Peter Zijlstra f80747a43f perf: Fix hotplug splat ... commit e3703f8cdf upstream. Drew Richardson reported that he could make the kernel go *boom* when hotplugging while having perf events active. It turned out that when you have a group event, the code in __perf_event_exit_context() fails to remove the group siblings from the context. We then proceed with destroying and freeing the event, and when you re-plug the CPU and try and add another event to that CPU, things go *boom* because you've still got dead entries there. Reported-by: Drew Richardson <drew.richardson@arm.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/n/tip-k6v5wundvusvcseqj1si0oz0@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2014-03-11 16:10:02 -07:00
..
callchain.c	perf: Don't call release_callchain_buffers() if allocation fails	2012-01-21 09:33:41 +01:00
core.c	perf: Fix hotplug splat	2014-03-11 16:10:02 -07:00
hw_breakpoint.c	hw_breakpoint: Use cpu_possible_mask in {reserve,release}_bp_slot()	2013-07-03 10:59:01 -07:00
internal.h	perf: Fix mmap() accounting hole	2013-07-03 10:59:06 -07:00
Makefile	perf: Carve out callchain functionality	2011-11-14 13:31:26 +01:00
ring_buffer.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-01-08 13:21:22 -08:00