-----BEGIN PGP SIGNATURE-----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=Izzg
-----END PGP SIGNATURE-----
Merge tag 'x86_entry_for_7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 entry code updates from Dave Hansen:
"This is entirely composed of a set of long overdue VDSO cleanups. They
makes the VDSO build much more logical and zap quite a bit of old
cruft.
It also results in a coveted net-code-removal diffstat"
* tag 'x86_entry_for_7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/entry/vdso: Add vdso2c to .gitignore
x86/entry/vdso32: Omit '.cfi_offset eflags' for LLVM < 16
MAINTAINERS: Adjust vdso file entry in INTEL SGX
x86/entry/vdso/selftest: Update location of vgetrandom-chacha.S
x86/entry/vdso: Fix filtering of vdso compiler flags
x86/entry/vdso: Update the object paths for "make vdso_install"
x86/entry/vdso32: When using int $0x80, use it directly
x86/cpufeature: Replace X86_FEATURE_SYSENTER32 with X86_FEATURE_SYSFAST32
x86/vdso: Abstract out vdso system call internals
x86/entry/vdso: Include GNU_PROPERTY and GNU_STACK PHDRs
x86/entry/vdso32: Remove open-coded DWARF in sigreturn.S
x86/entry/vdso32: Remove SYSCALL_ENTER_KERNEL macro in sigreturn.S
x86/entry/vdso32: Don't rely on int80_landing_pad for adjusting ip
x86/entry/vdso: Refactor the vdso build
x86/entry/vdso: Move vdso2c to arch/x86/tools
x86/entry/vdso: Rename vdso_image_* to vdso*_image
-----BEGIN PGP SIGNATURE-----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=oa27
-----END PGP SIGNATURE-----
Merge tag 'x86_cleanups_for_v7.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Borislav Petkov:
- The usual set of cleanups and simplifications all over the tree
* tag 'x86_cleanups_for_v7.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/segment: Use MOVL when reading segment registers
selftests/x86: Clean up sysret_rip coding style
x86/mm: Hide mm_free_global_asid() definition under CONFIG_BROADCAST_TLB_FLUSH
x86/crash: Use set_memory_p() instead of __set_memory_prot()
x86/CPU/AMD: Simplify the spectral chicken fix
x86/platform/olpc: Replace strcpy() with strscpy() in xo15_sci_add()
x86/split_lock: Remove dead string when split_lock_detect=fatal
- Provide the missing 64-bit variant of clock_getres()
This allows the extension of CONFIG_COMPAT_32BIT_TIME to the vDSO and
finally the removal of 32-bit time types from the kernel and UAPI.
- Remove the useless and broken getcpu_cache from the VDSO
The intention was to provide a trivial way to retrieve the CPU number from
the VDSO, but as the VDSO data is per process there is no way to make it
work.
- Switch get/put_unaligned() from packed struct to memcpy()
The packed struct violates strict aliasing rules which requires to pass
-fno-strict-aliasing to the compiler. As this are scalar values
__builtin_memcpy() turns them into simple loads and stores
- Use __typeof_unqual__() for __unqual_scalar_typeof()
The get/put_unaligned() changes triggered a new sparse warning when __beNN
types are used with get/put_unaligned() as sparse builds add a special
'bitwise' attribute to them which prevents sparse to evaluate the Generic
in __unqual_scalar_typeof().
Newer sparse versions support __typeof_unqual__() which avoids the problem,
but requires a recent sparse install. So this adds a sanity check to sparse
builds, which validates that sparse is available and capable of handling it.
- Force inline __cvdso_clock_getres_common()
Compilers sometimes un-inline agressively, which results in function call
overhead and problems with automatic stack variable initialization.
Interestingly enough the force inlining results in smaller code than the
un-inlined variant produced by GCC when optimizing for size.
-----BEGIN PGP SIGNATURE-----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=0ogX
-----END PGP SIGNATURE-----
Merge tag 'timers-vdso-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull VDSO updates from Thomas Gleixner:
- Provide the missing 64-bit variant of clock_getres()
This allows the extension of CONFIG_COMPAT_32BIT_TIME to the vDSO and
finally the removal of 32-bit time types from the kernel and UAPI.
- Remove the useless and broken getcpu_cache from the VDSO
The intention was to provide a trivial way to retrieve the CPU number
from the VDSO, but as the VDSO data is per process there is no way to
make it work.
- Switch get/put_unaligned() from packed struct to memcpy()
The packed struct violates strict aliasing rules which requires to
pass -fno-strict-aliasing to the compiler. As this are scalar values
__builtin_memcpy() turns them into simple loads and stores
- Use __typeof_unqual__() for __unqual_scalar_typeof()
The get/put_unaligned() changes triggered a new sparse warning when
__beNN types are used with get/put_unaligned() as sparse builds add a
special 'bitwise' attribute to them which prevents sparse to evaluate
the Generic in __unqual_scalar_typeof().
Newer sparse versions support __typeof_unqual__() which avoids the
problem, but requires a recent sparse install. So this adds a sanity
check to sparse builds, which validates that sparse is available and
capable of handling it.
- Force inline __cvdso_clock_getres_common()
Compilers sometimes un-inline agressively, which results in function
call overhead and problems with automatic stack variable
initialization.
Interestingly enough the force inlining results in smaller code than
the un-inlined variant produced by GCC when optimizing for size.
* tag 'timers-vdso-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
vdso/gettimeofday: Force inlining of __cvdso_clock_getres_common()
x86/percpu: Make CONFIG_USE_X86_SEG_SUPPORT work with sparse
compiler: Use __typeof_unqual__() for __unqual_scalar_typeof()
powerpc/vdso: Provide clock_getres_time64()
tools headers: Remove unneeded ignoring of warnings in unaligned.h
tools headers: Update the linux/unaligned.h copy with the kernel sources
vdso: Switch get/put_unaligned() from packed struct to memcpy()
parisc: Inline a type punning version of get_unaligned_le32()
vdso: Remove struct getcpu_cache
MIPS: vdso: Provide getres_time64() for 32-bit ABIs
arm64: vdso32: Provide clock_getres_time64()
ARM: VDSO: Provide clock_getres_time64()
ARM: VDSO: Patch out __vdso_clock_getres() if unavailable
x86/vdso: Provide clock_getres_time64() for x86-32
selftests: vDSO: vdso_test_abi: Add test for clock_getres_time64()
selftests: vDSO: vdso_test_abi: Use UAPI system call numbers
selftests: vDSO: vdso_config: Add configurations for clock_getres_time64()
vdso: Add prototype for __vdso_clock_getres_time64()
Scheduler Kconfig space updates:
- Further consolidate configurable preemption modes: reduce
the number of architectures that are allowed to offer
PREEMPT_NONE and PREEMPT_VOLUNTARY, reducing the number
of preemption models from four to just two: 'full' and 'lazy'
on up-to-date architectures (arm64, loongarch, powerpc,
riscv, s390, x86).
None and voluntary are only available as legacy features
on platforms that don't implement lazy preemption yet,
or which don't even support preemption.
The goal is to eventually remove cond_resched() and
voluntary preemption altogether.
(Peter Zijlstra)
RSEQ based 'scheduler time slice extension' support:
This allows a thread to request a time slice extension when it
enters a critical section to avoid contention on a resource when
the thread is scheduled out inside of the critical section.
- Add fields and constants for time slice extension
- Provide static branch for time slice extensions
- Add statistics for time slice extensions
- Add prctl() to enable time slice extensions
- Implement sys_rseq_slice_yield()
- Implement syscall entry work for time slice extensions
- Implement time slice extension enforcement timer
- Reset slice extension when scheduled
- Implement rseq_grant_slice_extension()
- entry: Hook up rseq time slice extension
- selftests: Implement time slice extension test
(Thomas Gleixner)
- Allow registering RSEQ with slice extension
- Move slice_ext_nsec to debugfs
- Lower default slice extension
- selftests/rseq: Add rseq slice histogram script
(Peter Zijlstra)
Scheduler performance/scalability improvements:
- Update rq->avg_idle when a task is moved to an idle CPU,
which improves the scalability of various workloads.
(Shubhang Kaushik)
- Reorder fields in 'struct rq' for better caching
(Blake Jones)
- Fair scheduler SMP NOHZ balancing code speedups:
- Move checking for nohz cpus after time check
- Change likelyhood of nohz.nr_cpus
- Remove nohz.nr_cpus and use weight of cpumask instead
(Shrikanth Hegde)
- Avoid false sharing for sched_clock_irqtime (Wangyang Guo)
- Drop useless cpumask_empty() in find_energy_efficient_cpu()
- Simplify task_numa_find_cpu()
- Use cpumask_weight_and() in sched_balance_find_dst_group()
(Yury Norov)
DL scheduler updates:
- Add a deadline server for sched_ext tasks (by Andrea Righi and
Joel Fernandes, with fixes by Peter Zijlstra)
RT scheduler updates:
- Skip currently executing CPU in rto_next_cpu() (Chen Jinghuang)
Entry code updates and performance improvements, which is part of the
scheduler tree in this cycle due to interdependencies with the RSEQ
based time slice extension work:
- Remove unused syscall argument from syscall_trace_enter()
- Rework syscall_exit_to_user_mode_work() for architecture reuse
- Add arch_ptrace_report_syscall_entry/exit()
- Inline syscall_exit_work() and syscall_trace_enter()
(Jinjie Ruan)
Scheduler core updates:
- Rework sched_class::wakeup_preempt() and rq_modified_*()
- Avoid rq->lock bouncing in sched_balance_newidle()
- Rename rcu_dereference_check_sched_domain() =>
rcu_dereference_sched_domain()
- <linux/compiler_types.h>: Add the __signed_scalar_typeof() helper
(Peter Zijlstra)
Fair scheduler updates/refactoring:
- Fold the sched_avg update
- Change rcu_dereference_check_sched_domain() to rcu-sched
- Switch to rcu_dereference_all()
- Remove superfluous rcu_read_lock()
- Limit hrtick work
(Peter Zijlstra)
- Join two #ifdef CONFIG_FAIR_GROUP_SCHED blocks
- Clean up comments in 'struct cfs_rq'
- Separate se->vlag from se->vprot
- Rename cfs_rq::avg_load to cfs_rq::sum_weight
- Rename cfs_rq::avg_vruntime to ::sum_w_vruntime & helper functions
- Introduce and use the vruntime_cmp() and vruntime_op() wrappers
for wrapped-signed aritmetics
- Sort out 'blocked_load*' namespace noise
(Ingo Molnar)
Scheduler debugging code updates:
- Export hidden tracepoints to modules (Gabriele Monaco)
- Convert copy_from_user() + kstrtouint() to kstrtouint_from_user()
(Fushuai Wang)
- Add assertions to QUEUE_CLASS (Peter Zijlstra)
- hrtimer: Fix tracing oddity (Thomas Gleixner)
Misc fixes and cleanups:
- Re-evaluate scheduling when migrating queued tasks out of
throttled cgroups (Zicheng Qu)
- Remove task_struct->faults_disabled_mapping (Christoph Hellwig)
- Fix math notation errors in avg_vruntime comment (Zhan Xusheng)
- sched/cpufreq: Use %pe format for PTR_ERR() printing (zenghongling)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=Xj2f
-----END PGP SIGNATURE-----
Merge tag 'sched-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Scheduler Kconfig space updates:
- Further consolidate configurable preemption modes (Peter Zijlstra)
Reduce the number of architectures that are allowed to offer
PREEMPT_NONE and PREEMPT_VOLUNTARY, reducing the number of
preemption models from four to just two: 'full' and 'lazy' on
up-to-date architectures (arm64, loongarch, powerpc, riscv, s390,
x86).
None and voluntary are only available as legacy features on
platforms that don't implement lazy preemption yet, or which don't
even support preemption.
The goal is to eventually remove cond_resched() and voluntary
preemption altogether.
RSEQ based 'scheduler time slice extension' support (Thomas Gleixner
and Peter Zijlstra):
This allows a thread to request a time slice extension when it enters
a critical section to avoid contention on a resource when the thread
is scheduled out inside of the critical section.
- Add fields and constants for time slice extension
- Provide static branch for time slice extensions
- Add statistics for time slice extensions
- Add prctl() to enable time slice extensions
- Implement sys_rseq_slice_yield()
- Implement syscall entry work for time slice extensions
- Implement time slice extension enforcement timer
- Reset slice extension when scheduled
- Implement rseq_grant_slice_extension()
- entry: Hook up rseq time slice extension
- selftests: Implement time slice extension test
- Allow registering RSEQ with slice extension
- Move slice_ext_nsec to debugfs
- Lower default slice extension
- selftests/rseq: Add rseq slice histogram script
Scheduler performance/scalability improvements:
- Update rq->avg_idle when a task is moved to an idle CPU, which
improves the scalability of various workloads (Shubhang Kaushik)
- Reorder fields in 'struct rq' for better caching (Blake Jones)
- Fair scheduler SMP NOHZ balancing code speedups (Shrikanth Hegde):
- Move checking for nohz cpus after time check
- Change likelyhood of nohz.nr_cpus
- Remove nohz.nr_cpus and use weight of cpumask instead
- Avoid false sharing for sched_clock_irqtime (Wangyang Guo)
- Cleanups (Yury Norov):
- Drop useless cpumask_empty() in find_energy_efficient_cpu()
- Simplify task_numa_find_cpu()
- Use cpumask_weight_and() in sched_balance_find_dst_group()
DL scheduler updates:
- Add a deadline server for sched_ext tasks (by Andrea Righi and Joel
Fernandes, with fixes by Peter Zijlstra)
RT scheduler updates:
- Skip currently executing CPU in rto_next_cpu() (Chen Jinghuang)
Entry code updates and performance improvements (Jinjie Ruan)
This is part of the scheduler tree in this cycle due to inter-
dependencies with the RSEQ based time slice extension work:
- Remove unused syscall argument from syscall_trace_enter()
- Rework syscall_exit_to_user_mode_work() for architecture reuse
- Add arch_ptrace_report_syscall_entry/exit()
- Inline syscall_exit_work() and syscall_trace_enter()
Scheduler core updates (Peter Zijlstra):
- Rework sched_class::wakeup_preempt() and rq_modified_*()
- Avoid rq->lock bouncing in sched_balance_newidle()
- Rename rcu_dereference_check_sched_domain() =>
rcu_dereference_sched_domain()
- <linux/compiler_types.h>: Add the __signed_scalar_typeof() helper
Fair scheduler updates/refactoring (Peter Zijlstra and Ingo Molnar):
- Fold the sched_avg update
- Change rcu_dereference_check_sched_domain() to rcu-sched
- Switch to rcu_dereference_all()
- Remove superfluous rcu_read_lock()
- Limit hrtick work
- Join two #ifdef CONFIG_FAIR_GROUP_SCHED blocks
- Clean up comments in 'struct cfs_rq'
- Separate se->vlag from se->vprot
- Rename cfs_rq::avg_load to cfs_rq::sum_weight
- Rename cfs_rq::avg_vruntime to ::sum_w_vruntime & helper functions
- Introduce and use the vruntime_cmp() and vruntime_op() wrappers for
wrapped-signed aritmetics
- Sort out 'blocked_load*' namespace noise
Scheduler debugging code updates:
- Export hidden tracepoints to modules (Gabriele Monaco)
- Convert copy_from_user() + kstrtouint() to kstrtouint_from_user()
(Fushuai Wang)
- Add assertions to QUEUE_CLASS (Peter Zijlstra)
- hrtimer: Fix tracing oddity (Thomas Gleixner)
Misc fixes and cleanups:
- Re-evaluate scheduling when migrating queued tasks out of throttled
cgroups (Zicheng Qu)
- Remove task_struct->faults_disabled_mapping (Christoph Hellwig)
- Fix math notation errors in avg_vruntime comment (Zhan Xusheng)
- sched/cpufreq: Use %pe format for PTR_ERR() printing
(zenghongling)"
* tag 'sched-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits)
sched: Re-evaluate scheduling when migrating queued tasks out of throttled cgroups
sched/cpufreq: Use %pe format for PTR_ERR() printing
sched/rt: Skip currently executing CPU in rto_next_cpu()
sched/clock: Avoid false sharing for sched_clock_irqtime
selftests/sched_ext: Add test for DL server total_bw consistency
selftests/sched_ext: Add test for sched_ext dl_server
sched/debug: Fix dl_server (re)start conditions
sched/debug: Add support to change sched_ext server params
sched_ext: Add a DL server for sched_ext tasks
sched/debug: Stop and start server based on if it was active
sched/debug: Fix updating of ppos on server write ops
sched/deadline: Clear the defer params
entry: Inline syscall_exit_work() and syscall_trace_enter()
entry: Add arch_ptrace_report_syscall_entry/exit()
entry: Rework syscall_exit_to_user_mode_work() for architecture reuse
entry: Remove unused syscall argument from syscall_trace_enter()
sched: remove task_struct->faults_disabled_mapping
sched: Update rq->avg_idle when a task is moved to an idle CPU
selftests/rseq: Add rseq slice histogram script
hrtimer: Fix trace oddity
...
Lock debugging:
- Implement compiler-driven static analysis locking context
checking, using the upcoming Clang 22 compiler's context
analysis features. (Marco Elver)
We removed Sparse context analysis support, because prior to
removal even a defconfig kernel produced 1,700+ context
tracking Sparse warnings, the overwhelming majority of which
are false positives. On an allmodconfig kernel the number of
false positive context tracking Sparse warnings grows to
over 5,200... On the plus side of the balance actual locking
bugs found by Sparse context analysis is also rather ... sparse:
I found only 3 such commits in the last 3 years. So the
rate of false positives and the maintenance overhead is
rather high and there appears to be no active policy in
place to achieve a zero-warnings baseline to move the
annotations & fixers to developers who introduce new code.
Clang context analysis is more complete and more aggressive
in trying to find bugs, at least in principle. Plus it has
a different model to enabling it: it's enabled subsystem by
subsystem, which results in zero warnings on all relevant
kernel builds (as far as our testing managed to cover it).
Which allowed us to enable it by default, similar to other
compiler warnings, with the expectation that there are no
warnings going forward. This enforces a zero-warnings baseline
on clang-22+ builds. (Which are still limited in distribution,
admittedly.)
Hopefully the Clang approach can lead to a more maintainable
zero-warnings status quo and policy, with more and more
subsystems and drivers enabling the feature. Context tracking
can be enabled for all kernel code via WARN_CONTEXT_ANALYSIS_ALL=y
(default disabled), but this will generate a lot of false positives.
( Having said that, Sparse support could still be added back,
if anyone is interested - the removal patch is still
relatively straightforward to revert at this stage. )
Rust integration updates: (Alice Ryhl, Fujita Tomonori, Boqun Feng)
- Add support for Atomic<i8/i16/bool> and replace most Rust native
AtomicBool usages with Atomic<bool>
- Clean up LockClassKey and improve its documentation
- Add missing Send and Sync trait implementation for SetOnce
- Make ARef Unpin as it is supposed to be
- Add __rust_helper to a few Rust helpers as a preparation for
helper LTO
- Inline various lock related functions to avoid additional
function calls.
WW mutexes:
- Extend ww_mutex tests and other test-ww_mutex updates (John Stultz)
Misc fixes and cleanups:
- rcu: Mark lockdep_assert_rcu_helper() __always_inline
(Arnd Bergmann)
- locking/local_lock: Include more missing headers (Peter Zijlstra)
- seqlock: fix scoped_seqlock_read kernel-doc (Randy Dunlap)
- rust: sync: Replace `kernel::c_str!` with C-Strings
(Tamir Duberstein)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=N1gA
-----END PGP SIGNATURE-----
Merge tag 'locking-core-2026-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Lock debugging:
- Implement compiler-driven static analysis locking context checking,
using the upcoming Clang 22 compiler's context analysis features
(Marco Elver)
We removed Sparse context analysis support, because prior to
removal even a defconfig kernel produced 1,700+ context tracking
Sparse warnings, the overwhelming majority of which are false
positives. On an allmodconfig kernel the number of false positive
context tracking Sparse warnings grows to over 5,200... On the plus
side of the balance actual locking bugs found by Sparse context
analysis is also rather ... sparse: I found only 3 such commits in
the last 3 years. So the rate of false positives and the
maintenance overhead is rather high and there appears to be no
active policy in place to achieve a zero-warnings baseline to move
the annotations & fixers to developers who introduce new code.
Clang context analysis is more complete and more aggressive in
trying to find bugs, at least in principle. Plus it has a different
model to enabling it: it's enabled subsystem by subsystem, which
results in zero warnings on all relevant kernel builds (as far as
our testing managed to cover it). Which allowed us to enable it by
default, similar to other compiler warnings, with the expectation
that there are no warnings going forward. This enforces a
zero-warnings baseline on clang-22+ builds (Which are still limited
in distribution, admittedly)
Hopefully the Clang approach can lead to a more maintainable
zero-warnings status quo and policy, with more and more subsystems
and drivers enabling the feature. Context tracking can be enabled
for all kernel code via WARN_CONTEXT_ANALYSIS_ALL=y (default
disabled), but this will generate a lot of false positives.
( Having said that, Sparse support could still be added back,
if anyone is interested - the removal patch is still
relatively straightforward to revert at this stage. )
Rust integration updates: (Alice Ryhl, Fujita Tomonori, Boqun Feng)
- Add support for Atomic<i8/i16/bool> and replace most Rust native
AtomicBool usages with Atomic<bool>
- Clean up LockClassKey and improve its documentation
- Add missing Send and Sync trait implementation for SetOnce
- Make ARef Unpin as it is supposed to be
- Add __rust_helper to a few Rust helpers as a preparation for
helper LTO
- Inline various lock related functions to avoid additional function
calls
WW mutexes:
- Extend ww_mutex tests and other test-ww_mutex updates (John
Stultz)
Misc fixes and cleanups:
- rcu: Mark lockdep_assert_rcu_helper() __always_inline (Arnd
Bergmann)
- locking/local_lock: Include more missing headers (Peter Zijlstra)
- seqlock: fix scoped_seqlock_read kernel-doc (Randy Dunlap)
- rust: sync: Replace `kernel::c_str!` with C-Strings (Tamir
Duberstein)"
* tag 'locking-core-2026-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (90 commits)
locking/rwlock: Fix write_trylock_irqsave() with CONFIG_INLINE_WRITE_TRYLOCK
rcu: Mark lockdep_assert_rcu_helper() __always_inline
compiler-context-analysis: Remove __assume_ctx_lock from initializers
tomoyo: Use scoped init guard
crypto: Use scoped init guard
kcov: Use scoped init guard
compiler-context-analysis: Introduce scoped init guards
cleanup: Make __DEFINE_LOCK_GUARD handle commas in initializers
seqlock: fix scoped_seqlock_read kernel-doc
tools: Update context analysis macros in compiler_types.h
rust: sync: Replace `kernel::c_str!` with C-Strings
rust: sync: Inline various lock related methods
rust: helpers: Move #define __rust_helper out of atomic.c
rust: wait: Add __rust_helper to helpers
rust: time: Add __rust_helper to helpers
rust: task: Add __rust_helper to helpers
rust: sync: Add __rust_helper to helpers
rust: refcount: Add __rust_helper to helpers
rust: rcu: Add __rust_helper to helpers
rust: processor: Add __rust_helper to helpers
...
-----BEGIN PGP SIGNATURE-----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=cBdK
-----END PGP SIGNATURE-----
Merge tag 'bpf-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:
- Support associating BPF program with struct_ops (Amery Hung)
- Switch BPF local storage to rqspinlock and remove recursion detection
counters which were causing false positives (Amery Hung)
- Fix live registers marking for indirect jumps (Anton Protopopov)
- Introduce execution context detection BPF helpers (Changwoo Min)
- Improve verifier precision for 32bit sign extension pattern
(Cupertino Miranda)
- Optimize BTF type lookup by sorting vmlinux BTF and doing binary
search (Donglin Peng)
- Allow states pruning for misc/invalid slots in iterator loops (Eduard
Zingerman)
- In preparation for ASAN support in BPF arenas teach libbpf to move
global BPF variables to the end of the region and enable arena kfuncs
while holding locks (Emil Tsalapatis)
- Introduce support for implicit arguments in kfuncs and migrate a
number of them to new API. This is a prerequisite for cgroup
sub-schedulers in sched-ext (Ihor Solodrai)
- Fix incorrect copied_seq calculation in sockmap (Jiayuan Chen)
- Fix ORC stack unwind from kprobe_multi (Jiri Olsa)
- Speed up fentry attach by using single ftrace direct ops in BPF
trampolines (Jiri Olsa)
- Require frozen map for calculating map hash (KP Singh)
- Fix lock entry creation in TAS fallback in rqspinlock (Kumar
Kartikeya Dwivedi)
- Allow user space to select cpu in lookup/update operations on per-cpu
array and hash maps (Leon Hwang)
- Make kfuncs return trusted pointers by default (Matt Bobrowski)
- Introduce "fsession" support where single BPF program is executed
upon entry and exit from traced kernel function (Menglong Dong)
- Allow bpf_timer and bpf_wq use in all programs types (Mykyta
Yatsenko, Andrii Nakryiko, Kumar Kartikeya Dwivedi, Alexei
Starovoitov)
- Make KF_TRUSTED_ARGS the default for all kfuncs and clean up their
definition across the tree (Puranjay Mohan)
- Allow BPF arena calls from non-sleepable context (Puranjay Mohan)
- Improve register id comparison logic in the verifier and extend
linked registers with negative offsets (Puranjay Mohan)
- In preparation for BPF-OOM introduce kfuncs to access memcg events
(Roman Gushchin)
- Use CFI compatible destructor kfunc type (Sami Tolvanen)
- Add bitwise tracking for BPF_END in the verifier (Tianci Cao)
- Add range tracking for BPF_DIV and BPF_MOD in the verifier (Yazhou
Tang)
- Make BPF selftests work with 64k page size (Yonghong Song)
* tag 'bpf-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (268 commits)
selftests/bpf: Fix outdated test on storage->smap
selftests/bpf: Choose another percpu variable in bpf for btf_dump test
selftests/bpf: Remove test_task_storage_map_stress_lookup
selftests/bpf: Update task_local_storage/task_storage_nodeadlock test
selftests/bpf: Update task_local_storage/recursion test
selftests/bpf: Update sk_storage_omem_uncharge test
bpf: Switch to bpf_selem_unlink_nofail in bpf_local_storage_{map_free, destroy}
bpf: Support lockless unlink when freeing map or local storage
bpf: Prepare for bpf_selem_unlink_nofail()
bpf: Remove unused percpu counter from bpf_local_storage_map_free
bpf: Remove cgroup local storage percpu counter
bpf: Remove task local storage percpu counter
bpf: Change local_storage->lock and b->lock to rqspinlock
bpf: Convert bpf_selem_unlink to failable
bpf: Convert bpf_selem_link_map to failable
bpf: Convert bpf_selem_unlink_map to failable
bpf: Select bpf_local_storage_map_bucket based on bpf_local_storage
selftests/xsk: fix number of Tx frags in invalid packet
selftests/xsk: properly handle batch ending in the middle of a packet
bpf: Prevent reentrance into call_rcu_tasks_trace()
...
- Various missed __counted_by annotations (Thorsten Blum)
- Various missed -Wflex-array-member-not-at-end fixes (Gustavo A. R. Silva)
- Avoid leftover tempfiles for interrupted compile-time FORTIFY tests
(Nicolas Schier)
- Remove non-existant CONFIG_UBSAN_REPORT_FULL from docs (Stefan Wiehler)
- fortify: Use C arithmetic not FIELD_xxx() in FORTIFY_REASON defines
(David Laight)
- Add __counted_by_ptr attribute, tests, and first user (Bill Wendling,
Kees Cook)
- Update MAINTAINERS file to make hardening section not include pstore
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCaYopPQAKCRA2KwveOeQk
u5QDAQDj9ygsbzLj9EtXtU3T03GTvix4Rx7RkaBAMPSDEJGhNQD+M3dP6Z2ogEMz
1Km6dAC7nTEujsVFur9BVpyEgoBjjQM=
=G1gb
-----END PGP SIGNATURE-----
Merge tag 'hardening-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"Mostly small cleanups and various scattered annotations and flex array
warning fixes that we reviewed by unlanded in other trees. Introduces
new annotation for expanding counted_by to pointer members, now that
compiler behavior between GCC and Clang has been normalized.
- Various missed __counted_by annotations (Thorsten Blum)
- Various missed -Wflex-array-member-not-at-end fixes (Gustavo A. R.
Silva)
- Avoid leftover tempfiles for interrupted compile-time FORTIFY tests
(Nicolas Schier)
- Remove non-existant CONFIG_UBSAN_REPORT_FULL from docs (Stefan
Wiehler)
- fortify: Use C arithmetic not FIELD_xxx() in FORTIFY_REASON defines
(David Laight)
- Add __counted_by_ptr attribute, tests, and first user (Bill
Wendling, Kees Cook)
- Update MAINTAINERS file to make hardening section not include
pstore"
* tag 'hardening-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
MAINTAINERS: pstore: Remove L: entry
nfp: tls: Avoid -Wflex-array-member-not-at-end warnings
carl9170: Avoid -Wflex-array-member-not-at-end warning
coredump: Use __counted_by_ptr for struct core_name::corename
lkdtm/bugs: Add __counted_by_ptr() test PTR_BOUNDS
compiler_types.h: Attributes: Add __counted_by_ptr macro
fortify: Cleanup temp file also on non-successful exit
fortify: Rename temporary file to match ignore pattern
fortify: Use C arithmetic not FIELD_xxx() in FORTIFY_REASON defines
ecryptfs: Annotate struct ecryptfs_message with __counted_by
fs/xattr: Annotate struct simple_xattr with __counted_by
crypto: af_alg - Annotate struct af_alg_iv with __counted_by
Kconfig.ubsan: Remove CONFIG_UBSAN_REPORT_FULL from documentation
drm/nouveau: fifo: Avoid -Wflex-array-member-not-at-end warning
ACPI:
- Add interrupt signalling support to the AGDI handler.
- Add Catalin and myself to the arm64 ACPI MAINTAINERS entry.
CPU features:
- Drop Kconfig options for PAN and LSE (these are detected at runtime).
- Add support for 64-byte single-copy atomic instructions (LS64/LS64V).
- Reduce MTE overhead when executing in the kernel on Ampere CPUs.
- Ensure POR_EL0 value exposed via ptrace is up-to-date.
- Fix error handling on GCS allocation failure.
CPU frequency:
- Add CPU hotplug support to the FIE setup in the AMU driver.
Entry code:
- Minor optimisations and cleanups to the syscall entry path.
- Preparatory rework for moving to the generic syscall entry code.
Hardware errata:
- Work around Spectre-BHB on TSV110 processors.
- Work around broken CMO propagation on some systems with the SI-L1
interconnect.
Miscellaneous:
- Disable branch profiling for arch/arm64/ to avoid issues with noinstr.
- Minor fixes and cleanups (kexec + ubsan, WARN_ONCE() instead of
WARN_ON(), reduction of boolean expression).
- Fix custom __READ_ONCE() implementation for LTO builds when operating
on non-atomic types.
Perf and PMUs:
- Support for CMN-600AE.
- Be stricter about supported hardware in the CMN driver.
- Support for DSU-110 and DSU-120.
- Support for the cycles event in the DSU driver (alongside the
dedicated cycles counter).
- Use IRQF_NO_THREAD instead of IRQF_ONESHOT in the cxlpmu driver.
- Use !bitmap_empty() as a faster alternative to bitmap_weight().
- Fix SPE error handling when failing to resume profiling.
Selftests:
- Add support for the FORCE_TARGETS option to the arm64 kselftests.
- Avoid nolibc-specific my_syscall() function.
- Add basic test for the LS64 HWCAP.
- Extend fp-pidbench to cover additional workload patterns.
-----BEGIN PGP SIGNATURE-----
iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmmJ16QQHHdpbGxAa2Vy
bmVsLm9yZwAKCRC3rHDchMFjNFO0CACxYy5klTAdqB+RjhxSbibZ6mmch/mX3zLl
qBp0HeKuwSv+EWEblmr6KMrr/S5YjtEMboOC7GnmEdSeM6hucu5gPiEb7bIDQfbB
5KJXoUlN1C+7Na4CimfordWiHIZw2d7mTumJcnsqMo7XN83t+4yqs98sET7WRCy5
WUyqHH/dGZsGcsBMrRRO3UriHCpU425GE0jopF5OkwCs4dwyUVIV8SmZtK4Ovi3u
Kin75UYgeVum8A218oHosTfYTBt4p/cSdfVVv5f3P14Q7lIstyJR7ZDqepTP2XSJ
95W3nuMfOT1lx7f6pqvHc+4Ccl/+DQnbW1PWwv8f3nXAKVVMafWf
=3SfC
-----END PGP SIGNATURE-----
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's a little less than normal, probably due to LPC & Christmas/New
Year meaning that a few series weren't quite ready or reviewed in
time. It's still useful across the board, despite the only real
feature being support for the LS64 feature enabling 64-byte atomic
accesses to endpoints that support it.
ACPI:
- Add interrupt signalling support to the AGDI handler
- Add Catalin and myself to the arm64 ACPI MAINTAINERS entry
CPU features:
- Drop Kconfig options for PAN and LSE (these are detected at runtime)
- Add support for 64-byte single-copy atomic instructions (LS64/LS64V)
- Reduce MTE overhead when executing in the kernel on Ampere CPUs
- Ensure POR_EL0 value exposed via ptrace is up-to-date
- Fix error handling on GCS allocation failure
CPU frequency:
- Add CPU hotplug support to the FIE setup in the AMU driver
Entry code:
- Minor optimisations and cleanups to the syscall entry path
- Preparatory rework for moving to the generic syscall entry code
Hardware errata:
- Work around Spectre-BHB on TSV110 processors
- Work around broken CMO propagation on some systems with the SI-L1
interconnect
Miscellaneous:
- Disable branch profiling for arch/arm64/ to avoid issues with
noinstr
- Minor fixes and cleanups (kexec + ubsan, WARN_ONCE() instead of
WARN_ON(), reduction of boolean expression)
- Fix custom __READ_ONCE() implementation for LTO builds when
operating on non-atomic types
Perf and PMUs:
- Support for CMN-600AE
- Be stricter about supported hardware in the CMN driver
- Support for DSU-110 and DSU-120
- Support for the cycles event in the DSU driver (alongside the
dedicated cycles counter)
- Use IRQF_NO_THREAD instead of IRQF_ONESHOT in the cxlpmu driver
- Use !bitmap_empty() as a faster alternative to bitmap_weight()
- Fix SPE error handling when failing to resume profiling
Selftests:
- Add support for the FORCE_TARGETS option to the arm64 kselftests
- Avoid nolibc-specific my_syscall() function
- Add basic test for the LS64 HWCAP
- Extend fp-pidbench to cover additional workload patterns"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (43 commits)
perf/arm-cmn: Reject unsupported hardware configurations
perf: arm_spe: Properly set hw.state on failures
arm64/gcs: Fix error handling in arch_set_shadow_stack_status()
arm64: Fix non-atomic __READ_ONCE() with CONFIG_LTO=y
arm64: poe: fix stale POR_EL0 values for ptrace
kselftest/arm64: Raise default number of loops in fp-pidbench
kselftest/arm64: Add a no-SVE loop after SVE in fp-pidbench
perf/cxlpmu: Replace IRQF_ONESHOT with IRQF_NO_THREAD
arm64: mte: Set TCMA1 whenever MTE is present in the kernel
arm64/ptrace: Return early for ptrace_report_syscall_entry() error
arm64/ptrace: Split report_syscall()
arm64: Remove unused _TIF_WORK_MASK
kselftest/arm64: Add missing file in .gitignore
arm64: errata: Workaround for SI L1 downstream coherency issue
kselftest/arm64: Add HWCAP test for FEAT_LS64
arm64: Add support for FEAT_{LS64, LS64_V}
KVM: arm64: Enable FEAT_{LS64, LS64_V} in the supported guest
arm64: Provide basic EL2 setup for FEAT_{LS64, LS64_V} usage at EL0/1
KVM: arm64: Handle DABT caused by LS64* instructions on unsupported memory
KVM: arm64: Add documentation for KVM_EXIT_ARM_LDST64B
...
Highlights:
* All time-related functionality uses 64-bit timestamps for
y2038 compatibility.
* fread() and fskeek() support.
* ptrace() support.
* Addition of libc-test to the regular kselftests.
* Smaller cleanups and fixes to the code and build system.
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQTg4lxklFHAidmUs57B+h1jyw5bOAUCaYZbJAAKCRDB+h1jyw5b
OBltAP9YupAeS60SqY48GGi4WEWqaEcdOrDI0xOC67UVK0xWeQD/bJiY51f5AQKa
rHUnbHzQGyTBmJ6dRJBzYs7c09EqdQQ=
=ai2F
-----END PGP SIGNATURE-----
Merge tag 'nolibc-20260206-for-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc
Pull nolibc updates from Thomas Weißschuh:
- All time-related functionality uses 64-bit timestamps for
y2038 compatibility
- fread() and fskeek() support
- ptrace() support
- Addition of libc-test to the regular kselftests
- Smaller cleanups and fixes to the code and build system
* tag 'nolibc-20260206-for-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc: (25 commits)
tools/nolibc: Add a simple test for writing to a FILE and reading it back
tools/nolibc: Add fseek() to stdio.h
tools/nolibc: Add fread() to stdio.h
selftests/nolibc: also test libc-test through regular selftest framework
selftests/nolibc: scope custom flags to the nolibc-test target
selftests/nolibc: try to read from stdin in readv_zero test
selftests/nolibc: always build sparc32 tests with -mcpu=v8
tools/nolibc: align sys_vfork() with sys_fork()
selftests/nolibc: drop NOLIBC_SYSROOT=0 logic
selftests/nolibc: add static assertions around time types handling
tools/nolibc: add __nolibc_static_assert()
tools/nolibc: add compiler version detection macros
tools/nolibc: remove time conversions
selftests/nolibc: test compatibility of nolibc and kernel time types
tools/nolibc: always use 64-bit time types
tools/nolibc: use custom structs timespec and timeval
tools/nolibc/select: avoid libgcc 64-bit multiplications
tools/nolibc/gettimeofday: avoid libgcc 64-bit divisions
tools/nolibc: prefer explicit 64-bit time-related system calls
tools/nolibc/time: drop invocation of gettimeofday system call
...
- Add Panther Lake, Wildcat Lake and Nova Lake processor IDs to the
list of supported processors in the intel_tcc_cooling thermal
driver (Srinivas Pandruvada)
- Drop unnecessary explicit driver data clearing on removal from the
intel_pch_thermal driver (Kaushlendra Kumar)
- Add support for "slow" workload type hints to the int340x
processor_thermal driver and enable it on the Panther Lake
platform (Srinivas Pandruvada)
- Use sysfs_emit{_at}() in sysfs show functions in Intel thermal
drivers (Thorsten Blum)
- Update the x86_pkg_temp_thermal driver to handle THERMAL_TEMP_INVALID
that can be passed to it via sysfs as expected (Rafael Wysocki)
- Drop a redundant local variable from the intel_tcc_cooling thermal
driver and fix a kerneldoc comment typo in the TCC library (Sumeet
Pawnikar)
- Fix CFLAGS and LDFLAGS in the pkg-config libthermal template (Romain
Gantois)
- Support multiple temp to raw conversion functions in the Mediatek
LVTS thermal driver and add MT8196 and MT6991 support to it (Laura
Nao)
- Add Mediatek LVTS driver support for MT7987 (Frank Wunderlich)
- Use the existing HZ_PER_MHZ macro on STM32 (Andy Shevchenko)
- Use the existing clamp() macro on BCM2835 (Thorsten Blum)
- Make the reset line optional in order to support new Renesas SoCs
where it is not available and add support for RZ/T2H and RZ/N2H
to the rzg3e thermal driver (Cosmin Tanislav)
- Document RZ/V2N TSU in the r9a09g047-tsu DT bindings (Ovidiu
Panait)
- Fix all kernel-doc warnings in the internal thermal core header
file (Randy Dunlap)
- Fix a device node reference leak in thermal_of_cm_lookup() (Felix Gu)
- Replace some old-style library function calls with ones that are
currently recommended in several places in the thermal core and
debugfs code (Sumeet Pawnikar, Thorsten Blum)
-----BEGIN PGP SIGNATURE-----
iQFGBAABCAAwFiEEcM8Aw/RY0dgsiRUR7l+9nS/U47UFAmmDnCoSHHJqd0Byand5
c29ja2kubmV0AAoJEO5fvZ0v1OO1lyoIAJ5gQviWP4gmifh/osuBbc6EdN5qBnwL
d6oj6oKoTKYC8TCzgIVNf4sOU9BziJgiuB5WSUDqFG6MPy+C/kSztlZ3yVQDpJzW
XgGdgLMK/Sdza6IE8+AfHN3WeYTA4BD7Otda1L965FAY8PN1W4ZzzZyydWHd27Gt
4D9ruuCFZQ52EatMtbtpAX+loapIIFD3jUZ6fxBK1ziAN3en2F57xC4GeJvbS9fz
zpBJld+p19CdfTd/NCHMdqVTc01fL0d6cwnpzdH+aeqmam61SYAzLQrk0Wu3wlfr
m8jqx+F7qL9/X/CUSOoy50K7pBQimUAh80L7YPBV+/gwpW3IO4Ll3KU=
=AqXf
-----END PGP SIGNATURE-----
Merge tag 'thermal-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"These add support for "slow" (long-term trend) workload type hints to
the Intel int340x thermal driver and selftests (and enable it for
Panther Lake), add support for MT8196 along with DT bindings and for
MT7987 to the Mediatek LVTS thermal driver, add support for RZ/T2H and
RZ/N2H along with DT bindings to the Renesas rzg3e thermal driver, add
support for the Panther Lake, Wildcat Lake and Nova Lake processors to
the intel_tcc_cooling driver, fix bugs, make some cosmetic changes
including code cleanups and library function substitutions, and update
documentation.
Specifics:
- Add Panther Lake, Wildcat Lake and Nova Lake processor IDs to the
list of supported processors in the intel_tcc_cooling thermal
driver (Srinivas Pandruvada)
- Drop unnecessary explicit driver data clearing on removal from the
intel_pch_thermal driver (Kaushlendra Kumar)
- Add support for "slow" workload type hints to the int340x
processor_thermal driver and enable it on the Panther Lake platform
(Srinivas Pandruvada)
- Use sysfs_emit{_at}() in sysfs show functions in Intel thermal
drivers (Thorsten Blum)
- Update the x86_pkg_temp_thermal driver to handle
THERMAL_TEMP_INVALID that can be passed to it via sysfs as expected
(Rafael Wysocki)
- Drop a redundant local variable from the intel_tcc_cooling thermal
driver and fix a kerneldoc comment typo in the TCC library (Sumeet
Pawnikar)
- Fix CFLAGS and LDFLAGS in the pkg-config libthermal template
(Romain Gantois)
- Support multiple temp to raw conversion functions in the Mediatek
LVTS thermal driver and add MT8196 and MT6991 support to it (Laura
Nao)
- Add Mediatek LVTS driver support for MT7987 (Frank Wunderlich)
- Use the existing HZ_PER_MHZ macro on STM32 (Andy Shevchenko)
- Use the existing clamp() macro on BCM2835 (Thorsten Blum)
- Make the reset line optional in order to support new Renesas SoCs
where it is not available and add support for RZ/T2H and RZ/N2H to
the rzg3e thermal driver (Cosmin Tanislav)
- Document RZ/V2N TSU in the r9a09g047-tsu DT bindings (Ovidiu
Panait)
- Fix all kernel-doc warnings in the internal thermal core header
file (Randy Dunlap)
- Fix a device node reference leak in thermal_of_cm_lookup() (Felix
Gu)
- Replace some old-style library function calls with ones that are
currently recommended in several places in the thermal core and
debugfs code (Sumeet Pawnikar, Thorsten Blum)
* tag 'thermal-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (34 commits)
drivers: thermal: intel: tcc_cooling: Drop redundant local variable
thermal/of: Fix reference leak in thermal_of_cm_lookup()
thermal: core: thermal_core.h: fix all kernel-doc warnings
thermal: intel: x86_pkg_temp_thermal: Handle invalid temperature
thermal: renesas: rzg3e: add support for RZ/T2H and RZ/N2H
dt-bindings: thermal: r9a09g047-tsu: document RZ/T2H and RZ/N2H
thermal: renesas: rzg3e: make calibration value retrieval per-chip
thermal: renesas: rzg3e: make min and max temperature per-chip
thermal: renesas: rzg3e: make reset optional
dt-bindings: thermal: r9a09g047-tsu: Document RZ/V2N TSU
thermal/drivers/broadcom: Use clamp to simplify bcm2835_thermal_temp2adc
thermal/drivers/stm32: Use predefined HZ_PER_MHZ instead of a custom one
thermal/drivers/mediatek/lvts_thermal: Add mt7987 support
dt-bindings: thermal: mediatek: Add LVTS thermal controller definition for MT7987
dt-bindings: nvmem: mediatek: efuse: Add support for MT8196
thermal/drivers/mediatek/lvts_thermal: Add MT8196 support
thermal/drivers/mediatek/lvts: Support MSR offset for 16-bit calibration data
thermal/drivers/mediatek/lvts: Add support for ATP mode
thermal/drivers/mediatek/lvts: Add lvts_temp_to_raw variant
thermal/drivers/mediatek/lvts: Add platform ops to support alternative conversion logic
...
-----BEGIN PGP SIGNATURE-----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=jNzW
-----END PGP SIGNATURE-----
Merge tag 'for-7.0/block-20260206' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block updates from Jens Axboe:
- Support for batch request processing for ublk, improving the
efficiency of the kernel/ublk server communication. This can yield
nice 7-12% performance improvements
- Support for integrity data for ublk
- Various other ublk improvements and additions, including a ton of
selftests additions and updated
- Move the handling of blk-crypto software fallback from below the
block layer to above it. This reduces the complexity of dealing with
bio splitting
- Series fixing a number of potential deadlocks in blk-mq related to
the queue usage counter and writeback throttling and rq-qos debugfs
handling
- Add an async_depth queue attribute, to resolve a performance
regression that's been around for a qhilw related to the scheduler
depth handling
- Only use task_work for IOPOLL completions on NVMe, if it is necessary
to do so. An earlier fix for an issue resulted in all these
completions being punted to task_work, to guarantee that completions
were only run for a given io_uring ring when it was local to that
ring. With the new changes, we can detect if it's necessary to use
task_work or not, and avoid it if possible.
- rnbd fixes:
- Fix refcount underflow in device unmap path
- Handle PREFLUSH and NOUNMAP flags properly in protocol
- Fix server-side bi_size for special IOs
- Zero response buffer before use
- Fix trace format for flags
- Add .release to rnbd_dev_ktype
- MD pull requests via Yu Kuai
- Fix raid5_run() to return error when log_init() fails
- Fix IO hang with degraded array with llbitmap
- Fix percpu_ref not resurrected on suspend timeout in llbitmap
- Fix GPF in write_page caused by resize race
- Fix NULL pointer dereference in process_metadata_update
- Fix hang when stopping arrays with metadata through dm-raid
- Fix any_working flag handling in raid10_sync_request
- Refactor sync/recovery code path, improve error handling for
badblocks, and remove unused recovery_disabled field
- Consolidate mddev boolean fields into mddev_flags
- Use mempool to allocate stripe_request_ctx and make sure
max_sectors is not less than io_opt in raid5
- Fix return value of mddev_trylock
- Fix memory leak in raid1_run()
- Add Li Nan as mdraid reviewer
- Move phys_vec definitions to the kernel types, mostly in preparation
for some VFIO and RDMA changes
- Improve the speed for secure erase for some devices
- Various little rust updates
- Various other minor fixes, improvements, and cleanups
* tag 'for-7.0/block-20260206' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (162 commits)
blk-mq: ABI/sysfs-block: fix docs build warnings
selftests: ublk: organize test directories by test ID
block: decouple secure erase size limit from discard size limit
block: remove redundant kill_bdev() call in set_blocksize()
blk-mq: add documentation for new queue attribute async_dpeth
block, bfq: convert to use request_queue->async_depth
mq-deadline: covert to use request_queue->async_depth
kyber: covert to use request_queue->async_depth
blk-mq: add a new queue sysfs attribute async_depth
blk-mq: factor out a helper blk_mq_limit_depth()
blk-mq-sched: unify elevators checking for async requests
block: convert nr_requests to unsigned int
block: don't use strcpy to copy blockdev name
blk-mq-debugfs: warn about possible deadlock
blk-mq-debugfs: add missing debugfs_mutex in blk_mq_debugfs_register_hctxs()
blk-mq-debugfs: remove blk_mq_debugfs_unregister_rqos()
blk-mq-debugfs: make blk_mq_debugfs_register_rqos() static
blk-rq-qos: fix possible debugfs_mutex deadlock
blk-mq-debugfs: factor out a helper to register debugfs for all rq_qos
blk-wbt: fix possible deadlock to nest pcpu_alloc_mutex under q_usage_counter
...
Please consider pulling these changes from the signed vfs-7.0-rc1.namespace tag.
Thanks!
Christian
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCaYX49gAKCRCRxhvAZXjc
ovzgAP9BpqMQhMy2VCurru8/T5VAd6eJdgXzEfXqMksL5BNm8gEAsLx666KJNKgm
Sh/yVA2KBjf51gvcLZ4gHOISaMU8bAI=
=RGLf
-----END PGP SIGNATURE-----
Merge tag 'vfs-7.0-rc1.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs mount updates from Christian Brauner:
- statmount: accept fd as a parameter
Extend struct mnt_id_req with a file descriptor field and a new
STATMOUNT_BY_FD flag. When set, statmount() returns mount information
for the mount the fd resides on — including detached mounts
(unmounted via umount2(MNT_DETACH)).
For detached mounts the STATMOUNT_MNT_POINT and STATMOUNT_MNT_NS_ID
mask bits are cleared since neither is meaningful. The capability
check is skipped for STATMOUNT_BY_FD since holding an fd already
implies prior access to the mount and equivalent information is
available through fstatfs() and /proc/pid/mountinfo without
privilege. Includes comprehensive selftests covering both attached
and detached mount cases.
- fs: Remove internal old mount API code (1 patch)
Now that every in-tree filesystem has been converted to the new
mount API, remove all the legacy shim code in fs_context.c that
handled unconverted filesystems. This deletes ~280 lines including
legacy_init_fs_context(), the legacy_fs_context struct, and
associated wrappers. The mount(2) syscall path for userspace remains
untouched. Documentation references to the legacy callbacks are
cleaned up.
- mount: add OPEN_TREE_NAMESPACE to open_tree()
Container runtimes currently use CLONE_NEWNS to copy the caller's
entire mount namespace — only to then pivot_root() and recursively
unmount everything they just copied. With large mount tables and
thousands of parallel container launches this creates significant
contention on the namespace semaphore.
OPEN_TREE_NAMESPACE copies only the specified mount tree (like
OPEN_TREE_CLONE) but returns a mount namespace fd instead of a
detached mount fd. The new namespace contains the copied tree mounted
on top of a clone of the real rootfs.
This functions as a combined unshare(CLONE_NEWNS) + pivot_root() in a
single syscall. Works with user namespaces: an unshare(CLONE_NEWUSER)
followed by OPEN_TREE_NAMESPACE creates a mount namespace owned by
the new user namespace. Mount namespace file mounts are excluded from
the copy to prevent cycles. Includes ~1000 lines of selftests"
* tag 'vfs-7.0-rc1.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
selftests/open_tree: add OPEN_TREE_NAMESPACE tests
mount: add OPEN_TREE_NAMESPACE
fs: Remove internal old mount API code
selftests: statmount: tests for STATMOUNT_BY_FD
statmount: accept fd as a parameter
statmount: permission check should return EPERM
RCU Tasks Trace:
Re-implement RCU tasks trace in term of SRCU-fast, not only more than 500 lines
of code are saved because of the reimplementation, a new set of API,
rcu_read_{,un}lock_tasks_trace(), becomes possible as well. Compared to the
previous rcu_read_{,un}lock_trace(), the new API avoid the task_struct accesses
thanks to the SRCU-fast semantics. As a result, the old
rcu_read{,un}lock_trace() API is now deprecated.
RCU Torture Test:
- Multiple improvements on kvm-series.sh (parallel run and progress showing
metrics)
- Add context checks to rcu_torture_timer().
- Make config2csv.sh properly handle comments in .boot files.
- Include commit discription in testid.txt.
Miscellaneous RCU changes:
- Reduce synchronize_rcu() latency by reporting GP kthread's CPU QS early.
- Use suitable gfp_flags for the init_srcu_struct_nodes().
- Fix rcu_read_unlock() deadloop due to softirq.
- Correctly compute probability to invoke ->exp_current() in rcutorture.
- Make expedited RCU CPU stall warnings detect stall-end races.
RCU nocb:
- Remove unnecessary WakeOvfIsDeferred wake path and callback overload
handling.
- Extract nocb_defer_wakeup_cancel() helper.
-----BEGIN PGP SIGNATURE-----
iQFFBAABCAAvFiEEj5IosQTPz8XU1wRHSXnow7UH+rgFAmmARZERHGJvcXVuQGtl
cm5lbC5vcmcACgkQSXnow7UH+rh8SAf+PDIBWAkdbGgs32EfgpFY42RB4CWygH47
YRup/M3+nU0JcBzNnona1srpHBXRySBJQbvRbsOdlM45VoNQ2wPjig/3vFVRUKYx
uqj9Tze00DS74IIGESoTGp0amZde9SS9JakNRoEfTr+Zpj8N6LFERQw0ywUwjR5b
RR6bz7q05TAl3u2BYUAgNdnf3VWWTmj4WYwArlQ+qRFAyGN+TVj8Ezra6+K5TJ7u
SQYrf7WmRGOhHbVVolvVEOVdACccI8dFl3ebJVE2Ky0gp1o3BLPkcDLJ6gBdTCoE
rRrbnkeqs5V7tOkPFDBeUhLPrm1QxrdEDxUQFWjSApbv161sx7AOZA==
=O9QQ
-----END PGP SIGNATURE-----
Merge tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Boqun Feng:
- RCU Tasks Trace:
Re-implement RCU tasks trace in term of SRCU-fast, not only more than
500 lines of code are saved because of the reimplementation, a new
set of API, rcu_read_{,un}lock_tasks_trace(), becomes possible as
well. Compared to the previous rcu_read_{,un}lock_trace(), the new
API avoid the task_struct accesses thanks to the SRCU-fast semantics.
As a result, the old rcu_read{,un}lock_trace() API is now deprecated.
- RCU Torture Test:
- Multiple improvements on kvm-series.sh (parallel run and
progress showing metrics)
- Add context checks to rcu_torture_timer()
- Make config2csv.sh properly handle comments in .boot files
- Include commit discription in testid.txt
- Miscellaneous RCU changes:
- Reduce synchronize_rcu() latency by reporting GP kthread's
CPU QS early
- Use suitable gfp_flags for the init_srcu_struct_nodes()
- Fix rcu_read_unlock() deadloop due to softirq
- Correctly compute probability to invoke ->exp_current()
in rcutorture
- Make expedited RCU CPU stall warnings detect stall-end races
- RCU nocb:
- Remove unnecessary WakeOvfIsDeferred wake path and callback
overload handling
- Extract nocb_defer_wakeup_cancel() helper
* tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (25 commits)
rcu/nocb: Extract nocb_defer_wakeup_cancel() helper
rcu/nocb: Remove dead callback overload handling
rcu/nocb: Remove unnecessary WakeOvfIsDeferred wake path
rcu: Reduce synchronize_rcu() latency by reporting GP kthread's CPU QS early
srcu: Use suitable gfp_flags for the init_srcu_struct_nodes()
rcu: Fix rcu_read_unlock() deadloop due to softirq
rcutorture: Correctly compute probability to invoke ->exp_current()
rcu: Make expedited RCU CPU stall warnings detect stall-end races
rcutorture: Add --kill-previous option to terminate previous kvm.sh runs
rcutorture: Prevent concurrent kvm.sh runs on same source tree
torture: Include commit discription in testid.txt
torture: Make config2csv.sh properly handle comments in .boot files
torture: Make kvm-series.sh give run numbers and totals
torture: Make kvm-series.sh give build numbers and totals
torture: Parallelize kvm-series.sh guest-OS execution
rcutorture: Add context checks to rcu_torture_timer()
rcutorture: Test rcu_tasks_trace_expedite_current()
srcu: Create an rcu_tasks_trace_expedite_current() function
checkpatch: Deprecate rcu_read_{,un}lock_trace()
rcu: Update Requirements.rst for RCU Tasks Trace
...
resctrl test:
- fixes a devision by zero error on Hygon
- fixes non-contiguous CBM check for Hygon
- defines CPU vendor IDs as bits to match usage
- adds CPU vendor detection for Hygon
- coredeump test: changes to use __builtin_trap() instead of a null pointer
- anon_inode: replaces null pointers with empty arrays
- kublk: includes message in _Static_assert for C11 compatibility
- run_kselftest.sh: adds `--skip` argument option
- pidfd: fixes typo in comment
-----BEGIN PGP SIGNATURE-----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=1cku
-----END PGP SIGNATURE-----
Merge tag 'linux_kselftest-next-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
"resctrl test:
- fix division by zero error on Hygon
- fix non-contiguous CBM check for Hygon
- define CPU vendor IDs as bits to match usage
- add CPU vendor detection for Hygon
misc:
- coredeump test: use __builtin_trap() instead of a null pointer
- anon_inode: replace null pointers with empty arrays
- kublk: include message in _Static_assert for C11 compatibility
- run_kselftest.sh: add `--skip` argument option
- pidfd: fix typo in comment"
* tag 'linux_kselftest-next-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/pidfd: fix typo in comment
selftests/run_kselftest.sh: Add `--skip` argument option
selftests/resctrl: Fix non-contiguous CBM check for Hygon
selftests/resctrl: Add CPU vendor detection for Hygon
selftests/resctrl: Define CPU vendor IDs as bits to match usage
selftests/resctrl: Fix a division by zero error on Hygon
kselftest/kublk: include message in _Static_assert for C11 compatibility
kselftest/anon_inode: replace null pointers with empty arrays
kselftest/coredump: use __builtin_trap() instead of null pointer
kunit:
- adds __rust_helper to helpers
- fixes up const mis-match in many assert functions
- fixes up const mismatch in test_list_sort
- protects KUNIT_BINARY_STR_ASSERTION against ERR_PTR values
- respects KBUILD_OUTPUT env variable by default
- adds bash completion
kunit tool:
- adds test for nested test result reporting
- fixes to not overwrite test status based on subtest counts
- adds 32-bit big endian ARM configuration to qemu_configs
- renames test_data_path() to _test_data_path()
- fixes relying on implicit working directory change
-----BEGIN PGP SIGNATURE-----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=ofp6
-----END PGP SIGNATURE-----
Merge tag 'linux_kselftest-kunit-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
"kunit:
- add __rust_helper to helpers
- fix up const mismatch in many assert functions
- fix up const mismatch in test_list_sort
- protect KUNIT_BINARY_STR_ASSERTION against ERR_PTR values
- respect KBUILD_OUTPUT env variable by default
- add bash completion
kunit tool:
- add test for nested test result reporting
- do not overwrite test status based on subtest counts
- add 32-bit big endian ARM configuration to qemu_configs
- rename test_data_path() to _test_data_path()
- do not rely on implicit working directory change"
* tag 'linux_kselftest-kunit-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: add bash completion
kunit: tool: test: Don't rely on implicit working directory change
kunit: tool: test: Rename test_data_path() to _test_data_path()
kunit: qemu_configs: Add 32-bit big endian ARM configuration
kunit: tool: Don't overwrite test status based on subtest counts
kunit: tool: Add test for nested test result reporting
kunit: respect KBUILD_OUTPUT env variable by default
kunit: Protect KUNIT_BINARY_STR_ASSERTION against ERR_PTR values
test_list_sort: fix up const mismatch
kunit: fix up const mis-match in many assert functions
rust: kunit: add __rust_helper to helpers
bpf_local_storage_free() already does not rely on local_storage->smap
since switching to kmalloc_nolock(). As local_storage->smap is removed,
fix the outdated test by dropping the local_storage->smap check. Keep
the second map in task local storage map test to test that multiple
elements can be added to the storage similar to sk storage test.
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260205222916.1788211-18-ameryhung@gmail.com
bpf_cgrp_storage_busy has been removed. Use bpf_bprintf_nest_level
instead. This percpu variable is also in the bpf subsystem so that
if it is removed in the future, BPF-CI will catch this type of CI-
breaking change.
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260205222916.1788211-17-ameryhung@gmail.com
Remove a test in test_maps that checks if the updating of the percpu
counter in task local storage map is preemption safe as the percpu
counter is now removed.
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260205222916.1788211-16-ameryhung@gmail.com
Adjust the error code we are checking against as
bpf_task_storage_delete() now returns -EDEADLK or -ETIMEDOUT when
deadlock happens.
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260205222916.1788211-15-ameryhung@gmail.com
Update the expected result of the selftest as recursion of task local
storage syscall and helpers have been relaxed. Now that the percpu
counter is removed, task local storage helpers, bpf_task_storage_get()
and bpf_task_storage_delete() can now run on the same CPU at the same
time unless they cause deadlock.
Note that since there is no percpu counter preventing recursion in
task local storage helpers, bpf_trampoline now catches the recursion
of on_update as reported by recursion_misses.
on_enter: tp_btf/sys_enter
on_update: fentry/bpf_local_storage_update
Old behavior New behavior
____________ ____________
on_enter on_enter
bpf_task_storage_get(&map_a) bpf_task_storage_get(&map_a)
bpf_task_storage_trylock succeed bpf_local_storage_update(&map_a)
bpf_local_storage_update(&map_a)
on_update on_update
bpf_task_storage_get(&map_a) bpf_task_storage_get(&map_a)
bpf_task_storage_trylock fail on_update::misses++ (1)
return NULL create and return map_a::ptr
map_a::ptr += 1 (1)
bpf_task_storage_delete(&map_a)
return 0
bpf_task_storage_get(&map_b) bpf_task_storage_get(&map_b)
bpf_task_storage_trylock fail on_update::misses++ (2)
return NULL create and return map_b::ptr
map_b::ptr += 1 (1)
create and return map_a::ptr create and return map_a::ptr
map_a::ptr = 200 map_a::ptr = 200
bpf_task_storage_get(&map_b) bpf_task_storage_get(&map_b)
bpf_task_storage_trylock succeed lockless lookup succeed
bpf_local_storage_update(&map_b) return map_b::ptr
on_update
bpf_task_storage_get(&map_a)
bpf_task_storage_trylock fail
lockless lookup succeed
return map_a::ptr
map_a::ptr += 1 (201)
bpf_task_storage_delete(&map_a)
bpf_task_storage_trylock fail
return -EBUSY
nr_del_errs++ (1)
bpf_task_storage_get(&map_b)
bpf_task_storage_trylock fail
return NULL
create and return ptr
map_b::ptr = 100
Expected result:
map_a::ptr = 201 map_a::ptr = 200
map_b::ptr = 100 map_b::ptr = 1
nr_del_err = 1 nr_del_err = 0
on_update::recursion_misses = 0 on_update::recursion_misses = 2
On_enter::recursion_misses = 0 on_enter::recursion_misses = 0
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260205222916.1788211-14-ameryhung@gmail.com
Check sk_omem_alloc when the caller of bpf_local_storage_destroy()
returns. bpf_local_storage_destroy() now returns the memory to uncharge
to the caller instead of directly uncharge. Therefore, in the
sk_storage_omem_uncharge, check sk_omem_alloc when bpf_sk_storage_free()
returns instead of bpf_local_storage_destroy().
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260205222916.1788211-13-ameryhung@gmail.com
The issue occurs in TOO_MANY_FRAGS test case when xdp_zc_max_segs is set to
an odd number.
TOO_MANY_FRAGS test case contains an invalid packet consisting of
(xdp_zc_max_segs) frags. Every frag, even the last one has XDP_PKT_CONTD
flag set. This packet is expected to be dropped. After that, there is a
valid linear packet, which is expected to be received back.
Once (xdp_zc_max_segs) is an odd number, the last packet cannot be
received, if packet forwarding between Rx and Tx interfaces relies on
the ethernet header, e.g. checks for ETH_P_LOOPBACK. Packet is malformed,
if all traffic is looped.
Turns out, sending function processes multiple invalid frags as if they
were in 2-frag packets. So once the invalid mbuf packet contains an odd
number of those, the valid packet after gets paired with the previous
invalid descriptor, and hence does not get an ethernet header generated, so
it is either dropped or malformed.
Make invalid packets in verbatim mode always have only a single frag. For
such packets, number of frags is otherwise meaningless, as descriptor flags
are pre-configured in verbatim mode and packet data is not generated for
invalid descriptors.
Fixes: 697604492b ("selftests/xsk: add invalid descriptor test for multi-buffer")
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://lore.kernel.org/r/20260203155103.2305816-3-larysa.zaremba@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Referenced commit reduced the scope of the variable pkt, so now it has to
be reinitialized via pkt_stream_get_next_rx_pkt(), which also increments
some counters. When the packet is interrupted by the batch ending, pkt
stream therefore proceeds to the next packet, while xsk ring still contains
the previous one, this results in a pkt_nb mismatch.
Decrement the affected counters when packet is interrupted.
Fixes: 8913e653e9 ("selftests/xsk: Iterate over all the sockets in the receive pkts function")
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://lore.kernel.org/r/20260203155103.2305816-2-larysa.zaremba@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Set UBLK_TEST_DIR to ${TMPDIR:-./ublktest-dir}/${TID}.XXXXXX to create
per-test subdirectories organized by test ID. This makes it easier to
identify and debug specific test runs.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add tests for linked register tracking with negative offsets, BPF_SUB,
and alu32. These test for all edge cases like overflows, etc.
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260204151741.2678118-3-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Previously, the verifier only tracked positive constant deltas between
linked registers using BPF_ADD. This limitation meant patterns like:
r1 = r0;
r1 += -4;
if r1 s>= 0 goto l0_%=; // r1 >= 0 implies r0 >= 4
// verifier couldn't propagate bounds back to r0
if r0 != 0 goto l0_%=;
r0 /= 0; // Verifier thinks this is reachable
l0_%=:
Similar limitation exists for 32-bit registers.
With this change, the verifier can now track negative deltas in reg->off
enabling bound propagation for the above pattern.
For alu32, we make sure the destination register has the upper 32 bits
as 0s before creating the link. BPF_ADD_CONST is split into
BPF_ADD_CONST64 and BPF_ADD_CONST32, the latter is used in case of alu32
and sync_linked_regs uses this to zext the result if known_reg has this
flag.
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260204151741.2678118-2-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Now BPF_END has bitwise tracking support. This patch adds selftests to
cover various cases of BPF_END (`bswap(16|32|64)`, `be(16|32|64)`,
`le(16|32|64)`) with bitwise propagation.
This patch is based on existing `verifier_bswap.c`, and add several
types of new tests:
1. Unconditional byte swap operations:
- bswap16/bswap32/bswap64 with unknown bytes
2. Endian conversion operations (architecture-aware):
- be16/be32/be64: convert to big-endian
* on little-endian: do swap
* on big-endian: truncation (16/32-bit) or no-op (64-bit)
- le16/le32/le64: convert to little-endian
* on big-endian: do swap
* on little-endian: truncation (16/32-bit) or no-op (64-bit)
Each test simulates realistic networking scenarios where a value is
masked with unknown bits (e.g., var_off=(0x0; 0x3f00), range=[0,0x3f00]),
then byte-swapped, and the verifier must prove the result stays within
expected bounds.
Specifically, these selftests are based on dead code elimination:
If the BPF verifier can precisely track bitwise through byte swap
operations, it can prune the trap path (invalid memory access) that
should be unreachable, allowing the program to pass verification.
If bitwise tracking is incorrect, the verifier cannot prove the trap
is unreachable, causing verification failure.
The tests use preprocessor conditionals (#ifdef __BYTE_ORDER__) to
verify correct behavior on both little-endian and big-endian
architectures, and require Clang 18+ for bswap instruction support.
Co-developed-by: Shenghao Yuan <shenghaoyuan0928@163.com>
Signed-off-by: Shenghao Yuan <shenghaoyuan0928@163.com>
Co-developed-by: Yazhou Tang <tangyazhou518@outlook.com>
Signed-off-by: Yazhou Tang <tangyazhou518@outlook.com>
Signed-off-by: Tianci Cao <ziye@zju.edu.cn>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260204111503.77871-3-ziye@zju.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
- Fix a bug where AVIC is incorrectly inhibited when running with x2AVIC
disabled via module param (or on a system without x2AVIC).
- Fix a dangling device posted IRQs bug by explicitly checking if the irqfd is
still active (on the list) when handling an eventfd signal, instead of
zeroing the irqfd's routing information when the irqfd is deassigned.
Zeroing the irqfd's routing info causes arm64 and x86's to not disable
posting for the IRQ (kvm_arch_irq_bypass_del_producer() looks for an MSI),
incorrectly leaving the IRQ in posted mode (and leading to use-after-free
and memory leaks on AMD in particular).
This is both the most pressing and scariest, but it's been in -next for
a while.
- Disable FORTIFY_SOURCE for KVM selftests to prevent the compiler from
generating calls to the checked versions of memset() and friends, which
leads to unexpected page faults in guest code due e.g. __memset_chk@plt
not being resolved.
- Explicitly configure the support XSS from within {svm,vmx}_set_cpu_caps() to
fix a bug where VMX will compute the reference VMCS configuration with SHSTK
and IBT enabled, but then compute each CPUs local config with SHSTK and IBT
disabled if not all CET xfeatures are enabled, e.g. if the kernel is built
with X86_KERNEL_IBT=n. The mismatch in features results in differing nVMX
setting, and ultimately causes kvm-intel.ko to refuse to load with nested=1.
-----BEGIN PGP SIGNATURE-----
iQFIBAABCgAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmmDgqcUHHBib256aW5p
QHJlZGhhdC5jb20ACgkQv/vSX3jHroOnPggArLZiVQjG3crGcV9rePwo8Wzwilj8
RgMNPARW6OlKRVSNJTvxvUdQ3G9plrnq0EuvezF27YnNJoptu6XsyaIlGX7wQaEq
Krw5agrbx/8FzH6kvXuE5jD8PwNVKwstML+uN1T+NSBncE88IiZxH0Fp0E2LnBxP
VCeR4NTQeLdXk15O2c3lQ5s9SN0vHeUNKy53myjU1AodwjsQ40BQjwd0z7d8NbYu
1gyH7wMmRvJG39KMVSaQgVwG7WA6HvrKKnydLWG5tVdUA0U7wiUHrFwIprXK/TNG
hSuPpI/pmCI1kdRRRgip+Z7yIWmZt5MnaRDADnZ3nA8+bznl5Uo6kvLROQ==
=CYK3
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
- Fix a bug where AVIC is incorrectly inhibited when running with
x2AVIC disabled via module param (or on a system without x2AVIC)
- Fix a dangling device posted IRQs bug by explicitly checking if the
irqfd is still active (on the list) when handling an eventfd signal,
instead of zeroing the irqfd's routing information when the irqfd is
deassigned.
Zeroing the irqfd's routing info causes arm64 and x86's to not
disable posting for the IRQ (kvm_arch_irq_bypass_del_producer() looks
for an MSI), incorrectly leaving the IRQ in posted mode (and leading
to use-after-free and memory leaks on AMD in particular).
This is both the most pressing and scariest, but it's been in -next
for a while.
- Disable FORTIFY_SOURCE for KVM selftests to prevent the compiler from
generating calls to the checked versions of memset() and friends,
which leads to unexpected page faults in guest code due e.g.
__memset_chk@plt not being resolved.
- Explicitly configure the supported XSS capabilities from within
{svm,vmx}_set_cpu_caps() to fix a bug where VMX will compute the
reference VMCS configuration with SHSTK and IBT enabled, but then
compute each CPUs local config with SHSTK and IBT disabled if not all
CET xfeatures are enabled, e.g. if the kernel is built with
X86_KERNEL_IBT=n.
The mismatch in features results in differing nVMX setting, and
ultimately causes kvm-intel.ko to refuse to load with nested=1.
