diff mbox series

[v3,08/18] perf mem-events: Avoid uninitialized read

Message ID 20231009183920.200859-10-irogers@google.com (mailing list archive)
State Not Applicable
Delegated to: BPF
Headers show
Series clang-tools support in tools | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

Ian Rogers Oct. 9, 2023, 6:39 p.m. UTC 
pmu should be initialized to NULL before perf_pmus__scan loop. Fix and
shrink the scope of pmu at the same time. Issue detected by clang-tidy.

Fixes: 5752c20f3787 ("perf mem: Scan all PMUs instead of just core ones")
Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/mem-events.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index 39ffe8ceb380..954b235e12e5 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -185,7 +185,6 @@  int perf_mem_events__record_args(const char **rec_argv, int *argv_nr,
 {
 	int i = *argv_nr, k = 0;
 	struct perf_mem_event *e;
-	struct perf_pmu *pmu;
 
 	for (int j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
 		e = perf_mem_events__ptr(j);
@@ -202,6 +201,8 @@  int perf_mem_events__record_args(const char **rec_argv, int *argv_nr,
 			rec_argv[i++] = "-e";
 			rec_argv[i++] = perf_mem_events__name(j, NULL);
 		} else {
+			struct perf_pmu *pmu = NULL;
+
 			if (!e->supported) {
 				perf_mem_events__print_unsupport_hybrid(e, j);
 				return -1;