While at it, wrap long lines in HalPhyRf_8723B.c to silence checkpatch
warnings.
Bryant Boatright [Tue, 17 Feb 2026 14:54:19 +0000 (14:54 +0000)]
staging: rtl8723bs: Rename camel case enumeration
Rename camel case enumeration to snake case and expand enumeration name
for clarity. Update indentation of function prototype/definition based
on new name length. Move enumeration definition from single line to
multi-line definition.
Khushal Chitturi [Thu, 12 Feb 2026 14:21:29 +0000 (19:51 +0530)]
staging: rtl8723bs: use bool for traffic_status_watchdog()
This patch changes the return type of traffic_status_watchdog(),
its parameter, and its local variables from u8 to bool as they
represent boolean state.
Haroen Tmimi [Tue, 10 Feb 2026 18:56:30 +0000 (19:56 +0100)]
staging: rtl8723bs: remove shadowed variable in sdio_halinit
The variable 'bMacPwrCtrlOn' was redeclared in the function
CardEnable, shadowing a variable of the same name declared at the
top of the function (line 21).
Remove the redundant 'u8' type declaration to use the existing outer
variable and resolve a -Wshadow warning.
Haroen Tmimi [Tue, 10 Feb 2026 16:16:28 +0000 (17:16 +0100)]
staging: rtl8723bs: remove explicit comparisons to false in rtw_ap.c
Fix checkpatch.pl checks regarding error prone boolean comparisons.
Replace explicit comparisons to false with the logical NOT operator
to improve readability and match kernel coding style.
These instances were remaining after recent cleanups in this file.
Refactor the device tree parsing logic in axis_fifo_probe() to reduce
verbosity and simplify error handling.
Remove the verbose error logging and goto logic. Instead, check
of_property_read_u32() return values directly and propagate error codes
immediately. This aligns the driver with modern kernel standards by
removing unnecessary error messages during probe.
Update has_rx_fifo and has_tx_fifo types from int to u32 in struct
axis_fifo.
The of_property_read_u32() function expects a pointer to u32. Although
the current code works correctly with int, using u32 aligns the data
structure with the Device Tree API and prevents potential
type-mismatch issues.
staging: rtl8723bs: remove redundant NULL check on premainder_ie
premainder_ie is computed as pwps_ie + wps_ielen, where pwps_ie is
already validated non-NULL earlier in the function. Pointer arithmetic
on a non-NULL pointer can never yield NULL, making this check always
true and misleading. Replace with a simple check on remainder_ielen.
Artem Lytkin [Mon, 16 Feb 2026 20:20:11 +0000 (20:20 +0000)]
staging: nvec: propagate error codes in tegra_nvec_probe()
Several error paths in tegra_nvec_probe() return -ENODEV instead of
propagating the actual error code from the called function. This
prevents probe deferral from working correctly when a dependency
(clock, IRQ) is not yet available.
Fix this for platform_get_irq(), devm_clk_get(), and
devm_request_irq() by propagating their return values. Use
dev_err_probe() for the latter two to suppress log messages during
deferred probing.
The remaining -ENODEV returns for missing device tree node and
slave-addr property are left unchanged as those are permanent
configuration errors unrelated to probe deferral.
Tomasz Unger [Thu, 19 Feb 2026 14:29:42 +0000 (15:29 +0100)]
staging: fbtft: fb_tinylcd: replace udelay() with fsleep()
fsleep() is the preferred modern API for flexible sleeping as it
automatically selects the best sleep mechanism based on the duration.
Replace udelay() with fsleep() to improve power efficiency.
init_display() is a driver initialization callback which runs in
sleeping context, so fsleep() is safe to use here.
However, cvm_oct_rx_shutdown() passes cvm_oct_device (an array of
struct net_device pointers) as the dev_id to free_irq():
free_irq(oct_rx_group[i].irq, cvm_oct_device);
Since __free_irq() matches the action to remove by comparing
dev_id pointers, the mismatched cookie means the IRQ handler is
never found, triggering a WARN and leaving the IRQ line permanently
allocated. This prevents proper driver cleanup on module removal.
Fix the mismatch by passing &oct_rx_group[i].napi as the dev_id
to free_irq(), matching what was used during request_irq().
Haroen Tmimi [Tue, 10 Feb 2026 18:50:44 +0000 (19:50 +0100)]
staging: rtl8723bs: remove redundant 'Adapter' variable in HalPhyRf_8723B
The variable Adapter was declared and initialized locally in
an if-statement, but it shadowed a variable of the same name and
value declared in the function scope (line 169).
Removing the inner declaration allows the code to use the existing
outer variable, resolving a -Wshadow warning.
Yoelvis Oliveros [Tue, 10 Feb 2026 14:48:25 +0000 (14:48 +0000)]
staging: octeon: type change from uint<bits>_t to u<bits>
Runing the ckeckpatch.pl on the staging/octeon driver they where using
uint<8/16/32/64>_T as type declaration and the checkpatch.pl was
putting a [CHECK] flag on those and that they should be change to
u<8/16/32/64>
Siwanan Bungtong [Tue, 10 Feb 2026 03:06:07 +0000 (10:06 +0700)]
staging: rtl8723bs: remove unnecessary void * casts in ioctl_cfg80211.c
Remove redundant (void *) casts when calling memcpy/memset and
other helpers. These casts are unnecessary since C implicitly
converts to void * and they only add noise.
Siwanan Bungtong [Tue, 10 Feb 2026 03:06:06 +0000 (10:06 +0700)]
staging: rtl8723bs: remove unnecessary void * casts in rtl8723b_hal_init.c
Remove redundant (void *) casts when calling memcpy/memset and
other helpers. These casts are unnecessary since C implicitly
converts to void * and they only add noise.
