mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-09-22 09:34:56 +02:00
1d17e808cf2aad182f0eb2ea83e329e4a6795428
1385011
Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 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
|
||
|
Linus Torvalds
|
7601d18be0 |
Merge tag 'core-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull TIF bit unification updates from Thomas Gleixner: "A set of changes to consolidate the generic TIF (thread info flag) bits accross architectures. All architectures define the same set of generic TIF bits. This makes it pointlessly hard to add a new generic TIF bit or to change an existing one. Provide a generic variant and convert the architectures which utilize the generic entry code over to use it. The TIF space is divided into 16 generic bits and 16 architecture specific bits, which turned out to provide enough space on both sides" * tag 'core-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: LoongArch: Fix bitflag conflict for TIF_FIXADE riscv: Use generic TIF bits loongarch: Use generic TIF bits s390/entry: Remove unused TIF flags s390: Use generic TIF bits x86: Use generic TIF bits asm-generic: Provide generic TIF infrastructure |
||
|
Linus Torvalds
|
22bdd6e68b |
Merge tag 'x86_apic_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV and apic updates from Borislav Petkov: - Add functionality to provide runtime firmware updates for the non-x86 parts of an AMD platform like the security processor (ASP) firmware, modules etc, for example. The intent being that these updates are interim, live fixups before a proper BIOS update can be attempted - Add guest support for AMD's Secure AVIC feature which gives encrypted guests the needed protection against a malicious hypervisor generating unexpected interrupts and injecting them into such guest, thus interfering with its operation in an unexpected and negative manner. The advantage of this scheme is that the guest determines which interrupts and when to accept them vs leaving that to the benevolence (or not) of the hypervisor - Strictly separate the startup code from the rest of the kernel where former is executed from the initial 1:1 mapping of memory. The problem was that the toolchain-generated version of the code was being executed from a different mapping of memory than what was "assumed" during code generation, needing an ever-growing pile of fixups for absolute memory references which are invalid in the early, 1:1 memory mapping during boot. The major advantage of this is that there's no need to check the 1:1 mapping portion of the code for absolute relocations anymore and get rid of the RIP_REL_REF() macro sprinkling all over the place. For more info, see Ard's very detailed writeup on this [1] - The usual cleanups and fixes Link: https://lore.kernel.org/r/CAMj1kXEzKEuePEiHB%2BHxvfQbFz0sTiHdn4B%2B%2BzVBJ2mhkPkQ4Q@mail.gmail.com [1] * tag 'x86_apic_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (49 commits) x86/boot: Drop erroneous __init annotation from early_set_pages_state() crypto: ccp - Add AMD Seamless Firmware Servicing (SFS) driver crypto: ccp - Add new HV-Fixed page allocation/free API x86/sev: Add new dump_rmp parameter to snp_leak_pages() API x86/startup/sev: Document the CPUID flow in the boot #VC handler objtool: Ignore __pi___cfi_ prefixed symbols x86/sev: Zap snp_abort() x86/apic/savic: Do not use snp_abort() x86/boot: Get rid of the .head.text section x86/boot: Move startup code out of __head section efistub/x86: Remap inittext read-execute when needed x86/boot: Create a confined code area for startup code x86/kbuild: Incorporate boot/startup/ via Kbuild makefile x86/boot: Revert "Reject absolute references in .head.text" x86/boot: Check startup code for absence of absolute relocations objtool: Add action to check for absence of absolute relocations x86/sev: Export startup routines for later use x86/sev: Move __sev_[get|put]_ghcb() into separate noinstr object x86/sev: Provide PIC aliases for SEV related data objects x86/boot: Provide PIC aliases for 5-level paging related constants ... |
||
|
Linus Torvalds
|
2cb8eeaf00 |
Merge tag 'x86_cache_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 resource control updates from Borislav Petkov: "Add support on AMD for assigning QoS bandwidth counters to resources (RMIDs) with the ability for those resources to be tracked by the counters as long as they're assigned to them. Previously, due to hw limitations, bandwidth counts from untracked resources would get lost when those resources are not tracked. Refactor the code and user interfaces to be able to also support other, similar features on ARM, for example" * tag 'x86_cache_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (35 commits) fs/resctrl: Fix counter auto-assignment on mkdir with mbm_event enabled MAINTAINERS: resctrl: Add myself as reviewer x86/resctrl: Configure mbm_event mode if supported fs/resctrl: Introduce the interface to switch between monitor modes fs/resctrl: Disable BMEC event configuration when mbm_event mode is enabled fs/resctrl: Introduce the interface to modify assignments in a group fs/resctrl: Introduce mbm_L3_assignments to list assignments in a group fs/resctrl: Auto assign counters on mkdir and clean up on group removal fs/resctrl: Introduce mbm_assign_on_mkdir to enable assignments on mkdir fs/resctrl: Provide interface to update the event configurations fs/resctrl: Add event configuration directory under info/L3_MON/ fs/resctrl: Support counter read/reset with mbm_event assignment mode x86/resctrl: Implement resctrl_arch_reset_cntr() and resctrl_arch_cntr_read() x86/resctrl: Refactor resctrl_arch_rmid_read() fs/resctrl: Introduce counter ID read, reset calls in mbm_event mode fs/resctrl: Pass struct rdtgroup instead of individual members fs/resctrl: Add the functionality to unassign MBM events fs/resctrl: Add the functionality to assign MBM events x86,fs/resctrl: Implement resctrl_arch_config_cntr() to assign a counter with ABMC fs/resctrl: Introduce event configuration field in struct mon_evt ... |
||
|
Linus Torvalds
|
a65879b458 |
Merge tag 'x86_cpu_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpuid updates from Borislav Petkov: - Make UMIP instruction detection more robust - Correct and cleanup AMD CPU topology detection; document the relevant CPUID leaves topology parsing precedence on AMD - Add support for running the kernel as guest on FreeBSD's Bhyve hypervisor - Cleanups and improvements * tag 'x86_cpu_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/umip: Fix decoding of register forms of 0F 01 (SGDT and SIDT aliases) x86/umip: Check that the instruction opcode is at least two bytes Documentation/x86/topology: Detail CPUID leaves used for topology enumeration x86/cpu/topology: Define AMD64_CPUID_EXT_FEAT MSR x86/cpu/topology: Check for X86_FEATURE_XTOPOLOGY instead of passing has_xtopology x86/cpu/cacheinfo: Simplify cacheinfo_amd_init_llc_id() using _cpuid4_info x86/cpu: Rename and move CPU model entry for Diamond Rapids x86/cpu: Detect FreeBSD Bhyve hypervisor |
||
|
Linus Torvalds
|
d7ec0cf1cd |
Merge tag 'x86_bugs_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mitigation updates from Borislav Petkov: - Add VMSCAPE to the attack vector controls infrastructure - A bunch of the usual cleanups and fixlets, some of them resulting from fuzzing the different mitigation options * tag 'x86_bugs_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/bugs: Report correct retbleed mitigation status x86/bugs: Fix reporting of LFENCE retpoline x86/bugs: Fix spectre_v2 forcing x86/bugs: Remove uses of cpu_mitigations_off() x86/bugs: Simplify SSB cmdline parsing x86/bugs: Use early_param() for spectre_v2 x86/bugs: Use early_param() for spectre_v2_user x86/bugs: Add attack vector controls for VMSCAPE x86/its: Move ITS indirect branch thunks to .text..__x86.indirect_thunk |
||
|
Linus Torvalds
|
d9c43b6e43 |
Merge tag 'ras_core_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 RAS updates from Borislav Petkov:
- Unify and refactor the MCA arch side and better separate code
- Cleanup and simplify the AMD RAS side, unify code, drop unused stuff
* tag 'ras_core_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Add a clear_bank() helper
x86/mce: Move machine_check_poll() status checks to helper functions
x86/mce: Separate global and per-CPU quirks
x86/mce: Do 'UNKNOWN' vendor check early
x86/mce: Define BSP-only SMCA init
x86/mce: Define BSP-only init
x86/mce: Set CR4.MCE last during init
x86/mce: Remove __mcheck_cpu_init_early()
x86/mce: Cleanup bank processing on init
x86/mce/amd: Put list_head in threshold_bank
x86/mce/amd: Remove smca_banks_map
x86/mce/amd: Remove return value for mce_threshold_{create,remove}_device()
x86/mce/amd: Rename threshold restart function
|
||
|
Linus Torvalds
|
bd91417a96 |
Merge tag 'x86_microcode_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode loading updates from Borislav Petkov: - Add infrastructure to be able to debug the microcode loader in a guest - Refresh Intel old microcode revisions * tag 'x86_microcode_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/microcode: Add microcode loader debugging functionality x86/microcode: Add microcode= cmdline parsing x86/microcode/intel: Refresh the revisions that determine old_microcode |
||
|
Linus Torvalds
|
45d96dd2c6 |
Merge tag 'x86_asm_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm update from Borislav Petkov: - Fix RDPID's output operand size in inline asm and use the insn mnemonic because the minimum binutils version supports it * tag 'x86_asm_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/vdso: Fix output operand size of RDPID |
||
|
Linus Torvalds
|
163d9c6b33 |
Merge tag 'x86_build_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build updates from Borislav Petkov: - Remove and simplify a bunch of cc-option and compiler version checks in the build machinery now that the minimal version of both compilers supports them * tag 'x86_build_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/Kconfig: Clean up LLVM version checks in IBT configurations x86/build: Remove cc-option from -mskip-rax-setup x86/build: Remove cc-option from -mno-fp-ret-in-387 x86/build: Clean up stack alignment flags in CC_FLAGS_FPU x86/build: Remove cc-option from stack alignment flags x86/build: Remove cc-option for GCC retpoline flags |
||
|
Linus Torvalds
|
98afd4dd3d |
Merge tag 'x86_misc_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 instruction decoder update from Borislav Petkov: - Add instruction decoding support for the XOP-prefixed instruction set present on the AMD Bulldozer uarch [ These instructions don't normally happen, but a X86_NATIVE_CPU build on a bulldozer host can make the compiler then use these unusual instruction encodings ] * tag 'x86_misc_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/insn: Add XOP prefix instructions decoder support |
||
|
Linus Torvalds
|
03f76ddff5 |
Merge tag 'edac_updates_for_v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- Add support for new AMD family 0x1a models to amd64_edac
- Add an EDAC driver for the AMD VersalNET memory controller which
reports hw errors from different IP blocks in the fabric using an
IPC-type transport
- Drop the silly static number of memory controllers in the Intel EDAC
drivers (skx, i10nm) in favor of a flexible array so that former
doesn't need to be increased with every new generation which adds
more memory controllers; along with a proper refactoring
- Add support for two Alder Lake-S SOCs to ie31200_edac
- Add an EDAC driver for ADM Cortex A72 cores, and specifically for
reporting L1 and L2 cache errors
- Last but not least, the usual fixes, cleanups and improvements all
over the subsystem
* tag 'edac_updates_for_v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: (23 commits)
EDAC/versalnet: Return the correct error in mc_probe()
EDAC/mc_sysfs: Increase legacy channel support to 16
EDAC/amd64: Add support for AMD family 1Ah-based newer models
EDAC: Add a driver for the AMD Versal NET DDR controller
dt-bindings: memory-controllers: Add support for Versal NET EDAC
RAS: Export log_non_standard_event() to drivers
cdx: Export Symbols for MCDI RPC and Initialization
cdx: Split mcdi.h and reorganize headers
EDAC/skx_common: Use topology_physical_package_id() instead of open coding
EDAC: Fix wrong executable file modes for C source files
EDAC/altera: Use dev_fwnode()
EDAC/skx_common: Remove unused *NUM*_IMC macros
EDAC/i10nm: Reallocate skx_dev list if preconfigured cnt != runtime cnt
EDAC/skx_common: Remove redundant upper bound check for res->imc
EDAC/skx_common: Make skx_dev->imc[] a flexible array
EDAC/skx_common: Swap memory controller index mapping
EDAC/skx_common: Move mc_mapping to be a field inside struct skx_imc
EDAC/{skx_common,skx}: Use configuration data, not global macros
EDAC/i10nm: Skip DIMM enumeration on a disabled memory controller
EDAC/ie31200: Add two more Intel Alder Lake-S SoCs for EDAC support
...
