OpenWRT users reported regression on ARMv6 devices after updating to latest
HEAD, where tcpdump filter:
tcpdump "not ether host 3c37121a2b3c and not ether host 184ecbca2a3a \
and not ether host 14130b4d3f47 and not ether host f0f61cf440b7 \
and not ether host a84b4dedf471 and not ether host d022be17e1d7 \
and not ether host 5c497967208b and not ether host 706655784d5b"
fails with warning: "Kernel filter failed: No error information"
when using config:
# CONFIG_BPF_JIT_ALWAYS_ON is not set
CONFIG_BPF_JIT_DEFAULT_ON=y
The issue arises because commits:
1. "bpf: Fix array bounds error with may_goto" changed default runtime to
__bpf_prog_ret0_warn when jit_requested = 1
2. "bpf: Avoid __bpf_prog_ret0_warn when jit fails" returns error when
jit_requested = 1 but jit fails
This change restores interpreter fallback capability for BPF programs with
stack size <= 512 bytes when jit fails.
Reported-by: Felix Fietkau <nbd@nbd.name>
Closes: https://lore.kernel.org/bpf/2e267b4b-0540-45d8-9310-e127bf95fc63@nbd.name/
Fixes: 6ebc5030e0 ("bpf: Fix array bounds error with may_goto")
Signed-off-by: KaFai Wan <kafai.wan@linux.dev>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20250909144614.2991253-1-kafai.wan@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Currently, out of all 3 types of waiters in the rqspinlock slow path
(i.e., pending bit waiter, wait queue head waiter, and wait queue
non-head waiter), only the pending bit waiter and wait queue head
waiters apply deadlock checks and a timeout on their waiting loop. The
assumption here was that the wait queue head's forward progress would be
sufficient to identify cases where the lock owner or pending bit waiter
is stuck, and non-head waiters relying on the head waiter would prove to
be sufficient for their own forward progress.
However, the head waiter itself can be preempted by a non-head waiter
for the same lock (AA) or a different lock (ABBA) in a manner that
impedes its forward progress. In such a case, non-head waiters not
performing deadlock and timeout checks becomes insufficient, and the
system can enter a state of lockup.
This is typically not a concern with non-NMI lock acquisitions, as lock
holders which in run in different contexts (IRQ, non-IRQ) use "irqsave"
variants of the lock APIs, which naturally excludes such lock holders
from preempting one another on the same CPU.
It might seem likely that a similar case may occur for rqspinlock when
programs are attached to contention tracepoints (begin, end), however,
these tracepoints either precede the enqueue into the wait queue, or
succeed it, therefore cannot be used to preempt a head waiter's waiting
loop.
We must still be careful against nested kprobe and fentry programs that
may attach to the middle of the head's waiting loop to stall forward
progress and invoke another rqspinlock acquisition that proceeds as a
non-head waiter. To this end, drop CC_FLAGS_FTRACE from the rqspinlock.o
object file.
For now, this issue is resolved by falling back to a repeated trylock on
the lock word from NMI context, while performing the deadlock checks to
break out early in case forward progress is impossible, and use the
timeout as a final fallback.
A more involved fix to terminate the queue when such a condition occurs
will be made as a follow up. A selftest to stress this aspect of nested
NMI/non-NMI locking attempts will be added in a subsequent patch to the
bpf-next tree when this fix lands and trees are synchronized.
Reported-by: Josef Bacik <josef@toxicpanda.com>
Fixes: 164c246571 ("rqspinlock: Protect waiters in queue from stalls")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250909184959.3509085-1-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Eryk reported an issue that I have put under Closes: tag, related to
umem addrs being prematurely produced onto pool's completion queue.
Let us make the skb's destructor responsible for producing all addrs
that given skb used.
Commit from fixes tag introduced the buggy behavior, it was not broken
from day 1, but rather when xsk multi-buffer got introduced.
In order to mitigate performance impact as much as possible, mimic the
linear and frag parts within skb by storing the first address from XSK
descriptor at sk_buff::destructor_arg. For fragments, store them at ::cb
via list. The nodes that will go onto list will be allocated via
kmem_cache. xsk_destruct_skb() will consume address stored at
::destructor_arg and optionally go through list from ::cb, if count of
descriptors associated with this particular skb is bigger than 1.
Previous approach where whole array for storing UMEM addresses from XSK
descriptors was pre-allocated during first fragment processing yielded
too big performance regression for 64b traffic. In current approach
impact is much reduced on my tests and for jumbo frames I observed
traffic being slower by at most 9%.
Magnus suggested to have this way of processing special cased for
XDP_SHARED_UMEM, so we would identify this during bind and set different
hooks for 'backpressure mechanism' on CQ and for skb destructor, but
given that results looked promising on my side I decided to have a
single data path for XSK generic Tx. I suppose other auxiliary stuff
would have to land as well in order to make it work.
