Commit 456c32e3 authored Sep 19, 2025 by Masami Hiramatsu (Google)

tracing: dynevent: Add a missing lockdown check on dynevent

Since dynamic_events interface on tracefs is compatible with
kprobe_events and uprobe_events, it should also check the lockdown
status and reject if it is set.

Link: https://lore.kernel.org/all/175824455687.45175.3734166065458520748.stgit@devnote2/

Fixes: 17911ff3 ("tracing: Add locked_down checks to the open calls of files created for tracefs")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: stable@vger.kernel.org

parent c539feff

kernel/trace/trace_dynevent.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -230,6 +230,10 @@ static int dyn_event_open(struct inode inode, struct file file)
		{
		int ret;

		ret = security_locked_down(LOCKDOWN_TRACEFS);
		if (ret)
		return ret;

		ret = tracing_check_open_get_tr(NULL);
		if (ret)
		return ret;