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 E595E31B138; Mon, 3 Nov 2025 14:58:19 +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=1762181900; cv=none; b=kuDZYD8vfo+0tw7EJLbarRGo44iJCfr7OJeZmdOcSucaqgc+Zsc4A5xiOrDfAaSU+kt2+CePZUddZufxuzo48Vb7fFSrdbEdMFw+f4Sxne8IQOamW7jmPRIEtgcur54evLNN16yyRs5ixkFyBmgg/A0yVnrhsQhNFbjA3ByDWtk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762181900; c=relaxed/simple; bh=c3MjjxCah9rBlJv8gEbIO0Wdkh/B50Fpv0CEVpSv9OE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Kzdt1J8qMFiGlG1y/mgmmGokDm+fkHRD6QbbnYhjuERg3V+ancEjOtNX+8qLQ1TFFj965UZbyiJlRShQjoFMIzdwZV2kLvj9+GqKttm9pi6gwtUaZDOadlKpZoFURJEoXEa+lM86mFlr3bDjoSprBWPdtnQTfBugeM96i1LlfkU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FfjNIE12; 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="FfjNIE12" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6E440C113D0; Mon, 3 Nov 2025 14:58:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762181899; bh=c3MjjxCah9rBlJv8gEbIO0Wdkh/B50Fpv0CEVpSv9OE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=FfjNIE12fBDXyCnPG4LOVn61IOGzDAi39xv0r51APjfXkGOj6cWQuTRlUj604/ozo Povw9myNuMm1ljtrRCkTqyVh4bFAPTCs5loqrX+7/37CHb+NUsq0s7uHoOpCs/m3ti UMqw0xVtyhjapiaEcXLbqp2RqzD3u0CtRHDEDIvOkmpRwmmku8bQNDtEWl8XEbjf2T uytPDnZZvyinUEWfIBgWUwOxEbJECZAr+mDAzOqt7nIz9SlJctuUzP8lcmv0ZygBRe kouePD9U+wkCEQO5Ou2rYrGTTAZ8uDp3fShajHO2qMGWXF00JVj0vAHAIwmJPM3Bg+ yEwQK9iS9JPCQ== From: Christian Brauner Date: Mon, 03 Nov 2025 15:57:35 +0100 Subject: [PATCH 09/12] coredump: use prepare credential guard Precedence: bulk X-Mailing-List: linux-trace-kernel@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-v1-9-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=873; i=brauner@kernel.org; h=from:subject:message-id; bh=c3MjjxCah9rBlJv8gEbIO0Wdkh/B50Fpv0CEVpSv9OE=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWRyHHopwsuxvjlnd5bB3CqvS4ZW7CvfJnLHFto9bkkv1 M8+UL+xo5SFQYyLQVZMkcWh3SRcbjlPxWajTA2YOaxMIEMYuDgFYCIS6owMN9/rS7u0KCxf8ePA njVZXecXJj7JeVewWaYwJ7E4WXtFJcM/O6HUn0onP1l6aYpFnFo2/3lXNdNb1hCRqWYmcfwm2wu 5AQ== 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 --- fs/coredump.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/coredump.c b/fs/coredump.c index 79c681f1d647..5424a6c4e360 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -1155,7 +1155,6 @@ static void do_coredump(struct core_name *cn, struct coredump_params *cprm, void vfs_coredump(const kernel_siginfo_t *siginfo) { - struct cred *cred __free(put_cred) = NULL; size_t *argv __free(kfree) = NULL; struct core_state core_state; struct core_name cn; @@ -1183,7 +1182,7 @@ void vfs_coredump(const kernel_siginfo_t *siginfo) if (coredump_skip(&cprm, binfmt)) return; - cred = prepare_creds(); + CLASS(prepare_creds, cred)(); if (!cred) return; /* -- 2.47.3