Siwanan Bungtong [Tue, 10 Feb 2026 03:06:05 +0000 (10:06 +0700)]
staging: rtl8723bs: remove unnecessary void * casts in rtw_security.c
Remove redundant (void *) casts when calling memcpy/memset and
other helpers. These casts are unnecessary since C implicitly
converts to void * and they only add noise.
Siwanan Bungtong [Tue, 10 Feb 2026 03:06:04 +0000 (10:06 +0700)]
staging: rtl8723bs: remove unnecessary void * casts in rtw_mlme_ext.c
Remove redundant (void *) casts when calling memcpy/memset and
other helpers. These casts are unnecessary since C implicitly
converts to void * and they only add noise.
Siwanan Bungtong [Tue, 10 Feb 2026 03:06:03 +0000 (10:06 +0700)]
staging: rtl8723bs: remove unnecessary void * casts in rtw_ieee80211.c
Remove redundant (void *) casts when calling memcpy/memset and
other helpers. These casts are unnecessary since C implicitly
converts to void * and they only add noise.
Siwanan Bungtong [Tue, 10 Feb 2026 03:06:02 +0000 (10:06 +0700)]
staging: rtl8723bs: remove unnecessary void * casts in rtw_efuse.c
Remove redundant (void *) casts when calling memcpy/memset and
other helpers. These casts are unnecessary since C implicitly
converts to void * and they only add noise.
Siwanan Bungtong [Tue, 10 Feb 2026 03:06:01 +0000 (10:06 +0700)]
staging: rtl8723bs: remove unnecessary void * casts in rtw_ap.c
Remove redundant (void *) casts when calling memcpy/memset and
other helpers. These casts are unnecessary since C implicitly
converts to void * and they only add noise.
staging: rtl8723bs: replace ternary min comparison with min()
Change type of local variable wpa_ie_len from int to u8.
wpa_ie_len gets its value either from elems->wpa_ie_len or
elems->rsn_ie_len which are both u8, and thus there's no reason
to cast them to int.
This allows rewriting ternary min comparison using the min() function from
linux/minmax.h as now both sides are unsigned.
Rewrite as well wpa_ie_len + 2 to wpa_ie_len + 2u,
to keep the expression unsigned and avoid overflows.
Artem Lytkin [Sat, 7 Feb 2026 22:05:23 +0000 (22:05 +0000)]
staging: fbtft: fix unchecked write return value in fb_agm1264k-fl
The second call to par->fbtftops.write() does not capture the return
value, so the subsequent error check tests a stale value from the
first write call. Add the missing assignment so the error check
applies to the correct write operation.
Artem Lytkin [Sat, 7 Feb 2026 15:37:02 +0000 (15:37 +0000)]
staging: sm750fb: convert logging to device-based in sm750.c
Replace pr_err() calls with dev_err() using info->device to provide
proper device context in log messages. This makes it easier to
identify which device generated the message when multiple framebuffer
devices are present.
Nam Cao [Mon, 16 Feb 2026 00:57:30 +0000 (07:57 +0700)]
staging: fbtft: Optimize partial write()
When user write() only to part of the screen, the driver still updates the
entire screen. That wastes CPU cycles.
Optimize by updating only the changed lines.
Also remove a "special case" in fbtft_mkdirty() as its only user is removed
in this patch.
Tested with an Adafruit ILI9340 (drivers/staging/fbtft/fb_ili9340.c).
Improvement is measured by a pair of trace_printk() at the beginning of
fb_write() and at the end of fbtft_deferred_io().
Update type Before After
====================================
full screen 196ms 200ms
half screen 200ms 124ms
quarter screen 193ms 81ms
one pixel 199ms 43ms
It is interesting to note that if the deferred IO's delay time (40ms) is
subtracted, then the time amount scales linearly with the write size.
Bera Yüzlü [Sun, 8 Feb 2026 10:54:24 +0000 (13:54 +0300)]
staging: rtl8723bs: Refactor setCCKFilterCoefficient to remove duplicated rtw_write8() calls
Previously, the function used 16 individual and repetitive rtw_write8()
calls (8 for each channel condition) to set the filter coefficients.
The new implementation uses a table pointer to select the appropriate
swingtable and iterates through the 8-byte coefficient array using a
single for loop. This achieves the same result without changing logic.
Artem Lytkin [Mon, 16 Feb 2026 20:19:20 +0000 (20:19 +0000)]
staging: most: dim2: check return value of clk_prepare_enable for PLL
The return value of clk_prepare_enable() for the PLL clock is not
checked, while the same call for the MLB clock is properly checked
earlier in the function. If clk_prepare_enable() fails, the driver
continues without the PLL clock enabled, leading to undefined
hardware behavior.
Add the missing error check and disable the MLB clock on failure to
keep the cleanup consistent with the rest of the function.
Zeeshan Ahmad [Tue, 10 Feb 2026 06:51:21 +0000 (11:51 +0500)]
staging: most: dim2: convert pr_err/warn to dev_err/warn
The dim2 driver currently uses generic pr_* logging macros for
reporting hardware errors. Modern hardware drivers should use the
device-specific dev_* logging macros.
This provides better context in the system logs by identifying the
specific hardware instance associated with the error or warning,
which is especially helpful in systems with multiple controllers.
Zeeshan Ahmad [Tue, 10 Feb 2026 06:51:20 +0000 (11:51 +0500)]
staging: most: dim2: move extra info messages to dev_dbg
The dim2 driver is currently too talkative in the system logs.
Informational messages such as node addresses and state changes
are useful for developers but provide unnecessary noise for
regular users during normal operation.
Move these non-critical info messages to the debug level using
dev_dbg(). This ensures a quiet log by default while preserving
the information for debugging purposes.
Linus Torvalds [Sun, 22 Feb 2026 21:09:33 +0000 (13:09 -0800)]
Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library fix from Eric Biggers:
"Fix a big endian specific issue in the PPC64-optimized AES code"
* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
lib/crypto: powerpc/aes: Fix rndkey_from_vsx() on big endian CPUs
Mark Brown [Tue, 17 Feb 2026 13:10:46 +0000 (13:10 +0000)]
CREDITS: Add -next to Stephen Rothwell's entry
Stephen retired and stepped back from -next maintainership, update his
entry in CREDITS to recognise his 18 years of hard work making it what
it is today and all the impact it's had on our development process.
Also update to his current GnuPG key while we're here.
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: SeongJae Park <sj@kernel.org> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Mark Brown <broonie@kernel.org> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann [Tue, 17 Feb 2026 08:26:49 +0000 (08:26 +0000)]
x509: select CONFIG_CRYPTO_LIB_SHA256
The x509 public key code gained a dependency on the sha256 hash
implementation, causing a rare link time failure in randconfig
builds:
arm-linux-gnueabi-ld: crypto/asymmetric_keys/x509_public_key.o: in function `x509_get_sig_params':
x509_public_key.c:(.text.x509_get_sig_params+0x12): undefined reference to `sha256'
arm-linux-gnueabi-ld: (sha256): Unknown destination type (ARM/Thumb) in crypto/asymmetric_keys/x509_public_key.o
x509_public_key.c:(.text.x509_get_sig_params+0x12): dangerous relocation: unsupported relocation
Select the necessary library code from Kconfig.
Fixes: 2c62068ac86b ("x509: Separately calculate sha256 for blacklist") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Eric Biggers <ebiggers@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Haiyue Wang [Sun, 22 Feb 2026 12:11:00 +0000 (20:11 +0800)]
xz: fix arm fdt compile error for kmalloc replacement
Align to the commit bf4afc53b77a ("Convert 'alloc_obj' family to use the
new default GFP_KERNEL argument") update the 'kmalloc_obj' declaration
for userspace to fix below compile error:
In file included from arch/arm/boot/compressed/../../../../lib/decompress_unxz.c:241,
from arch/arm/boot/compressed/decompress.c:56:
arch/arm/boot/compressed/../../../../lib/xz/xz_dec_stream.c: In function 'xz_dec_init':
arch/arm/boot/compressed/../../../../lib/xz/xz_dec_stream.c:787:28: error: implicit declaration of function 'kmalloc_obj'; did you mean 'kmalloc'? [-Wimplicit-function-declaration]
787 | struct xz_dec *s = kmalloc_obj(*s);
| ^~~~~~~~~~~
| kmalloc
Signed-off-by: Haiyue Wang <haiyuewa@163.com> Fixes: 69050f8d6d07 ("treewide: Replace kmalloc with kmalloc_obj for non-scalar types") Fixes: bf4afc53b77a ("Convert 'alloc_obj' family to use the new default GFP_KERNEL argument") Reviewed-by: Kees Cook <kees@kernel.org> Acked-by: Lasse Collin <lasse.collin@tukaani.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 22 Feb 2026 17:43:11 +0000 (09:43 -0800)]
Merge tag 'rtc-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
- loongson: Loongson-2K0300 support
- s35390a: nvmem support
- zynqmp: rework calibration
* tag 'rtc-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
rtc: ds1390: fix number of bytes read from RTC
rtc: class: Remove duplicate check for alarm
rtc: optee: simplify OP-TEE context match
rtc: interface: Alarm race handling should not discard preceding error
rtc: s35390a: implement nvmem support
rtc: loongson: Add Loongson-2K0300 support
dt-bindings: rtc: loongson: Document Loongson-2K0300 compatible
dt-bindings: rtc: loongson: Correct Loongson-1C interrupts property
dt-bindings: rtc: renesas,rz-rtca3: Add RZ/V2N support
dt-bindings: rtc: cpcap: convert to schema
rtc: zynqmp: use dynamic max and min offset ranges
rtc: zynqmp: rework set_offset
rtc: zynqmp: rework read_offset
rtc: zynqmp: check calibration max value
rtc: zynqmp: correct frequency value
rtc: amlogic-a4: Remove IRQF_ONESHOT
rtc: pcf8563: use correct of_node for output clock
rtc: max31335: use correct CONFIG symbol in IS_REACHABLE()
rtc: nvvrs: Add ARCH_TEGRA to the NV VRS RTC driver
Linus Torvalds [Sun, 22 Feb 2026 16:43:31 +0000 (08:43 -0800)]
Merge tag 'rust-fixes-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull rust fixes from Miguel Ojeda:
"Toolchain and infrastructure:
- Pass '-Zunstable-options' flag required by the future Rust 1.95.0
- Fix 'objtool' warning for Rust 1.84.0
'kernel' crate:
- 'irq' module: add missing bound detected by the future Rust 1.95.0
- 'list' module: add missing 'unsafe' blocks and placeholder safety
comments to macros (an issue for future callers within the crate)
'pin-init' crate:
- Clean Clippy warning that changed behavior in the future Rust
1.95.0"
* tag 'rust-fixes-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
rust: list: Add unsafe blocks for container_of and safety comments
rust: pin-init: replace clippy `expect` with `allow`
rust: irq: add `'static` bounds to irq callbacks
objtool/rust: add one more `noreturn` Rust function
rust: kbuild: pass `-Zunstable-options` for Rust 1.95.0
Linus Torvalds [Sun, 22 Feb 2026 16:40:13 +0000 (08:40 -0800)]
Merge tag 'trace-rv-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull runtime verifier fix from Steven Rostedt:
- Fix multiple definition of __pcpu_unique_da_mon_this
After refactoring monitors, we used static per-cpu variables with the
same names across different per-cpu monitors. This is explicitly
disallowed for modules on some architectures (alpha) or if
CONFIG_DEBUG_FORCE_WEAK_PER_CPU is enabled (e.g. Fedora's debug
kernel). Make sure all those variables have different names to avoid
compilation issues.
* tag 'trace-rv-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
rv: Fix multiple definition of __pcpu_unique_da_mon_this
@gfp depends on patch && !(file in "tools") && !(file in "samples")@
identifier ALLOC = {kmalloc_obj,kmalloc_objs,kmalloc_flex,
kzalloc_obj,kzalloc_objs,kzalloc_flex,
kvmalloc_obj,kvmalloc_objs,kvmalloc_flex,
kvzalloc_obj,kvzalloc_objs,kvzalloc_flex};
@@
ALLOC(...
- , GFP_KERNEL
)
$ make coccicheck MODE=patch COCCI=gfp.cocci
Build and boot tested x86_64 with Fedora 42's GCC and Clang:
Linux version 6.19.0+ (user@host) (gcc (GCC) 15.2.1 20260123 (Red Hat 15.2.1-7), GNU ld version 2.44-12.fc42) #1 SMP PREEMPT_DYNAMIC 1970-01-01
Linux version 6.19.0+ (user@host) (clang version 20.1.8 (Fedora 20.1.8-4.fc42), LLD 20.1.8) #1 SMP PREEMPT_DYNAMIC 1970-01-01
Linus Torvalds [Sun, 22 Feb 2026 04:03:00 +0000 (20:03 -0800)]
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
This converts some of the visually simpler cases that have been split
over multiple lines. I only did the ones that are easy to verify the
resulting diff by having just that final GFP_KERNEL argument on the next
line.
Somebody should probably do a proper coccinelle script for this, but for
me the trivial script actually resulted in an assertion failure in the
middle of the script. I probably had made it a bit _too_ trivial.
So after fighting that far a while I decided to just do some of the
syntactically simpler cases with variations of the previous 'sed'
scripts.
The more syntactically complex multi-line cases would mostly really want
whitespace cleanup anyway.
Linus Torvalds [Sun, 22 Feb 2026 01:06:51 +0000 (17:06 -0800)]
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
This is the exact same thing as the 'alloc_obj()' version, only much
smaller because there are a lot fewer users of the *alloc_flex()
interface.
As with alloc_obj() version, this was done entirely with mindless brute
force, using the same script, except using 'flex' in the pattern rather
than 'objs*'.
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Linus Torvalds [Sun, 22 Feb 2026 00:14:11 +0000 (16:14 -0800)]
add default_gfp() helper macro and use it in the new *alloc_obj() helpers
Most simple allocations use GFP_KERNEL, and with the new allocation
helpers being introduced, let's just take advantage of that to simplify
that default case.
shows that about 90% of all those new allocator instances just use that
standard GFP_KERNEL.
Those helpers are already macros, and we can easily just make it be the
default case when the gfp argument is missing.
And yes, we could do that for all the legacy interfaces too, but let's
keep it to just the new ones at least for now, since those all got
converted recently anyway, so this is not any "extra" noise outside of
that limited conversion.
And, in fact, I want to do this before doing the -rc1 release, exactly
so that we don't get extra merge conflicts.
Linus Torvalds [Sat, 21 Feb 2026 23:12:09 +0000 (15:12 -0800)]
slab.h: disable completely broken overflow handling in flex allocations
Commit 69050f8d6d07 ("treewide: Replace kmalloc with kmalloc_obj for
non-scalar types") started using the new allocation helpers, and in the
process showed that they were completely non-working.
The overflow logic in overflows_flex_counter_type() is completely the
wrong way around, and that broke __alloc_flex() completely. By chance,
the resulting code was then such a mess that clang generated
sufficiently garbage code that objtool warned about it all. Which made
it somewhat quicker to narrow things down.
While fixing overflows_flex_counter_type() would presumably fix this
all, I'm excising the whole broken overflow logic from __alloc_flex(),
because we don't want that kind of code in basic allocation functions
anyway.
That (no longer) broken overflows_flex_counter_type() thing needs to be
inserted into the actual __set_flex_counter() logic in the unlikely case
that we ever want this at all. And made conditional.
Linus Torvalds [Sat, 21 Feb 2026 19:02:58 +0000 (11:02 -0800)]
Merge tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull kmalloc_obj conversion from Kees Cook:
"This does the tree-wide conversion to kmalloc_obj() and friends using
coccinelle, with a subsequent small manual cleanup of whitespace
alignment that coccinelle does not handle.
This uncovered a clang bug in __builtin_counted_by_ref(), so the
conversion is preceded by disabling that for current versions of
clang. The imminent clang 22.1 release has the fix.
I've done allmodconfig build tests for x86_64, arm64, i386, and arm. I
did defconfig builds for alpha, m68k, mips, parisc, powerpc, riscv,
s390, sparc, sh, arc, csky, xtensa, hexagon, and openrisc"
* tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
kmalloc_obj: Clean up after treewide replacements
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
compiler_types: Disable __builtin_counted_by_ref for Clang
- Fixes and improvements for ARM's CoreSight support, simplify ARM SPE
event config in 'perf mem', update docs for 'perf c2c' including the
ARM events it can be used with
- Build support for generating metrics from arch specific python
script, add extra AMD, Intel, ARM64 metrics using it
- Add AMD Zen 6 events and metrics
- Add JSON file with OpenHW Risc-V CVA6 hardware counters
- Add 'perf kvm' stats live testing
- Add more 'perf stat' tests to 'perf test'
- Fix segfault in `perf lock contention -b/--use-bpf`
- Fix various 'perf test' cases for s390
- Build system cleanups, bump minimum shellcheck version to 0.7.2
- Support building the capstone based annotation routines as a plugin
- Allow passing extra Clang flags via EXTRA_BPF_FLAGS
* tag 'perf-tools-for-v7.0-1-2026-02-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (255 commits)
perf test script: Add python script testing support
perf test script: Add perl script testing support
perf script: Allow the generated script to be a path
perf test: perf data --to-ctf testing
perf test: Test pipe mode with data conversion --to-json
perf json: Pipe mode --to-ctf support
perf json: Pipe mode --to-json support
perf check: Add libbabeltrace to the listed features
perf build: Allow passing extra Clang flags via EXTRA_BPF_FLAGS
perf test data_type_profiling.sh: Skip just the Rust tests if code_with_type workload is missing
tools build: Fix feature test for rust compiler
perf libunwind: Fix calls to thread__e_machine()
perf stat: Add no-affinity flag
perf evlist: Reduce affinity use and move into iterator, fix no affinity
perf evlist: Missing TPEBS close in evlist__close()
perf evlist: Special map propagation for tool events that read on 1 CPU
perf stat-shadow: In prepare_metric fix guard on reading NULL perf_stat_evsel
Revert "perf tool_pmu: More accurately set the cpus for tool events"
tools build: Emit dependencies file for test-rust.bin
tools build: Make test-rust.bin be removed by the 'clean' target
...
Linus Torvalds [Sat, 21 Feb 2026 18:25:42 +0000 (10:25 -0800)]
Merge tag 'cocci-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux
Pull coccinelle updates from Julia Lawall:
"This simplifies and clarifies the handling of output generated by
Coccinelle that is sent to standard error.
By default, this goes to /dev/null. Remind the user of that and
encourage them to provide another file name (Benjamin Philip)"
* tag 'cocci-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
Documentation: Coccinelle: document debug log handling
scripts: coccicheck: warn on unset debug file
scripts: coccicheck: simplify debug file handling
Linus Torvalds [Sat, 21 Feb 2026 18:20:32 +0000 (10:20 -0800)]
Merge tag 'ntb-7.0' of https://github.com/jonmason/ntb
Pull NTB (PCIe non-transparent bridge) updates from Jon Mason:
"NTB updates include debugfs improvements, correctness fixes, cleanups,
and new hardware support:
ntb_transport QP stats are converted to seq_file, a tx_memcpy_offload
module parameter is introduced with associated ordering fixes, and a
debugfs queue name truncation bug is corrected.
Additional fixes address format specifier mismatches in ntb_tool and
boundary conditions in the Switchtec driver, while unused MSI helpers
are removed and the codebase migrates to dma_map_phys().
Intel Gen6 (Diamond Rapids) NTB support is also added"
* tag 'ntb-7.0' of https://github.com/jonmason/ntb:
NTB: ntb_transport: Use seq_file for QP stats debugfs
NTB: ntb_transport: Fix too small buffer for debugfs_name
ntb/ntb_tool: correct sscanf format for u64 and size_t in tool_peer_mw_trans_write
ntb: intel: Add Intel Gen6 NTB support for DiamondRapids
NTB/msi: Remove unused functions
ntb: ntb_hw_switchtec: Increase MAX_MWS limit to 256
ntb: ntb_hw_switchtec: Fix array-index-out-of-bounds access
ntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut
NTB: epf: allow built-in build
ntb: migrate to dma_map_phys instead of map_page
NTB: ntb_transport: Add 'tx_memcpy_offload' module option
NTB: ntb_transport: Remove unused 'retries' field from ntb_queue_entry
Linus Torvalds [Sat, 21 Feb 2026 18:05:49 +0000 (10:05 -0800)]
Merge tag 'io_uring-20260221' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- A fix for a missing URING_CMD128 opcode check, fixing an issue with
the SQE mixed mode support introduced in 6.19. Merged late due to
having multiple dependencies
- Add sqe->cmd size checking for big SQEs, similar to what we have for
normal sized SQEs
- Fix a race condition in zcrx, that leads to a double free
* tag 'io_uring-20260221' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring: Add size check for sqe->cmd
io_uring: add IORING_OP_URING_CMD128 to opcode checks
io_uring/zcrx: fix user_ref race between scrub and refill paths
Linus Torvalds [Sat, 21 Feb 2026 17:38:59 +0000 (09:38 -0800)]
Merge tag 'sched_ext-for-7.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext fixes from Tejun Heo:
- Various bug fixes for the example schedulers and selftests
* tag 'sched_ext-for-7.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
tools/sched_ext: fix getopt not re-parsed on restart
tools/sched_ext: scx_userland: fix data races on shared counters
tools/sched_ext: scx_pair: fix stride == 0 crash on single-CPU systems
tools/sched_ext: scx_central: fix CPU_SET and skeleton leak on early exit
tools/sched_ext: scx_userland: fix stale data on restart
tools/sched_ext: scx_flatcg: fix potential stack overflow from VLA in fcg_read_stats
selftests/sched_ext: Fix rt_stall flaky failure
tools/sched_ext: scx_userland: fix restart and stats thread lifecycle bugs
tools/sched_ext: scx_central: fix sched_setaffinity() call with the set size
tools/sched_ext: scx_flatcg: zero-initialize stats counter array
Linus Torvalds [Sat, 21 Feb 2026 17:11:32 +0000 (09:11 -0800)]
Merge tag 'v7.0-rc-part2-ksmbd-server-fixes' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
"Two small fixes:
- fix potential deadlock
- minor cleanup"
* tag 'v7.0-rc-part2-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
ksmbd: call ksmbd_vfs_kern_path_end_removing() on some error paths
smb: server: Remove duplicate include of misc.h
The current debug documentation does not mention that logs are printed
to stdout unless DEBUG_FILE is set. It also doesn't mention that
Coccinelle cannot overwrite debug files.
