From nobody Thu Oct 2 07:43:33 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 20D3634BA29; Fri, 19 Sep 2025 01:16:00 +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=1758244561; cv=none; b=tfTRyD0UTEO3Te9nkapxAKK6eLVa2vxgtd8BlYhhbfDCRP2aPCKfAvlHGB8yvbuQhLfbtHyaFVR5qUed/DwaBtCgliP/OYPTjWC1Ly5AyS0seBSdv+b/VHzXIABA5PgUo53nUG2ZrUPbCBRNfMua8LqPhWA0o5YbCKAKKiA+2Ts= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758244561; c=relaxed/simple; bh=adBL6r2OhKuN6ZIaoCI6yJU/ioElJyofaoeuh+1/HVA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=pe6zG2TpweVpGChLAFE7WDB2RoxCbezdKm2U7q3mz5BUf2F9CIOWjkiB5daINFmCTvB2lbD1+rUEyuEtOco4YkYYWFUCalCINRzCgzUoQT+KAeI2nIC0R8dMnt+EtjjRztUdTTVgowqzaP8Pugb1k6baALU40Bcul4MbvxzZKNg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tVF1g94K; 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="tVF1g94K" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 40EB3C4CEE7; Fri, 19 Sep 2025 01:15:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758244560; bh=adBL6r2OhKuN6ZIaoCI6yJU/ioElJyofaoeuh+1/HVA=; h=From:To:Cc:Subject:Date:From; b=tVF1g94KiNdUeIv3rQlsJvOG2RZAT/FMpnVFOReQcqjW0DHXWXjz0/JcbKbI6RZ8O wYPm3jr/3MOQOS//q9Pl/71q+4qBzkS4zpJ7JeV97OJ3qo82WwqAPsyGct0GkVWwUZ 9VpllrAj/T/y3Js6AlycI8eWxsRDJrHQDtN0VYAA8LEiy0bLoMx04z23R4nP5We2Ri kWUqXeFI8LnhaeiZUWDDRdFpQa8+1JGjD2N61uunrqK7ZNtKnCXqfEh2Xplmi9mxvQ Yy5mxiZmBZGsNhgqlDgH21q0JWNkjZur2oA/akZEtvGbqA4s0rmqxkMjqPnuPSv/2S l8x/QGVYzaCHQ== From: "Masami Hiramatsu (Google)" To: Steven Rostedt Cc: Masami Hiramatsu , Mathieu Desnoyers , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Subject: [PATCH] tracing: dynevent: Add a missing lockdown check on dynevent Date: Fri, 19 Sep 2025 10:15:56 +0900 Message-ID: <175824455687.45175.3734166065458520748.stgit@devnote2> X-Mailer: git-send-email 2.43.0 User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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. Signed-off-by: Masami Hiramatsu (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;