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perf report: Fix NULL pointer dereference in hists__fprintf_nr_sample_events()
[ Upstream commit11b6e5482e
] The 'evname' variable can be NULL, as it is checked a few lines back, check it before using. Fixes:9e207ddfa2
("perf report: Show call graph from reference events") Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/ Signed-off-by: Gaurav Singh <gaurav1086@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 1 additions and 2 deletions
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@ -462,8 +462,7 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
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if (rep->time_str)
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ret += fprintf(fp, " (time slices: %s)", rep->time_str);
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if (symbol_conf.show_ref_callgraph &&
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strstr(evname, "call-graph=no")) {
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if (symbol_conf.show_ref_callgraph && evname && strstr(evname, "call-graph=no")) {
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ret += fprintf(fp, ", show reference callgraph");
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}
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