|
||
|
Linus Torvalds
|
88b489385b |
Merge tag 'locking-core-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Mostly Rust runtime enhancements:
- Add initial support for generic LKMM atomic variables in Rust (Boqun Feng)
- Add the wrapper for `refcount_t` in Rust (Gary Guo)
- Add a new reviewer, Gary Guo"
* tag 'locking-core-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: update atomic infrastructure entry to include Rust
rust: block: convert `block::mq` to use `Refcount`
rust: convert `Arc` to use `Refcount`
rust: make `Arc::into_unique_or_drop` associated function
rust: implement `kernel::sync::Refcount`
rust: sync: Add memory barriers
rust: sync: atomic: Add Atomic<{usize,isize}>
rust: sync: atomic: Add Atomic<u{32,64}>
rust: sync: atomic: Add the framework of arithmetic operations
rust: sync: atomic: Add atomic {cmp,}xchg operations
rust: sync: atomic: Add generic atomics
rust: sync: atomic: Add ordering annotation types
rust: sync: Add basic atomic operation mapping framework
rust: Introduce atomic API helpers
|
||
|
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
...
|
||
|
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()
|
||
|
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() ... |
||
|
Linus Torvalds
|
76f01a4f22 |
Merge tag 'lsm-pr-20250926' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
Pull lsm updates from Paul Moore: - Move the management of the LSM BPF security blobs into the framework In order to enable multiple LSMs we need to allocate and free the various security blobs in the LSM framework and not the individual LSMs as they would end up stepping all over each other. - Leverage the lsm_bdev_alloc() helper in lsm_bdev_alloc() Make better use of our existing helper functions to reduce some code duplication. - Update the Rust cred code to use 'sync::aref' Part of a larger effort to move the Rust code over to the 'sync' module. - Make CONFIG_LSM dependent on CONFIG_SECURITY As the CONFIG_LSM Kconfig setting is an ordered list of the LSMs to enable a boot, it obviously doesn't make much sense to enable this when CONFIG_SECURITY is disabled. - Update the LSM and CREDENTIALS sections in MAINTAINERS with Rusty bits Add the Rust helper files to the associated LSM and CREDENTIALS entries int the MAINTAINERS file. We're trying to improve the communication between the two groups and making sure we're all aware of what is going on via cross-posting to the relevant lists is a good way to start. * tag 'lsm-pr-20250926' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm: lsm: CONFIG_LSM can depend on CONFIG_SECURITY MAINTAINERS: add the associated Rust helper to the CREDENTIALS section MAINTAINERS: add the associated Rust helper to the LSM section rust,cred: update AlwaysRefCounted import to sync::aref security: use umax() to improve code lsm,selinux: Add LSM blob support for BPF objects lsm: use lsm_blob_alloc() in lsm_bdev_alloc() |
||
|
Linus Torvalds
|
57bc683896 |
Merge tag 'selinux-pr-20250926' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux updates from Paul Moore: - Support per-file labeling for functionfs Both genfscon and user defined labeling methods are supported. This should help users who want to provide separation between the control endpoint file, "ep0", and other endpoints. - Remove our use of get_zeroed_page() in sel_read_bool() Update sel_read_bool() to use a four byte stack buffer instead of a memory page fetched via get_zeroed_page(), and fix a memory in the process. Needless to say we should have done this a long time ago, but it was in a very old chunk of code that "just worked" and I don't think anyone had taken a real look at it in many years. - Better use of the netdev skb/sock helper functions Convert a sk_to_full_sk(skb->sk) into a skb_to_full_sk(skb) call. - Remove some old, dead, and/or redundant code * tag 'selinux-pr-20250926' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: enable per-file labeling for functionfs selinux: fix sel_read_bool() allocation and error handling selinux: Remove redundant __GFP_NOWARN selinux: use a consistent method to get full socket from skb selinux: Remove unused function selinux_policycap_netif_wildcard() |
||
|
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() |
||
|
Linus Torvalds
|
f3827213ab |
Merge tag 'for-6.18-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"There are no new features, the changes are in the core code, notably
tree-log error handling and reporting improvements, and initial
support for block size > page size.
