From mboxrd@z Thu Jan 1 00:00:00 1970 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 1A7A61C862F; Tue, 30 Sep 2025 15:23:52 +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=1759245833; cv=none; b=cq4BTdlUNO6X3duulObN3SrMagKqduNv0YyCsZAuRpolTpnnoBcu2dafVdiojKUvZIXSu9YWoBlc9fkxZ3p4jC9BlAK/+d/Z7aftuZGpEWSSfmhT/0AAhkGyS+pLA+2/s9HMPlvLC4F7OSh09w7Mj+tKnF6s3O3sjRE2ZvZXg/E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759245833; c=relaxed/simple; bh=Y+K+uA26GlygSCenG32BIuqNlOxOu7X7YaymhEJdIBA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uB/1YhqRJEmUzaYb0TTo9AmNujwAB/H8oBw+PxOFLSuZ5fwwvL942v673yAdEZVNeQLwjGTFB+RKZUKYd0o6VRNjSSWQbjiObfpQWs8DSb9nImgFyTPEDEWMLm7mG2m+NxWqCkeLSNmVE+VdLShwb5ZbbbDhwoZwJAjvFrP8Psk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=wrQw90Qz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="wrQw90Qz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 516F5C4CEF0; Tue, 30 Sep 2025 15:23:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1759245832; bh=Y+K+uA26GlygSCenG32BIuqNlOxOu7X7YaymhEJdIBA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wrQw90QzXePzrGNGSYnFqD6+SDogUiwiopqJIZbAGpw5jlqeut8imdEcVN4XfE6DG D6aaqcXzQxYFzDQ6XRFpuAoJtUYFCB9xVkjtKYIHDYEeI9c3Rx8IIjNTOxnqT+Xopm hkHyPl1O7tqp86qA73lBzfesyftW8GvqvfcqC/Mw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, "Masami Hiramatsu (Google)" Subject: [PATCH 6.6 64/91] tracing: dynevent: Add a missing lockdown check on dynevent Date: Tue, 30 Sep 2025 16:48:03 +0200 Message-ID: <20250930143823.847515785@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250930143821.118938523@linuxfoundation.org> References: <20250930143821.118938523@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Masami Hiramatsu (Google) 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: 17911ff38aa5 ("tracing: Add locked_down checks to the open calls of files created for tracefs") Signed-off-by: Masami Hiramatsu (Google) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- kernel/trace/trace_dynevent.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/kernel/trace/trace_dynevent.c +++ b/kernel/trace/trace_dynevent.c @@ -239,6 +239,10 @@ static int dyn_event_open(struct inode * { int ret; + ret = security_locked_down(LOCKDOWN_TRACEFS); + if (ret) + return ret; + ret = tracing_check_open_get_tr(NULL); if (ret) return ret;