6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yicong Yang yangyicong@hisilicon.com
[ Upstream commit 813900d19b923fc1b241c1ce292472f68066092b ]
When dump the raw trace by `perf report -D` ASan reports a memory leakage in perf_event__fprintf_event_update().
It shows that we allocated a temporary cpumap for dumping the CPUs but doesn't release it and it's not used elsewhere. Fix this by free the cpumap after the dumping.
Fixes: c853f9394b7bc189 ("perf tools: Add perf_event__fprintf_event_update function") Reviewed-by: Ian Rogers irogers@google.com Signed-off-by: Yicong Yang yangyicong@hisilicon.com Acked-by: Namhyung Kim namhyung@kernel.org 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: Jonathan Cameron jonathan.cameron@huawei.com Cc: Junhao He hejunhao3@huawei.com Cc: Mark Rutland mark.rutland@arm.com Cc: Peter Zijlstra peterz@infradead.org Cc: linuxarm@huawei.com Link: https://lore.kernel.org/r/20231207081635.8427-2-yangyicong@huawei.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/util/header.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 41032243774e..f6035c219b41 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -4363,9 +4363,10 @@ size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp) ret += fprintf(fp, "... ");
map = cpu_map__new_data(&ev->cpus.cpus); - if (map) + if (map) { ret += cpu_map__fprintf(map, fp); - else + perf_cpu_map__put(map); + } else ret += fprintf(fp, "failed to get cpus\n"); break; default: