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perf tests x86: Fix memory leak in sample_ustack()

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The buf is not freed, when kernel failed to get stack map
and return.

Signed-off-by: Masanari Iida <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Jiri Olsa <[email protected]>
This commit is contained in:
Masanari Iida 2014-04-20 00:16:41 +09:00 • committed by Jiri Olsa
commit 763d7f5f27
1 changed files with 1 additions and 0 deletions
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1
tools/perf/arch/x86/tests/dwarf-unwind.c
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@ -26,6 +26,7 @@ static int sample_ustack(struct perf_sample *sample,
map = map_groups__find(&thread->mg, MAP__FUNCTION, (u64) sp);
if (!map) {
pr_debug("failed to get stack map\n");
free(buf);
return -1;
}