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30bbcb44707a97fcb62246bebc8b413b5ab293f8
49381 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
30bbcb4470 |
Merge tag 'linux_kselftest-kunit-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
- New parameterized test features
KUnit parameterized tests supported two primary methods for getting
parameters:
- Defining custom logic within a generate_params() function.
- Using the KUNIT_ARRAY_PARAM() and KUNIT_ARRAY_PARAM_DESC() macros
with a pre-defined static array and passing the created
*_gen_params() to KUNIT_CASE_PARAM().
These methods present limitations when dealing with dynamically
generated parameter arrays, or in scenarios where populating
parameters sequentially via generate_params() is inefficient or
overly complex.
These limitations are fixed with a parameterized test method
- Fix issues in kunit build artifacts cleanup
- Fix parsing skipped test problem in kselftest framework
- Enable PCI on UML without triggering WARN()
- a few other fixes and adds support for new configs such as MIPS
* tag 'linux_kselftest-kunit-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: Extend kconfig help text for KUNIT_UML_PCI
rust: kunit: allow `cfg` on `test`s
kunit: qemu_configs: Add MIPS configurations
kunit: Enable PCI on UML without triggering WARN()
Documentation: kunit: Document new parameterized test features
kunit: Add example parameterized test with direct dynamic parameter array setup
kunit: Add example parameterized test with shared resource management using the Resource API
kunit: Enable direct registration of parameter arrays to a KUnit test
kunit: Pass parameterized test context to generate_params()
kunit: Introduce param_init/exit for parameterized test context management
kunit: Add parent kunit for parameterized test context
kunit: tool: Accept --raw_output=full as an alias of 'all'
kunit: tool: Parse skipped tests from kselftest.h
kunit: Always descend into kunit directory during build
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Linus Torvalds
|
991053178e |
Merge tag 'pm-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"The majority of these are cpufreq changes, which has been a recurring
pattern for a few recent cycles.
Those changes include new hardware support (AN7583 SoC support in the
airoha cpufreq driver, ipq5424 support in the qcom-nvmem cpufreq
driver, MT8196 support in the mediatek cpufreq driver, AM62D2 support
in the ti cpufreq driver), DT bindings and Rust code updates, cleanups
of the core and governors, and multiple driver fixes and cleanups.
Beyond that, there are hibernation fixes (some remaining 6.16 cycle
fallout and an issue related to hybrid suspend in the amdgpu driver),
cleanups of the PM core code, runtime PM documentation update, cpuidle
and power capping cleanups, and tooling updates.
Specifics:
- Rearrange variable declarations involving __free() in the cpufreq
core and intel_pstate driver to follow common coding style (Rafael
Wysocki)
- Fix object lifecycle issue in update_qos_request(), rearrange freq
QoS updates using __free(), and adjust frequency percentage
computations in the intel_pstate driver (Rafael Wysocki)
- Update intel_pstate to allow it to enable HWP without EPP if the
new DEC (Dynamic Efficiency Control) HW feature is enabled (Rafael
Wysocki)
- Use on_each_cpu_mask() in drv_write() in the ACPI cpufreq driver to
simplify the code (Rafael Wysocki)
- Use likely() optimization in intel_pstate_sample() (Yaxiong Tian)
- Remove dead EPB-related code from intel_pstate (Srinivas
Pandruvada)
- Use scope-based cleanup for cpufreq policy references in multiple
cpufreq drivers (Zihuan Zhang)
- Avoid calling get_governor() for the first policy in the cpufreq
core to simplify the initial policy path (Zihuan Zhang)
- Clean up the cpufreq core in multiple places (Zihuan Zhang)
- Use int type to store negative error codes in the cpufreq core and
update the speedstep-lib to use int for error codes (Qianfeng Rong)
- Update the efficient idle check for Intel extended Families in the
ondemand cpufreq governor (Sohil Mehta)
- Replace sscanf() with kstrtouint() in the conservative cpufreq
governor (Kaushlendra Kumar)
- Rename CpumaskVar::as[_mut]_ref to from_raw[_mut] in the cpumask
Rust code and mark CpumaskVar as transparent (Alice Ryhl, Baptiste
Lepers)
- Update ARef and AlwaysRefCounted imports from sync::aref in the OPP
Rust code (Shankari Anand)
- Add support for AN7583 SoC to the airoha cpufreq driver (Christian
Marangi)
- Enable cpufreq for ipq5424 in the qcom-nvmem cpufreq driver (Md
Sadre Alam)
- Add support for MT8196 to the mediatek-hw cpufreq driver, refactor
that driver and add mediatek,mt8196-cpufreq-hw DT binding (Nicolas
Frattaroli)
- Avoid redundant conditions in the mediatek cpufreq driver (Liao
Yuanhong)
- Add support for AM62D2 to the ti cpufreq driver and blocklist
ti,am62d2 SoC in dt-platdev (Paresh Bhagat)
- Support more speed grades on AM62Px SoC in the ti cpufreq driver,
allow all silicon revisions to support OPPs in it, and fix
supported hardware for 1GHz OPP (Judith Mendez)
- Add QCS615 compatible to DT bindings for cpufreq-qcom-hw (Taniya
Das)
- Minor assorted updates of the scmi, longhaul, CPPC, and armada-37xx
cpufreq drivers (Akhilesh Patil, BowenYu, Dennis Beier, and Florian
Fainelli)
- Remove outdated cpufreq-dt.txt (Frank Li)
- Fix python gnuplot package names in the amd_pstate_tracer utility
(Kuan-Wei Chiu)
- Saravana Kannan will maintain the virtual-cpufreq driver (Saravana
Kannan)
- Prevent CPU capacity updates after registering a perf domain from
failing on a first CPU that is not present (Christian Loehle)
- Add support for the cases in which frequency alone is not
sufficient to uniquely identify an OPP (Krishna Chaitanya Chundru)
- Use to_result() for OPP error handling in Rust (Onur Özkan)
- Add support for LPDDR5 on Rockhip RK3588 SoC to rockchip-dfi
devfreq driver (Nicolas Frattaroli)
- Fix an issue where DDR cycle counts on RK3588/RK3528 with LPDDR4(X)
are reported as half by adding a cycle multiplier to the DFI driver
in rockchip-dfi devfreq-event driver (Nicolas Frattaroli)
- Fix missing error pointer dereference check of regulator instance
in the mtk-cci devfreq driver probe and remove a redundant
condition from an if () statement in that driver (Dan Carpenter,
Liao Yuanhong)
- Fail cpuidle device registration if there is one already to avoid
sysfs-related issues (Rafael Wysocki)
- Use sysfs_emit()/sysfs_emit_at() instead of sprintf()/scnprintf()
in cpuidle (Vivek Yadav)
- Fix device and OF node leaks at probe in the qcom-spm cpuidle
driver and drop unnecessary initialisations from it (Johan Hovold)
- Remove unnecessary address-of operators from the intel_idle cpuidle
driver (Kaushlendra Kumar)
- Rearrange main loop in menu_select() to make the code in that
funtion easier to follow (Rafael Wysocki)
- Convert values in microseconds to ktime using us_to_ktime() where
applicable in the intel_idle power capping driver (Xichao Zhao)
- Annotate loops walking device links in the power management core
code as _srcu and add macros for walking device links to reduce the
likelihood of coding mistakes related to them (Rafael Wysocki)
- Document time units for *_time functions in the runtime PM API
(Brian Norris)
- Clear power.must_resume in noirq suspend error path to avoid
resuming a dependant device under a suspended parent or supplier
(Rafael Wysocki)
- Fix GFP mask handling during hybrid suspend and make the amdgpu
driver handle hybrid suspend correctly (Mario Limonciello, Rafael
Wysocki)
- Fix GFP mask handling after aborted hibernation in platform mode
and combine exit paths in power_down() to avoid code duplication
(Rafael Wysocki)
- Use vmalloc_array() and vcalloc() in the hibernation core to avoid
open-coded size computations (Qianfeng Rong)
- Fix typo in hibernation core code comment (Li Jun)
- Call pm_wakeup_clear() in the same place where other functions that
do bookkeeping prior to suspend_prepare() are called (Samuel Wu)
- Fix and clean up the x86_energy_perf_policy utility and update its
documentation (Len Brown, Kaushlendra Kumar)
- Fix incorrect sorting of PMT telemetry in turbostat (Kaushlendra
Kumar)
- Fix incorrect size in cpuidle_state_disable() and the error return
value of cpupower_write_sysfs() in cpupower (Kaushlendra Kumar)"
* tag 'pm-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (86 commits)
PM: hibernate: Combine return paths in power_down()
PM: hibernate: Restrict GFP mask in power_down()
PM: hibernate: Fix pm_hibernation_mode_is_suspend() build breakage
PM: runtime: Documentation: ABI: Document time units for *_time
tools/power x86_energy_perf_policy.8: Emphasize preference for SW interfaces
tools/power x86_energy_perf_policy: Add make snapshot target
tools/power x86_energy_perf_policy: Prefer driver HWP limits
tools/power x86_energy_perf_policy: EPB access is only via sysfs
tools/power x86_energy_perf_policy: Prepare for MSR/sysfs refactoring
tools/power x86_energy_perf_policy: Enhance HWP enable
tools/power x86_energy_perf_policy: Enhance HWP enabled check
tools/power x86_energy_perf_policy: Fix incorrect fopen mode usage
tools/power turbostat: Fix incorrect sorting of PMT telemetry
drm/amd: Fix hybrid sleep
PM: hibernate: Add pm_hibernation_mode_is_suspend()
PM: hibernate: Fix hybrid-sleep
tools/cpupower: Fix incorrect size in cpuidle_state_disable()
tools/power/x86/amd_pstate_tracer: Fix python gnuplot package names
cpufreq: Replace pointer subtraction with iteration macro
cpuidle: Fail cpuidle device registration if there is one already
...
