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Date:	Mon, 14 Jul 2014 13:02:35 +0300
From:	Adrian Hunter <>
To:	Arnaldo Carvalho de Melo <>
Cc:	Peter Zijlstra <>,, David Ahern <>,
	Frederic Weisbecker <>,
	Jiri Olsa <>,
	Namhyung Kim <>,
	Paul Mackerras <>,
	Stephane Eranian <>
Subject: [PATCH 11/41] perf tools: Fix appending a callchain from a previous sample

hist_entry__append_callchain() must check if the sample
has a callcahin or it will append the callchain from
a previous sample.

Signed-off-by: Adrian Hunter <>
 tools/perf/util/callchain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 48b6d3f..437ee09 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -626,7 +626,7 @@ int sample__resolve_callchain(struct perf_sample *sample, struct symbol **parent
 int hist_entry__append_callchain(struct hist_entry *he, struct perf_sample *sample)
-	if (!symbol_conf.use_callchain)
+	if (!symbol_conf.use_callchain || sample->callchain == NULL)
 		return 0;
 	return callchain_append(he->callchain, &callchain_cursor, sample->period);

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