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 43763334698; Mon, 3 Nov 2025 14:58:27 +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=1762181907; cv=none; b=N8wyWqMA+24VX1Oqiea6yGKUjSmWqUg6z0LyjMEkEgUzPcAXd8PIIA4aloiPKG6ZRKln8NFGeWxpmpXnlrEg4M1eS5kNO7HSHwWkmza4TOvKZkTXdr6bHU9rn+t1KjJhjWWojWbd9h4WO07nJRGmUWQv9d4H8l2cmAdHY5S2ZaU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762181907; c=relaxed/simple; bh=bY8HkFfKRTUKYlL9vmR8hZHpb2HcHBiGKuybPYfCqeY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=V10jaHBRw5s5tzMwdKmkHqj9EMT7ippRJ4CPqvHYQHYqx3OvBkDvwyYTSvlP8tviSUjfbee4BEPlxqtSPW4mvHiWeszv2gkKCM2NDctVVkluv0Q1xCMeZcb/IEH2sI1mEL5XtKDAsJNjHpDvwUYtnaWhCwr/xbpPegHop4XsfQE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kZuEia7i; 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="kZuEia7i" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B547C4CEE7; Mon, 3 Nov 2025 14:58:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762181906; bh=bY8HkFfKRTUKYlL9vmR8hZHpb2HcHBiGKuybPYfCqeY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=kZuEia7iRAL2Bjn5nZLeUNYnK9vLIQ0tpub7eCFDFep21XV+b602XA/WZiuC1WTNH jNV6GcU+Xy2gjGxgdZn/sViEQr2VjI5o/280FLspkYT2NJpPz4j9DAYKxSxfnrkOEk kzQYCQg+drGBoAcWtQaZJ4xS109LWXgYTFngrR1O8dZ2DMftX4eGvta2sNcjfweor9 u6SXJaSC3Q7DXfHfCLKQ1QQzzuW0YPYZ19ecGVUUKkICfIWv8vO7w1tNU51OkO2d03 DUOXN+nKdZuhU8SOYw6qugDtmV35XWT0Vu/9q2T7mx/6Avcr4uAB2fmku4lmzXNGVE jXft2fPTrYyjA== From: Christian Brauner Date: Mon, 03 Nov 2025 15:57:37 +0100 Subject: [PATCH 11/12] trace: use prepare credential guard Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251103-work-creds-guards-prepare_creds-v1-11-b447b82f2c9b@kernel.org> References: <20251103-work-creds-guards-prepare_creds-v1-0-b447b82f2c9b@kernel.org> In-Reply-To: <20251103-work-creds-guards-prepare_creds-v1-0-b447b82f2c9b@kernel.org> To: Linus Torvalds Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-aio@kvack.org, linux-unionfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, cgroups@vger.kernel.org, netdev@vger.kernel.org, linux-crypto@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Christian Brauner X-Mailer: b4 0.15-dev-96507 X-Developer-Signature: v=1; a=openpgp-sha256; l=929; i=brauner@kernel.org; h=from:subject:message-id; bh=bY8HkFfKRTUKYlL9vmR8hZHpb2HcHBiGKuybPYfCqeY=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWRyHHrpcNDaq2a+zY//ocYTf/xYLLX2nMNk8ZLGM18CH +6Wd5r0qqOUhUGMi0FWTJHFod0kXG45T8Vmo0wNmDmsTCBDGLg4BWAi14UZ/ikFNje8yOwNi1i/ /6DXbsUJs+ZtCVQS5Dc/P+Pt1olrLJ8zMlx4EcRg3LH5bP7d2JBzWf9e3RU4HtVuqP1zQVIjv+i tGHYA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Use the prepare credential guard for allocating a new set of credentials. Signed-off-by: Christian Brauner --- kernel/trace/trace_events_user.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c index c428dafe7496..3461b1d29276 100644 --- a/kernel/trace/trace_events_user.c +++ b/kernel/trace/trace_events_user.c @@ -1453,8 +1453,7 @@ static int user_event_set_call_visible(struct user_event *user, bool visible) const struct cred *old_cred; struct cred *cred; - cred = prepare_creds(); - + CLASS(prepare_creds, cred)(); if (!cred) return -ENOMEM; @@ -1477,7 +1476,6 @@ static int user_event_set_call_visible(struct user_event *user, bool visible) ret = trace_remove_event_call(&user->call); revert_creds(old_cred); - put_cred(cred); return ret; } -- 2.47.3