From: Gaurav Singh <[email protected]>
[ Upstream commit 11b6e5482e178055ec1f2444b55f2518713809d1 ]
The 'evname' variable can be NULL, as it is checked a few lines back,
check it before using.
Fixes: 9e207ddfa207 ("perf report: Show call graph from reference events")
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lore.kernel.org/lkml/
Signed-off-by: Gaurav Singh <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
tools/perf/builtin-report.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 4d8db41b949a4..d3c0b04e2e22b 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -462,8 +462,7 @@ static size_t hists__fprintf_nr_sample_events(struct hists
*hists, struct report
if (rep->time_str)
ret += fprintf(fp, " (time slices: %s)", rep->time_str);
- if (symbol_conf.show_ref_callgraph &&
- strstr(evname, "call-graph=no")) {
+ if (symbol_conf.show_ref_callgraph && evname && strstr(evname,
"call-graph=no")) {
ret += fprintf(fp, ", show reference callgraph");
}
--
2.25.1