Document this behaviour in the examples and reference it in the
debugging section.
Signed-off-by: Benjamin Philip <benjamin.philip495@gmail.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
Benjamin Philip [Tue, 6 Jan 2026 19:08:35 +0000 (00:38 +0530)]
scripts: coccicheck: warn on unset debug file
coccicheck prints debug logs to stdout unless a debug file has been set.
This makes it hard to read coccinelle's suggested changes, especially
for someone new to coccicheck.
From this commit, we warn about this behaviour from within the script on
an unset debug file. Explicitly setting the debug file to /dev/null
suppresses the warning while keeping the default.
Signed-off-by: Benjamin Philip <benjamin.philip495@gmail.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
Kees Cook [Sat, 21 Feb 2026 07:49:23 +0000 (23:49 -0800)]
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:
Single allocations: kmalloc(sizeof(TYPE), ...)
are replaced with: kmalloc_obj(TYPE, ...)
Kees Cook [Fri, 20 Feb 2026 21:15:58 +0000 (13:15 -0800)]
compiler_types: Disable __builtin_counted_by_ref for Clang
Unfortunately, there is a corner case of __builtin_counted_by_ref()
usage that crashes[1] Clang since support was introduced in Clang 19.
Disable it prior to Clang 22. Found while tested kmalloc_obj treewide
refactoring (via kmalloc_flex() usage).
David Carlier [Wed, 18 Feb 2026 19:22:35 +0000 (19:22 +0000)]
tools/sched_ext: fix getopt not re-parsed on restart
After goto restart, optind retains its advanced position from the
previous getopt loop, causing getopt() to immediately return -1.
This silently drops all command-line options on the restarted skeleton.
Reset optind to 1 at the restart label so options are re-parsed.
David Carlier [Wed, 18 Feb 2026 19:22:23 +0000 (19:22 +0000)]
tools/sched_ext: scx_userland: fix data races on shared counters
The stats thread reads nr_vruntime_enqueues, nr_vruntime_dispatches,
nr_vruntime_failed, and nr_curr_enqueued concurrently with the main
thread writing them, with no synchronization.
Use __atomic builtins with relaxed ordering for all accesses to these
counters to eliminate the data races.
Only display accuracy is affected, not scheduling correctness.
Signed-off-by: David Carlier <devnexen@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Linus Torvalds [Sat, 21 Feb 2026 01:14:36 +0000 (17:14 -0800)]
Merge tag 'spi-fix-v7.0-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"There's a relatively large but ultimately simple fix for spidev here
which addresses some ABBA races by simplifying down to just using a
single lock, it's not clear to me that there was ever any benefit in
having the two separate locks in the first place.
We also have simple missing error check fix in in the wpcm-fiu driver"
* tag 'spi-fix-v7.0-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: spidev: fix lock inversion between spi_lock and buf_lock
spi: wpcm-fiu: Fix potential NULL pointer dereference in wpcm_fiu_probe()
Linus Torvalds [Sat, 21 Feb 2026 01:11:55 +0000 (17:11 -0800)]
Merge tag 'regulator-fix-v7.0-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A few driver specific fixes, plus a patch from Bjorn which removes a
fixed limit on regulator names that was breaking some Qualcomm
systems"
* tag 'regulator-fix-v7.0-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: s2mps11: fix pctrlsel macro usage in s2mpg10_of_parse_cb()
regulator: s2mps11: drop redundant sanity checks in s2mpg10_of_parse_cb()
regulator: core: Remove regulator supply_name length limit
regulator: mt6363: Fix interrmittent timeout
Linus Torvalds [Sat, 21 Feb 2026 00:10:54 +0000 (16:10 -0800)]
Merge tag 'gpio-fixes-for-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- add a missing IS_ERR() check in gpio-nomadik
- fix a NULL-pointer dereference in GPIO character device code
- restore label matching in swnode-lookup due to reported regressions
in existing users (this will get removed again once we audit and
update all drivers)
- fix remove path in GPIO sysfs code
- normalize the return value of gpio_chip::get() in gpio-amd-fch
* tag 'gpio-fixes-for-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: amd-fch: ionly return allowed values from amd_fch_gpio_get()
gpio: sysfs: fix chip removal with GPIOs exported over sysfs
gpio: swnode: restore the swnode-name-against-chip-label matching
gpio: cdev: Avoid NULL dereference in linehandle_create()
gpio: nomadik: Add missing IS_ERR() check
Linus Torvalds [Fri, 20 Feb 2026 23:54:48 +0000 (15:54 -0800)]
Merge tag 'i2c-for-7.0-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull more i2c updates from Wolfram Sang:
"Designware:
- refactor the transfer path to support I2C_M_STOP
- handle pm runtime by using the active auto try macros
- handle controllers lacking explicit START and STOP conditions
- general cleanups
Other i2c drivers:
- qualcomm: add support for qcs8300-cci
- amd8111: general cleanups
- cp2112: add DT bindings"
* tag 'i2c-for-7.0-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
dt-bindings: i2c: Add CP2112 HID USB to SMBus Bridge
i2c: amd8111: switch to devm_ functions
i2c: amd8111: Remove spaces in MODULE_* macros
i2c: designware-platdrv: fix cleanup on probe failure
i2c: designware-platdrv: simplify reset control
