1
linux/kernel
Peter Zijlstra 2ab9d83026 perf/aux: Fix AUX buffer serialization
Ole reported that event->mmap_mutex is strictly insufficient to
serialize the AUX buffer, add a per RB mutex to fully serialize it.

Note that in the lock order comment the perf_event::mmap_mutex order
was already wrong, that is, it nesting under mmap_lock is not new with
this patch.

Fixes: 45bfb2e504 ("perf: Add AUX area to ring buffer for raw data streams")
Reported-by: Ole <ole@binarygecko.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2024-09-04 18:22:56 +02:00
..
bpf bpf: Fix a kernel verifier crash in stacksafe() 2024-08-12 18:09:48 -07:00
cgroup cgroup/cpuset: Eliminate unncessary sched domains rebuilds in hotplug 2024-08-05 10:54:25 -10:00
configs mm/slab: Plumb kmem_buckets into __do_kmalloc_node() 2024-07-03 12:24:19 +02:00
debug kdb: Get rid of redundant kdb_curr_task() 2024-06-21 15:49:29 +01:00
dma dma-debug: avoid deadlock between dma debug vs printk and netconsole 2024-08-06 10:29:32 -07:00
entry
events perf/aux: Fix AUX buffer serialization 2024-09-04 18:22:56 +02:00
futex
gcov gcov: add support for GCC 14 2024-06-15 10:43:06 -07:00
irq genirq/irqdesc: Honor caller provided affinity in alloc_desc() 2024-08-07 17:27:00 +02:00
kcsan kcsan: Add missing MODULE_DESCRIPTION() macro 2024-06-06 11:21:14 -07:00
livepatch livepatch: Replace snprintf() with sysfs_emit() 2024-07-02 16:56:18 +02:00
locking bcachefs fixes for 6.11-rc3 2024-08-08 13:27:31 -07:00
module module: make waiting for a concurrent module loader interruptible 2024-08-09 08:33:28 -07:00
power mm: remove the implementation of swap_free() and always use swap_free_nr() 2024-07-03 19:30:01 -07:00
printk printk/panic: Allow cpu backtraces to be written into ringbuffer during panic 2024-08-13 14:16:22 +02:00
rcu Merge branches 'doc.2024.06.06a', 'fixes.2024.07.04a', 'mb.2024.06.28a', 'nocb.2024.06.03a', 'rcu-tasks.2024.06.06a', 'rcutorture.2024.06.06a' and 'srcu.2024.06.18a' into HEAD 2024-07-04 13:54:17 -07:00
sched profiling: remove profile=sleep support 2024-08-04 13:36:28 -07:00
time timekeeping: Fix bogus clock_was_set() invocation in do_adjtimex() 2024-08-05 16:14:14 +02:00
trace tracing: Return from tracing_buffers_read() if the file has been closed 2024-08-09 12:59:35 -04:00
.gitignore
acct.c
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c
audit.c
audit.h
auditfilter.c ima: Avoid blocking in RCU read-side critical section 2024-06-13 14:26:50 -04:00
auditsc.c
backtracetest.c backtracetest: add MODULE_DESCRIPTION() 2024-06-24 22:24:55 -07:00
bounds.c
capability.c
cfi.c
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c cpu/SMT: Enable SMT only if a core is online 2024-08-13 10:31:24 +10:00
crash_core.c Mainly singleton patches, documented in their respective changelogs. 2024-05-19 14:02:03 -07:00
crash_reserve.c crash: fix riscv64 crash memory reserve dead loop 2024-08-15 22:16:16 -07:00
cred.c
delayacct.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
dma.c
elfcorehdr.c
exec_domain.c
exit.c - 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN 2024-07-21 17:15:46 -07:00
exit.h
extable.c
fail_function.c
fork.c pidfd: prevent creation of pidfds for kthreads 2024-08-12 22:03:26 +02:00
freezer.c
gen_kheaders.sh kheaders: use command -v to test for existence of cpio 2024-05-30 01:13:20 +09:00
groups.c
hung_task.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
iomem.c
irq_work.c
jump_label.c jump_label: Fix the fix, brown paper bags galore 2024-07-31 12:57:39 +02:00
kallsyms_internal.h kallsyms: get rid of code for absolute kallsyms 2024-07-20 16:33:21 +09:00
kallsyms_selftest.c kallsyms: Match symbols exactly with CONFIG_LTO_CLANG 2024-08-15 09:33:35 -07:00
kallsyms_selftest.h
kallsyms.c kallsyms: Match symbols exactly with CONFIG_LTO_CLANG 2024-08-15 09:33:35 -07:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.kexec
Kconfig.locks
Kconfig.preempt
kcov.c kcov: properly check for softirq context 2024-08-07 18:33:56 -07:00
kexec_core.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
kexec_elf.c
kexec_file.c
kexec_internal.h
kexec.c
kheaders.c
kprobes.c kprobes: Fix to check symbol prefixes correctly 2024-08-05 14:04:03 +09:00
ksyms_common.c
ksysfs.c profiling: remove prof_cpu_mask 2024-07-29 10:45:54 -07:00
kthread.c
latencytop.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
Makefile
module_signature.c
notifier.c
nsproxy.c
numa.c
padata.c padata: Fix possible divide-by-0 panic in padata_mt_helper() 2024-08-07 18:33:56 -07:00
panic.c printk/panic: Allow cpu backtraces to be written into ringbuffer during panic 2024-08-13 14:16:22 +02:00
params.c
pid_namespace.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
pid_sysctl.h sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
pid.c
profile.c profiling: remove profile=sleep support 2024-08-04 13:36:28 -07:00
ptrace.c
range.c
reboot.c
regset.c regset: use kvzalloc() for regset_get_alloc() 2024-04-25 21:07:03 -07:00
relay.c
resource_kunit.c resource: add missing MODULE_DESCRIPTION() 2024-06-28 19:36:30 -07:00
resource.c resource: Export find_resource_space() 2024-05-28 11:14:14 -05:00
rseq.c
scftorture.c scftorture: Make torture_type static 2024-05-30 15:31:51 -07:00
scs.c
seccomp.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
signal.c kernel: rerun task_work while freezing in get_signal() 2024-07-11 01:51:44 -06:00
smp.c smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu() 2024-07-10 22:40:39 +02:00
smpboot.c
smpboot.h
softirq.c
stackleak.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
stacktrace.c
static_call_inline.c
static_call.c
stop_machine.c
sys_ni.c Probes updates for v6.11: 2024-07-18 12:19:20 -07:00
sys.c RISC-V Patches for the 6.10 Merge Window, Part 1 2024-05-22 09:56:00 -07:00
sysctl-test.c sysctl: Add module description to sysctl-testing 2024-06-03 15:20:37 +02:00
sysctl.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
task_work.c task_work: make TWA_NMI_CURRENT handling conditional on IRQ_WORK 2024-07-29 12:05:06 -07:00
taskstats.c taskstats: fill_stats_for_tgid: use for_each_thread() 2023-10-04 10:41:57 -07:00
torture.c torture: Add MODULE_DESCRIPTION() 2024-05-30 15:31:38 -07:00
tracepoint.c
tsacct.c tsacct: replace strncpy() with strscpy() 2024-07-12 16:39:53 -07:00
ucount.c sysctl changes for v6.10-rc1 2024-05-17 17:31:24 -07:00
uid16.c
uid16.h
umh.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
up.c
user_namespace.c
user-return-notifier.c
user.c
usermode_driver.c
utsname_sysctl.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
utsname.c
vhost_task.c vhost_task: Handle SIGKILL by flushing work and exiting 2024-05-22 08:31:15 -04:00
vmcore_info.c kallsyms: get rid of code for absolute kallsyms 2024-07-20 16:33:21 +09:00
watch_queue.c
watchdog_buddy.c
watchdog_perf.c watchdog/perf: properly initialize the turbo mode timestamp and rearm counter 2024-07-17 21:11:34 -07:00
watchdog.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
workqueue_internal.h
workqueue.c workqueue: Correct declaration of cpu_pwq in struct workqueue_struct 2024-08-05 18:34:02 -10:00