From nobody Wed Oct 1 22:30:49 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F81F29B8DB for ; Sun, 28 Sep 2025 11:07:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759057651; cv=none; b=BtGm/cd3RpQjNgV8mwySslw4oEToY2ib/XkRc9aA9loqdw6bYaI/qDp/nQSTsKPdMJMajIp7w+jjb1dKu6Ssm7rl950k2dQAs/f/rk3vfvizax0YcoTlpndBBO0RxWXIEYhhhQX/yDzYxlFKk3/h+DPa7FWW/s0+lTZBcWHgULM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759057651; c=relaxed/simple; bh=ewVGJq+QJP4csNVsGgOl12Ybz1EYVG1eW4tyS3tccLo=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=vB5ulMA2SvmadEjRIzedSMSN/Q7QQp45dVFN+jB/V58h1ILRlnGbhJ137ND3sxsLvRqUCdNCFc/OnwoHhVBugwgFm0CDeEBKn9DlE1Ln5kjEVxC+WxXKeSB/DYUyXHqMXHZWRwuiyviSCbS02TsQ+k5vR3zp8P32FMWr1cOUQVc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rSUOVmkU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rSUOVmkU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E8A9EC4CEF7; Sun, 28 Sep 2025 11:07:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1759057651; bh=ewVGJq+QJP4csNVsGgOl12Ybz1EYVG1eW4tyS3tccLo=; h=Date:From:To:Cc:Subject:References:From; b=rSUOVmkUZs8TuPyOqTtKKFD4FmSzwqSkZi09hWWYNk74gUIvqXeTcllPaO+TeYw5J lV2kFE5DJ1pjMm5C7NWzBQFru20JqkGnln7rsLoCWlZ/9+VolTwIUujBCqVLU6AAWu KykQD9vHskkGnyf1pKR4UCIZlscWiGTUfzaYFTUHVplVFU4uRZ39OnStaITy1pEV5Q R9szgNXDM5PR6CQJJ2obHtBhh7dHzqBAXk6EQZCGSd94MxOHIKwgzd6UvuCpmXQ/lC aziIjvupkI3WqbdvhsKkjtDrtgxhTjf9S124gUIdCqfNryVWWg78cmFGDWAIsE1qDE isuPfAvD+AjTw== Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1v2pH3-0000000D8OP-3rMt; Sun, 28 Sep 2025 07:09:01 -0400 Message-ID: <20250928110901.771253495@kernel.org> User-Agent: quilt/0.68 Date: Sun, 28 Sep 2025 07:08:34 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Wang Liang Subject: [for-linus][PATCH 2/3] tracing: dynevent: Add a missing lockdown check on dynevent References: <20250928110832.098564441@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: "Masami Hiramatsu (Google)" 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 5d64a18cacac..d06854bd32b3 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; =20 + ret =3D security_locked_down(LOCKDOWN_TRACEFS); + if (ret) + return ret; + ret =3D tracing_check_open_get_tr(NULL); if (ret) return ret; --=20 2.50.1