This patch fixes a possible null pointer dereference in
intel_bts_process_auxtrace_info, detected by the semantic patch
deref_null.cocci, with the following warning:
./tools/perf/util/intel-bts.c:921:32-49: ERROR: session -> itrace_synth_opts is
NULL but dereferenced.
Signed-off-by: Wen Yang <wen.yan...@zte.com.cn>
Reviewed-by: Tan Hu <tan...@zte.com.cn>
CC: Julia Lawall <julia.law...@lip6.fr>
---
tools/perf/util/intel-bts.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/intel-bts.c b/tools/perf/util/intel-bts.c
index 7b27d77..b0258f4 100644
--- a/tools/perf/util/intel-bts.c
+++ b/tools/perf/util/intel-bts.c
@@ -917,7 +917,8 @@ int intel_bts_process_auxtrace_info(union perf_event *event,
if (session->itrace_synth_opts && session->itrace_synth_opts->set) {
bts->synth_opts = *session->itrace_synth_opts;
} else {
- itrace_synth_opts__set_default(&bts->synth_opts,
+ if (session->itrace_synth_opts)
+ itrace_synth_opts__set_default(&bts->synth_opts,
session->itrace_synth_opts->default_no_sample);
if (session->itrace_synth_opts)
bts->synth_opts.thread_stack =
--
2.9.5
