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 F159732E681; Tue, 21 Oct 2025 11:44:25 +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=1761047066; cv=none; b=A8s4xZMrRePACAd10SyxeVC0GSWxlkXSxN8rJPWmn9nQLgW8j7uZMj3/ZZWub7KqA5CYs/8FKw6j3e3nE8pK/vAxYaISMbwCJLKNVKpzUy3kwK4mbxZ3vjT3BpFMUnM7Am8Zm9vvOvsr5WGDVXanJ8ynjCDclrJl3JA0/tzlE+8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761047066; c=relaxed/simple; bh=GmTU8Q/fclIPwxUSGwafLrmOAHz2L+FN5rNlGUSGB9Y=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=XqMylGEFzci5Yk3gQgnxiT3Te0jjPNGgfQ3+SpGyT6dzlfJhlaHdsdul5ese/7XuraR9jeGe7JILK63VbxcJR5C8e/2taBPXnbvPSaaeNR4jHj4YBkL/xOBl6yWaTo7LBHNi83ZNOSZFlieQ9fX/VKP+I7UvqX9jrY7V/PbEUaA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hNIfXkyV; 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="hNIfXkyV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4EEC4C4CEF1; Tue, 21 Oct 2025 11:44:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761047065; bh=GmTU8Q/fclIPwxUSGwafLrmOAHz2L+FN5rNlGUSGB9Y=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=hNIfXkyVS2T600rPJfW0QEO0GGCxLcg8JUUGgqln/i2NzVuJJ78s4AGZHo8lTM/wz 4ZdqYgleuFDLbuHhq5N0aiw6ex7B+S1vmq0JSSJ0IrsF/UClq5LntEafqXerxpwWUL h0Gc4uwB1RACqVqJ//++XE7h7PqnWxF+X7aqqNyi2WUp/cQKQjvqlEWFHbhPNRGioj DTfUClzu3SQlktOBFmWO+sMw3PzXiuRYCXBvtYpNvT1eGs9lerQBYnRIvX80TpBefc G0PcZsrgDYRnY7x/f4ss8pXa2GqI3ceZUszDr+POvHLhbvtcJ1n5MuZX8a86JAFTbt Och95hBGtRcTQ== From: Christian Brauner Date: Tue, 21 Oct 2025 13:43:13 +0200 Subject: [PATCH RFC DRAFT 07/50] ns: initialize ns_list_node for initial namespaces Precedence: bulk X-Mailing-List: bpf@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: <20251021-work-namespace-nstree-listns-v1-7-ad44261a8a5b@kernel.org> References: <20251021-work-namespace-nstree-listns-v1-0-ad44261a8a5b@kernel.org> In-Reply-To: <20251021-work-namespace-nstree-listns-v1-0-ad44261a8a5b@kernel.org> To: linux-fsdevel@vger.kernel.org, Josef Bacik , Jeff Layton Cc: Jann Horn , Mike Yuan , =?utf-8?q?Zbigniew_J=C4=99drzejewski-Szmek?= , Lennart Poettering , Daan De Meyer , Aleksa Sarai , Amir Goldstein , Tejun Heo , Johannes Weiner , Thomas Gleixner , Alexander Viro , Jan Kara , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, bpf@vger.kernel.org, Eric Dumazet , Jakub Kicinski , netdev@vger.kernel.org, Arnd Bergmann , Christian Brauner X-Mailer: b4 0.15-dev-96507 X-Developer-Signature: v=1; a=openpgp-sha256; l=3505; i=brauner@kernel.org; h=from:subject:message-id; bh=GmTU8Q/fclIPwxUSGwafLrmOAHz2L+FN5rNlGUSGB9Y=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWR8L3zz9SmnZ63k6e3e56zjz5n5l/Wrn9rdvIK57FPTE +7oT/UzO0pZGMS4GGTFFFkc2k3C5ZbzVGw2ytSAmcPKBDKEgYtTACbSe5bhf6KG2tvdCjt2lBRP 8w53+/nHY1eY16QHQvzaF18fd761aSYjw7VLrvemnjzN4+TyyL/okltoovs2gdlbq0u2BGfavP2 oxAkA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Make sure that the list is always initialized for initial namespaces. Fixes: 885fc8ac0a4d ("nstree: make iterator generic") Signed-off-by: Christian Brauner --- fs/namespace.c | 1 + init/version-timestamp.c | 1 + ipc/msgutil.c | 1 + kernel/cgroup/cgroup.c | 1 + kernel/pid.c | 1 + kernel/time/namespace.c | 1 + kernel/user.c | 1 + 7 files changed, 7 insertions(+) diff --git a/fs/namespace.c b/fs/namespace.c index d82910f33dc4..8ef8ba3dd316 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -5993,6 +5993,7 @@ struct mnt_namespace init_mnt_ns = { .passive = REFCOUNT_INIT(1), .mounts = RB_ROOT, .poll = __WAIT_QUEUE_HEAD_INITIALIZER(init_mnt_ns.poll), + .ns.ns_list_node = LIST_HEAD_INIT(init_mnt_ns.ns.ns_list_node), }; static void __init init_mount_tree(void) diff --git a/init/version-timestamp.c b/init/version-timestamp.c index d071835121c2..61b2405d97f9 100644 --- a/init/version-timestamp.c +++ b/init/version-timestamp.c @@ -20,6 +20,7 @@ struct uts_namespace init_uts_ns = { }, .user_ns = &init_user_ns, .ns.inum = ns_init_inum(&init_uts_ns), + .ns.ns_list_node = LIST_HEAD_INIT(init_uts_ns.ns.ns_list_node), #ifdef CONFIG_UTS_NS .ns.ops = &utsns_operations, #endif diff --git a/ipc/msgutil.c b/ipc/msgutil.c index 7a03f6d03de3..c9469fbce27c 100644 --- a/ipc/msgutil.c +++ b/ipc/msgutil.c @@ -30,6 +30,7 @@ struct ipc_namespace init_ipc_ns = { .ns.__ns_ref = REFCOUNT_INIT(1), .user_ns = &init_user_ns, .ns.inum = ns_init_inum(&init_ipc_ns), + .ns.ns_list_node = LIST_HEAD_INIT(init_ipc_ns.ns.ns_list_node), #ifdef CONFIG_IPC_NS .ns.ops = &ipcns_operations, #endif diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 6ae5f48cf64e..a82918da8bae 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -256,6 +256,7 @@ struct cgroup_namespace init_cgroup_ns = { .ns.inum = ns_init_inum(&init_cgroup_ns), .root_cset = &init_css_set, .ns.ns_type = ns_common_type(&init_cgroup_ns), + .ns.ns_list_node = LIST_HEAD_INIT(init_cgroup_ns.ns.ns_list_node), }; static struct file_system_type cgroup2_fs_type; diff --git a/kernel/pid.c b/kernel/pid.c index 4fffec767a63..cb7574ca00f7 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -78,6 +78,7 @@ struct pid_namespace init_pid_ns = { .child_reaper = &init_task, .user_ns = &init_user_ns, .ns.inum = ns_init_inum(&init_pid_ns), + .ns.ns_list_node = LIST_HEAD_INIT(init_pid_ns.ns.ns_list_node), #ifdef CONFIG_PID_NS .ns.ops = &pidns_operations, #endif diff --git a/kernel/time/namespace.c b/kernel/time/namespace.c index 5b6997f4dc3d..ee05cad288da 100644 --- a/kernel/time/namespace.c +++ b/kernel/time/namespace.c @@ -484,6 +484,7 @@ struct time_namespace init_time_ns = { .ns.inum = ns_init_inum(&init_time_ns), .ns.ops = &timens_operations, .frozen_offsets = true, + .ns.ns_list_node = LIST_HEAD_INIT(init_time_ns.ns.ns_list_node), }; void __init time_ns_init(void) diff --git a/kernel/user.c b/kernel/user.c index 0163665914c9..b9cf3b056a71 100644 --- a/kernel/user.c +++ b/kernel/user.c @@ -70,6 +70,7 @@ struct user_namespace init_user_ns = { .owner = GLOBAL_ROOT_UID, .group = GLOBAL_ROOT_GID, .ns.inum = ns_init_inum(&init_user_ns), + .ns.ns_list_node = LIST_HEAD_INIT(init_user_ns.ns.ns_list_node), #ifdef CONFIG_USER_NS .ns.ops = &userns_operations, #endif -- 2.47.3