From: Gaurav Singh <gaurav1...@gmail.com>
[ 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 <adrian.hun...@intel.com>
Cc: Alexander Shishkin <alexander.shish...@linux.intel.com>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Kan Liang <kan.li...@intel.com>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Peter Zijlstra <pet...@infradead.org>
Link: http://lore.kernel.org/lkml/
Signed-off-by: Gaurav Singh <gaurav1...@gmail.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
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