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: Explicitly configure supported XSS from {svm,vmx}_set_cpu_caps()
KVM: selftests: Add -U_FORTIFY_SOURCE to avoid some unpredictable test failures
KVM: x86: Assert that non-MSI doesn't have bypass vCPU when deleting producer
KVM: Don't clobber irqfd routing type when deassigning irqfd
KVM: SVM: Check vCPU ID against max x2AVIC ID if and only if x2AVIC is enabled
Merge updates of Intel thermal drivers for 6.20/7.0:
- Add Panther Lake, Wildcat Lake and Nova Lake processor IDs to the
list of supported processors in the intel_tcc_cooling thermal
driver (Srinivas Pandruvada)
- Drop unnecessary explicit driver data clearing on removal from the
intel_pch_thermal driver (Kaushlendra Kumar)
- Add support for "slow" workload type hints to the int340x
processor_thermal driver and enable it on the Panther Lake
platform (Srinivas Pandruvada)
- Use sysfs_emit{_at}() in sysfs show functions in Intel thermal
drivers (Thorsten Blum)
- Update the x86_pkg_temp_thermal driver to handle THERMAL_TEMP_INVALID
that can be passed to it via sysfs as expected (Rafael Wysocki)
- Drop a redundant local variable from the intel_tcc_cooling thermal
driver and fix a kerneldoc comment typo in the TCC library (Sumeet
Pawnikar)
* thermal-intel:
drivers: thermal: intel: tcc_cooling: Drop redundant local variable
thermal: intel: x86_pkg_temp_thermal: Handle invalid temperature
thermal: intel: Use sysfs_emit() in a sysfs show function
thermal: intel: fix typo "nagative" in comment for cpu argument
thermal: intel: int340x: Use sysfs_emit{_at}() in sysfs show functions
thermal: intel: selftests: workload_hint: Support slow workload hints
thermal: int340x: processor_thermal: Enable slow workload type hints
thermal: intel: intel_pch_thermal: Drop explicit driver data clearing
thermal: intel: intel_tcc_cooling: Add CPU models in the support list
- Fix a bug where AVIC is incorrectly inhibited when running with x2AVIC
disabled via module param (or on a system without x2AVIC).
- Fix a dangling device posted IRQs bug by explicitly checking if the irqfd is
still active (on the list) when handling an eventfd signal, instead of
zeroing the irqfd's routing information when the irqfd is deassigned.
Zeroing the irqfd's routing info causes arm64 and x86's to not disable
posting for the IRQ (kvm_arch_irq_bypass_del_producer() looks for an MSI),
incorrectly leaving the IRQ in posted mode (and leading to use-after-free
and memory leaks on AMD in particular).
- Disable FORTIFY_SOURCE for KVM selftests to prevent the compiler from
generating calls to the checked versions of memset() and friends, which
leads to unexpected page faults in guest code due e.g. __memset_chk@plt
not being resolved.
- Explicitly configure the support XSS from within {svm,vmx}_set_cpu_caps() to
fix a bug where VMX will compute the reference VMCS configuration with SHSTK
and IBT enabled, but then compute each CPUs local config with SHSTK and IBT
disabled if not all CET xfeatures are enabled, e.g. if the kernel is built
with X86_KERNEL_IBT=n. The mismatch in features results in differing nVMX
setting, and ultimately causes kvm-intel.ko to refuse to load with nested=1.
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEKTobbabEP7vbhhN9OlYIJqCjN/0FAml9aGcACgkQOlYIJqCj
N/2BCw/9E4XyIIpbMJRk1xNBt+dBslBSggzmb6utXhucn0NaO1pKg9fEoqg6bfic
OP4Z+UUV8v4lPswVTob/Iq7L5VqvSPq0wa1//YuzxIce4pl5om7zO7RDFnDS47+w
8367jcmKDzGBKM9KfQN+J5xBYylh82fmd3FtI0212yS6HMOtf9DDioyUz0FXri+s
k1FWssxV2F9k9qp3qfAwqhj/fCSfVBeEaVKoJY6ep/kQPaLMemuFyrPVXxuWxw1Y
4udk0idjzrsDuln6fNvgV281Z2o6ScDMhvouRJZOo8d3njwaoJIgRBbGobTcuRGl
ULHZlilyg14+a8/25TN02SGbDaEZalHXced7F8Y5XLtCsea4ZxzjB4DVwPaKG6Kb
/465mH/lepdTxmelPFvhhA2th+Ku4o1hfCesYFRckO5jhOU8+EaXT3SW46+NLIAY
uXtx0BcVPmBqNPn9Zt82N+9WB/MEVLenTuvhkHW14ON3isVPDrUUPmH1kpoyZ/Uq
6DWmnunTmeWgS2wk3zuEsXWpxK6ko+wK2E8sUIDQiYIGSPTdIjlZMfHNHMicYrGL
b2vQPw/7Jb1NXy0Ek3CYcZes/s2crYDqWcRsg1jFP2INFXytOlzFrBS5bER4ZZVH
JB3UNItHKUcFdOk96wXxVxKXyjjeyBrWWH8Gu+T0ERPNl7Tn54c=
=O9hx
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-fixes-6.19-rc8' of https://github.com/kvm-x86/linux into HEAD
Final KVM fixes for 6.19:
- Fix a bug where AVIC is incorrectly inhibited when running with x2AVIC
disabled via module param (or on a system without x2AVIC).
- Fix a dangling device posted IRQs bug by explicitly checking if the irqfd is
still active (on the list) when handling an eventfd signal, instead of
zeroing the irqfd's routing information when the irqfd is deassigned.
Zeroing the irqfd's routing info causes arm64 and x86's to not disable
posting for the IRQ (kvm_arch_irq_bypass_del_producer() looks for an MSI),
incorrectly leaving the IRQ in posted mode (and leading to use-after-free
and memory leaks on AMD in particular).
This is both the most pressing and scariest, but it's been in -next for
a while.
- Disable FORTIFY_SOURCE for KVM selftests to prevent the compiler from
generating calls to the checked versions of memset() and friends, which
leads to unexpected page faults in guest code due e.g. __memset_chk@plt
not being resolved.
- Explicitly configure the support XSS from within {svm,vmx}_set_cpu_caps() to
fix a bug where VMX will compute the reference VMCS configuration with SHSTK
and IBT enabled, but then compute each CPUs local config with SHSTK and IBT
disabled if not all CET xfeatures are enabled, e.g. if the kernel is built
with X86_KERNEL_IBT=n. The mismatch in features results in differing nVMX
setting, and ultimately causes kvm-intel.ko to refuse to load with nested=1.
We had a few patches in this area and no explicit coverage so far.
The test case covers the scenario addressed by the previous fix;
reusing the existing udpgro_fwd.sh script to leverage part of the
of the virtual network setup, even if such script is possibly not
a perfect fit.
Note that the mentioned script already contains several shellcheck
violation; this patch does not fix the existing code, just avoids
adding more issues in the new one.
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Link: https://patch.msgid.link/768ca132af81e83856e34d3105b86c37e566a7ad.1770032084.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now bpf_timer can be used in tracepoints, so these tests are no longer
relevant.
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20260201025403.66625-9-alexei.starovoitov@gmail.com
Add stress tests for BPF timers that run in NMI context using perf_event
programs attached to PERF_COUNT_HW_CPU_CYCLES.
The tests cover three scenarios:
- nmi_race: Tests concurrent timer start and async cancel operations
- nmi_update: Tests updating a map element (effectively deleting and
inserting new for array map) from within a timer callback
- nmi_cancel: Tests timer self-cancellation attempt.
A common test_common() helper is used to share timer setup logic across
all test modes.
The tests spawn multiple threads in a child process to generate
perf events, which trigger the BPF programs in NMI context. Hit counters
verify that the NMI code paths were actually exercised.
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20260201025403.66625-8-alexei.starovoitov@gmail.com
Refactor timer selftests, extracting stress test into a separate test.
This makes it easier to debug test failures and allows to extend.
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20260201025403.66625-5-alexei.starovoitov@gmail.com
Add a selftest to ensure BPF stream functions can now be called
while holding a lock.
Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260203180424.14057-5-emil@etsalapatis.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Test that two registers with their id=0 (unlinked) in the cached state
can be mapped to a single id (linked) in the current state.
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Link: https://lore.kernel.org/r/20260203165102.2302462-6-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Scalar register IDs are used by the verifier to track relationships
between registers and enable bounds propagation across those
relationships. Once an ID becomes singular (i.e. only a single
register/stack slot carries it), it can no longer contribute to bounds
propagation and effectively becomes stale. The previous commit makes the
verifier clear such ids before caching the state.
When comparing the current and cached states for pruning, these stale
IDs can cause technically equivalent states to be considered different
and thus prevent pruning.
For example, in the selftest added in the next commit, two registers -
r6 and r7 are not linked to any other registers and get cached with
id=0, in the current state, they are both linked to each other with
id=A. Before this commit, check_scalar_ids would give temporary ids to
r6 and r7 (say tid1 and tid2) and then check_ids() would map tid1->A,
and when it would see tid2->A, it would not consider these state
equivalent.
Relax scalar ID equivalence by treating rold->id == 0 as "independent":
if the old state did not rely on any ID relationships for a register,
then any ID/linking present in the current state only adds constraints
and is always safe to accept for pruning. Implement this by returning
true immediately in check_scalar_ids() when old_id == 0.
Maintain correctness for the opposite direction (old_id != 0 && cur_id
== 0) by still allocating a temporary ID for cur_id == 0. This avoids
incorrectly allowing multiple independent current registers (id==0) to
satisfy a single linked old ID during mapping.
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Link: https://lore.kernel.org/r/20260203165102.2302462-5-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Add a new kselftest to verify that the total_bw value in
/sys/kernel/debug/sched/debug remains consistent across all CPUs
under different sched_ext BPF program states:
1. Before a BPF scheduler is loaded
2. While a BPF scheduler is loaded and active
3. After a BPF scheduler is unloaded
The test runs CPU stress threads to ensure DL server bandwidth
values stabilize before checking consistency. This helps catch
potential issues with DL server bandwidth accounting during
sched_ext transitions.
Co-developed-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/20260126100050.3854740-8-arighi@nvidia.com
Add a selftest to validate the correct behavior of the deadline server
for the ext_sched_class.
Co-developed-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Tested-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/20260126100050.3854740-7-arighi@nvidia.com
Remove test_generic_01.sh since block layer may reorder I/O, making
the test prone to false positives. Apply the improvements to
test_generic_02.sh instead, which supposes for covering ublk dispatch
io order.
Rework test_generic_02 to verify that ublk dispatch doesn't reorder I/O
by comparing request start order with completion order using bpftrace.
The bpftrace script now:
- Tracks each request's start sequence number in a map keyed by sector
- On completion, verifies the request's start order matches expected
completion order
- Reports any out-of-order completions detected
The test script:
- Wait bpftrace BEGIN code block is run
- Pins fio to CPU 0 for deterministic behavior
- Uses block_io_start and block_rq_complete tracepoints
- Checks bpftrace output for reordering errors
Reported-and-tested-by: Alexander Atanasov <alex@zazolabs.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
When running tests in parallel with high JOBS count (e.g., JOBS=64),
the existing timeouts can be insufficient due to system load:
- Increase state wait loops from 20/50 to 100 iterations in
_recover_ublk_dev(), __ublk_quiesce_dev(), and __ublk_kill_daemon()
to handle slower state transitions under heavy load
- Add --timeout=20 to udevadm settle calls to prevent indefinite
hangs when udev event queue is overwhelmed by rapid device
creation/deletion
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Linus Torvalds