[PATCH] perf test x86: Fit memory leak in sample_ustack()

[Masanari Iida]

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

Signed-off-by: Masanari Iida <standby24x7@xxxxxxxxx>
---
 tools/perf/arch/x86/tests/dwarf-unwind.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c
index b602ad9..68f2711 100644
--- a/tools/perf/arch/x86/tests/dwarf-unwind.c
+++ b/tools/perf/arch/x86/tests/dwarf-unwind.c
@@ -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");
+		kfree(buf);
 		return -1;
 	}
 
-- 
1.9.2.468.g3f0c02a

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