Peter Zijlstra 58b9cca673 perf: Fix PERF_EVENT_IOC_PERIOD migration race ...

commit c7999c6f3f upstream.

I ran the perf fuzzer, which triggered some WARN()s which are due to
trying to stop/restart an event on the wrong CPU.

Use the normal IPI pattern to ensure we run the code on the correct CPU.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: bad7192b84 ("perf: Fix PERF_EVENT_IOC_PERIOD to force-reset the period")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2015-09-13 09:07:39 -07:00

..

callchain.c

Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2014-10-15 07:48:18 +02:00

core.c

perf: Fix PERF_EVENT_IOC_PERIOD migration race

2015-09-13 09:07:39 -07:00

hw_breakpoint.c

perf: Remove type specific target pointers

2015-03-23 10:58:04 +01:00

internal.h

perf: Add wakeup watermark control to the AUX area

2015-04-02 17:14:16 +02:00

Makefile

ftrace: allow architectures to specify ftrace compile options

2015-01-29 09:19:19 +01:00

ring_buffer.c

perf: Fix double-free of the AUX buffer

2015-09-13 09:07:39 -07:00

uprobes.c

Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

2014-12-15 15:52:01 -08:00