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| author | Dmitry Antipov <dmantipov@yandex.ru> | 2025-06-06 14:22:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-19 15:41:06 +0200 |
| commit | 0fc9a295cd8e59c3636e97395e7c74a9c89fee42 (patch) | |
| tree | 8cc9e72dcedad8b8ed0cee0c53de98827a9a3d00 /tools/perf/scripts/python/stackcollapse.py | |
| parent | e018053632bad8ee0752242c7d2cffb0bbf45404 (diff) | |
ring-buffer: Fix buffer locking in ring_buffer_subbuf_order_set()
commit 40ee2afafc1d9fe3aa44a6fbe440d78a5c96a72e upstream.
Enlarge the critical section in ring_buffer_subbuf_order_set() to
ensure that error handling takes place with per-buffer mutex held,
thus preventing list corruption and other concurrency-related issues.
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
Link: https://lore.kernel.org/20250606112242.1510605-1-dmantipov@yandex.ru
Reported-by: syzbot+05d673e83ec640f0ced9@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=05d673e83ec640f0ced9
Fixes: f9b94daa542a8 ("ring-buffer: Set new size of the ring buffer sub page")
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions