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| author | Namhyung Kim <namhyung.kim@lge.com> | 2012-01-20 10:12:45 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2012-01-21 09:33:41 +0100 |
| commit | fd45c15f13e754f3c106427e857310f3e0813951 (patch) | |
| tree | 18c02a2b1037b773813b2f20fc4d826d7645ad96 /kernel/events/callchain.c | |
| parent | dcd6c92267155e70a94b3927bce681ce74b80d1f (diff) | |
| download | lwn-fd45c15f13e754f3c106427e857310f3e0813951.tar.gz lwn-fd45c15f13e754f3c106427e857310f3e0813951.zip | |
perf: Don't call release_callchain_buffers() if allocation fails
When alloc_callchain_buffers() fails, it frees all of
entries before return. In addition, calling the
release_callchain_buffers() will cause a NULL pointer
dereference since callchain_cpu_entries is not set.
Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Link: http://lkml.kernel.org/r/1327021966-27688-1-git-send-email-namhyung.kim@lge.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/events/callchain.c')
| -rw-r--r-- | kernel/events/callchain.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c index 057e24b665cf..6581a040f399 100644 --- a/kernel/events/callchain.c +++ b/kernel/events/callchain.c @@ -115,8 +115,6 @@ int get_callchain_buffers(void) } err = alloc_callchain_buffers(); - if (err) - release_callchain_buffers(); exit: mutex_unlock(&callchain_mutex); |