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Linus Torvalds
|
eb3289fc47 |
Merge tag 'driver-core-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"Auxiliary:
- Drop call to dev_pm_domain_detach() in auxiliary_bus_probe()
- Optimize logic of auxiliary_match_id()
Rust:
- Auxiliary:
- Use primitive C types from prelude
- DebugFs:
- Add debugfs support for simple read/write files and custom
callbacks through a File-type-based and directory-scope-based
API
- Sample driver code for the File-type-based API
- Sample module code for the directory-scope-based API
- I/O:
- Add io::poll module and implement Rust specific
read_poll_timeout() helper
- IRQ:
- Implement support for threaded and non-threaded device IRQs
based on (&Device<Bound>, IRQ number) tuples (IrqRequest)
- Provide &Device<Bound> cookie in IRQ handlers
- PCI:
- Support IRQ requests from IRQ vectors for a specific
pci::Device<Bound>
- Implement accessors for subsystem IDs, revision, devid and
resource start
- Provide dedicated pci::Vendor and pci::Class types for vendor
and class ID numbers
- Implement Display to print actual vendor and class names; Debug
to print the raw ID numbers
- Add pci::DeviceId::from_class_and_vendor() helper
- Use primitive C types from prelude
- Various minor inline and (safety) comment improvements
- Platform:
- Support IRQ requests from IRQ vectors for a specific
platform::Device<Bound>
- Nova:
- Use pci::DeviceId::from_class_and_vendor() to avoid probing
non-display/compute PCI functions
- Misc:
- Add helper for cpu_relax()
- Update ARef import from sync::aref
sysfs:
- Remove bin_attrs_new field from struct attribute_group
- Remove read_new() and write_new() from struct bin_attribute
Misc:
- Document potential race condition in get_dev_from_fwnode()
- Constify node_group argument in software node registration
functions
- Fix order of kernel-doc parameters in various functions
- Set power.no_pm flag for faux devices
- Set power.no_callbacks flag along with the power.no_pm flag
- Constify the pmu_bus bus type
- Minor spelling fixes"
* tag 'driver-core-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (43 commits)
rust: pci: display symbolic PCI vendor names
rust: pci: display symbolic PCI class names
rust: pci: fix incorrect platform reference in PCI driver probe doc comment
rust: pci: fix incorrect platform reference in PCI driver unbind doc comment
perf: make pmu_bus const
samples: rust: Add scoped debugfs sample driver
rust: debugfs: Add support for scoped directories
samples: rust: Add debugfs sample driver
rust: debugfs: Add support for callback-based files
rust: debugfs: Add support for writable files
rust: debugfs: Add support for read-only files
rust: debugfs: Add initial support for directories
driver core: auxiliary bus: Optimize logic of auxiliary_match_id()
driver core: auxiliary bus: Drop dev_pm_domain_detach() call
driver core: Fix order of the kernel-doc parameters
driver core: get_dev_from_fwnode(): document potential race
drivers: base: fix "publically"->"publicly"
driver core/PM: Set power.no_callbacks along with power.no_pm
driver core: faux: Set power.no_pm for faux devices
rust: pci: inline several tiny functions
...
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Linus Torvalds
|
ae28ed4578 |
Merge tag 'bpf-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov: - Support pulling non-linear xdp data with bpf_xdp_pull_data() kfunc (Amery Hung) Applied as a stable branch in bpf-next and net-next trees. - Support reading skb metadata via bpf_dynptr (Jakub Sitnicki) Also a stable branch in bpf-next and net-next trees. - Enforce expected_attach_type for tailcall compatibility (Daniel Borkmann) - Replace path-sensitive with path-insensitive live stack analysis in the verifier (Eduard Zingerman) This is a significant change in the verification logic. More details, motivation, long term plans are in the cover letter/merge commit. - Support signed BPF programs (KP Singh) This is another major feature that took years to materialize. Algorithm details are in the cover letter/marge commit - Add support for may_goto instruction to s390 JIT (Ilya Leoshkevich) - Add support for may_goto instruction to arm64 JIT (Puranjay Mohan) - Fix USDT SIB argument handling in libbpf (Jiawei Zhao) - Allow uprobe-bpf program to change context registers (Jiri Olsa) - Support signed loads from BPF arena (Kumar Kartikeya Dwivedi and Puranjay Mohan) - Allow access to union arguments in tracing programs (Leon Hwang) - Optimize rcu_read_lock() + migrate_disable() combination where it's used in BPF subsystem (Menglong Dong) - Introduce bpf_task_work_schedule*() kfuncs to schedule deferred execution of BPF callback in the context of a specific task using the kernel’s task_work infrastructure (Mykyta Yatsenko) - Enforce RCU protection for KF_RCU_PROTECTED kfuncs (Kumar Kartikeya Dwivedi) - Add stress test for rqspinlock in NMI (Kumar Kartikeya Dwivedi) - Improve the precision of tnum multiplier verifier operation (Nandakumar Edamana) - Use tnums to improve is_branch_taken() logic (Paul Chaignon) - Add support for atomic operations in arena in riscv JIT (Pu Lehui) - Report arena faults to BPF error stream (Puranjay Mohan) - Search for tracefs at /sys/kernel/tracing first in bpftool (Quentin Monnet) - Add bpf_strcasecmp() kfunc (Rong Tao) - Support lookup_and_delete_elem command in BPF_MAP_STACK_TRACE (Tao Chen) * tag 'bpf-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (197 commits) libbpf: Replace AF_ALG with open coded SHA-256 selftests/bpf: Add stress test for rqspinlock in NMI selftests/bpf: Add test case for different expected_attach_type bpf: Enforce expected_attach_type for tailcall compatibility bpftool: Remove duplicate string.h header bpf: Remove duplicate crypto/sha2.h header libbpf: Fix error when st-prefix_ops and ops from differ btf selftests/bpf: Test changing packet data from kfunc selftests/bpf: Add stacktrace map lookup_and_delete_elem test case selftests/bpf: Refactor stacktrace_map case with skeleton bpf: Add lookup_and_delete_elem for BPF_MAP_STACK_TRACE selftests/bpf: Fix flaky bpf_cookie selftest selftests/bpf: Test changing packet data from global functions with a kfunc bpf: Emit struct bpf_xdp_sock type in vmlinux BTF selftests/bpf: Task_work selftest cleanup fixes MAINTAINERS: Delete inactive maintainers from AF_XDP bpf: Mark kfuncs as __noclone selftests/bpf: Add kprobe multi write ctx attach test selftests/bpf: Add kprobe write ctx attach test selftests/bpf: Add uprobe context ip register change test ... |
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Linus Torvalds
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4b81e2eb9e |
Merge tag 'timers-vdso-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull VDSO updates from Thomas Gleixner: - Further consolidation of the VDSO infrastructure and the common data store - Simplification of the related Kconfig logic - Improve the VDSO selftest suite * tag 'timers-vdso-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: selftests: vDSO: Drop vdso_test_clock_getres selftests: vDSO: vdso_test_abi: Add tests for clock_gettime64() selftests: vDSO: vdso_test_abi: Test CPUTIME clocks selftests: vDSO: vdso_test_abi: Use explicit indices for name array selftests: vDSO: vdso_test_abi: Drop clock availability tests selftests: vDSO: vdso_test_abi: Use ksft_finished() selftests: vDSO: vdso_test_abi: Correctly skip whole test with missing vDSO selftests: vDSO: Fix -Wunitialized in powerpc VDSO_CALL() wrapper vdso: Add struct __kernel_old_timeval forward declaration to gettime.h vdso: Gate VDSO_GETRANDOM behind HAVE_GENERIC_VDSO vdso: Drop Kconfig GENERIC_VDSO_TIME_NS vdso: Drop Kconfig GENERIC_VDSO_DATA_STORE vdso: Drop kconfig GENERIC_COMPAT_VDSO vdso: Drop kconfig GENERIC_VDSO_32 riscv: vdso: Untangle Kconfig logic time: Build generic update_vsyscall() only with generic time vDSO vdso/gettimeofday: Remove !CONFIG_TIME_NS stubs vdso: Move ENABLE_COMPAT_VDSO from core to arm64 ARM: VDSO: Remove cntvct_ok global variable vdso/datastore: Gate time data behind CONFIG_GENERIC_GETTIMEOFDAY |
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Linus Torvalds
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70de5572a8 |
Merge tag 'timers-clocksource-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull clocksource updates from Thomas Gleixner: - Further preparations for modular clocksource/event drivers - The usual device tree updates to support new chip variants and the related changes to thise drivers - Avoid a 64-bit division in the TEGRA186 driver, which caused a build fail on 32-bit machines. - Small fixes, improvements and cleanups all over the place * tag 'timers-clocksource-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits) dt-bindings: timer: exynos4210-mct: Add compatible for ARTPEC-9 SoC clocksource/drivers/sh_cmt: Split start/stop of clock source and events clocksource/drivers/clps711x: Fix resource leaks in error paths clocksource/drivers/arm_global_timer: Add auto-detection for initial prescaler values clocksource/drivers/ingenic-sysost: Convert from round_rate() to determine_rate() clocksource/drivers/timer-tegra186: Don't print superfluous errors clocksource/drivers/timer-rtl-otto: Simplify documentation clocksource/drivers/timer-rtl-otto: Do not interfere with interrupts clocksource/drivers/timer-rtl-otto: Drop set_counter function clocksource/drivers/timer-rtl-otto: Work around dying timers clocksource/drivers/timer-ti-dm : Capture functionality for OMAP DM timer clocksource/drivers/arm_arch_timer_mmio: Add MMIO clocksource clocksource/drivers/arm_arch_timer_mmio: Switch over to standalone driver clocksource/drivers/arm_arch_timer: Add standalone MMIO driver ACPI: GTDT: Generate platform devices for MMIO timers clocksource/drivers/nxp-pit: Add NXP Automotive s32g2 / s32g3 support dt: bindings: fsl,vf610-pit: Add compatible for s32g2 and s32g3 clocksource/drivers/vf-pit: Rename the VF PIT to NXP PIT clocksource/drivers/vf-pit: Unify the function name for irq ack clocksource/drivers/vf-pit: Consolidate calls to pit_*_disable/enable ... |
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Linus Torvalds
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c5448d46b3 |
Merge tag 'timers-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer core updates from Thomas Gleixner: - Address the inconsistent shutdown sequence of per CPU clockevents on CPU hotplug, which only removed it from the core but failed to invoke the actual device driver shutdown callback. This kept the timer active, which prevented power savings and caused pointless noise in virtualization. - Encapsulate the open coded access to the hrtimer clock base, which is a private implementation detail, so that the implementation can be changed without breaking a lot of usage sites. - Enhance the debug output of the clocksource watchdog to provide better information for analysis. - The usual set of cleanups and enhancements all over the place * tag 'timers-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time: Fix spelling mistakes in comments clocksource: Print durations for sync check unconditionally LoongArch: Remove clockevents shutdown call on offlining tick: Do not set device to detached state in tick_shutdown() hrtimer: Reorder branches in hrtimer_clockid_to_base() hrtimer: Remove hrtimer_clock_base:: Get_time hrtimer: Use hrtimer_cb_get_time() helper media: pwm-ir-tx: Avoid direct access to hrtimer clockbase ALSA: hrtimer: Avoid direct access to hrtimer clockbase lib: test_objpool: Avoid direct access to hrtimer clockbase sched/core: Avoid direct access to hrtimer clockbase timers/itimer: Avoid direct access to hrtimer clockbase posix-timers: Avoid direct access to hrtimer clockbase jiffies: Remove obsolete SHIFTED_HZ comment |
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Linus Torvalds
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c574fb2ed7 |
Merge tag 'locking-futex-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex updates from Thomas Gleixner:
"A set of updates for futexes and related selftests:
- Plug the ptrace_may_access() race against a concurrent exec() which
allows to pass the check before the target's process transition in
exec() by taking a read lock on signal->ext_update_lock.
- A large set of cleanups and enhancement to the futex selftests. The
bulk of changes is the conversion to the kselftest harness"
* tag 'locking-futex-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
selftest/futex: Fix spelling mistake "boundarie" -> "boundary"
selftests/futex: Remove logging.h file
selftests/futex: Drop logging.h include from futex_numa
selftests/futex: Refactor futex_numa_mpol with kselftest_harness.h
selftests/futex: Refactor futex_priv_hash with kselftest_harness.h
selftests/futex: Refactor futex_waitv with kselftest_harness.h
selftests/futex: Refactor futex_requeue with kselftest_harness.h
selftests/futex: Refactor futex_wait with kselftest_harness.h
selftests/futex: Refactor futex_wait_private_mapped_file with kselftest_harness.h
selftests/futex: Refactor futex_wait_unitialized_heap with kselftest_harness.h
selftests/futex: Refactor futex_wait_wouldblock with kselftest_harness.h
selftests/futex: Refactor futex_wait_timeout with kselftest_harness.h
selftests/futex: Refactor futex_requeue_pi_signal_restart with kselftest_harness.h
selftests/futex: Refactor futex_requeue_pi_mismatched_ops with kselftest_harness.h
selftests/futex: Refactor futex_requeue_pi with kselftest_harness.h
selftests: kselftest: Create ksft_print_dbg_msg()
futex: Don't leak robust_list pointer on exec race
selftest/futex: Compile also with libnuma < 2.0.16
selftest/futex: Reintroduce "Memory out of range" numa_mpol's subtest
selftest/futex: Make the error check more precise for futex_numa_mpol
...
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Linus Torvalds
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d8de3685f1 |
Merge tag 'smp-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull smp doc fixlet from Thomas Gleixner: "An update of the stale smp_call_function_many() documentation to bring it back in sync with the actual implementation" * tag 'smp-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: smp: Fix up and expand the smp_call_function_many() kerneldoc |
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Linus Torvalds
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3b2074c77d |
Merge tag 'irq-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq core updates from Thomas Gleixner:
"A set of updates for the interrupt core subsystem:
- Introduce irq_chip_[startup|shutdown]_parent() to prepare for
addressing a few short comings in the PCI/MSI interrupt subsystem.
It allows to utilize the interrupt chip startup/shutdown callbacks
for initializing the interrupt chip hierarchy properly on certain
RISCV implementations and provides a mechanism to reduce the
overhead of masking and unmasking PCI/MSI interrupts during
operation when the underlying MSI provider can mask the interrupt.
The actual usage comes with the interrupt driver pull request.
- Add generic error handling for devm_request_*_irq()
This allows to remove the zoo of random error printk's all over the
usage sites.
- Add a mechanism to warn about long-running interrupt handlers
Long running interrupt handlers can introduce latencies and
tracking them down is a tedious task. The tracking has to be
enabled with a threshold on the kernel command line and utilizes a
static branch to remove the overhead when disabled.
- Update and extend the selftests which validate the CPU hotplug
interrupt migration logic
- Allow dropping the per CPU softirq lock on PREEMPT_RT kernels,
which causes contention and latencies all over the place.
The serialization requirements have been pushed down into the
actual affected usage sites already.
- The usual small cleanups and improvements"
* tag 'irq-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
softirq: Allow to drop the softirq-BKL lock on PREEMPT_RT
softirq: Provide a handshake for canceling tasklets via polling
genirq/test: Ensure CPU 1 is online for hotplug test
genirq/test: Drop CONFIG_GENERIC_IRQ_MIGRATION assumptions
genirq/test: Depend on SPARSE_IRQ
genirq/test: Fail early if interrupt request fails
genirq/test: Factor out fake-virq setup
genirq/test: Select IRQ_DOMAIN
genirq/test: Fix depth tests on architectures with NOREQUEST by default.
genirq: Add support for warning on long-running interrupt handlers
genirq/devres: Add error handling in devm_request_*_irq()
genirq: Add irq_chip_(startup/shutdown)_parent()
genirq: Remove GENERIC_IRQ_LEGACY
|
||
|
Linus Torvalds
|
1d17e808cf |
Merge tag 'core-rseq-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull rseq updates from Thomas Gleixner:
"Two fixes for RSEQ:
- Protect the event mask modification against the membarrier() IPI as
otherwise the RmW operation is unprotected and events might be lost
- Fix the weak symbol reference in rseq selftests
The current weak RSEQ symbols definitions which were added to allow
static linkage are not working correctly as they effectively
re-define the glibc symbols leading to multiple versions of the
symbols when compiled with -fno-common.
Mark them as 'extern' to convert them from weak symbol definitions
to weak symbol references. That works with static and dynamic
linkage independent of -fcommon and -fno-common"
* tag 'core-rseq-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rseq/selftests: Use weak symbol reference, not definition, to link with glibc
rseq: Protect event mask against membarrier IPI
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||
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Linus Torvalds
|
e4dcbdff11 |
Merge tag 'perf-core-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull performance events updates from Ingo Molnar:
"Core perf code updates:
- Convert mmap() related reference counts to refcount_t. This is in
reaction to the recently fixed refcount bugs, which could have been
detected earlier and could have mitigated the bug somewhat (Thomas
Gleixner, Peter Zijlstra)
- Clean up and simplify the callchain code, in preparation for
sframes (Steven Rostedt, Josh Poimboeuf)
Uprobes updates:
- Add support to optimize usdt probes on x86-64, which gives a
substantial speedup (Jiri Olsa)
- Cleanups and fixes on x86 (Peter Zijlstra)
PMU driver updates:
- Various optimizations and fixes to the Intel PMU driver (Dapeng Mi)
Misc cleanups and fixes:
- Remove redundant __GFP_NOWARN (Qianfeng Rong)"
* tag 'perf-core-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (57 commits)
selftests/bpf: Fix uprobe_sigill test for uprobe syscall error value
uprobes/x86: Return error from uprobe syscall when not called from trampoline
perf: Skip user unwind if the task is a kernel thread
perf: Simplify get_perf_callchain() user logic
perf: Use current->flags & PF_KTHREAD|PF_USER_WORKER instead of current->mm == NULL
perf: Have get_perf_callchain() return NULL if crosstask and user are set
perf: Remove get_perf_callchain() init_nr argument
perf/x86: Print PMU counters bitmap in x86_pmu_show_pmu_cap()
perf/x86/intel: Add ICL_FIXED_0_ADAPTIVE bit into INTEL_FIXED_BITS_MASK
perf/x86/intel: Change macro GLOBAL_CTRL_EN_PERF_METRICS to BIT_ULL(48)
perf/x86: Add PERF_CAP_PEBS_TIMING_INFO flag
perf/x86/intel: Fix IA32_PMC_x_CFG_B MSRs access error
perf/x86/intel: Use early_initcall() to hook bts_init()
uprobes: Remove redundant __GFP_NOWARN
selftests/seccomp: validate uprobe syscall passes through seccomp
seccomp: passthrough uprobe systemcall without filtering
selftests/bpf: Fix uprobe syscall shadow stack test
selftests/bpf: Change test_uretprobe_regs_change for uprobe and uretprobe
selftests/bpf: Add uprobe_regs_equal test
selftests/bpf: Add optimized usdt variant for basic usdt test
...
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Linus Torvalds
|
6c7340a7a8 |
Merge tag 'sched-core-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Core scheduler changes:
- Make migrate_{en,dis}able() inline, to improve performance
(Menglong Dong)
- Move STDL_INIT() functions out-of-line (Peter Zijlstra)
- Unify the SCHED_{SMT,CLUSTER,MC} Kconfig (Peter Zijlstra)
Fair scheduling:
- Defer throttling to when tasks exit to user-space, to reduce the
chance & impact of throttle-preemption with held locks and other
resources (Aaron Lu, Valentin Schneider)
- Get rid of sched_domains_curr_level hack for tl->cpumask(), as the
warning was getting triggered on certain topologies (Peter
Zijlstra)
Misc cleanups & fixes:
- Header cleanups (Menglong Dong)
- Fix race in push_dl_task() (Harshit Agarwal)"
* tag 'sched-core-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Fix some typos in include/linux/preempt.h
sched: Make migrate_{en,dis}able() inline
rcu: Replace preempt.h with sched.h in include/linux/rcupdate.h
arch: Add the macro COMPILE_OFFSETS to all the asm-offsets.c
sched/fair: Do not balance task to a throttled cfs_rq
sched/fair: Do not special case tasks in throttled hierarchy
sched/fair: update_cfs_group() for throttled cfs_rqs
sched/fair: Propagate load for throttled cfs_rq
sched/fair: Get rid of throttled_lb_pair()
sched/fair: Task based throttle time accounting
sched/fair: Switch to task based throttle model
sched/fair: Implement throttle task work and related helpers
sched/fair: Add related data structure for task based throttle
sched: Unify the SCHED_{SMT,CLUSTER,MC} Kconfig
sched: Move STDL_INIT() functions out-of-line
sched/fair: Get rid of sched_domains_curr_level hack for tl->cpumask()
sched/deadline: Fix race in push_dl_task()
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Linus Torvalds
|
755fa5b4fb |
Merge tag 'cgroup-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo: - Extensive cpuset code cleanup and refactoring work with no functional changes: CPU mask computation logic refactoring, introducing new helpers, removing redundant code paths, and improving error handling for better maintainability. - A few bug fixes to cpuset including fixes for partition creation failures when isolcpus is in use, missing error returns, and null pointer access prevention in free_tmpmasks(). - Core cgroup changes include replacing the global percpu_rwsem with per-threadgroup rwsem when writing to cgroup.procs for better scalability, workqueue conversions to use WQ_PERCPU and system_percpu_wq to prepare for workqueue default switching from percpu to unbound, and removal of unused code including the post_attach callback. - New cgroup.stat.local time accounting feature that tracks frozen time duration. - Misc changes including selftests updates (new freezer time tests and backward compatibility fixes), documentation sync, string function safety improvements, and 64-bit division fixes. * tag 'cgroup-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (39 commits) cpuset: remove is_prs_invalid helper cpuset: remove impossible warning in update_parent_effective_cpumask cpuset: remove redundant special case for null input in node mask update cpuset: fix missing error return in update_cpumask cpuset: Use new excpus for nocpu error check when enabling root partition cpuset: fix failure to enable isolated partition when containing isolcpus Documentation: cgroup-v2: Sync manual toctree cpuset: use partition_cpus_change for setting exclusive cpus cpuset: use parse_cpulist for setting cpus.exclusive cpuset: introduce partition_cpus_change cpuset: refactor cpus_allowed_validate_change cpuset: refactor out validate_partition cpuset: introduce cpus_excl_conflict and mems_excl_conflict helpers cpuset: refactor CPU mask buffer parsing logic cpuset: Refactor exclusive CPU mask computation logic cpuset: change return type of is_partition_[in]valid to bool cpuset: remove unused assignment to trialcs->partition_root_state cpuset: move the root cpuset write check earlier cgroup/cpuset: Remove redundant rcu_read_lock/unlock() in spin_lock cgroup: Remove redundant rcu_read_lock/unlock() in spin_lock ... |
||
|
Linus Torvalds
|
77fc3f6696 |
Merge tag 'wq-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue updates from Tejun Heo: - WQ_PERCPU was added to remaining alloc_workqueue() users and system_wq usage was replaced with system_percpu_wq and system_unbound_wq with system_dfl_wq. These are equivalent conversions with no functional changes, preparing for switching default to unbound workqueues from percpu. - A handshake mechanism was added for canceling BH workers to avoid live lock scenarios under PREEMPT_RT. - Unnecessary rcu_read_lock/unlock() calls were dropped in wq_watchdog_timer_fn() and workqueue_congested(). - Documentation was fixed to resolve texinfodocs warnings. * tag 'wq-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: fix texinfodocs warning for WQ_* flags reference workqueue: WQ_PERCPU added to alloc_workqueue users workqueue: replace use of system_wq with system_percpu_wq workqueue: replace use of system_unbound_wq with system_dfl_wq workqueue: Provide a handshake for canceling BH workers workqueue: Remove rcu_read_lock/unlock() in wq_watchdog_timer_fn() workqueue: Remove redundant rcu_read_lock/unlock() in workqueue_congested() |
||
|
Linus Torvalds
|
a23cd25bae |
Merge tag 'sched_ext-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext updates from Tejun Heo: - Code organization cleanup. Separate internal types and accessors to ext_internal.h to reduce the size of ext.c and improve maintainability. - Prepare for cgroup sub-scheduler support by adding @sch parameter to various functions and helpers, reorganizing scheduler instance handling, and dropping obsolete helpers like scx_kf_exit() and kf_cpu_valid(). - Add new scx_bpf_cpu_curr() and scx_bpf_locked_rq() BPF helpers to provide safer access patterns with proper RCU protection. scx_bpf_cpu_rq() is deprecated with warnings due to potential race conditions. - Improve debugging with migration-disabled counter in error state dumps, SCX_EFLAG_INITIALIZED flag, bitfields for warning flags, and other enhancements to help diagnose issues. - Use cgroup_lock/unlock() for cgroup synchronization instead of scx_cgroup_rwsem based synchronization. This is simpler and allows enable/disable paths to synchronize against cgroup changes independent of the CPU controller. - rhashtable_lookup() replacement to avoid redundant RCU locking was reverted due to RCU usage warnings. Will be redone once rhashtable is updated to use rcu_dereference_all(). - Other misc updates and fixes including bypass handling improvements, scx_task_iter_relock() improvements, tools/sched_ext updates, and compatibility helpers. * tag 'sched_ext-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (28 commits) Revert "sched_ext: Use rhashtable_lookup() instead of rhashtable_lookup_fast()" sched_ext: Misc updates around scx_sched instance pointer sched_ext: Drop scx_kf_exit() and scx_kf_error() sched_ext: Add the @sch parameter to scx_dsq_insert_preamble/commit() sched_ext: Drop kf_cpu_valid() sched_ext: Add the @sch parameter to ext_idle helpers sched_ext: Add the @sch parameter to __bstr_format() sched_ext: Separate out scx_kick_cpu() and add @sch to it tools/sched_ext: scx_qmap: Make debug output quieter by default sched_ext: Make qmap dump operation non-destructive sched_ext: Add SCX_EFLAG_INITIALIZED to indicate successful ops.init() sched_ext: Use bitfields for boolean warning flags sched_ext: Fix stray scx_root usage in task_can_run_on_remote_rq() sched_ext: Improve SCX_KF_DISPATCH comment sched_ext: Use rhashtable_lookup() instead of rhashtable_lookup_fast() sched_ext: Verify RCU protection in scx_bpf_cpu_curr() sched_ext: Add migration-disabled counter to error state dump sched_ext: Fix NULL dereference in scx_bpf_cpu_rq() warning tools/sched_ext: Add compat helper for scx_bpf_cpu_curr() sched_ext: deprecation warn for scx_bpf_cpu_rq() ... |
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|
Linus Torvalds
|
56a0810d8c |
Merge tag 'audit-pr-20250926' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore: - Proper audit support for multiple LSMs As the audit subsystem predated the work to enable multiple LSMs, some additional work was needed to support logging the different LSM labels for the subjects/tasks and objects on the system. Casey's patches add new auxillary records for subjects and objects that convey the additional labels. - Ensure fanotify audit events are always generated Generally speaking security relevant subsystems always generate audit events, unless explicitly ignored. However, up to this point fanotify events had been ignored by default, but starting with this pull request fanotify follows convention and generates audit events by default. - Replace an instance of strcpy() with strscpy() - Minor indentation, style, and comment fixes * tag 'audit-pr-20250926' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit: audit: fix skb leak when audit rate limit is exceeded audit: init ab->skb_list earlier in audit_buffer_alloc() audit: add record for multiple object contexts audit: add record for multiple task security contexts lsm: security_lsmblob_to_secctx module selection audit: create audit_stamp structure audit: add a missing tab audit: record fanotify event regardless of presence of rules audit: fix typo in auditfilter.c comment audit: Replace deprecated strcpy() with strscpy() audit: fix indentation in audit_log_exit() |
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|
Linus Torvalds
|
417552999d |
Merge tag 'powerpc-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Madhavan Srinivasan:
- powerpc support for BPF arena and arena atomics
- Patches to switch to msi parent domain (per-device MSI domains)
- Add a lock contention tracepoint in the queued spinlock slowpath
- Fixes for underflow in pseries/powernv msi and pci paths
- Switch from legacy-of-mm-gpiochip dependency to platform driver
- Fixes for handling TLB misses
- Introduce support for powerpc papr-hvpipe
- Add vpa-dtl PMU driver for pseries platform
- Misc fixes and cleanups
Thanks to Aboorva Devarajan, Aditya Bodkhe, Andrew Donnellan, Athira
Rajeev, Cédric Le Goater, Christophe Leroy, Erhard Furtner, Gautam
Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Joe Lawrence,
Kajol Jain, Kienan Stewart, Linus Walleij, Mahesh Salgaonkar, Nam Cao,
Nicolas Schier, Nysal Jan K.A., Ritesh Harjani (IBM), Ruben Wauters,
Saket Kumar Bhaskar, Shashank MS, Shrikanth Hegde, Tejas Manhas, Thomas
Gleixner, Thomas Huth, Thorsten Blum, Tyrel Datwyler, and Venkat Rao
Bagalkote.
* tag 'powerpc-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (49 commits)
powerpc/pseries: Define __u{8,32} types in papr_hvpipe_hdr struct
genirq/msi: Remove msi_post_free()
powerpc/perf/vpa-dtl: Add documentation for VPA dispatch trace log PMU
powerpc/perf/vpa-dtl: Handle the writing of perf record when aux wake up is needed
powerpc/perf/vpa-dtl: Add support to capture DTL data in aux buffer
powerpc/perf/vpa-dtl: Add support to setup and free aux buffer for capturing DTL data
docs: ABI: sysfs-bus-event_source-devices-vpa-dtl: Document sysfs event format entries for vpa_dtl pmu
powerpc/vpa_dtl: Add interface to expose vpa dtl counters via perf
powerpc/time: Expose boot_tb via accessor
powerpc/32: Remove PAGE_KERNEL_TEXT to fix startup failure
powerpc/fprobe: fix updated fprobe for function-graph tracer
powerpc/ftrace: support CONFIG_FUNCTION_GRAPH_RETVAL
powerpc64/modules: replace stub allocation sentinel with an explicit counter
powerpc64/modules: correctly iterate over stubs in setup_ftrace_ool_stubs
powerpc/ftrace: ensure ftrace record ops are always set for NOPs
powerpc/603: Really copy kernel PGD entries into all PGDIRs
powerpc/8xx: Remove left-over instruction and comments in DataStoreTLBMiss handler
powerpc/pseries: HVPIPE changes to support migration
powerpc/pseries: Enable hvpipe with ibm,set-system-parameter RTAS
powerpc/pseries: Enable HVPIPE event message interrupt
...
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Linus Torvalds
|
feafee2845 |
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's good stuff across the board, including some nice mm
improvements for CPUs with the 'noabort' BBML2 feature and a clever
patch to allow ptdump to play nicely with block mappings in the
vmalloc area.
Confidential computing:
- Add support for accepting secrets from firmware (e.g. ACPI CCEL)
and mapping them with appropriate attributes.
CPU features:
- Advertise atomic floating-point instructions to userspace
- Extend Spectre workarounds to cover additional Arm CPU variants
- Extend list of CPUs that support break-before-make level 2 and
guarantee not to generate TLB conflict aborts for changes of
mapping granularity (BBML2_NOABORT)
- Add GCS support to our uprobes implementation.
Documentation:
- Remove bogus SME documentation concerning register state when
entering/exiting streaming mode.
Entry code:
- Switch over to the generic IRQ entry code (GENERIC_IRQ_ENTRY)
- Micro-optimise syscall entry path with a compiler branch hint.
Memory management:
- Enable huge mappings in vmalloc space even when kernel page-table
dumping is enabled
- Tidy up the types used in our early MMU setup code
- Rework rodata= for closer parity with the behaviour on x86
- For CPUs implementing BBML2_NOABORT, utilise block mappings in the
linear map even when rodata= applies to virtual aliases
- Don't re-allocate the virtual region between '_text' and '_stext',
as doing so confused tools parsing /proc/vmcore.
Miscellaneous:
- Clean-up Kconfig menuconfig text for architecture features
- Avoid redundant bitmap_empty() during determination of supported
SME vector lengths
- Re-enable warnings when building the 32-bit vDSO object
- Avoid breaking our eggs at the wrong end.
Perf and PMUs:
- Support for v3 of the Hisilicon L3C PMU
- Support for Hisilicon's MN and NoC PMUs
- Support for Fujitsu's Uncore PMU
- Support for SPE's extended event filtering feature
- Preparatory work to enable data source filtering in SPE
- Support for multiple lanes in the DWC PCIe PMU
- Support for i.MX94 in the IMX DDR PMU driver
- MAINTAINERS update (Thank you, Yicong)
- Minor driver fixes (PERF_IDX2OFF() overflow, CMN register offsets).
Selftests:
- Add basic LSFE check to the existing hwcaps test
- Support nolibc in GCS tests
- Extend SVE ptrace test to pass unsupported regsets and invalid
vector lengths
- Minor cleanups (typos, cosmetic changes).
System registers:
- Fix ID_PFR1_EL1 definition
- Fix incorrect signedness of some fields in ID_AA64MMFR4_EL1
- Sync TCR_EL1 definition with the latest Arm ARM (L.b)
- Be stricter about the input fed into our AWK sysreg generator
script
- Typo fixes and removal of redundant definitions.
ACPI, EFI and PSCI:
- Decouple Arm's "Software Delegated Exception Interface" (SDEI)
support from the ACPI GHES code so that it can be used by platforms
booted with device-tree
- Remove unnecessary per-CPU tracking of the FPSIMD state across EFI
runtime calls
- Fix a node refcount imbalance in the PSCI device-tree code.
CPU Features:
- Ensure register sanitisation is applied to fields in ID_AA64MMFR4
- Expose AIDR_EL1 to userspace via sysfs, primarily so that KVM
guests can reliably query the underlying CPU types from the VMM
- Re-enabling of SME support (CONFIG_ARM64_SME) as a result of fixes
to our context-switching, signal handling and ptrace code"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (93 commits)
arm64: cpufeature: Remove duplicate asm/mmu.h header
arm64: Kconfig: Make CPU_BIG_ENDIAN depend on BROKEN
perf/dwc_pcie: Fix use of uninitialized variable
arm/syscalls: mark syscall invocation as likely in invoke_syscall
Documentation: hisi-pmu: Add introduction to HiSilicon V3 PMU
Documentation: hisi-pmu: Fix of minor format error
drivers/perf: hisi: Add support for L3C PMU v3
drivers/perf: hisi: Refactor the event configuration of L3C PMU
drivers/perf: hisi: Extend the field of tt_core
drivers/perf: hisi: Extract the event filter check of L3C PMU
drivers/perf: hisi: Simplify the probe process of each L3C PMU version
drivers/perf: hisi: Export hisi_uncore_pmu_isr()
drivers/perf: hisi: Relax the event ID check in the framework
perf: Fujitsu: Add the Uncore PMU driver
arm64: map [_text, _stext) virtual address range non-executable+read-only
arm64/sysreg: Update TCR_EL1 register
arm64: Enable vmalloc-huge with ptdump
arm64: cpufeature: add Neoverse-V3AE to BBML2 allow list
arm64: errata: Apply workarounds for Neoverse-V3AE
arm64: cputype: Add Neoverse-V3AE definitions
...
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||
|
Linus Torvalds
|
a5ba183bde |
Merge tag 'hardening-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"One notable addition is the creation of the 'transitional' keyword for
kconfig so CONFIG renaming can go more smoothly.
This has been a long-standing deficiency, and with the renaming of
CONFIG_CFI_CLANG to CONFIG_CFI (since GCC will soon have KCFI
support), this came up again.
The breadth of the diffstat is mainly this renaming.
- Clean up usage of TRAILING_OVERLAP() (Gustavo A. R. Silva)
- lkdtm: fortify: Fix potential NULL dereference on kmalloc failure
(Junjie Cao)
- Add str_assert_deassert() helper (Lad Prabhakar)
- gcc-plugins: Remove TODO_verify_il for GCC >= 16
- kconfig: Fix BrokenPipeError warnings in selftests
- kconfig: Add transitional symbol attribute for migration support
- kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI"
* tag 'hardening-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
lib/string_choices: Add str_assert_deassert() helper
kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI
kconfig: Add transitional symbol attribute for migration support
kconfig: Fix BrokenPipeError warnings in selftests
gcc-plugins: Remove TODO_verify_il for GCC >= 16
stddef: Introduce __TRAILING_OVERLAP()
stddef: Remove token-pasting in TRAILING_OVERLAP()
lkdtm: fortify: Fix potential NULL dereference on kmalloc failure
|
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Linus Torvalds
|
a240a79d43 |
Merge tag 'seccomp-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp update from Kees Cook: - Fix race with WAIT_KILLABLE_RECV (Johannes Nixdorf) * tag 'seccomp-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: selftests/seccomp: Add a test for the WAIT_KILLABLE_RECV fast reply race seccomp: Fix a race with WAIT_KILLABLE_RECV if the tracer replies too fast |
||
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Linus Torvalds
|
449c2b302c |
Merge tag 'vfs-6.18-rc1.async' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs async directory updates from Christian Brauner:
"This contains further preparatory changes for the asynchronous directory
locking scheme:
- Add lookup_one_positive_killable() which allows overlayfs to
perform lookup that won't block on a fatal signal
- Unify the mount idmap handling in struct renamedata as a rename can
only happen within a single mount
- Introduce kern_path_parent() for audit which sets the path to the
parent and returns a dentry for the target without holding any
locks on return
- Rename kern_path_locked() as it is only used to prepare for the
removal of an object from the filesystem:
kern_path_locked() => start_removing_path()
kern_path_create() => start_creating_path()
user_path_create() => start_creating_user_path()
user_path_locked_at() => start_removing_user_path_at()
done_path_create() => end_creating_path()
NA => end_removing_path()"
* tag 'vfs-6.18-rc1.async' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
debugfs: rename start_creating() to debugfs_start_creating()
VFS: rename kern_path_locked() and related functions.
VFS/audit: introduce kern_path_parent() for audit
VFS: unify old_mnt_idmap and new_mnt_idmap in renamedata
VFS: discard err2 in filename_create()
VFS/ovl: add lookup_one_positive_killable()
|
||
|
Linus Torvalds
|
18b19abc37 |
Merge tag 'namespace-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull namespace updates from Christian Brauner: "This contains a larger set of changes around the generic namespace infrastructure of the kernel. Each specific namespace type (net, cgroup, mnt, ...) embedds a struct ns_common which carries the reference count of the namespace and so on. We open-coded and cargo-culted so many quirks for each namespace type that it just wasn't scalable anymore. So given there's a bunch of new changes coming in that area I've started cleaning all of this up. The core change is to make it possible to correctly initialize every namespace uniformly and derive the correct initialization settings from the type of the namespace such as namespace operations, namespace type and so on. This leaves the new ns_common_init() function with a single parameter which is the specific namespace type which derives the correct parameters statically. This also means the compiler will yell as soon as someone does something remotely fishy. The ns_common_init() addition also allows us to remove ns_alloc_inum() and drops any special-casing of the initial network namespace in the network namespace initialization code that Linus complained about. Another part is reworking the reference counting. The reference counting was open-coded and copy-pasted for each namespace type even though they all followed the same rules. This also removes all open accesses to the reference count and makes it private and only uses a very small set of dedicated helpers to manipulate them just like we do for e.g., files. In addition this generalizes the mount namespace iteration infrastructure introduced a few cycles ago. As reminder, the vfs makes it possible to iterate sequentially and bidirectionally through all mount namespaces on the system or all mount namespaces that the caller holds privilege over. This allow userspace to iterate over all mounts in all mount namespaces using the listmount() and statmount() system call. Each mount namespace has a unique identifier for the lifetime of the systems that is exposed to userspace. The network namespace also has a unique identifier working exactly the same way. This extends the concept to all other namespace types. The new nstree type makes it possible to lookup namespaces purely by their identifier and to walk the namespace list sequentially and bidirectionally for all namespace types, allowing userspace to iterate through all namespaces. Looking up namespaces in the namespace tree works completely locklessly. This also means we can move the mount namespace onto the generic infrastructure and remove a bunch of code and members from struct mnt_namespace itself. There's a bunch of stuff coming on top of this in the future but for now this uses the generic namespace tree to extend a concept introduced first for pidfs a few cycles ago. For a while now we have supported pidfs file handles for pidfds. This has proven to be very useful. This extends the concept to cover namespaces as well. It is possible to encode and decode namespace file handles using the common name_to_handle_at() and open_by_handle_at() apis. As with pidfs file handles, namespace file handles are exhaustive, meaning it is not required to actually hold a reference to nsfs in able to decode aka open_by_handle_at() a namespace file handle. Instead the FD_NSFS_ROOT constant can be passed which will let the kernel grab a reference to the root of nsfs internally and thus decode the file handle. Namespaces file descriptors can already be derived from pidfds which means they aren't subject to overmount protection bugs. IOW, it's irrelevant if the caller would not have access to an appropriate /proc/<pid>/ns/ directory as they could always just derive the namespace based on a pidfd already. It has the same advantage as pidfds. It's possible to reliably and for the lifetime of the system refer to a namespace without pinning any resources and to compare them trivially. Permission checking is kept simple. If the caller is located in the namespace the file handle refers to they are able to open it otherwise they must hold privilege over the owning namespace of the relevant namespace. The namespace file handle layout is exposed as uapi and has a stable and extensible format. For now it simply contains the namespace identifier, the namespace type, and the inode number. The stable format means that userspace may construct its own namespace file handles without going through name_to_handle_at() as they are already allowed for pidfs and cgroup file handles" * tag 'namespace-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (65 commits) ns: drop assert ns: move ns type into struct ns_common nstree: make struct ns_tree private ns: add ns_debug() ns: simplify ns_common_init() further cgroup: add missing ns_common include ns: use inode initializer for initial namespaces selftests/namespaces: verify initial namespace inode numbers ns: rename to __ns_ref nsfs: port to ns_ref_*() helpers net: port to ns_ref_*() helpers uts: port to ns_ref_*() helpers ipv4: use check_net() net: use check_net() net-sysfs: use check_net() user: port to ns_ref_*() helpers time: port to ns_ref_*() helpers pid: port to ns_ref_*() helpers ipc: port to ns_ref_*() helpers cgroup: port to ns_ref_*() helpers ... |
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Linus Torvalds
|
722df25ddf |
Merge tag 'kernel-6.18-rc1.clone3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull copy_process updates from Christian Brauner: "This contains the changes to enable support for clone3() on nios2 which apparently is still a thing. The more exciting part of this is that it cleans up the inconsistency in how the 64-bit flag argument is passed from copy_process() into the various other copy_*() helpers" [ Fixed up rv ltl_monitor 32-bit support as per Sasha Levin in the merge ] * tag 'kernel-6.18-rc1.clone3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: nios2: implement architecture-specific portion of sys_clone3 arch: copy_thread: pass clone_flags as u64 copy_process: pass clone_flags as u64 across calltree copy_sighand: Handle architectures where sizeof(unsigned long) < sizeof(u64) |
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Linus Torvalds
|
e571372101 |
Merge tag 'vfs-6.18-rc1.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull pidfs updates from Christian Brauner: "This just contains a few changes to pid_nr_ns() to make it more robust and cleans up or improves a few users that ab- or misuse it currently" * tag 'vfs-6.18-rc1.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: pid: change task_state() to use task_ppid_nr_ns() pid: change bacct_add_tsk() to use task_ppid_nr_ns() pid: make __task_pid_nr_ns(ns => NULL) safe for zombie callers pid: Add a judgment for ns null in pid_nr_ns |
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Linus Torvalds
|
b7ce6fa90f |
Merge tag 'vfs-6.18-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"This contains the usual selections of misc updates for this cycle.
Features:
- Add "initramfs_options" parameter to set initramfs mount options.
This allows to add specific mount options to the rootfs to e.g.,
limit the memory size
- Add RWF_NOSIGNAL flag for pwritev2()
Add RWF_NOSIGNAL flag for pwritev2. This flag prevents the SIGPIPE
signal from being raised when writing on disconnected pipes or
sockets. The flag is handled directly by the pipe filesystem and
converted to the existing MSG_NOSIGNAL flag for sockets
- Allow to pass pid namespace as procfs mount option
Ever since the introduction of pid namespaces, procfs has had very
implicit behaviour surrounding them (the pidns used by a procfs
mount is auto-selected based on the mounting process's active
pidns, and the pidns itself is basically hidden once the mount has
been constructed)
This implicit behaviour has historically meant that userspace was
required to do some special dances in order to configure the pidns
of a procfs mount as desired. Examples include:
* In order to bypass the mnt_too_revealing() check, Kubernetes
creates a procfs mount from an empty pidns so that user
namespaced containers can be nested (without this, the nested
containers would fail to mount procfs)
But this requires forking off a helper process because you cannot
just one-shot this using mount(2)
* Container runtimes in general need to fork into a container
before configuring its mounts, which can lead to security issues
in the case of shared-pidns containers (a privileged process in
the pidns can interact with your container runtime process)
While SUID_DUMP_DISABLE and user namespaces make this less of an
issue, the strict need for this due to a minor uAPI wart is kind
of unfortunate
Things would be much easier if there was a way for userspace to
just specify the pidns they want. So this pull request contains
changes to implement a new "pidns" argument which can be set
using fsconfig(2):
fsconfig(procfd, FSCONFIG_SET_FD, "pidns", NULL, nsfd);
fsconfig(procfd, FSCONFIG_SET_STRING, "pidns", "/proc/self/ns/pid", 0);
or classic mount(2) / mount(8):
// mount -t proc -o pidns=/proc/self/ns/pid proc /tmp/proc
mount("proc", "/tmp/proc", "proc", MS_..., "pidns=/proc/self/ns/pid");
Cleanups:
- Remove the last references to EXPORT_OP_ASYNC_LOCK
- Make file_remove_privs_flags() static
- Remove redundant __GFP_NOWARN when GFP_NOWAIT is used
- Use try_cmpxchg() in start_dir_add()
- Use try_cmpxchg() in sb_init_done_wq()
- Replace offsetof() with struct_size() in ioctl_file_dedupe_range()
- Remove vfs_ioctl() export
- Replace rwlock() with spinlock in epoll code as rwlock causes
priority inversion on preempt rt kernels
- Make ns_entries in fs/proc/namespaces const
- Use a switch() statement() in init_special_inode() just like we do
in may_open()
- Use struct_size() in dir_add() in the initramfs code
- Use str_plural() in rd_load_image()
- Replace strcpy() with strscpy() in find_link()
- Rename generic_delete_inode() to inode_just_drop() and
generic_drop_inode() to inode_generic_drop()
- Remove unused arguments from fcntl_{g,s}et_rw_hint()
Fixes:
- Document @name parameter for name_contains_dotdot() helper
- Fix spelling mistake
- Always return zero from replace_fd() instead of the file descriptor
number
- Limit the size for copy_file_range() in compat mode to prevent a
signed overflow
- Fix debugfs mount options not being applied
- Verify the inode mode when loading it from disk in minixfs
- Verify the inode mode when loading it from disk in cramfs
- Don't trigger automounts with RESOLVE_NO_XDEV
If openat2() was called with RESOLVE_NO_XDEV it didn't traverse
through automounts, but could still trigger them
- Add FL_RECLAIM flag to show_fl_flags() macro so it appears in
tracepoints
- Fix unused variable warning in rd_load_image() on s390
- Make INITRAMFS_PRESERVE_MTIME depend on BLK_DEV_INITRD
- Use ns_capable_noaudit() when determining net sysctl permissions
- Don't call path_put() under namespace semaphore in listmount() and
statmount()"
* tag 'vfs-6.18-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (38 commits)
fcntl: trim arguments
listmount: don't call path_put() under namespace semaphore
statmount: don't call path_put() under namespace semaphore
pid: use ns_capable_noaudit() when determining net sysctl permissions
fs: rename generic_delete_inode() and generic_drop_inode()
init: INITRAMFS_PRESERVE_MTIME should depend on BLK_DEV_INITRD
initramfs: Replace strcpy() with strscpy() in find_link()
initrd: Use str_plural() in rd_load_image()
initramfs: Use struct_size() helper to improve dir_add()
initrd: Fix unused variable warning in rd_load_image() on s390
fs: use the switch statement in init_special_inode()
fs/proc/namespaces: make ns_entries const
filelock: add FL_RECLAIM to show_fl_flags() macro
eventpoll: Replace rwlock with spinlock
selftests/proc: add tests for new pidns APIs
procfs: add "pidns" mount option
pidns: move is-ancestor logic to helper
openat2: don't trigger automounts with RESOLVE_NO_XDEV
namei: move cross-device check to __traverse_mounts
namei: remove LOOKUP_NO_XDEV check from handle_mounts
...
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Rafael J. Wysocki
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f58f86df6a |
Merge branches 'pm-core', 'pm-runtime' and 'pm-sleep'
Merge changes related to system sleep and runtime PM framework for 6.18-rc1: - Annotate loops walking device links in the power management core code as _srcu and add macros for walking device links to reduce the likelihood of coding mistakes related to them (Rafael Wysocki) - Document time units for *_time functions in the runtime PM API (Brian Norris) - Clear power.must_resume in noirq suspend error path to avoid resuming a dependant device under a suspended parent or supplier (Rafael Wysocki) - Fix GFP mask handling during hybrid suspend and make the amdgpu driver handle hybrid suspend correctly (Mario Limonciello, Rafael Wysocki) - Fix GFP mask handling after aborted hibernation in platform mode and combine exit paths in power_down() to avoid code duplication (Rafael Wysocki) - Use vmalloc_array() and vcalloc() in the hibernation core to avoid open-coded size computations (Qianfeng Rong) - Fix typo in hibernation core code comment (Li Jun) - Call pm_wakeup_clear() in the same place where other functions that do bookkeeping prior to suspend_prepare() are called (Samuel Wu) * pm-core: PM: core: Add two macros for walking device links PM: core: Annotate loops walking device links as _srcu * pm-runtime: PM: runtime: Documentation: ABI: Document time units for *_time * pm-sleep: PM: hibernate: Combine return paths in power_down() PM: hibernate: Restrict GFP mask in power_down() PM: hibernate: Fix pm_hibernation_mode_is_suspend() build breakage drm/amd: Fix hybrid sleep PM: hibernate: Add pm_hibernation_mode_is_suspend() PM: hibernate: Fix hybrid-sleep PM: sleep: core: Clear power.must_resume in noirq suspend error path PM: sleep: Make pm_wakeup_clear() call more clear PM: hibernate: Fix typo in memory bitmaps description comment PM: hibernate: Use vmalloc_array() and vcalloc() to improve code |
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Rafael J. Wysocki
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d6fd599cd4 |
Merge branches 'pm-em', 'pm-opp' and 'pm-devfreq'
Merge energy model management, OPP (operating performance points) and devfreq updates for 6.18-rc1: - Prevent CPU capacity updates after registering a perf domain from failing on a first CPU that is not present (Christian Loehle) - Add support for the cases in which frequency alone is not sufficient to uniquely identify an OPP (Krishna Chaitanya Chundru) - Use to_result() for OPP error handling in Rust (Onur Özkan) - Add support for LPDDR5 on Rockhip RK3588 SoC to rockchip-dfi devfreq driver (Nicolas Frattaroli) - Fix an issue where DDR cycle counts on RK3588/RK3528 with LPDDR4(X) are reported as half by adding a cycle multiplier to the DFI driver in rockchip-dfi devfreq-event driver (Nicolas Frattaroli) - Fix missing error pointer dereference check of regulator instance in the mtk-cci devfreq driver probe and remove a redundant condition from an if () statement in that driver (Dan Carpenter, Liao Yuanhong) * pm-em: PM: EM: Fix late boot with holes in CPU topology * pm-opp: OPP: Add support to find OPP for a set of keys rust: opp: use to_result for error handling * pm-devfreq: PM / devfreq: rockchip-dfi: add support for LPDDR5 PM / devfreq: rockchip-dfi: double count on RK3588 PM / devfreq: mtk-cci: avoid redundant conditions PM / devfreq: mtk-cci: Fix potential error pointer dereference in probe() |
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Linus Torvalds
|
8f9736633f |
Merge tag 'trace-v6.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt: - Fix buffer overflow in osnoise_cpu_write() The allocated buffer to read user space did not add a nul terminating byte after copying from user the string. It then reads the string, and if user space did not add a nul byte, the read will continue beyond the string. Add a nul terminating byte after reading the string. - Fix missing check for lockdown on tracing There's a path from kprobe events or uprobe events that can update the tracing system even if lockdown on tracing is activate. Add a check in the dynamic event path. - Add a recursion check for the function graph return path Now that fprobes can hook to the function graph tracer and call different code between the entry and the exit, the exit code may now call functions that are not called in entry. This means that the exit handler can possibly trigger recursion that is not caught and cause the system to crash. Add the same recursion checks in the function exit handler as exists in the entry handler path. * tag 'trace-v6.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: tracing: fgraph: Protect return handler from recursion loop tracing: dynevent: Add a missing lockdown check on dynevent tracing/osnoise: Fix slab-out-of-bounds in _parse_integer_limit() |
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Daniel Borkmann
|
4540aed51b |
bpf: Enforce expected_attach_type for tailcall compatibility
Yinhao et al. recently reported:
Our fuzzer tool discovered an uninitialized pointer issue in the
bpf_prog_test_run_xdp() function within the Linux kernel's BPF subsystem.
This leads to a NULL pointer dereference when a BPF program attempts to
deference the txq member of struct xdp_buff object.
The test initializes two programs of BPF_PROG_TYPE_XDP: progA acts as the
entry point for bpf_prog_test_run_xdp() and its expected_attach_type can
neither be of be BPF_XDP_DEVMAP nor BPF_XDP_CPUMAP. progA calls into a slot
of a tailcall map it owns. progB's expected_attach_type must be BPF_XDP_DEVMAP
to pass xdp_is_valid_access() validation. The program returns struct xdp_md's
egress_ifindex, and the latter is only allowed to be accessed under mentioned
expected_attach_type. progB is then inserted into the tailcall which progA
calls.
The underlying issue goes beyond XDP though. Another example are programs
of type BPF_PROG_TYPE_CGROUP_SOCK_ADDR. sock_addr_is_valid_access() as well
as sock_addr_func_proto() have different logic depending on the programs'
expected_attach_type. Similarly, a program attached to BPF_CGROUP_INET4_GETPEERNAME
should not be allowed doing a tailcall into a program which calls bpf_bind()
out of BPF which is only enabled for BPF_CGROUP_INET4_CONNECT.
In short, specifying expected_attach_type allows to open up additional
functionality or restrictions beyond what the basic bpf_prog_type enables.
The use of tailcalls must not violate these constraints. Fix it by enforcing
expected_attach_type in __bpf_prog_map_compatible().
Note that we only enforce this for tailcall maps, but not for BPF devmaps or
cpumaps: There, the programs are invoked through dev_map_bpf_prog_run*() and
cpu_map_bpf_prog_run*() which set up a new environment / context and therefore
these situations are not prone to this issue.
Fixes:
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Masami Hiramatsu (Google)
|
0db0934e7f |
tracing: fgraph: Protect return handler from recursion loop
function_graph_enter_regs() prevents itself from recursion by ftrace_test_recursion_trylock(), but __ftrace_return_to_handler(), which is called at the exit, does not prevent such recursion. Therefore, while it can prevent recursive calls from fgraph_ops::entryfunc(), it is not able to prevent recursive calls to fgraph from fgraph_ops::retfunc(), resulting in a recursive loop. This can lead an unexpected recursion bug reported by Menglong. is_endbr() is called in __ftrace_return_to_handler -> fprobe_return -> kprobe_multi_link_exit_handler -> is_endbr. To fix this issue, acquire ftrace_test_recursion_trylock() in the __ftrace_return_to_handler() after unwind the shadow stack to mark this section must prevent recursive call of fgraph inside user-defined fgraph_ops::retfunc(). This is essentially a fix to commit |
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Linus Torvalds
|
083fc6d7fa |
Merge tag 'sched-urgent-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar: "Fix two dl_server regressions: a race that can end up leaving the dl_server stuck, and a dl_server throttling bug causing lag to fair tasks" * tag 'sched-urgent-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/deadline: Fix dl_server behaviour sched/deadline: Fix dl_server getting stuck |
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Linus Torvalds
|
2cea0ed979 |
Merge tag 'locking-urgent-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar: "Fix a PI-futexes race, and fix a copy_process() futex cleanup bug" * tag 'locking-urgent-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: futex: Use correct exit on failure from futex_hash_allocate_default() futex: Prevent use-after-free during requeue-PI |
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Rafael J. Wysocki
|
1f5bcfe91f |
PM: hibernate: Combine return paths in power_down()
To avoid code duplication and improve clarity, combine the code paths in power_down() leading to a return from that function. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org> Link: https://patch.msgid.link/3571055.QJadu78ljV@rafael.j.wysocki [ rjw: Changed the new label name to "exit" ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Rafael J. Wysocki
|
6f4c6f9ed4 |
PM: hibernate: Restrict GFP mask in power_down()
Commit |
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Tao Chen
|
17f0d1f632 |
bpf: Add lookup_and_delete_elem for BPF_MAP_STACK_TRACE
The stacktrace map can be easily full, which will lead to failure in obtaining the stack. In addition to increasing the size of the map, another solution is to delete the stack_id after looking it up from the user, so extend the existing bpf_map_lookup_and_delete_elem() functionality to stacktrace map types. Signed-off-by: Tao Chen <chen.dylane@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20250925175030.1615837-1-chen.dylane@linux.dev |
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Mario Limonciello (AMD)
|
495c8d3503 |
PM: hibernate: Add pm_hibernation_mode_is_suspend()
Some drivers have different flows for hibernation and suspend. If the driver opportunistically will skip thaw() then it needs a hint to know what is happening after the hibernate. Introduce a new symbol pm_hibernation_mode_is_suspend() that drivers can call to determine if suspending the system for this purpose. Tested-by: Ionut Nechita <ionut_n2001@yahoo.com> Tested-by: Kenneth Crudup <kenny@panix.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Mario Limonciello (AMD)
|
469d80a371 |
PM: hibernate: Fix hybrid-sleep
Hybrid sleep will hibernate the system followed by running through
the suspend routine. Since both the hibernate and the suspend routine
will call pm_restrict_gfp_mask(), pm_restore_gfp_mask() must be called
before starting the suspend sequence.
Add an explicit call to pm_restore_gfp_mask() to power_down() before
the suspend sequence starts. Add an extra call for pm_restrict_gfp_mask()
when exiting suspend so that the pm_restore_gfp_mask() call in hibernate()
is balanced.
Reported-by: Ionut Nechita <ionut_n2001@yahoo.com>
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4573
Tested-by: Ionut Nechita <ionut_n2001@yahoo.com>
Fixes:
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Linus Torvalds
|
93a2744561 |
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio fixes from Michael Tsirkin: "virtio,vhost: last minute fixes More small fixes. Most notably this fixes crashes and hangs in vhost-net" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: MAINTAINERS, mailmap: Update address for Peter Hilber virtio_config: clarify output parameters uapi: vduse: fix typo in comment vhost: Take a reference on the task in struct vhost_task. vhost-net: flush batched before enabling notifications Revert "vhost/net: Defer TX queue re-enable until after sendmsg" vhost-net: unbreak busy polling vhost-scsi: fix argument order in tport allocation error message |
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Menglong Dong
|
378b770819 |
sched: Make migrate_{en,dis}able() inline
For now, migrate_enable and migrate_disable are global, which makes them
become hotspots in some case. Take BPF for example, the function calling
to migrate_enable and migrate_disable in BPF trampoline can introduce
significant overhead, and following is the 'perf top' of FENTRY's
benchmark (./tools/testing/selftests/bpf/bench trig-fentry):
54.63% bpf_prog_2dcccf652aac1793_bench_trigger_fentry [k]
bpf_prog_2dcccf652aac1793_bench_trigger_fentry
10.43% [kernel] [k] migrate_enable
10.07% bpf_trampoline_6442517037 [k] bpf_trampoline_6442517037
8.06% [kernel] [k] __bpf_prog_exit_recur
4.11% libc.so.6 [.] syscall
2.15% [kernel] [k] entry_SYSCALL_64
1.48% [kernel] [k] memchr_inv
1.32% [kernel] [k] fput
1.16% [kernel] [k] _copy_to_user
0.73% [kernel] [k] bpf_prog_test_run_raw_tp
So in this commit, we make migrate_enable/migrate_disable inline to obtain
better performance. The struct rq is defined internally in
kernel/sched/sched.h, and the field "nr_pinned" is accessed in
migrate_enable/migrate_disable, which makes it hard to make them inline.
Alexei Starovoitov suggests to generate the offset of "nr_pinned" in [1],
so we can define the migrate_enable/migrate_disable in
include/linux/sched.h and access "this_rq()->nr_pinned" with
"(void *)this_rq() + RQ_nr_pinned".
The offset of "nr_pinned" is generated in include/generated/rq-offsets.h
by kernel/sched/rq-offsets.c.
Generally speaking, we move the definition of migrate_enable and
migrate_disable to include/linux/sched.h from kernel/sched/core.c. The
calling to __set_cpus_allowed_ptr() is leaved in ___migrate_enable().
The "struct rq" is not available in include/linux/sched.h, so we can't
access the "runqueues" with this_cpu_ptr(), as the compilation will fail
in this_cpu_ptr() -> raw_cpu_ptr() -> __verify_pcpu_ptr():
typeof((ptr) + 0)
So we introduce the this_rq_raw() and access the runqueues with
arch_raw_cpu_ptr/PERCPU_PTR directly.
The variable "runqueues" is not visible in the kernel modules, and export
it is not a good idea. As Peter Zijlstra advised in [2], we define and
export migrate_enable/migrate_disable in kernel/sched/core.c too, and use
them for the modules.
Before this patch, the performance of BPF FENTRY is:
fentry : 113.030 ± 0.149M/s
fentry : 112.501 ± 0.187M/s
fentry : 112.828 ± 0.267M/s
fentry : 115.287 ± 0.241M/s
After this patch, the performance of BPF FENTRY increases to:
fentry : 143.644 ± 0.670M/s
fentry : 149.764 ± 0.362M/s
fentry : 149.642 ± 0.156M/s
fentry : 145.263 ± 0.221M/s
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/bpf/CAADnVQ+5sEDKHdsJY5ZsfGDO_1SEhhQWHrt2SMBG5SYyQ+jt7w@mail.gmail.com/ [1]
Link: https://lore.kernel.org/all/20250819123214.GH4067720@noisy.programming.kicks-ass.net/ [2]
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Peter Zijlstra
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a3a70caf79 |
sched/deadline: Fix dl_server behaviour
John reported undesirable behaviour with the dl_server since commit: |
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Peter Zijlstra
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4ae8d9aa9f |
sched/deadline: Fix dl_server getting stuck
John found it was easy to hit lockup warnings when running locktorture on a 2 CPU VM, which he bisected down to: commit |
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Christian Brauner
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af075603f2 |
ns: drop assert
Otherwise we warn when e.g., no namespaces are configured but the initial namespace for is still around. Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Christian Brauner
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4055526d35 |
ns: move ns type into struct ns_common
It's misplaced in struct proc_ns_operations and ns->ops might be NULL if the namespace is compiled out but we still want to know the type of the namespace for the initial namespace struct. Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Christian Brauner
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10cdfcd37a |
nstree: make struct ns_tree private
Don't expose it directly. There's no need to do that. Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Linus Torvalds
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bf40f4b877 |
Merge tag 'probes-fixes-v6.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fixes from Masami Hiramatsu: - fprobe: Even if there is a memory allocation failure, try to remove the addresses recorded until then from the filter. Previously we just skipped it. - tracing: dynevent: Add a missing lockdown check on dynevent. This dynevent is the interface for all probe events. Thus if there is no check, any probe events can be added after lock down the tracefs. * tag 'probes-fixes-v6.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: tracing: dynevent: Add a missing lockdown check on dynevent tracing: fprobe: Fix to remove recorded module addresses from filter |
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Kees Cook
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23ef9d4397 |
kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI
The kernel's CFI implementation uses the KCFI ABI specifically, and is not strictly tied to a particular compiler. In preparation for GCC supporting KCFI, rename CONFIG_CFI_CLANG to CONFIG_CFI (along with associated options). Use new "transitional" Kconfig option for old CONFIG_CFI_CLANG that will enable CONFIG_CFI during olddefconfig. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20250923213422.1105654-3-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
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Will Deacon
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4e4e36dce3 |
Merge branch 'for-next/uprobes' into for-next/core
* for-next/uprobes: arm64: probes: Fix incorrect bl/blr address and register usage uprobes: uprobe_warn should use passed task arm64: Kconfig: Remove GCS restrictions on UPROBES arm64: uprobes: Add GCS support to uretprobes arm64: probes: Add GCS support to bl/blr/ret arm64: uaccess: Add additional userspace GCS accessors arm64: uaccess: Move existing GCS accessors definitions to gcs.h arm64: probes: Break ret out from bl/blr |
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Masami Hiramatsu (Google)
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456c32e3c4 |
tracing: dynevent: Add a missing lockdown check on dynevent
Since dynamic_events interface on tracefs is compatible with
kprobe_events and uprobe_events, it should also check the lockdown
status and reject if it is set.
Link: https://lore.kernel.org/all/175824455687.45175.3734166065458520748.stgit@devnote2/
Fixes:
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Masami Hiramatsu (Google)
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c539feff3c |
tracing: fprobe: Fix to remove recorded module addresses from filter
Even if there is a memory allocation failure in fprobe_addr_list_add(),
there is a partial list of module addresses. So remove the recorded
addresses from filter if exists.
This also removes the redundant ret local variable.
Fixes:
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