This is a note to let you know that I've just added the patch titled
perf record: Fix possible incorrect free in record__switch_output()
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-record-fix-possible-incorrect-free-in-record__s.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b3e6b568b1c4fed82d87cf0051306a3f99f84138
Author: Yang Jihong <yangjihong1@xxxxxxxxxx>
Date: Fri Jan 19 04:03:02 2024 +0000
perf record: Fix possible incorrect free in record__switch_output()
[ 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@xxxxxxxxxx>
Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240119040304.3708522-2-yangjihong1@xxxxxxxxxx
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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";