Performance improvements:
- search data checksums in the commit root (previous transaction) to
avoid locking contention, this improves parallelism of read
heavy/low write workloads, and also reduces transaction commit
time; on real and reproducer workload the sync time went from
minutes to tens of seconds (workload and numbers are in the
changelog)
Core:
- tree-log updates:
- error handling improvements, transaction aborts
- add new error state 'O' (printed in status messages) when log
replay fails and is aborted
- reduced number of btrfs_path allocations when traversing the
tree
- 'block size > page size' support
- basic implementation with limitations, under experimental build
- limitations: no direct io, raid56, encoded read (standalone and
in send ioctl), encoded write
- preparatory work for compression, removing implicit assumptions
of page and block sizes
- compression workspaces are now per-filesystem, we cannot assume
common block size for work memory among different filesystems
- tree-checker now verifies INODE_EXTREF item (which is implementing
hardlinks)
- tree leaf pretty printer updates, there were missing data from
items, keys/items
- move config option CONFIG_BTRFS_REF_VERIFY to CONFIG_BTRFS_DEBUG,
it's a debugging feature and not needed to be enabled separately
- more struct btrfs_path auto free updates
- use ref_tracker API for tracking delayed inodes, enabled by mount
option 'ref_verify', allowing to better pinpoint leaking references
- in zoned mode, avoid selecting data relocation zoned for ordinary
data block groups
- updated and enhanced error messages
- lots of cleanups and refactoring"
* tag 'for-6.18-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (113 commits)
btrfs: use smp_mb__after_atomic() when forcing COW in create_pending_snapshot()
btrfs: add unlikely annotations to branches leading to transaction abort
btrfs: add unlikely annotations to branches leading to EIO
btrfs: add unlikely annotations to branches leading to EUCLEAN
btrfs: more trivial BTRFS_PATH_AUTO_FREE conversions
btrfs: zoned: don't fail mount needlessly due to too many active zones
btrfs: use kmalloc_array() for open-coded arithmetic in kmalloc()
btrfs: enable experimental bs > ps support
btrfs: add extra ASSERT()s to catch unaligned bios
btrfs: fix symbolic link reading when bs > ps
btrfs: prepare scrub to support bs > ps cases
btrfs: prepare zlib to support bs > ps cases
btrfs: prepare lzo to support bs > ps cases
btrfs: prepare zstd to support bs > ps cases
btrfs: prepare compression folio alloc/free for bs > ps cases
btrfs: fix the incorrect max_bytes value for find_lock_delalloc_range()
btrfs: remove pointless key offset setup in create_pending_snapshot()
btrfs: annotate btrfs_is_testing() as unlikely and make it return bool
btrfs: make the rule checking more readable for should_cow_block()
btrfs: simplify inline extent end calculation at replay_one_extent()
...
|
||
|
Linus Torvalds
|
30d4efb2f5 |
Merge tag 'for-linus-6.18-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross: - fix the migration of a Xen virq to another cpu plus some related cleanup work - clean up Xen-PV mode specific code, resulting in removing some of that code in the resulting binary in case CONFIG_XEN_PV is not set - fixes and cleanup for suspend handling under Xen * tag 'for-linus-6.18-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: take system_transition_mutex on suspend xen/manage: Fix suspend error path xen/events: Update virq_to_irq on migration xen/events: Return -EEXIST for bound VIRQs xen/events: Cleanup find_virq() return codes x86/xen: select HIBERNATE_CALLBACKS more directly drivers/xen/gntdev: use xen_pv_domain() instead of cached value xen: replace XENFEAT_auto_translated_physmap with xen_pv_domain() xen: rework xen_pv_domain() |
||
|
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
...
|
||
|
Linus Torvalds
|
9cc220a422 |
Merge tag 's390-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Alexander Gordeev: - Refactor SCLP memory hotplug code - Introduce common boot_panic() decompressor helper macro and use it to get rid of nearly few identical implementations - Take into account additional key generation flags and forward it to the ep11 implementation. With that allow users to modify the key generation process, e.g. provide valid combinations of XCP_BLOB_* flags - Replace kmalloc() + copy_from_user() with memdup_user_nul() in s390 debug facility and HMC driver - Add DAX support for DCSS memory block devices - Make the compiler statement attribute "assume" available with a new __assume macro - Rework ffs() and fls() family bitops functions, including source code improvements and generated code optimizations. Use the newly introduced __assume macro for that - Enable additional network features in default configurations - Use __GFP_ACCOUNT flag for user page table allocations to add missing kmemcg accounting - Add WQ_PERCPU flag to explicitly request the use of the per-CPU workqueue for 3590 tape driver - Switch power reading to the per-CPU and the Hiperdispatch to the default workqueue - Add memory allocation profiling hooks to allow better profiling data and the /proc/allocinfo output similar to other architectures * tag 's390-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (21 commits) s390/mm: Add memory allocation profiling hooks s390: Replace use of system_wq with system_dfl_wq s390/diag324: Replace use of system_wq with system_percpu_wq s390/tape: Add WQ_PERCPU to alloc_workqueue users s390/bitops: Switch to generic ffs() if supported by compiler s390/bitops: Switch to generic fls(), fls64(), etc. s390/mm: Use __GFP_ACCOUNT for user page table allocations s390/configs: Enable additional network features s390/bitops: Cleanup __flogr() s390/bitops: Use __assume() for __flogr() inline assembly return value compiler_types: Add __assume macro s390/bitops: Limit return value range of __flogr() s390/dcssblk: Add DAX support s390/hmcdrv: Replace kmalloc() + copy_from_user() with memdup_user_nul() s390/debug: Replace kmalloc() + copy_from_user() with memdup_user_nul() s390/pkey: Forward keygenflags to ep11_unwrapkey s390/boot: Add common boot_panic() code s390/bitops: Optimize inlining s390/bitops: Slightly optimize ffs() and fls64() s390/sclp: Move memory hotplug code for better modularity ... |
