Alexander Shishkin 96202569b9 perf/aux: Fix AUX output stopping ... commit f3a519e4ad upstream. Commit: 8a58ddae23 ("perf/core: Fix exclusive events' grouping") allows CAP_EXCLUSIVE events to be grouped with other events. Since all of those also happen to be AUX events (which is not the case the other way around, because arch/s390), this changes the rules for stopping the output: the AUX event may not be on its PMU's context any more, if it's grouped with a HW event, in which case it will be on that HW event's context instead. If that's the case, munmap() of the AUX buffer can't find and stop the AUX event, potentially leaving the last reference with the atomic context, which will then end up freeing the AUX buffer. This will then trip warnings: Fix this by using the context's PMU context when looking for events to stop, instead of the event's PMU context. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20191022073940.61814-1-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-10-29 09:20:03 +01:00
..
bpf	bpf: fix use after free in prog symbol exposure	2019-10-07 18:57:19 +02:00
cgroup	cgroup: Fix css_task_iter_advance_css_set() cset skip condition	2019-08-09 17:52:35 +02:00
configs
debug	kdb: Don't back trace on a cpu that didn't round up	2019-02-12 19:47:19 +01:00
dma	dma-direct: do not include SME mask in the DMA supported check	2019-01-13 09:51:05 +01:00
events	perf/aux: Fix AUX output stopping	2019-10-29 09:20:03 +01:00
gcov
irq	genirq: Prevent NULL pointer dereference in resend_irqs()	2019-09-19 09:09:34 +02:00
livepatch	livepatch: Nullify obj->mod in klp_module_coming()'s error path	2019-10-07 18:57:10 +02:00
locking	Revert "locking/pvqspinlock: Don't wait if vCPU is preempted"	2019-10-11 18:21:06 +02:00
power	x86/power: Fix 'nosmt' vs hibernation triple fault during resume	2019-06-11 12:20:52 +02:00
printk	printk: Do not lose last line in kmsg buffer dump	2019-10-05 13:10:01 +02:00
rcu	rcuperf: Fix cleanup path for invalid perf_type strings	2019-05-31 06:46:30 -07:00
sched	sched/core: Fix migration to invalid CPU in __set_cpus_allowed_ptr()	2019-10-11 18:21:22 +02:00
time	tick: broadcast-hrtimer: Fix a race in bc_set_next	2019-10-11 18:21:28 +02:00
trace	tracing: Get trace_array reference for available_tracers files	2019-10-17 13:45:41 -07:00
.gitignore
acct.c	acct_on(): don't mess with freeze protection	2019-05-31 06:46:05 -07:00
async.c
audit_fsnotify.c
audit_tree.c	\n	2018-08-17 09:41:28 -07:00
audit_watch.c	audit: fix use-after-free in audit_add_watch	2018-07-18 11:43:36 -04:00
audit.c	audit: use ktime_get_coarse_real_ts64() for timestamps	2018-07-17 14:45:08 -04:00
audit.h
auditfilter.c	audit: fix a memory leak bug	2019-05-31 06:46:17 -07:00
auditsc.c	audit/stable-4.18 PR 20180814	2018-08-15 10:46:54 -07:00
backtracetest.c
bounds.c	kbuild: fix kernel/bounds.c 'W=1' warning	2018-11-13 11:08:47 -08:00
capability.c
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c	cpu/hotplug: Fix out-of-bounds read when setting fail state	2019-07-21 09:03:11 +02:00
crash_core.c	kernel/crash_core.c: print timestamp using time64_t	2018-08-22 10:52:47 -07:00
crash_dump.c
cred.c	access: avoid the RCU grace period for the temporary subjective credentials	2019-07-31 07:27:11 +02:00
delayacct.c
dma.c
elfcore.c	kernel/elfcore.c: include proper prototypes	2019-10-11 18:21:23 +02:00
exec_domain.c
exit.c	cgroup: Call cgroup_release() before __exit_signal()	2019-08-09 17:52:34 +02:00
extable.c
fail_function.c
fork.c	kernel/sysctl.c: do not override max_threads provided by userspace	2019-10-17 13:45:19 -07:00
freezer.c	PM / reboot: Eliminate race between reboot and suspend	2018-08-06 12:35:20 +02:00
futex_compat.c
futex.c	locking/futex: Allow low-level atomic operations to return -EAGAIN	2019-05-10 17:54:11 +02:00
groups.c
hung_task.c	kernel: hung_task.c: disable on suspend	2019-04-20 09:16:02 +02:00
iomem.c
irq_work.c	irq_work: Do not raise an IPI when queueing work on the local CPU	2019-05-31 06:46:19 -07:00
jump_label.c	jump_label: move 'asm goto' support test to Kconfig	2019-06-04 08:02:34 +02:00
kallsyms.c	kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol	2019-09-21 07:17:02 +02:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt	kconfig: include kernel/Kconfig.preempt from init/Kconfig	2018-08-02 08:06:54 +09:00
kcov.c	kernel/kcov.c: mark write_comp_data() as notrace	2019-02-12 19:47:20 +01:00
kexec_core.c	kexec: bail out upon SIGKILL when allocating memory.	2019-10-07 18:57:28 +02:00
kexec_file.c
kexec_internal.h
kexec.c	kexec: add call to LSM hook in original kexec_load syscall	2018-07-16 12:31:57 -07:00
kmod.c
kprobes.c	kprobes: Prohibit probing on BUG() and WARN() address	2019-10-05 13:09:54 +02:00
ksysfs.c
kthread.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-08-13 11:25:07 -07:00
latencytop.c
Makefile	x86/uaccess, kcov: Disable stack protector	2019-06-19 08:18:01 +02:00
memremap.c	mm, devm_memremap_pages: add MEMORY_DEVICE_PRIVATE support	2019-01-13 09:51:04 +01:00
module_signing.c	modsign: log module name in the event of an error	2018-07-02 11:36:17 +02:00
module-internal.h	modsign: log module name in the event of an error	2018-07-02 11:36:17 +02:00
module.c	modules: fix compile error if don't have strict module rwx	2019-09-19 09:09:40 +02:00
notifier.c
nsproxy.c
padata.c	padata: use smp_mb in padata_reorder to avoid orphaned padata jobs	2019-07-26 09:14:25 +02:00
panic.c	panic: ensure preemption is disabled during panic()	2019-10-17 13:44:46 -07:00
params.c
pid_namespace.c	signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig	2019-07-26 09:14:01 +02:00
pid.c	Fix failure path in alloc_pid()	2019-01-13 09:51:06 +01:00
profile.c
ptrace.c	ptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME	2019-07-10 09:53:41 +02:00
range.c
reboot.c	PM / reboot: Eliminate race between reboot and suspend	2018-08-06 12:35:20 +02:00
relay.c	relay: check return of create_buf_file() properly	2019-03-13 14:02:35 -07:00
resource.c	resource: fix locking in find_next_iomem_res()	2019-09-16 08:22:20 +02:00
rseq.c	rseq: uapi: Declare rseq_cs field as union, update includes	2018-07-10 22:18:52 +02:00
seccomp.c
signal.c	kernel/signal.c: trace_signal_deliver when signal_group_exit	2019-06-09 09:17:20 +02:00
smp.c	cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM	2019-02-12 19:47:25 +01:00
smpboot.c	smpboot: Remove cpumask from the API	2018-07-03 09:20:44 +02:00
smpboot.h
softirq.c	nohz: Fix missing tick reprogram when interrupting an inline softirq	2018-08-03 15:52:10 +02:00
stacktrace.c
stop_machine.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-08-13 11:25:07 -07:00
sys_ni.c
sys.c	kernel/sys.c: prctl: fix false positive in validate_prctl_map()	2019-06-15 11:54:01 +02:00
sysctl_binary.c
sysctl.c	sysctl: return -EINVAL if val violates minmax	2019-06-15 11:53:59 +02:00
task_work.c
taskstats.c
test_kprobes.c
torture.c	torture: Keep old-school dmesg format	2018-06-25 11:30:10 -07:00
tracepoint.c	tracepoint: Fix tracepoint array element size mismatch	2018-10-17 15:35:29 -04:00
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c
up.c
user_namespace.c	userns: also map extents in the reverse map to kernel IDs	2018-11-13 11:09:00 -08:00
user-return-notifier.c
user.c	userns: use irqsave variant of refcount_dec_and_lock()	2018-08-22 10:52:47 -07:00
utsname_sysctl.c	sys: don't hold uts_sem while accessing userspace memory	2018-08-11 02:05:53 -05:00
utsname.c
watchdog_hld.c	watchdog: Mark watchdog touch functions as notrace	2018-08-30 12:56:40 +02:00
watchdog.c	watchdog: Respect watchdog cpumask on CPU hotplug	2019-04-03 06:26:29 +02:00
workqueue_internal.h
workqueue.c	workqueue: Try to catch flush_work() without INIT_WORK().	2019-05-02 09:58:56 +02:00