This patch fixes a possible null pointer dereference in intel_pt_process_auxtrace_info, detected by the semantic patch deref_null.cocci, with the following warning:
./tools/perf/util/intel-pt.c:2579:32-49: ERROR: session -> itrace_synth_opts is NULL but dereferenced. Signed-off-by: Wen Yang <[email protected]> Reviewed-by: Tan Hu <[email protected]> CC: Julia Lawall <[email protected]> --- tools/perf/util/intel-pt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index 149ff36..bac20e8 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -2575,7 +2575,8 @@ int intel_pt_process_auxtrace_info(union perf_event *event, if (session->itrace_synth_opts && session->itrace_synth_opts->set) { pt->synth_opts = *session->itrace_synth_opts; } else { - itrace_synth_opts__set_default(&pt->synth_opts, + if (session->itrace_synth_opts) + itrace_synth_opts__set_default(&pt->synth_opts, session->itrace_synth_opts->default_no_sample); if (use_browser != -1) { pt->synth_opts.branches = false; -- 2.9.5
