5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> [ Upstream commit 494b332064c0ce2f7392fa92632bc50191c1b517 ] Fix eprobe event to unregister event call and release eprobe when it fails to add dynamic event correctly. Link: https://lore.kernel.org/all/173289886698.73724.1959899350183686006.stgit@devnote2/ Fixes: 7491e2c44278 ("tracing: Add a probe that attaches to trace events") Signed-off-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- kernel/trace/trace_eprobe.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/trace/trace_eprobe.c b/kernel/trace/trace_eprobe.c index 085f056e66f19..6ba95e32df388 100644 --- a/kernel/trace/trace_eprobe.c +++ b/kernel/trace/trace_eprobe.c @@ -979,6 +979,11 @@ static int __trace_eprobe_create(int argc, const char *argv[]) goto error; } ret = dyn_event_add(&ep->devent, &ep->tp.event->call); + if (ret < 0) { + trace_probe_unregister_event_call(&ep->tp); + mutex_unlock(&event_mutex); + goto error; + } mutex_unlock(&event_mutex); return ret; parse_error: -- 2.43.0
