Masami Hiramatsu (Google) ee93c91482 tracing: Fix to set write permission to per-cpu buffer_size_kb ...

[ Upstream commit f844282dee ]

Since the per-cpu buffer_size_kb file is writable for changing
per-cpu ring buffer size, the file should have the write access
permission.

Cc: stable@vger.kernel.org
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/177071301597.2293046.11683339475076917920.stgit@mhiramat.tok.corp.google.com
Fixes: 21ccc9cd72 ("tracing: Disable "other" permission bits in the tracefs files")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2026-03-04 07:20:54 -05:00

..

bpf

bpf: verifier improvement in 32bit shift sign extension pattern

2026-03-04 07:20:16 -05:00

cgroup

cpuset: Fix missing adaptation for cpuset_is_populated

2026-02-19 16:25:20 +01:00

configs

…

debug

kdb: Do not assume write() callback available

2025-02-21 13:50:09 +01:00

dma

dma/pool: distinguish between missing and exhausted atomic pools

2026-02-06 16:44:16 +01:00

entry

entry: Respect changes to system call number by trace_sys_enter()

2024-04-03 15:19:44 +02:00

events

uprobe: Do not emulate/sstep original instruction when ip is changed

2025-12-07 06:12:17 +09:00

futex

futex: Don't leak robust_list pointer on exec race

2025-12-07 06:12:16 +09:00

gcov

gcov: add support for GCC 15

2025-12-07 06:12:35 +09:00

irq

genirq/irq_sim: Initialize work context pointers properly

2026-02-06 16:44:22 +01:00

kcsan

kcsan: test: Initialize dummy variable

2025-08-15 12:04:59 +02:00

livepatch

livepatch: Match old_sympos 0 and 1 in klp_find_func()

2026-01-11 15:18:40 +01:00

locking

locking/spinlock/debug: Fix data-race in do_raw_write_lock

2026-01-11 15:18:13 +01:00

module

module: add helper function for reading module_buildid()

2026-03-04 07:19:40 -05:00

power

PM: sleep: console: Fix the black screen issue

2025-08-28 16:25:53 +02:00

printk

printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX

2025-02-21 13:49:30 +01:00

rcu

rcu: Protect ->defer_qs_iw_pending from data race

2025-08-28 16:25:55 +02:00

sched

sched/rt: Skip currently executing CPU in rto_next_cpu()

2026-03-04 07:19:31 -05:00

time

timers: Replace in_irq() with in_hardirq()

2026-03-04 07:19:43 -05:00

trace

tracing: Fix to set write permission to per-cpu buffer_size_kb

2026-03-04 07:20:54 -05:00

.gitignore

…

acct.c

acct: block access to kernel internal filesystems

2025-03-07 16:56:39 +01:00

async.c

async: Introduce async_schedule_dev_nocall()

2024-01-31 16:17:00 -08:00

audit_fsnotify.c

…

audit_tree.c

…

audit_watch.c

audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()

2023-11-28 17:07:08 +00:00

audit.c

audit: Send netlink ACK before setting connection in auditd_set

2024-02-05 20:12:47 +00:00

audit.h

audit: avoid missing-prototype warnings

2026-03-04 07:19:20 -05:00

auditfilter.c

ima: Avoid blocking in RCU read-side critical section

2024-07-11 12:47:16 +02:00

auditsc.c

audit,io_uring: io_uring openat triggers audit reference count underflow

2023-10-25 12:03:04 +02:00

backtracetest.c

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bounds.c

bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS

2024-05-02 16:29:32 +02:00

capability.c

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cfi.c

…

compat.c

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configs.c

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context_tracking.c

…

cpu_pm.c

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cpu.c

hrtimers: Handle CPU state correctly on hotplug

2025-01-23 17:17:15 +01:00

crash_core.c

…

crash_dump.c

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cred.c

cred: switch to using atomic_long_t

2023-12-20 17:00:20 +01:00

delayacct.c

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dma.c

…

exec_domain.c

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exit.c

perf: Fix sample vs do_exit()

2025-06-27 11:07:41 +01:00

extable.c

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fail_function.c

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fork.c

kernel/fork: only call untrack_pfn_clear() on VMAs duplicated for fork()

2026-01-11 15:19:27 +01:00

freezer.c

…

gen_kheaders.sh

kheaders: Ignore silly-rename files

2025-01-23 17:17:11 +01:00

groups.c

…

hung_task.c

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iomem.c

…

irq_work.c

…

jump_label.c

jump_label: Fix static_key_slow_dec() yet again

2024-10-17 15:21:29 +02:00

kallsyms_internal.h

kallsyms: Reduce the memory occupied by kallsyms_seqs_of_names[]

2023-10-25 12:03:16 +02:00

kallsyms.c

kallsyms/ftrace: set module buildid in ftrace_mod_address_lookup()

2026-03-04 07:19:40 -05:00

kcmp.c

…

Kconfig.freezer

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Kconfig.hz

…

Kconfig.locks

…

Kconfig.preempt

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kcov.c

kcov: mark in_softirq_really() as __always_inline

2025-01-09 13:30:05 +01:00

kexec_core.c

…

kexec_elf.c

kexec: initialize ELF lowest address to ULONG_MAX

2025-04-10 14:33:36 +02:00

kexec_file.c

kexec: derive purgatory entry from symbol

2026-03-04 07:20:50 -05:00

kexec_internal.h

…

kexec.c

kernel: kexec: copy user-array safely

2023-11-28 17:06:57 +00:00

kheaders.c

…

kmod.c

…

kprobes.c

kprobes: Fix to check symbol prefixes correctly

2024-08-14 13:52:54 +02:00

ksysfs.c

…

kthread.c

kthread: unpark only parked kthread

2024-10-17 15:22:28 +02:00

latencytop.c

…

Makefile

kernel/numa.c: Move logging out of numa.h

2024-06-12 11:03:16 +02:00

module_signature.c

…

notifier.c

…

nsproxy.c

…

numa.c

kernel/numa.c: Move logging out of numa.h

2024-06-12 11:03:16 +02:00

padata.c

padata: Reset next CPU when reorder sequence wraps around

2025-10-29 14:04:40 +01:00

panic.c

panic: Flush kernel log buffer at the end

2024-04-13 13:04:54 +02:00

params.c

module: ensure that kobject_put() is safe for module type kobjects

2025-05-18 08:21:23 +02:00

pid_namespace.c

pid: Replace struct pid 1-element array with flex-array

2024-08-29 17:30:18 +02:00

pid.c

pid: Add a judgment for ns null in pid_nr_ns

2025-10-19 16:23:22 +02:00

profile.c

profiling: remove profile=sleep support

2024-08-14 13:52:50 +02:00

ptrace.c

…

range.c

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reboot.c

kernel/reboot: emergency_restart: Set correct system_state

2023-11-28 17:07:13 +00:00

regset.c

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relay.c

…

resource_kunit.c

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resource.c

Reinstate "resource: avoid unnecessary lookups in find_next_iomem_res()"

2026-01-11 15:18:32 +01:00

rseq.c

rseq: Protect event mask against membarrier IPI

2025-10-19 16:23:21 +02:00

scftorture.c

scftorture: Forgive memory-allocation failure if KASAN

2023-09-23 11:11:00 +02:00

scs.c

scs: fix a wrong parameter in __scs_magic

2026-01-11 15:18:54 +01:00

seccomp.c

seccomp: Fix a race with WAIT_KILLABLE_RECV if the tracer replies too fast

2025-10-15 11:56:25 +02:00

signal.c

signal: restore the override_rlimit logic

2024-11-14 13:15:18 +01:00

smp.c

smp: Fix up and expand the smp_call_function_many() kerneldoc

2025-10-15 11:56:29 +02:00

smpboot.c

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smpboot.h

…

softirq.c

softirq: Add trace points for tasklet entry/exit

2025-12-07 06:12:34 +09:00

stackleak.c

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stacktrace.c

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static_call_inline.c

x86/static-call: provide a way to do very early static-call updates

2024-12-19 18:08:58 +01:00

static_call.c

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stop_machine.c

…

sys_ni.c

syscalls: fix compat_sys_io_pgetevents_time64 usage

2024-07-05 09:31:59 +02:00

sys.c

kernel/sys.c: fix the racy usage of task_lock(tsk->group_leader) in sys_prlimit64() paths

2025-10-19 16:23:14 +02:00

sysctl-test.c

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sysctl.c

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task_work.c

task_work: Introduce task_work_cancel() again

2024-08-03 08:49:34 +02:00

taskstats.c

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torture.c

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tracepoint.c

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tsacct.c

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ucount.c

ucount: check for CAP_SYS_RESOURCE using ns_capable_noaudit()

2026-03-04 07:19:42 -05:00

uid16.c

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uid16.h

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umh.c

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up.c

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user_namespace.c

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user-return-notifier.c

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user.c

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usermode_driver.c

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utsname_sysctl.c

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utsname.c

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watch_queue.c

watch_queue: fix pipe accounting mismatch

2025-04-10 14:33:30 +02:00

watchdog_hld.c

watchdog/perf: properly initialize the turbo mode timestamp and rearm counter

2024-08-03 08:49:42 +02:00

watchdog.c

watchdog: move softlockup_panic back to early_param

2023-11-28 17:07:09 +00:00

workqueue_internal.h

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workqueue.c

workqueue: Improve scalability of workqueue watchdog touch

2024-09-12 11:10:27 +02:00