From 1da3f145ede481607a93472d2a1f597d6e998eb4 Mon Sep 17 00:00:00 2001 From: "Masami Hiramatsu (Google)" Date: Fri, 19 Sep 2025 10:15:56 +0900 Subject: [PATCH] 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. Cc: Mathieu Desnoyers Link: https://lore.kernel.org/175824455687.45175.3734166065458520748.stgit@devnote2 Signed-off-by: Masami Hiramatsu (Google) Signed-off-by: Steven Rostedt (Google) --- kernel/trace/trace_dynevent.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/trace/trace_dynevent.c b/kernel/trace/trace_dynevent.c index 5d64a18cacacc..d06854bd32b35 100644 --- a/kernel/trace/trace_dynevent.c +++ b/kernel/trace/trace_dynevent.c @@ -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; -- 2.39.5