dt-bindings: i2c: qcom-cci: Document qcs8300 compatible
i2c: designware: Remove dead code in AMD ISP case
i2c: designware: Support of controller with IC_EMPTYFIFO_HOLD_MASTER disabled
i2c: designware: Use runtime PM macro for auto-cleanup
i2c: designware: Implement I2C_M_STOP support
Linus Torvalds [Fri, 20 Feb 2026 23:47:44 +0000 (15:47 -0800)]
Merge tag 'sound-fix-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are a bunch of updates, but there should be no big surprises;
mostly device-specific quirks and fix-ups or non-code changes:
- Quirks for ASoC AMD, HD-audio and USB-audio
- Fixes in ASoC fsl, rockchip, renesas, aw codecs
- Fixes for USB-audio packet handling in the implicit feedback mode
- Updates of SPDX license IDs in some files"
* tag 'sound-fix-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (28 commits)
ASoC: rockchip: i2s-tdm: Use param rate if not provided by set_sysclk
ALSA: hda/hdmi: Add quirk for TUXEDO IBS14G6
ASoC: dt-bindings: asahi-kasei,ak5558: Fix the supply names
ASoC: dt-bindings: asahi-kasei,ak4458: Fix the supply names
ASoC: dt-bindings: asahi-kasei,ak4458: set unevaluatedProperties:false
ASoC: amd: amd_sdw: add machine driver quirk for Lenovo models
ASoC: amd: acp: Add ACP7.0 match entries for Realtek parts
ALSA: echoaudio: Add SPDX ids to some files
ALSA: isa: Add SPDX id lines to some files
ALSA: core: Add SPDX license id to files
ASoC: tas2783A: add explicit port prepare handling
ASoC: renesas: rz-ssi: Fix playback and capture
ALSA: hda/realtek: Fix headset mic on ASUS Zenbook 14 UX3405MA
ALSA: hda/conexant: Fix headphone jack handling on Acer Swift SF314
ASoC: qcom: sm8250: Add quinary MI2S support
ASoC: amd: yc: Add DMI quirk for ASUS Vivobook Pro 15X M6501RR
ALSA: usb-audio: Avoid potentially repeated XRUN error messages
ALSA: usb-audio: Add sanity check for OOB writes at silencing
ALSA: usb-audio: Optimize the copy of packet sizes for implicit fb handling
ALSA: usb-audio: Update the number of packets properly at receiving
...
Linus Torvalds [Fri, 20 Feb 2026 23:36:38 +0000 (15:36 -0800)]
Merge tag 'drm-next-2026-02-21' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"This is the fixes and cleanups for the end of the merge window, it's
nearly all amdgpu, with some amdkfd, then a pagemap core fix, i915/xe
display fixes, and some xe driver fixes.
Nothing seems out of the ordinary, except amdgpu is a little more
volume than usual.
pagemap:
- drm/pagemap: pass pagemap_addr by reference
amdgpu:
- DML 2.1 fixes
- Panel replay fixes
- Display writeback fixes
- MES 11 old firmware compat fix
- DC CRC improvements
- DPIA fixes
- XGMI fixes
- ASPM fix
- SMU feature bit handling fixes
- DC LUT fixes
- RAS fixes
- Misc memory leak in error path fixes
- SDMA queue reset fixes
- PG handling fixes
- 5 level GPUVM page table fix
- SR-IOV fix
- Queue reset fix
- SMU 13.x fixes
- DC resume lag fix
- MPO fixes
- DCN 3.6 fix
- VSDB fixes
- HWSS clean up
- Replay fixes
- DCE cursor fixes
- DCN 3.5 SR DDR5 latency fixes
- HPD fixes
- Error path unwind fixes
- SMU13/14 mode1 reset fixes
- PSP 15 updates
- SMU 15 updates
- Sync fix in amdgpu_dma_buf_move_notify()
- HAINAN fix
- PSP 13.x fix
- GPUVM locking fix
- Fixes for DC analog support
- DC FAMS fixes
- DML 2.1 fixes
- eDP fixes
- Misc DC fixes
- Fastboot fix
- 3DLUT fixes
- GPUVM fixes
- 64bpp format fix
- Fix for MacBooks with switchable gfx
amdkfd:
- Fix possible double deletion of validate list
- Event setup fix
- Device disconnect regression fix
- APU GTT as VRAM fix
- Fix piority inversion with MQDs
- NULL check fix
radeon:
- HAINAN fix
i915/xe display:
- Regresion fix for HDR 4k displays (#15503)
- Fixup for Dell XPS 13 7390 eDP rate limit
- Memory leak fix on ACPI _DSM handling
- Add missing slice count check during DP mode validation
xe:
- drm/xe: Prevent VFs from exposing the CCS mode sysfs file
- SRIOV related fixes
- PAT cache fix
- MMIO read fix
- W/a fixes
- Adjust type of xe_modparam.force_vram_bar_size
- Wedge mode fix
- HWMon fix
* tag 'drm-next-2026-02-21' of https://gitlab.freedesktop.org/drm/kernel: (143 commits)
drm/amd/display: Remove unneeded DAC link encoder register
drm/amd/display: Enable DAC in DCE link encoder
drm/amd/display: Set CRTC source for DAC using registers
drm/amd/display: Initialize DAC in DCE link encoder using VBIOS
drm/amd/display: Turn off DAC in DCE link encoder using VBIOS
drm/amd/display: Don't call find_analog_engine() twice
drm/amdgpu: fix 4-level paging if GMC supports 57-bit VA v2
drm/amdgpu: keep vga memory on MacBooks with switchable graphics
drm/amdgpu: Set atomics to true for xgmi
drm/amdkfd: Check for NULL return values
drm/amd/display: Use same max plane scaling limits for all 64 bpp formats
drm/amdgpu: Set vmid0 PAGE_TABLE_DEPTH for GFX12.1
drm/amdkfd: Disable MQD queue priority
drm/amd/display: Remove conditional for shaper 3DLUT power-on
drm/amd/display: Check return of shaper curve to HW format
drm/amd/display: Correct logic check error for fastboot
drm/amd/display: Skip eDP detection when no sink
Revert "drm/amd/display: Add Gfx Base Case For Linear Tiling Handling"
Revert "drm/amd/display: Correct hubp GfxVersion verification"
Revert "drm/amd/display: Add Handling for gfxversion DcGfxBase"
...
