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authorNamhyung Kim <namhyung.kim@lge.com>2012-10-15 12:39:42 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-10-16 13:05:07 -0300
commitffe10c6f95412da01695e659e967747333d5e812 (patch)
tree069316cfffaaf93e159b0df727f2c1d175a981d3 /tools
parent20b279ddb38ca42f8863cec07b4d45ec24589f13 (diff)
downloadvexpress-lsk-ffe10c6f95412da01695e659e967747333d5e812.tar.gz
perf tools: Fix segfault when using srcline sort key
The srcline sort key is for grouping samples based on their source file and line number. It use addr2line tool to get the information but it requires dso name. It caused a segfault when a sample does not have the name by dereferencing a NULL pointer. Fix it by using raw ip addresses for those samples. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1350272383-7016-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/sort.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index b5b1b921196..dd68f115d39 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -260,6 +260,9 @@ static int hist_entry__srcline_snprintf(struct hist_entry *self, char *bf,
if (path != NULL)
goto out_path;
+ if (!self->ms.map)
+ goto out_ip;
+
snprintf(cmd, sizeof(cmd), "addr2line -e %s %016" PRIx64,
self->ms.map->dso->long_name, self->ip);
fp = popen(cmd, "r");