||
|
Linus Torvalds
|
f1004b2f19 |
Merge tag 'm68k-for-v6.18-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven: - Fix whitespace in Zorro name macros - Fix find_*_bit() signatures - defconfig updates * tag 'm68k-for-v6.18-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: defconfig: Update defconfigs for v6.17-rc1 m68k: bitops: Fix find_*_bit() signatures zorro: Remove extra whitespace in macro definitions |
||
|
Linus Torvalds
|
cb7e3669c6 |
Merge tag 'riscv-for-linus-6.18-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley - Replacement of __ASSEMBLY__ with __ASSEMBLER__ in header files (other architectures have already merged this type of cleanup) - The introduction of ioremap_wc() for RISC-V - Cleanup of the RISC-V kprobes code to use mostly-extant macros rather than open code - A RISC-V kprobes unit test - An architecture-specific endianness swap macro set implementation, leveraging some dedicated RISC-V instructions for this purpose if they are available - The ability to identity and communicate to userspace the presence of a MIPS P8700-specific ISA extension, and to leverage its MIPS-specific PAUSE implementation in cpu_relax() - Several other miscellaneous cleanups * tag 'riscv-for-linus-6.18-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (39 commits) riscv: errata: Fix the PAUSE Opcode for MIPS P8700 riscv: hwprobe: Document MIPS xmipsexectl vendor extension riscv: hwprobe: Add MIPS vendor extension probing riscv: Add xmipsexectl instructions riscv: Add xmipsexectl as a vendor extension dt-bindings: riscv: Add xmipsexectl ISA extension description riscv: cpufeature: add validation for zfa, zfh and zfhmin perf: riscv: skip empty batches in counter start selftests: riscv: Add README for RISC-V KSelfTest riscv: sbi: Switch to new sys-off handler API riscv: Move vendor errata definitions to new header RISC-V: ACPI: enable parsing the BGRT table riscv: Enable ARCH_HAVE_NMI_SAFE_CMPXCHG riscv: pi: use 'targets' instead of extra-y in Makefile riscv: introduce asm/swab.h riscv: mmap(): use unsigned offset type in riscv_sys_mmap drivers/perf: riscv: Remove redundant ternary operators riscv: mm: Use mmu-type from FDT to limit SATP mode riscv: mm: Return intended SATP mode for noXlvl options riscv: kprobes: Remove duplication of RV_EXTRACT_ITYPE_IMM ... |
||
|
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
...
|
||
|
Linus Torvalds
|
fe68bb2861 |
Merge tag 'microblaze-v6.18' of git://git.monstr.eu/linux-2.6-microblaze
Pull microblaze updates from Michal Simek: - Fix typos in Kconfig - s/__ASSEMBLY__/__ASSEMBLER__/g * tag 'microblaze-v6.18' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers microblaze: Replace __ASSEMBLY__ with __ASSEMBLER__ in uapi headers microblaze: fix typos in Kconfig |
||
|
Linus Torvalds
|
46a1b6b2aa |
Merge tag 'nios2_update_for_v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux
Pull NIOS2 updates from Dinh Nguyen: - Replace __ASSEMBLY__ with __ASSEMBLER__ in headers - Set memblock.current_limit when setting pfn limits * tag 'nios2_update_for_v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux: nios2: ensure that memblock.current_limit is set when setting pfn limits nios2: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers nios2: Replace __ASSEMBLY__ with __ASSEMBLER__ in uapi headers |
||
|
Linus Torvalds
|
e129e479f2 |
Merge tag 'pstore-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull tiny pstore update from Kees Cook: - Clarify various comments for better understanding (Eugen Hristev) * tag 'pstore-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: pstore/zone: rewrite some comments for better understanding |
||
|
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
|
||
|
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 |
||
|
Linus Torvalds
|
50157eaa0c |
Merge tag 'execve-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull execve updates from Kees Cook: - binfmt_elf: preserve original ELF e_flags for core dumps (Svetlana Parfenova) - exec: Fix incorrect type for ret (Xichao Zhao) - binfmt_elf: Replace offsetof() with struct_size() in fill_note_info() (Xichao Zhao) * tag 'execve-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: binfmt_elf: preserve original ELF e_flags for core dumps binfmt_elf: Replace offsetof() with struct_size() in fill_note_info() exec: Fix incorrect type for ret |
||
|
Linus Torvalds
|
8c1ed30218 |
Merge tag 'ffs-const-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull ffs const-attribute cleanups from Kees Cook:
"While working on various hardening refactoring a while back we
encountered inconsistencies in the application of __attribute_const__
on the ffs() family of functions.
This series fixes this across all archs and adds KUnit tests.
Notably, this found a theoretical underflow in PCI (also fixed here)
and uncovered an inefficiency in ARC (fixed in the ARC arch PR). I
kept the series separate from the general hardening PR since it is a
stand-alone "topic".
- PCI: Fix theoretical underflow in use of ffs().
- Universally apply __attribute_const__ to all architecture's
ffs()-family of functions.
