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| author | Peter Zijlstra <peterz@infradead.org> | 2014-10-02 16:17:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-02 16:28:44 -0700 |
| commit | 6c72e3501d0d62fc064d3680e5234f3463ec5a86 (patch) | |
| tree | 48b15a8bc67816fe492e1323580bf8ee99b29e81 /mm | |
| parent | cba5b1c6e2c42152135a85b90bf820b77d6527da (diff) | |
| download | linux-stable-6c72e3501d0d62fc064d3680e5234f3463ec5a86.tar.gz linux-stable-6c72e3501d0d62fc064d3680e5234f3463ec5a86.tar.bz2 linux-stable-6c72e3501d0d62fc064d3680e5234f3463ec5a86.zip | |
perf: fix perf bug in fork()
Oleg noticed that a cleanup by Sylvain actually uncovered a bug; by
calling perf_event_free_task() when failing sched_fork() we will not yet
have done the memset() on ->perf_event_ctxp[] and will therefore try and
'free' the inherited contexts, which are still in use by the parent
process. This is bad..
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Sylvain 'ythier' Hitier <sylvain.hitier@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions