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 498EB3659E7; Wed, 11 Mar 2026 21:56:46 +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=1773266207; cv=none; b=itevtw9hiXF+gOz4sFMzovjnnO+SAoyPaqofg1VsVvwgcrAeJXu7FHuCp1UsXTNRiwRjSRc4cXxqTfuZAHWYKUuiSNGUvgtE/h2oMiJyCdrioG25ApjIpVRXG9L/7qPXx/lPJ+XZ+cc8ypevb1GEBkt7SpABQ9QoAe0qnqawC3U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773266207; c=relaxed/simple; bh=l6PdqSMlvF3b2b9R+GwUvIJev9lUgXCwT4zIDcHSxvE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Ak/mP7pXeT3Qi+Sh+3Yg2cGM0GZqlk8yoGqfq2Tc3Ev+pIEsXgZWEzwvLcC5IoxZcGJO/x3eOI9tc1UGd/s0MMBrPmecagypTkOnh7Mt2Gg41Ytzfs4HcjsUv3/dUYNF2VOYKf07A8QMAYIlYOLWd+lVj6Z6xIsZ4o+B/rLf+bU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dJL2IbRc; 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="dJL2IbRc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C0678C4CEF7; Wed, 11 Mar 2026 21:56:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773266206; bh=l6PdqSMlvF3b2b9R+GwUvIJev9lUgXCwT4zIDcHSxvE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=dJL2IbRcDFTppjakvK5yst/K0WaqT9HIxUXfcTIyUxaWlsTf4VRBJjrDojq7bm9el 30B+o04xDww1YDJJXiKEoYMHUWyRKMLHEtwheTfWJ5U7C6fxnMk6Uqwu8AZRg3Aidr P8plsRybg1pcsxS+sHXxvWSN5hEtBoCi+ec9uRft2hGwAoeBKJZ0FdHe54vHvm4GG2 3C8QMYhNA+Y2dYfHaWw0IU+hvXwI5GNIafERxSCLzrRUVb04n1Ltuzq5iiPAX3B2x+ KEQfXkaXhDjM4IEGjluHdLaKNmoa/ppt81A0zILMdO3WvSxXgtqnx9udWXlRC9XzHc dMnVPg4EKiXiQ== From: Christian Brauner Date: Wed, 11 Mar 2026 22:43:57 +0100 Subject: [PATCH RFC v3 14/26] ksmbd: use scoped_with_init_fs() for filesystem info path lookup Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260311-work-kthread-nullfs-v3-14-3dd2cbe92ad0@kernel.org> References: <20260311-work-kthread-nullfs-v3-0-3dd2cbe92ad0@kernel.org> In-Reply-To: <20260311-work-kthread-nullfs-v3-0-3dd2cbe92ad0@kernel.org> To: linux-fsdevel@vger.kernel.org Cc: Linus Torvalds , linux-kernel@vger.kernel.org, Alexander Viro , Jens Axboe , Jan Kara , Tejun Heo , Jann Horn , Christian Brauner X-Mailer: b4 0.15-dev-9fd7c X-Developer-Signature: v=1; a=openpgp-sha256; l=1195; i=brauner@kernel.org; h=from:subject:message-id; bh=l6PdqSMlvF3b2b9R+GwUvIJev9lUgXCwT4zIDcHSxvE=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWRufPLT0nWl5qRfkd1fWzv2nS/onCK6/Z/fWc/HAkx1c 6umdswt6ShlYRDjYpAVU2RxaDcJl1vOU7HZKFMDZg4rE8gQBi5OAZjIOxdGhk3zvtis0OD93xDO /PrPI5E7nentkwpufhB9uH4pi4+5wxqGf4ap28V3mV/dHTxRxdow6x5Xv6yucdicYw3X2v8UHrk /gQUA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Use scoped_with_init_fs() to temporarily override current->fs for the kern_path() call in smb2_get_info_filesystem() so the share path lookup happens in init's filesystem context. All ksmbd paths ← SMB command handlers ← handle_ksmbd_work() ← workqueue ← ksmbd_conn_handler_loop() ← kthread Signed-off-by: Christian Brauner --- fs/smb/server/smb2pdu.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c index 743c629fe7ec..0667b0b663cd 100644 --- a/fs/smb/server/smb2pdu.c +++ b/fs/smb/server/smb2pdu.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -5463,7 +5464,8 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, if (!share->path) return -EIO; - rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path); + scoped_with_init_fs() + rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path); if (rc) { pr_err("cannot create vfs path\n"); return -EIO; -- 2.47.3