This is a note to let you know that I've just added the patch titled
tracing/eprobe: Fix to release eprobe when failed to add dyn_event
to the 5.15-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:
tracing-eprobe-fix-to-release-eprobe-when-failed-to-.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b90557ee64e08eb5dc0f828d2319d241984bd4ea
Author: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
Date: Sat Nov 30 01:47:47 2024 +0900
tracing/eprobe: Fix to release eprobe when failed to add dyn_event
[ 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>
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:
