From: Yang Jihong yangjihong1@huawei.com
[ Upstream commit aff10a165201f6f60cff225083ce301ad3f5d8f1 ]
perf_data__switch() may not assign a legal value to 'new_filename'. In this case, 'new_filename' uses the on-stack value, which may cause a incorrect free and unexpected result.
Fixes: 03724b2e9c45 ("perf record: Allow to limit number of reported perf.data files") Signed-off-by: Yang Jihong yangjihong1@huawei.com Acked-by: Namhyung Kim namhyung@kernel.org Link: https://lore.kernel.org/r/20240119040304.3708522-2-yangjihong1@huawei.com Signed-off-by: Namhyung Kim namhyung@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/builtin-record.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 34bb31f08bb52..cd1725643ef77 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1786,8 +1786,8 @@ static int record__switch_output(struct record *rec, bool at_exit) { struct perf_data *data = &rec->data; + char *new_filename = NULL; int fd, err; - char *new_filename;
/* Same Size: "2015122520103046"*/ char timestamp[] = "InvalidTimestamp";