Fixes: b7f72a30e9 ("xsk: introduce wrappers and helpers for supporting multi-buffer in Tx path")
Reported-by: Eryk Kubanski <e.kubanski@partner.samsung.com>
Closes: https://lore.kernel.org/netdev/20250530103456.53564-1-e.kubanski@partner.samsung.com/
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: Jason Xing <kerneljasonxing@gmail.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Link: https://lore.kernel.org/r/20250904194907.2342177-1-maciej.fijalkowski@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Rong Tao says:
====================
Fix bpf_strnstr() wrong 'len' parameter, bpf_strnstr("open", "open", 4)
should return 0 instead of -ENOENT. And fix a more general case when s2
is a suffix of the first len characters of s1.
====================
Link: https://patch.msgid.link/tencent_E72A37AF03A3B18853066E421B5969976208@qq.com
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Ilya Leoshkevich says:
====================
selftests/bpf: Fix "expression result unused" warnings with icecc
v3: https://lore.kernel.org/bpf/20250827194929.416969-1-iii@linux.ibm.com/
v3 -> v4: Go back to the original solution (Yonghong, Alexei).
v2: https://lore.kernel.org/bpf/20250827130519.411700-1-iii@linux.ibm.com/
v2 -> v3: Do not touch libbpf, explain how having two function
declarations works (Andrii).
Fix bpf-gcc build (CI).
v1: https://lore.kernel.org/bpf/20250508113804.304665-1-iii@linux.ibm.com/
v1 -> v2: Annotate bpf_obj_new_impl() with __must_check (Alexei).
Add an explanation about icecc.
I took another look at the "expression result unused" warnings I've
been seeing, and it turned out that the root cause was the icecc
compiler wrapper and what I consider a clang bug. Back then I've
reported that the problem was reproducible with plain clang, but now
I see that it was clearly a mixup, sorry about that.
The solution is to add a few awkward (void) casts. I've added a
detailed explanation of why they are helpful to the commit message.
====================
Link: https://patch.msgid.link/20250829030017.102615-1-iii@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
icecc is a compiler wrapper that distributes compile jobs over a build
farm [1]. It works by sending toolchain binaries and preprocessed
source code to remote machines.
Unfortunately using it with BPF selftests causes build failures due to
a clang bug [2]. The problem is that clang suppresses the
-Wunused-value warning if the unused expression comes from a macro
expansion. Since icecc compiles preprocessed source code, this
information is not available. This leads to -Wunused-value false
positives.
obj_new_no_struct() and obj_new_acq() use the bpf_obj_new() macro and
discard the result. arena_spin_lock_slowpath() uses two macros that
produce values and ignores the results. Add (void) casts to explicitly
indicate that this is intentional and suppress the warning.
An alternative solution is to change the macros to not produce values.
This would work today for the arena_spin_lock_slowpath() issue, but in
the future there may appear users who need them. Another potential
solution is to replace these macros with functions. Unfortunately this
would not work, because these macros work with unknown types and
control flow.
[1] https://github.com/icecc/icecream
[2] https://github.com/llvm/llvm-project/issues/142614
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20250829030017.102615-2-iii@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
bpf_strnstr() should not treat the ending '\0' of s2 as a matching character
if the parameter 'len' equal to s2 string length, for example:
1. bpf_strnstr("openat", "open", 4) = -ENOENT
2. bpf_strnstr("openat", "open", 5) = 0
This patch makes (1) return 0, fix just the `len == strlen(s2)` case.
And fix a more general case when s2 is a suffix of the first len
characters of s1.
Fixes: e91370550f ("bpf: Add kfuncs for read-only string operations")
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/tencent_17DC57B9D16BC443837021BEACE84B7C1507@qq.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Small cleanup and test extension to probe the bpf_crypto_{encrypt,decrypt}()
kfunc when a bad dst buffer is passed in to assert that an error is returned.
Also, encrypt_sanity() and skb_crypto_setup() were explicit to set the global
status variable to zero before any test, so do the same for decrypt_sanity().
Do not explicitly zero the on-stack err before bpf_crypto_ctx_create() given
the kfunc is expected to do it internally for the success case.
Before kernel fix:
# ./vmtest.sh -- ./test_progs -t crypto
[...]
[ 1.531200] bpf_testmod: loading out-of-tree module taints kernel.