Linus Torvalds [Fri, 20 Feb 2026 23:24:21 +0000 (15:24 -0800)]
Merge tag 'fbdev-for-7.0-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull more fbdev updates from Helge Deller:
"Code cleanups for the au1100fb fbdev driver (Uwe Kleine-König)"
* tag 'fbdev-for-7.0-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbdev: au1100fb: Replace license boilerplate by SPDX header
fbdev: au1100fb: Fold au1100fb.h into its only user
fbdev: au1100fb: Replace custom printk wrappers by pr_*
fbdev: au1100fb: Make driver compilable on non-mips platforms
fbdev: au1100fb: Use proper conversion specifiers in printk formats
fbdev: au1100fb: Mark several local functions as static
fbdev: au1100fb: Don't store device specific data in global variables
Linus Torvalds [Fri, 20 Feb 2026 23:05:26 +0000 (15:05 -0800)]
Merge tag 'trace-v7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix possible dereference of uninitialized pointer
When validating the persistent ring buffer on boot up, if the first
validation fails, a reference to "head_page" is performed in the
error path, but it skips over the initialization of that variable.
Move the initialization before the first validation check.
- Fix use of event length in validation of persistent ring buffer
On boot up, the persistent ring buffer is checked to see if it is
valid by several methods. One being to walk all the events in the
memory location to make sure they are all valid. The length of the
event is used to move to the next event. This length is determined by
the data in the buffer. If that length is corrupted, it could
possibly make the next event to check located at a bad memory
location.
Validate the length field of the event when doing the event walk.
- Fix function graph on archs that do not support use of ftrace_ops
When an architecture defines HAVE_DYNAMIC_FTRACE_WITH_ARGS, it means
that its function graph tracer uses the ftrace_ops of the function
tracer to call its callbacks. This allows a single registered
callback to be called directly instead of checking the callback's
meta data's hash entries against the function being traced.
For architectures that do not support this feature, it must always
call the loop function that tests each registered callback (even if
there's only one). The loop function tests each callback's meta data
against its hash of functions and will call its callback if the
function being traced is in its hash map.
The issue was that there was no check against this and the direct
function was being called even if the architecture didn't support it.
This meant that if function tracing was enabled at the same time as a
callback was registered with the function graph tracer, its callback
would be called for every function that the function tracer also
traced, even if the callback's meta data only wanted to be called
back for a small subset of functions.
Prevent the direct calling for those architectures that do not
support it.
- Fix references to trace_event_file for hist files
The hist files used event_file_data() to get a reference to the
associated trace_event_file the histogram was attached to. This would
return a pointer even if the trace_event_file is about to be freed
(via RCU). Instead it should use the event_file_file() helper that
returns NULL if the trace_event_file is marked to be freed so that no
new references are added to it.
- Wake up hist poll readers when an event is being freed
When polling on a hist file, the task is only awoken when a hist
trigger is triggered. This means that if an event is being freed
while there's a task waiting on its hist file, it will need to wait
until the hist trigger occurs to wake it up and allow the freeing to
happen. Note, the event will not be completely freed until all
references are removed, and a hist poller keeps a reference. But it
should still be woken when the event is being freed.
* tag 'trace-v7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Wake up poll waiters for hist files when removing an event
tracing: Fix checking of freed trace_event_file for hist files
fgraph: Do not call handlers direct when not using ftrace_ops
tracing: ring-buffer: Fix to check event length before using
ring-buffer: Fix possible dereference of uninitialized pointer
Linus Torvalds [Fri, 20 Feb 2026 22:57:09 +0000 (14:57 -0800)]
Merge tag 'for-7.0-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- multiple error handling fixes of unexpected conditions
- reset block group size class once it becomes empty so that
its class can be changed
- error message level adjustments
- fixes of returned error values
- use correct block reserve for delayed refs
* tag 'for-7.0-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix invalid leaf access in btrfs_quota_enable() if ref key not found
btrfs: fix lost error return in btrfs_find_orphan_roots()
btrfs: fix lost return value on error in finish_verity()
btrfs: change unaligned root messages to error level in btrfs_validate_super()
btrfs: use the correct type to initialize block reserve for delayed refs
btrfs: do not ASSERT() when the fs flips RO inside btrfs_repair_io_failure()
btrfs: reset block group size class when it becomes empty
btrfs: replace BUG() with error handling in __btrfs_balance()
btrfs: handle unexpected exact match in btrfs_set_inode_index_count()
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