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tracing: dynevent: Add a missing lockdown check on dynevent

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commit 456c32e3c4316654f95f9d49c12cbecfb77d5660 upstream.

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: 17911ff38a ("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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Masami Hiramatsu (Google) 2025-09-19 10:15:56 +09:00 committed by Greg Kroah-Hartman
parent 1b1c3bdb8a
commit 0d41604d2d
1 changed files with 4 additions and 0 deletions
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4
kernel/trace/trace_dynevent.c
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@ -239,6 +239,10 @@ 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;