[ 1.533388] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel
#87/1 crypto_basic/crypto_release:OK
#87/2 crypto_basic/crypto_acquire:OK
#87 crypto_basic:OK
test_crypto_sanity:PASS:skel open 0 nsec
test_crypto_sanity:PASS:ip netns add crypto_sanity_ns 0 nsec
test_crypto_sanity:PASS:ip -net crypto_sanity_ns -6 addr add face::1/128 dev lo nodad 0 nsec
test_crypto_sanity:PASS:ip -net crypto_sanity_ns link set dev lo up 0 nsec
test_crypto_sanity:PASS:open_netns 0 nsec
test_crypto_sanity:PASS:AF_ALG init fail 0 nsec
test_crypto_sanity:PASS:if_nametoindex lo 0 nsec
test_crypto_sanity:PASS:skb_crypto_setup fd 0 nsec
test_crypto_sanity:PASS:skb_crypto_setup 0 nsec
test_crypto_sanity:PASS:skb_crypto_setup retval 0 nsec
test_crypto_sanity:PASS:skb_crypto_setup status 0 nsec
test_crypto_sanity:PASS:create qdisc hook 0 nsec
test_crypto_sanity:PASS:make_sockaddr 0 nsec
test_crypto_sanity:PASS:attach encrypt filter 0 nsec
test_crypto_sanity:PASS:encrypt socket 0 nsec
test_crypto_sanity:PASS:encrypt send 0 nsec
test_crypto_sanity:FAIL:encrypt status unexpected error: -5 (errno 95)
#88 crypto_sanity:FAIL
Summary: 1/2 PASSED, 0 SKIPPED, 1 FAILED
After kernel fix:
# ./vmtest.sh -- ./test_progs -t crypto
[...]
[ 1.540963] bpf_testmod: loading out-of-tree module taints kernel.
[ 1.542404] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel
#87/1 crypto_basic/crypto_release:OK
#87/2 crypto_basic/crypto_acquire:OK
#87 crypto_basic:OK
#88 crypto_sanity:OK
Summary: 2/2 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://lore.kernel.org/r/20250829143657.318524-2-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Stanislav reported that in bpf_crypto_crypt() the destination dynptr's
size is not validated to be at least as large as the source dynptr's
size before calling into the crypto backend with 'len = src_len'. This
can result in an OOB write when the destination is smaller than the
source.
Concretely, in mentioned function, psrc and pdst are both linear
buffers fetched from each dynptr:
psrc = __bpf_dynptr_data(src, src_len);
[...]
pdst = __bpf_dynptr_data_rw(dst, dst_len);
[...]
err = decrypt ?
ctx->type->decrypt(ctx->tfm, psrc, pdst, src_len, piv) :
ctx->type->encrypt(ctx->tfm, psrc, pdst, src_len, piv);
The crypto backend expects pdst to be large enough with a src_len length
that can be written. Add an additional src_len > dst_len check and bail
out if it's the case. Note that these kfuncs are accessible under root
privileges only.
Fixes: 3e1c6f3540 ("bpf: make common crypto API for TC/XDP programs")
Reported-by: Stanislav Fort <disclosure@aisle.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://lore.kernel.org/r/20250829143657.318524-1-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
When running an XDP bpf_prog on the remote CPU in cpumap code
then we must disable the direct return optimization that
xdp_return can perform for mem_type page_pool. This optimization
assumes code is still executing under RX-NAPI of the original
receiving CPU, which isn't true on this remote CPU.
The cpumap code already disabled this via helpers
xdp_set_return_frame_no_direct() and xdp_clear_return_frame_no_direct(),
but the scope didn't include xdp_do_flush().
When doing XDP_REDIRECT towards e.g devmap this causes the
function bq_xmit_all() to run with direct return optimization
enabled. This can lead to hard to find bugs. The issue
only happens when bq_xmit_all() cannot ndo_xdp_xmit all
frames and them frees them via xdp_return_frame_rx_napi().
Fix by expanding scope to include xdp_do_flush(). This was found
by Dragos Tatulea.
Fixes: 11941f8a85 ("bpf: cpumap: Implement generic cpumap")
Reported-by: Dragos Tatulea <dtatulea@nvidia.com>
Reported-by: Chris Arges <carges@cloudflare.com>
Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Chris Arges <carges@cloudflare.com>
Link: https://patch.msgid.link/175519587755.3008742.1088294435150406835.stgit@firesoul
Probe and display L3 Cache topology
Add ability to average an added counter
(useful for pre-integrated "counters", such as Watts)
Break the limit of 64 built-in counters.
Assorted bug fixes and minor feature tweaks
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Merge tag 'turbostat-2025.09.09' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat updates from Len Brown:
"tools/power turbostat: version 2025.09.09
- Probe and display L3 Cache topology
- Add ability to average an added counter (useful for pre-integrated
"counters", such as Watts)
- Break the limit of 64 built-in counters
- Assorted bug fixes and minor feature tweaks"
* tag 'turbostat-2025.09.09' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
tools/power turbostat: version 2025.09.09
tools/power turbostat: Handle non-root legacy-uncore sysfs permissions
tools/power turbostat: standardize PER_THREAD_PARAMS
tools/power turbostat: Fix DMR support
tools/power turbostat: add format "average" for external attributes
tools/power turbostat: delete GET_PKG()
tools/power turbostat: probe and display L3 cache topology
tools/power turbostat: Support more than 64 built-in-counters
tools/power turbostat.8: Document Totl%C0, Any%C0, GFX%C0, CPUGFX% columns
tools/power turbostat: Fix bogus SysWatt for forked program
tools/power turbostat: Handle cap_get_proc() ENOSYS
tools/power turbostat: Fix build with musl
tools/power turbostat: verify arguments to params --show and --hide
tools/power turbostat: regression fix: --show C1E%
- Remove yet another compile-test case for a driver which needs an
additional dependency
- Fix a lock inversion scenario in the IRQ unit test suite
- Remove an impossible flag situation in gic-v5
- Do not iounmap resources in gic-v5 which are managed by devm
- Make sure stale, left-over interrupts in mvebu-gicp are cleared on
driver init
- Fix a reference counting mishap in msi-lib
- Fix a dereference-before-null-ptr-check case in the riscv-imsic
irqchip driver
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Merge tag 'irq_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:
- Fix a wrong ioremap size in mvebu-gicp
- Remove yet another compile-test case for a driver which needs an
additional dependency
- Fix a lock inversion scenario in the IRQ unit test suite
- Remove an impossible flag situation in gic-v5
- Do not iounmap resources in gic-v5 which are managed by devm
- Make sure stale, left-over interrupts in mvebu-gicp are cleared on
driver init
- Fix a reference counting mishap in msi-lib
- Fix a dereference-before-null-ptr-check case in the riscv-imsic
irqchip driver
* tag 'irq_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/mvebu-gicp: Use resource_size() for ioremap()
irqchip: Build IMX_MU_MSI only on ARM
genirq/test: Resolve irq lock inversion warnings
irqchip/gic-v5: Remove IRQD_RESEND_WHEN_IN_PROGRESS for ITS IRQs
irqchip/gic-v5: iwb: Fix iounmap probe failure path
irqchip/mvebu-gicp: Clear pending interrupts on init
irqchip/msi-lib: Fix fwnode refcount in msi_lib_irq_domain_select()
irqchip/riscv-imsic: Don't dereference before NULL pointer check
- Add new Intel CPU models *and* a family: 0x12. Finally. Yippie! :-)
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Merge tag 'x86_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Fix an interrupt vector setup race which leads to a non-functioning
device
- Add new Intel CPU models *and* a family: 0x12. Finally. Yippie! :-)
* tag 'x86_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/irq: Plug vector setup race
x86/cpu: Add new Intel CPU model numbers for Wildcatlake and Novalake
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Merge tag 'locking_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Borislav Petkov:
- Prevent a futex hash leak due to different mm lifetimes
* tag 'locking_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Move futex cleanup to __mmdrop()
Probe and display L3 Cache topology
Add ability to average an added counter
(useful for pre-integrated "counters", such as Watts)
Break the limit of 64 built-in counters.
Assorted bug fixes and minor feature tweaks
Signed-off-by: Len Brown <len.brown@intel.com>
/sys/devices/system/cpu/intel_uncore_frequency/package_X_die_Y/
may be readable by all, but
/sys/devices/system/cpu/intel_uncore_frequency/package_X_die_Y/current_freq_khz
may be readable only by root.
Non-root turbostat users see complaints in this scenario.
Fail probe of the interface if we can't read current_freq_khz.
Reported-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Original-patch-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Together with the RAPL MSRs, there are more MSRs gone on DMR, including
PLR (Perf Limit Reasons), and IRTL (Package cstate Interrupt Response
Time Limit) MSRs. The configurable TDP info should also be retrieved
from TPMI based Intel Speed Select Technology feature.
Remove the access of these MSRs for DMR. Improve the DMR platform
feature table to make it more readable at the same time.
Fixes: 83075bd59d ("tools/power turbostat: Add initial support for DMR")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
External atributes with format "raw" are not printed in summary lines
for nodes/packages (or with option -S). The new format "average"
behaves like "raw" but also adds the summary data
Signed-off-by: Michael Hebenstreit <michael.hebenstreit@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
We have out-grown the ability to use a 64-bit memory location
to inventory every possible built-in counter.
Leverage the the CPU_SET(3) macros to break this barrier.
Also, break the Joules & Watts counters into two,
since we can no longer 'or' them together...
Signed-off-by: Len Brown <len.brown@intel.com>
Here is a single revert of one of the previous patches that went in the
last tty/serial merge that is breaking userspace on some platforms
(specifically powerpc, probably a few others.) It accidentially changed
the ioctl values of some tty ioctls, which breaks xorg.
The revert has been in linux-next all this week with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull TTY fix from Greg KH:
"Here is a single revert of one of the previous patches that went in
the last tty/serial merge that is breaking userspace on some platforms
(specifically powerpc, probably a few others.)
It accidentially changed the ioctl values of some tty ioctls, which
breaks xorg.
The revert has been in linux-next all this week with no reported
issues"
* tag 'tty-6.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "tty: vt: use _IO() to define ioctl numbers"
- Expose the OVMF firmware debug log via sysfs
- Lower the default log level for the EFI stub to avoid corrupting any
splash screens with unimportant diagnostic output
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Merge tag 'efi-next-for-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI updates from Ard Biesheuvel:
- Expose the OVMF firmware debug log via sysfs
- Lower the default log level for the EFI stub to avoid corrupting any
splash screens with unimportant diagnostic output
* tag 'efi-next-for-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi: add API doc entry for ovmf_debug_log
efistub: Lower default log level
efi: add ovmf debug log driver
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Merge tag 'block-6.17-20250808' of git://git.kernel.dk/linux
Pull more block updates from Jens Axboe:
- MD pull request via Yu:
- mddev null-ptr-dereference fix, by Erkun
- md-cluster fail to remove the faulty disk regression fix, by
Heming
- minor cleanup, by Li Nan and Jinchao
- mdadm lifetime regression fix reported by syzkaller, by Yu Kuai
- MD pull request via Christoph
- add support for getting the FDP featuee in fabrics passthru path
(Nitesh Shetty)
- add capability to connect to an administrative controller
(Kamaljit Singh)
- fix a leak on sgl setup error (Keith Busch)
- initialize discovery subsys after debugfs is initialized
(Mohamed Khalfella)
- fix various comment typos (Bjorn Helgaas)
- remove unneeded semicolons (Jiapeng Chong)
- nvmet debugfs ordering issue fix
- Fix UAF in the tag_set in zloop
- Ensure sbitmap shallow depth covers entire set
- Reduce lock roundtrips in io context lookup
- Move scheduler tags alloc/free out of elevator and freeze lock, to
fix some lockdep found issues
- Improve robustness of queue limits checking
- Fix a regression with IO priorities, if no io context exists
* tag 'block-6.17-20250808' of git://git.kernel.dk/linux: (26 commits)
lib/sbitmap: make sbitmap_get_shallow() internal
lib/sbitmap: convert shallow_depth from one word to the whole sbitmap
nvmet: exit debugfs after discovery subsystem exits
block, bfq: Reorder struct bfq_iocq_bfqq_data
md: make rdev_addable usable for rcu mode
md/raid1: remove struct pool_info and related code
md/raid1: change r1conf->r1bio_pool to a pointer type
block: ensure discard_granularity is zero when discard is not supported
zloop: fix KASAN use-after-free of tag set
block: Fix default IO priority if there is no IO context
nvme: fix various comment typos
nvme-auth: remove unneeded semicolon
nvme-pci: fix leak on sgl setup error
nvmet: initialize discovery subsys after debugfs is initialized
nvme: add capability to connect to an administrative controller
nvmet: add support for FDP in fabrics passthru path
md: rename recovery_cp to resync_offset
md/md-cluster: handle REMOVE message earlier
md: fix create on open mddev lifetime regression
block: fix potential deadlock while running nr_hw_queue update
...
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Merge tag 'io_uring-6.17-20250808' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
- Allow vectorized payloads for send/send-zc - like sendmsg, but
without the hassle of a msghdr.
- Fix for an integer wrap that should go to stable, spotted by syzbot.
Nothing alarming here, as you need to be root to hit this.
Nevertheless, it should get fixed.
FWIW, kudos to the syzbot crew for having much nicer reproducers now,
and with nicely annotated source code as well. This is particularly
useful as syzbot uses the raw interface rather than liburing,
historically it's been difficult to turn a syzbot reproducer into a
meaningful test case. With the recent changes, not true anymore!
* tag 'io_uring-6.17-20250808' of git://git.kernel.dk/linux:
io_uring/memmap: cast nr_pages to size_t before shifting
io_uring/net: Allow to do vectorized send
There's one fix here for an issue with the CS42L43 where we were
allocating a single property for client devices as just that property
rather than a terminated array of properties like we are supposed to.
We also have an update to the MAINTAINERS file for some Renesas devices.
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Merge tag 'spi-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"There's one fix here for an issue with the CS42L43 where we were
allocating a single property for client devices as just that property
rather than a terminated array of properties like we are supposed to.
We also have an update to the MAINTAINERS file for some Renesas
devices"
* tag 'spi-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: cs42l43: Property entry should be a null-terminated array
MAINTAINERS: Add entries for the RZ/V2H(P) RSPI
This fixes an issue with the newly added code for handling large voltage
changes on regulators which require that individual voltage changes
cover a limited range, the check for convergence was broken.
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Merge tag 'regulator-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"This fixes an issue with the newly added code for handling large
voltage changes on regulators which require that individual voltage
changes cover a limited range, the check for convergence was broken"
* tag 'regulator-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: core: correct convergence check in regulator_set_voltage()
These patches fix a lockdep issue Russell King reported with nested
regmap-irqs (unusual since regmap is generally for devices on slow buses
so devices don't get nested), plus add a missing mutex free which I
noticed while implementing a fix for that issue.
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Merge tag 'regmap-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"These patches fix a lockdep issue Russell King reported with nested
regmap-irqs (unusual since regmap is generally for devices on slow
buses so devices don't get nested), plus add a missing mutex free
which I noticed while implementing a fix for that issue"
* tag 'regmap-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: irq: Avoid lockdep warnings with nested regmap-irq chips
regmap: irq: Free the regmap-irq mutex
- remove unused, legacy GPIO line value setters from struct gpio_chip
- rename the new set callbacks back to the original names treewide
- fix interrupt handling in gpio-mlxbf2
- revert a buggy immutable irqchip conversion
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Merge tag 'gpio-updates-for-v6.17-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"As discussed: there's a small commit that removes the legacy GPIO line
value setter callbacks as they're no longer used and a big, treewide
commit that renames the new ones to the old names across all GPIO
drivers at once.
While at it: there are also two fixes that I picked up over the course
of the merge window:
- remove unused, legacy GPIO line value setters from struct gpio_chip
- rename the new set callbacks back to the original names treewide
- fix interrupt handling in gpio-mlxbf2
- revert a buggy immutable irqchip conversion"
* tag 'gpio-updates-for-v6.17-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
treewide: rename GPIO set callbacks back to their original names
gpio: remove legacy GPIO line value setter callbacks
gpio: mlxbf2: use platform_get_irq_optional()
Revert "gpio: pxa: Make irq_chip immutable"
A few more small fixes for 6.17-rc1.
- Support for ASoC AMD ACP 7.2 with new IDs
- ASoC Intel AVS and SOF fixes
- Yet more kconfig adjustments for HD-audio codecs
- TAS2781 codec fixes
- Fixes for longstanding (rather minor) bugs in Intel LPE audio
and USB-audio drivers
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Merge tag 'sound-fix-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
- Support for ASoC AMD ACP 7.2 with new IDs
- ASoC Intel AVS and SOF fixes
- Yet more kconfig adjustments for HD-audio codecs
- TAS2781 codec fixes
- Fixes for longstanding (rather minor) bugs in Intel LPE audio and
USB-audio drivers
* tag 'sound-fix-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/cirrus: Restrict prompt only for CONFIG_EXPERT
ALSA: hda/hdmi: Restrict prompt only for CONFIG_EXPERT
ALSA: hda/realtek: Restrict prompt only for CONFIG_EXPERT
ALSA: hda/ca0132: Fix missing error handling in ca0132_alt_select_out()
ASoC: SOF: Intel: hda-sdw-bpt: fix SND_SOF_SOF_HDA_SDW_BPT dependencies
ALSA: hda/tas2781: Support L"SmartAmpCalibrationData" to save calibrated data
ALSA: intel_hdmi: Fix off-by-one error in __hdmi_lpe_audio_probe()
ALSA: hda/realtek: add LG gram 16Z90R-A to alc269 fixup table
ALSA: usb-audio: Don't use printk_ratelimit for debug prints
ASoC: Intel: sof_sdw: Add quirk for Alienware Area 51 (2025) 0CCC SKU
ASoC: tas2781: Fix the wrong step for TLV on tas2781
ASoC: amd: acp: Add SoundWire SOF machine driver support for acp7.2 platform
ASoC: amd: acp: Add SoundWire legacy machine driver support for acp7.2 platform
ASoC: amd: ps: Add SoundWire pci and dma driver support for acp7.2 platform
ASoC: SOF: amd: Add sof audio support for acp7.2 platform
ASoC: Intel: avs: Fix uninitialized pointer error in probe()
ASoC: wm8962: Clear master mode when enter runtime suspend
ASoC: SOF: amd: acp-loader: Use GFP_KERNEL for DMA allocations in resume context
These are a few patches to fix up bits that went missing during the
merge window: The tegra and s3c patches address trivial regressions
from conflicts, the bcm7445 makes the dt conform to the binding that
was made stricter.
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Merge tag 'soc-fixes-6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
"These are a few patches to fix up bits that went missing during the
merge window: The tegra and s3c patches address trivial regressions
from conflicts, the bcm7445 makes the dt conform to the binding that
was made stricter"
* tag 'soc-fixes-6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
arm64: tegra: Remove numa-node-id properties
ARM: s3c/gpio: complete the conversion to new GPIO value setters
ARM: dts: broadcom: Fix bcm7445 memory controller compatible
- replace __ASSEMBLY__ with __ASSEMBLER__ in arch headers
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Merge tag 'xtensa-20250808' of https://github.com/jcmvbkbc/linux-xtensa
Pull xtensa update from Max Filippov:
- replace __ASSEMBLY__ with __ASSEMBLER__ in arch headers
* tag 'xtensa-20250808' of https://github.com/jcmvbkbc/linux-xtensa:
xtensa: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers
xtensa: Replace __ASSEMBLY__ with __ASSEMBLER__ in uapi headers
Highlights include:
Stable fixes:
- NFS don't inherit NFS filesystem capabilities when crossing from one
filesystem to another.
Bugfixes:
- NFS wakeup of __nfs_lookup_revalidate() needs memory barriers.
- NFS improve bounds checking in nfs_fh_to_dentry().
- NFS Fix allocation errors when writing to a NFS file backed loopback
device.
- NFSv4: More listxattr fixes
- SUNRPC: fix client handling of TLS alerts.
- pNFS block/scsi layout fix for an uninitialised pointer dereference.
- pNFS block/scsi layout fixes for the extent encoding, stripe mapping,
and disk offset overflows.
- pNFS layoutcommit work around for RPC size limitations.
- pNFS/flexfiles avoid looping when handling fatal errors after layoutget.
- localio: fix various race conditions.
Features and cleanups:
- Add NFSv4 support for retrieving the btime.
- NFS: Allow folio migration for the case of mode == MIGRATE_SYNC.
- NFS: Support using a kernel keyring to store TLS certificates.
- NFSv4: Speed up delegation lookup using a hash table.
- Assorted cleanups to remove unused variables and struct fields.
- Assorted new tracepoints to improve debugging.
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Merge tag 'nfs-for-6.17-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
Stable fixes:
- don't inherit NFS filesystem capabilities when crossing from one
filesystem to another
Bugfixes:
- NFS wakeup of __nfs_lookup_revalidate() needs memory barriers
- NFS improve bounds checking in nfs_fh_to_dentry()
- NFS Fix allocation errors when writing to a NFS file backed
loopback device
- NFSv4: More listxattr fixes
- SUNRPC: fix client handling of TLS alerts
- pNFS block/scsi layout fix for an uninitialised pointer
dereference
- pNFS block/scsi layout fixes for the extent encoding, stripe
mapping, and disk offset overflows
- pNFS layoutcommit work around for RPC size limitations
- pNFS/flexfiles avoid looping when handling fatal errors after
layoutget
- localio: fix various race conditions
Features and cleanups:
- Add NFSv4 support for retrieving the btime
- NFS: Allow folio migration for the case of mode == MIGRATE_SYNC
- NFS: Support using a kernel keyring to store TLS certificates
- NFSv4: Speed up delegation lookup using a hash table
- Assorted cleanups to remove unused variables and struct fields
- Assorted new tracepoints to improve debugging"
* tag 'nfs-for-6.17-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (44 commits)
NFS/localio: nfs_uuid_put() fix the wake up after unlinking the file
NFS/localio: nfs_uuid_put() fix races with nfs_open/close_local_fh()
NFS/localio: nfs_close_local_fh() fix check for file closed
NFSv4: Remove duplicate lookups, capability probes and fsinfo calls
NFS: Fix the setting of capabilities when automounting a new filesystem
sunrpc: fix client side handling of tls alerts
nfs/localio: use read_seqbegin() rather than read_seqbegin_or_lock()
NFS: Fixup allocation flags for nfsiod's __GFP_NORETRY
NFSv4.2: another fix for listxattr
NFS: Fix filehandle bounds checking in nfs_fh_to_dentry()
SUNRPC: Silence warnings about parameters not being described
NFS: Clean up pnfs_put_layout_hdr()/pnfs_destroy_layout_final()
NFS: Fix wakeup of __nfs_lookup_revalidate() in unblock_revalidate()
NFS: use a hash table for delegation lookup
NFS: track active delegations per-server
NFS: move the delegation_watermark module parameter
NFS: cleanup nfs_inode_reclaim_delegation
NFS: cleanup error handling in nfs4_server_common_setup
pNFS/flexfiles: don't attempt pnfs on fatal DS errors
NFS: drop __exit from nfs_exit_keyring
...
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Merge tag 'v6.17rc-part2-SMB3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull more smb client updates from Steve French:
"Non-smbdirect:
- Fix null ptr deref caused by delay in global spinlock
initialization
- Two fixes for native symlink creation with SMB3.1.1 POSIX
Extensions
- Fix for socket special file creation with SMB3.1.1 POSIX Exensions
- Reduce lock contention by splitting out mid_counter_lock
- move SMB1 transport code to separate file to reduce module size
when support for legacy servers is disabled
- Two cleanup patches: rename mid_lock to make it clearer what it
protects and one to convert mid flags to bool to make clearer
Smbdirect/RDMA restructuring and fixes:
- Fix for error handling in send done
- Remove unneeded empty packet queue
- Fix put_receive_buffer error path
- Two fixes to recv_done error paths
- Remove unused variable
- Improve response and recvmsg type handling
- Fix handling of incoming message type
- Two cleanup fixes for better handling smbdirect recv io
- Two cleanup fixes for socket spinlock
- Two patches that add socket reassembly struct
- Remove unused connection_status enum
- Use flag in common header for SMBDIRECT_RECV_IO_MAX_SGE
- Two cleanup patches to introduce and use smbdirect send io
- Two cleanup patches to introduce and use smbdirect send_io struct
- Fix to return error if rdma connect takes longer than 5 seconds
- Error logging improvements
- Fix redundand call to init_waitqueue_head
- Remove unneeded wait queue"
* tag 'v6.17rc-part2-SMB3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6: (33 commits)
smb: client: only use a single wait_queue to monitor smbdirect connection status
smb: client: don't call init_waitqueue_head(&info->conn_wait) twice in _smbd_get_connection
smb: client: improve logging in smbd_conn_upcall()
smb: client: return an error if rdma_connect does not return within 5 seconds
smb: client: make use of smbdirect_socket.{send,recv}_io.mem.{cache,pool}
smb: smbdirect: add smbdirect_socket.{send,recv}_io.mem.{cache,pool}
smb: client: make use of struct smbdirect_send_io
smb: smbdirect: introduce struct smbdirect_send_io
smb: client: make use of SMBDIRECT_RECV_IO_MAX_SGE
smb: smbdirect: add SMBDIRECT_RECV_IO_MAX_SGE
smb: client: remove unused enum smbd_connection_status
smb: client: make use of smbdirect_socket.recv_io.reassembly.*
smb: smbdirect: introduce smbdirect_socket.recv_io.reassembly.*
smb: client: make use of smb: smbdirect_socket.recv_io.free.{list,lock}
smb: smbdirect: introduce smbdirect_socket.recv_io.free.{list,lock}
smb: client: make use of struct smbdirect_recv_io
smb: smbdirect: introduce struct smbdirect_recv_io
smb: client: make use of smbdirect_socket->recv_io.expected
smb: smbdirect: introduce smbdirect_socket.recv_io.expected
smb: client: remove unused smbd_connection->fragment_reassembly_remaining
...
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Merge tag 'v6.17rc-part2-ksmbd-server-fixes' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
- Fix limiting repeated connections from same IP
- Fix for extracting shortname when name begins with a dot
- Four smbdirect fixes:
- three fixes to the receive path: potential unmap bug, potential
resource leaks and stale connections, and also potential use
after free race
- cleanup to remove unneeded queue
* tag 'v6.17rc-part2-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
smb: server: Fix extension string in ksmbd_extract_shortname()
ksmbd: limit repeated connections from clients with the same IP
smb: server: let recv_done() avoid touching data_transfer after cleanup/move
smb: server: let recv_done() consistently call put_recvmsg/smb_direct_disconnect_rdma_connection
smb: server: make sure we call ib_dma_unmap_single() only if we called ib_dma_map_single already
smb: server: remove separate empty_recvmsg_queue
This contains an extra patch that drops numa-node-id properties that
were added to the Tegra264 DT files by mistake.
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Merge tag 'tegra-for-6.17-arm64-dt-v3' of https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/fixes
arm64: tegra: Device tree changes for v6.17-rc1
This contains an extra patch that drops numa-node-id properties that
were added to the Tegra264 DT files by mistake.
* tag 'tegra-for-6.17-arm64-dt-v3' of https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
arm64: tegra: Remove numa-node-id properties
arm64: tegra: Add p3971-0089+p3834-0008 support
arm64: tegra: Add memory controller on Tegra264
arm64: tegra: Add Tegra264 support
dt-bindings: memory: tegra: Add Tegra264 support
Link: https://lore.kernel.org/r/20250731162920.3329820-1-thierry.reding@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Kernels configured with CONFIG_MULTIUSER=n have no cap_get_proc().
Check for ENOSYS to recognize this case, and continue on to
attempt to access the requested MSRs (such as temperature).
Signed-off-by: Calvin Owens <calvin@wbinvd.org>
Signed-off-by: Len Brown <len.brown@intel.com>
turbostat.c: In function 'parse_int_file':
turbostat.c:5567:19: error: 'PATH_MAX' undeclared (first use in this function)
5567 | char path[PATH_MAX];
| ^~~~~~~~
turbostat.c: In function 'probe_graphics':
turbostat.c:6787:19: error: 'PATH_MAX' undeclared (first use in this function)
6787 | char path[PATH_MAX];
| ^~~~~~~~
Signed-off-by: Calvin Owens <calvin@wbinvd.org>
Reviewed-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
