From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 ED0483BB9E3; Mon, 1 Jun 2026 13:57:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780322245; cv=none; b=jlpwpNgemUTh8O+m/S/Zm0JdCT4e5IYIkagDFSIekBCzveungyB/9O+nTMDECOW0/lJaB9F7T1NBzApwE7bOZTx+2jyVh8Jswzn8/3B/KM7NxVaU70ZRwvKq/yvCBNJTOHhrcL+uxQzr3bMFFwrUvcJipdM3CZsc1013/WnVzI8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780322245; c=relaxed/simple; bh=hmspYre6B8hLxwtzedBtLGee9Mt/2dAkvKYui4zrliI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Ci+/FoXsnQsV+Dq2RdXNX666a/gPa7pVHEb0OCg6oTRG5xw+wgTXPXI6WZbIrmxomfqinHanZ7pzVPYD7pU7WMDtfm6Zjm5eUBSW80qPA4smyTPN4Bhz+wSJWg4E1g5cbM0qgyWpMbFiJzz8siNcSYjtI+oCDyr8avEi9f//qGo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gGdDBvWh; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gGdDBvWh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E9B5F1F00898; Mon, 1 Jun 2026 13:57:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780322244; bh=MCWQm59ZH3b9vqMODPMumqMATKfB/FyQLnOJnFo2a6w=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=gGdDBvWhMjdQDJZIELxe6fssLShnuNL29YqvfmnWmnPnxjiyYA5A99XjLhGRENvRH D0sjxVnpuAhjtWMk24nBEO4K4jncwFxUKdlZpw9bf7E9GoclEoLyx0d1asLeeTw7IE pKh/hFNqUbeWnBR+pxU4tKQsOneHiYg5zmw3O0EUd7c1XpUYnuuWyDk4TLAMr/vAIA cyLR0v7IrHh+MBlV57c/hR0lAXbIoVCgIq9F+ut95tIKwUzaHTDvd/fj3CKP6S0O5Y 3qTJNV1fh1u4dxWDSPZlnmPOtrjZJr6rt9iQEXj2RZR4JPXxK9mRwgYmZpPyomDmYN I7JiCzboLNpnQ== From: Christian Brauner Date: Mon, 01 Jun 2026 15:56:46 +0200 Subject: [PATCH RFC v4 13/25] ksmbd: use scoped_with_init_fs() for share path resolution 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: 8bit Message-Id: <20260601-work-kthread-nullfs-v4-13-77ee053060e0@kernel.org> References: <20260601-work-kthread-nullfs-v4-0-77ee053060e0@kernel.org> In-Reply-To: <20260601-work-kthread-nullfs-v4-0-77ee053060e0@kernel.org> To: linux-fsdevel@vger.kernel.org Cc: Linus Torvalds , linux-kernel@vger.kernel.org, Alexander Viro , Jan Kara , Jann Horn , "Christian Brauner (Amutable)" X-Mailer: b4 0.16-dev-fffa9 X-Developer-Signature: v=1; a=openpgp-sha256; l=1243; i=brauner@kernel.org; h=from:subject:message-id; bh=hmspYre6B8hLxwtzedBtLGee9Mt/2dAkvKYui4zrliI=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWTJ9i87PzHb6mD/8wnrIlb1xR6SeeITtc5o1aVLBkHp0 t4tH9gPdZSyMIhxMciKKbI4tJuEyy3nqdhslKkBM4eVCWQIAxenAExkVg4jwwltjp1uduK/OJWr vjPcfbq5plCs8yfPadeCL5bSMYolLQz/Xfw6Ct4t8hJwLXy7eoXZ3Pfc1wp27n7x8PJTybyUFVc YGQE= 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 share_config_request() 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 (Amutable) --- fs/smb/server/mgmt/share_config.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/smb/server/mgmt/share_config.c b/fs/smb/server/mgmt/share_config.c index 53f44ff4d376..4535566abef2 100644 --- a/fs/smb/server/mgmt/share_config.c +++ b/fs/smb/server/mgmt/share_config.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include @@ -189,7 +190,8 @@ static struct ksmbd_share_config *share_config_request(struct ksmbd_work *work, goto out; } - ret = kern_path(share->path, 0, &share->vfs_path); + scoped_with_init_fs() + ret = kern_path(share->path, 0, &share->vfs_path); ksmbd_revert_fsids(work); if (ret) { ksmbd_debug(SMB, "failed to access '%s'\n", -- 2.47.3