- Add KUnit tests for ffs() behavior and const-ness"
* tag 'ffs-const-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
KUnit: ffs: Validate all the __attribute_const__ annotations
sparc: Add __attribute_const__ to ffs()-family implementations
xtensa: Add __attribute_const__ to ffs()-family implementations
s390: Add __attribute_const__ to ffs()-family implementations
parisc: Add __attribute_const__ to ffs()-family implementations
mips: Add __attribute_const__ to ffs()-family implementations
m68k: Add __attribute_const__ to ffs()-family implementations
openrisc: Add __attribute_const__ to ffs()-family implementations
riscv: Add __attribute_const__ to ffs()-family implementations
hexagon: Add __attribute_const__ to ffs()-family implementations
alpha: Add __attribute_const__ to ffs()-family implementations
sh: Add __attribute_const__ to ffs()-family implementations
powerpc: Add __attribute_const__ to ffs()-family implementations
x86: Add __attribute_const__ to ffs()-family implementations
csky: Add __attribute_const__ to ffs()-family implementations
bitops: Add __attribute_const__ to generic ffs()-family implementations
KUnit: Introduce ffs()-family tests
PCI: Test for bit underflow in pcie_set_readrq()
|
||
|
Linus Torvalds
|
1896ce8eb6 |
Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
Pull interleaved SHA-256 hashing support from Eric Biggers: "Optimize fsverity with 2-way interleaved hashing Add support for 2-way interleaved SHA-256 hashing to lib/crypto/, and make fsverity use it for faster file data verification. This improves fsverity performance on many x86_64 and arm64 processors. Later, I plan to make dm-verity use this too" * tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux: fsverity: Use 2-way interleaved SHA-256 hashing when supported fsverity: Remove inode parameter from fsverity_hash_block() lib/crypto: tests: Add tests and benchmark for sha256_finup_2x() lib/crypto: x86/sha256: Add support for 2-way interleaved hashing lib/crypto: arm64/sha256: Add support for 2-way interleaved hashing lib/crypto: sha256: Add support for 2-way interleaved hashing |
||
|
Linus Torvalds
|
d8768fb12a |
Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library updates from Eric Biggers: - Add a RISC-V optimized implementation of Poly1305. This code was written by Andy Polyakov and contributed by Zhihang Shao. - Migrate the MD5 code into lib/crypto/, and add KUnit tests for MD5. Yes, it's still the 90s, and several kernel subsystems are still using MD5 for legacy use cases. As long as that remains the case, it's helpful to clean it up in the same way as I've been doing for other algorithms. Later, I plan to convert most of these users of MD5 to use the new MD5 library API instead of the generic crypto API. - Simplify the organization of the ChaCha, Poly1305, BLAKE2s, and Curve25519 code. Consolidate these into one module per algorithm, and centralize the configuration and build process. This is the same reorganization that has already been successful for SHA-1 and SHA-2. - Remove the unused crypto_kpp API for Curve25519. - Migrate the BLAKE2s and Curve25519 self-tests to KUnit. - Always enable the architecture-optimized BLAKE2s code. * tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (38 commits) crypto: md5 - Implement export_core() and import_core() wireguard: kconfig: simplify crypto kconfig selections lib/crypto: tests: Enable Curve25519 test when CRYPTO_SELFTESTS lib/crypto: curve25519: Consolidate into single module lib/crypto: curve25519: Move a couple functions out-of-line lib/crypto: tests: Add Curve25519 benchmark lib/crypto: tests: Migrate Curve25519 self-test to KUnit crypto: curve25519 - Remove unused kpp support crypto: testmgr - Remove curve25519 kpp tests crypto: x86/curve25519 - Remove unused kpp support crypto: powerpc/curve25519 - Remove unused kpp support crypto: arm/curve25519 - Remove unused kpp support crypto: hisilicon/hpre - Remove unused curve25519 kpp support lib/crypto: tests: Add KUnit tests for BLAKE2s lib/crypto: blake2s: Consolidate into single C translation unit lib/crypto: blake2s: Move generic code into blake2s.c lib/crypto: blake2s: Always enable arch-optimized BLAKE2s code lib/crypto: blake2s: Remove obsolete self-test lib/crypto: x86/blake2s: Reduce size of BLAKE2S_SIGMA2 lib/crypto: chacha: Consolidate into single module ... |
||
|
Linus Torvalds
|
e2fffe1d95 |
Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull CRC updates from Eric Biggers: "Update crc_kunit to test the CRC functions in softirq and hardirq contexts, similar to what the lib/crypto/ KUnit tests do. Move the helper function needed to do this into a common header. This is useful mainly to test fallback code paths for when FPU/SIMD/vector registers are unusable" * tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: Documentation/staging: Fix typo and incorrect citation in crc32.rst lib/crc: Drop inline from all *_mod_init_arch() functions lib/crc: Use underlying functions instead of crypto_simd_usable() lib/crc: crc_kunit: Test CRC computation in interrupt contexts kunit, lib/crypto: Move run_irq_test() to common header |
||
|
Linus Torvalds
|
d60ac92c10 |
Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux
Pull fscrypt updates from Eric Biggers: "Make fs/crypto/ use the HMAC-SHA512 library functions instead of crypto_shash. This is simpler, faster, and more reliable" * tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux: fscrypt: use HMAC-SHA512 library for HKDF fscrypt: Remove redundant __GFP_NOWARN |
||
|
Linus Torvalds
|
a769648f46 |
Merge tag 'dlm-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm
Pull dlm updates from David Teigland: "This adds a dlm_release_lockspace() flag to request that node-failure recovery be performed for the node leaving the lockspace. The implementation of this flag requires coordination with userland clustering components. It's been requested for use by GFS2" * tag 'dlm-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm: dlm: check for undefined release_option values dlm: handle release_option as unsigned dlm: move to rinfo for all middle conversion cases dlm: handle invalid lockspace member remove dlm: add new flag DLM_RELEASE_RECOVER for dlm_lockspace_release dlm: add new configfs entry release_recover for lockspace members dlm: add new RELEASE_RECOVER uevent attribute for release_lockspace dlm: use defines for force values in dlm_release_lockspace dlm: check for defined force value in dlm_lockspace_release |
||
|
Linus Torvalds
|
5928397f57 |
Merge tag 'erofs-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang: - Support FS_IOC_GETFSLABEL ioctl - Stop meaningless read-more policy on fragment extents - Remove a duplicate check for ztailpacking inline * tag 'erofs-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: erofs: drop redundant sanity check for ztailpacking inline erofs: Add support for FS_IOC_GETFSLABEL erofs: avoid reading more for fragment maps |
||
|
Linus Torvalds
|
b3e1c7855e |
Merge tag 'hfs-v6.18-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/hfs
Pull hfs updates from Viacheslav Dubeyko:
"This contains several fixes of syzbot reported issues, HFS/HFS+ fixes
of xfstests failures, and rework of HFS/HFS+ debug output subsystem.
- Kang Chen fixed a slab-out-of-bounds issue in hfsplus_uni2asc()
when hfsplus_uni2asc() is called from hfsplus_listxattr().
- Yang Chenzhi fixed a crash in hfsplus_bmap_alloc() if record offset
or length is larger than node_size.
- Yangtao Li corrected the error code from hfsplus_fill_super() if
Catalog File contains corrupted record for the case of hidden
directory's type.
- KMSAN uninit-value fixes: hfs_find_set_zero_bits() and
__hfsplus_ext_cache_extent() use kzalloc() instead of kmalloc(),
and in hfsplus_delete_cat() by proper initialization of struct
hfsplus_inode_info in the hfsplus_iget() logic.
- A slab-out-of-bounds issue could happen in hfsplus_strcasecmp() if
the length field of struct hfsplus_unistr is bigger than
HFSPLUS_MAX_STRLEN. Fixed by checking the length of comparing
strings, and if the strings' length is bigger than
HFSPLUS_MAX_STRLEN, then the length is corrected to this value.
- The generic/736 xfstest failed for HFS because the HFS volume
becomes corrupted after the test run.
The main reason was the absence of logic that corrects
mdb->drNxtCNID/HFS_SB(sb)->next_id (next unused CNID) after
deleting a record in Catalog File. That was fixed by implementing
the necessary logic in hfs_correct_next_unused_CNID()"
* tag 'hfs-v6.18-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/hfs:
hfs/hfsplus: rework debug output subsystem
hfsplus: fix slab-out-of-bounds read in hfsplus_strcasecmp()
hfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc()
hfs: clear offset and space out of valid records in b-tree node
hfs: add logic of correcting a next unused CNID
hfsplus: fix KMSAN uninit-value issue in hfsplus_delete_cat()
hfs: fix KMSAN uninit-value issue in hfs_find_set_zero_bits()
hfs: make proper initalization of struct hfs_find_data
hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent()
hfs: validate record offset in hfsplus_bmap_alloc
hfsplus: return EIO when type of hidden directory mismatch in hfsplus_fill_super()
MAINTAINERS: update location of hfs&hfsplus trees
|
||
|
Linus Torvalds
|
a9401710a5 |
Merge tag 'v6.18-rc-part1-smb3-common' of git://git.samba.org/ksmbd
Pull smb restructuring updates from Steve French:
"Large set of small restructuring smbdirect related patches for cifs.ko
and ksmbd.ko.
This is the next step in order to use common structures for smbdirect
handling across both modules. And also includes improved handling of
broken connections, as well as fixed negotiation as rdma resources.
Moving to common functions is planned for 6.19, as well as also
providing smbdirect via sockets to userspace (e.g. for samba to also
be able to use smbdirect for userspace server and userspace client
tools).
This was heavily reviewed and tested at the recent SMB3.1.1 test event
at SDC"
* tag 'v6.18-rc-part1-smb3-common' of git://git.samba.org/ksmbd: (159 commits)
smb: server: let smb_direct_flush_send_list() invalidate a remote key first
smb: server: make use of ib_alloc_cq_any() instead of ib_alloc_cq()
smb: server: make consitent use of spin_lock_irq{save,restore}() in transport_rdma.c
smb: server: let {free_transport,smb_direct_disconnect_rdma_{work,connection}}() wake up all wait queues
smb: server: let smb_direct_disconnect_rdma_connection() disable all work but disconnect_work
smb: server: fill in smbdirect_socket.first_error on error
smb: server: let smb_direct_disconnect_rdma_connection() set SMBDIRECT_SOCKET_ERROR...
smb: server: pass struct smbdirect_socket to smb_direct_send_negotiate_response()
smb: server: pass struct smbdirect_socket to {enqueue,get_first}_reassembly()
smb: server: pass struct smbdirect_socket to smb_direct_post_send_data()
smb: server: pass struct smbdirect_socket to post_sendmsg()
smb: server: pass struct smbdirect_socket to smb_direct_create_header()
smb: server: pass struct smbdirect_socket to manage_keep_alive_before_sending()
smb: server: pass struct smbdirect_socket to manage_credits_prior_sending()
smb: server: pass struct smbdirect_socket to calc_rw_credits()
smb: server: pass struct smbdirect_socket to wait_for_rw_credits()
smb: server: pass struct smbdirect_socket to wait_for_send_credits()
smb: server: pass struct smbdirect_socket to wait_for_credits()
smb: server: pass struct smbdirect_socket to smb_direct_flush_send_list()
smb: server: pass struct smbdirect_socket to smb_direct_post_send()
...
|
||
|
Linus Torvalds
|
e445fba2d7 |
Merge tag 'xfs-merge-6.18' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Carlos Maiolino:
"For this merge window, there are really no new features, but there are
a few things worth to emphasize:
- Deprecated for years already, the (no)attr2 and (no)ikeep mount
options have been removed for good
- Several cleanups (specially from typedefs) and bug fixes
- Improvements made in the online repair reap calculations
- online fsck is now enabled by default"
* tag 'xfs-merge-6.18' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (53 commits)
xfs: rework datasync tracking and execution
xfs: rearrange code in xfs_inode_item_precommit
xfs: scrub: use kstrdup_const() for metapath scan setups
xfs: use bt_nr_sectors in xfs_dax_translate_range
xfs: track the number of blocks in each buftarg
xfs: constify xfs_errortag_random_default
xfs: improve default maximum number of open zones
xfs: improve zone statistics message
xfs: centralize error tag definitions
xfs: remove pointless externs in xfs_error.h
xfs: remove the expr argument to XFS_TEST_ERROR
xfs: remove xfs_errortag_set
xfs: remove xfs_errortag_get
xfs: move the XLOG_REG_ constants out of xfs_log_format.h
xfs: adjust the hint based zone allocation policy
xfs: refactor hint based zone allocation
fs: add an enum for number of life time hints
xfs: fix log CRC mismatches between i386 and other architectures
xfs: rename the old_crc variable in xlog_recover_process
xfs: remove the unused xfs_log_iovec_t typedef
...
|
||
|
Linus Torvalds
|
a40eb50a95 |
Merge tag 'gfs2-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher: - Partially revert "gfs2: do_xmote fixes" to ignore dlm_lock() errors during withdraw; passing on those errors doesn't help - Change the LM_FLAG_TRY and LM_FLAG_TRY_1CB logic in add_to_queue() to check if the holder would actually block - Move some more dlm specific code from glock.c to lock_dlm.c - Remove the unused dlm alternate locking mode code - Add proper locking to make sure that dlm lockspaces are never used after being released - Various other cleanups * tag 'gfs2-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: gfs2: Fix unlikely race in gdlm_put_lock gfs2: Add proper lockspace locking gfs2: Minor run_queue fixes gfs2: run_queue cleanup gfs2: Simplify do_promote gfs2: Get rid of GLF_INVALIDATE_IN_PROGRESS gfs2: Fix GLF_INVALIDATE_IN_PROGRESS flag clearing in do_xmote gfs2: Remove duplicate check in do_xmote gfs2: Fix LM_FLAG_TRY* logic in add_to_queue gfs2: Remove DLM_LKF_ALTCW / DLM_LKF_ALTPR code gfs2: Further sanitize lock_dlm.c gfs2: Do not use atomic operations unnecessarily gfs2: Sanitize gfs2_meta_check, gfs2_metatype_check, gfs2_io_error gfs2: Turn gfs2_withdraw into a void function gfs2: Partially revert "gfs2: do_xmote fixes" gfs2: Simplify refcounting in do_xmote gfs2: do_xmote cleanup gfs2: Remove space before newline gfs2: Remove unused sd_withdraw_wait field gfs2: Remove unused GIF_FREE_VFS_INODE flag |
||
|
Linus Torvalds
|
f2c61db29f |
Remove bcachefs core code
bcachefs was marked 'externally maintained' in 6.17 but the code remained to make the transition smoother. It's now a DKMS module, making the in-kernel code stale, so remove it to avoid any version confusion. Link: https://lore.kernel.org/linux-bcachefs/yokpt2d2g2lluyomtqrdvmkl3amv3kgnipmenobkpgx537kay7@xgcgjviv3n7x/T/ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
ee916dccd4 |
Unbreak 'make tools/*' for user-space targets
This pattern isn't very documented, and apparently not used much outside
of 'make tools/help', but it has existed for over a decade (since commit
|
||
|
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
|
263e777ee3 |
Merge tag 'vfs-6.18-rc1.writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs writeback updates from Christian Brauner:
"This contains work adressing lockups reported by users when a systemd
unit reading lots of files from a filesystem mounted with the lazytime
mount option exits.
With the lazytime mount option enabled we can be switching many dirty
inodes on cgroup exit to the parent cgroup. The numbers observed in
practice when systemd slice of a large cron job exits can easily reach
hundreds of thousands or millions.
The logic in inode_do_switch_wbs() which sorts the inode into
appropriate place in b_dirty list of the target wb however has linear
complexity in the number of dirty inodes thus overall time complexity
of switching all the inodes is quadratic leading to workers being
pegged for hours consuming 100% of the CPU and switching inodes to the
parent wb.
Simple reproducer of the issue:
FILES=10000
# Filesystem mounted with lazytime mount option
MNT=/mnt/
echo "Creating files and switching timestamps"
for (( j = 0; j < 50; j ++ )); do
mkdir $MNT/dir$j
for (( i = 0; i < $FILES; i++ )); do
echo "foo" >$MNT/dir$j/file$i
done
touch -a -t 202501010000 $MNT/dir$j/file*
done
wait
echo "Syncing and flushing"
sync
echo 3 >/proc/sys/vm/drop_caches
echo "Reading all files from a cgroup"
mkdir /sys/fs/cgroup/unified/mycg1 || exit
echo $$ >/sys/fs/cgroup/unified/mycg1/cgroup.procs || exit
for (( j = 0; j < 50; j ++ )); do
cat /mnt/dir$j/file* >/dev/null &
done
wait
echo "Switching wbs"
# Now rmdir the cgroup after the script exits
This can be solved by:
- Avoiding contention on the wb->list_lock when switching inodes by
running a single work item per wb and managing a queue of items
switching to the wb
- Allowing rescheduling when switching inodes over to a different
cgroup to avoid softlockups
- Maintaining the b_dirty list ordering instead of sorting it"
* tag 'vfs-6.18-rc1.writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
writeback: Add tracepoint to track pending inode switches
writeback: Avoid excessively long inode switching times
writeback: Avoid softlockup when switching many inodes
writeback: Avoid contention on wb->list_lock when switching inodes
|
||
|
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 ... |