From: Christian Brauner <brauner@kernel.org>
To: linux-fsdevel@vger.kernel.org, Josef Bacik <josef@toxicpanda.com>,
	 Jeff Layton <jlayton@kernel.org>
Cc: "Jann Horn" <jannh@google.com>, "Mike Yuan" <me@yhndnzj.com>,
	"Zbigniew Jędrzejewski-Szmek" <zbyszek@in.waw.pl>,
	"Lennart Poettering" <mzxreary@0pointer.de>,
	"Daan De Meyer" <daan.j.demeyer@gmail.com>,
	"Aleksa Sarai" <cyphar@cyphar.com>,
	"Amir Goldstein" <amir73il@gmail.com>,
	"Tejun Heo" <tj@kernel.org>,
	"Johannes Weiner" <hannes@cmpxchg.org>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Alexander Viro" <viro@zeniv.linux.org.uk>,
	"Jan Kara" <jack@suse.cz>,
	linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
	bpf@vger.kernel.org, "Eric Dumazet" <edumazet@google.com>,
	"Jakub Kicinski" <kuba@kernel.org>,
	netdev@vger.kernel.org, "Arnd Bergmann" <arnd@arndb.de>,
	"Christian Brauner" <brauner@kernel.org>
Subject: [PATCH v3 08/70] ns: initialize ns_list_node for initial namespaces
Date: Fri, 24 Oct 2025 12:52:37 +0200	[thread overview]
Message-ID: <20251024-work-namespace-nstree-listns-v3-8-b6241981b72b@kernel.org> (raw)
In-Reply-To: <20251024-work-namespace-nstree-listns-v3-0-b6241981b72b@kernel.org>
Make sure that the list is always initialized for initial namespaces.
Fixes: 885fc8ac0a4d ("nstree: make iterator generic")
Signed-off-by: Christian Brauner <brauner@kernel.org>
---
 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
next prev parent reply	other threads:[~2025-10-24 10:53 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-24 10:52 [PATCH v3 00/70] nstree: listns() Christian Brauner
2025-10-24 10:52 ` [PATCH v3 01/70] libfs: allow to specify s_d_flags Christian Brauner
2025-10-24 10:52 ` [PATCH v3 02/70] nsfs: use inode_just_drop() Christian Brauner
2025-10-24 10:52 ` [PATCH v3 03/70] nsfs: raise DCACHE_DONTCACHE explicitly Christian Brauner
2025-10-24 10:52 ` [PATCH v3 04/70] pidfs: " Christian Brauner
2025-10-24 10:52 ` [PATCH v3 05/70] nsfs: raise SB_I_NODEV and SB_I_NOEXEC Christian Brauner
2025-10-27 13:13   ` Jeff Layton
2025-10-28 15:35     ` Christian Brauner
2025-10-24 10:52 ` [PATCH v3 06/70] cgroup: add cgroup namespace to tree after owner is set Christian Brauner
2025-10-24 10:52 ` [PATCH v3 07/70] nstree: simplify return Christian Brauner
2025-10-24 10:52 ` Christian Brauner [this message]
2025-10-24 10:52 ` [PATCH v3 09/70] ns: add __ns_ref_read() Christian Brauner
2025-10-24 10:52 ` [PATCH v3 10/70] ns: rename to exit_nsproxy_namespaces() Christian Brauner
2025-10-24 10:52 ` [PATCH v3 11/70] ns: add active reference count Christian Brauner
2025-10-27 16:36   ` Thomas Gleixner
2025-10-28 15:33     ` Christian Brauner
2025-10-28 10:30   ` Simon Horman
2025-10-28 15:32     ` Christian Brauner
2025-10-29  7:02   ` Askar Safin
2025-10-24 10:52 ` [PATCH v3 12/70] ns: use anonymous struct to group list member Christian Brauner
2025-10-24 10:52 ` [PATCH v3 13/70] nstree: introduce a unified tree Christian Brauner
2025-10-24 10:52 ` [PATCH v3 14/70] nstree: allow lookup solely based on inode Christian Brauner
2025-10-27 13:48   ` Jeff Layton
2025-10-24 10:52 ` [PATCH v3 15/70] nstree: assign fixed ids to the initial namespaces Christian Brauner
2025-10-24 10:52 ` [PATCH v3 16/70] ns: maintain list of owned namespaces Christian Brauner
2025-10-24 10:52 ` [PATCH v3 17/70] nstree: add listns() Christian Brauner
2025-10-24 14:06   ` Arnd Bergmann
2025-10-28 15:20     ` Christian Brauner
2025-10-27 14:04   ` Jeff Layton
2025-10-28 15:39     ` Christian Brauner
2025-10-28 10:36   ` Simon Horman
2025-10-28 13:33     ` Christian Brauner
2025-10-29  7:52   ` Askar Safin
2025-10-24 10:52 ` [PATCH v3 18/70] arch: hookup listns() system call Christian Brauner
2025-10-24 14:08   ` Arnd Bergmann
2025-10-24 10:52 ` [PATCH v3 19/70] nsfs: update tools header Christian Brauner
2025-10-24 10:52 ` [PATCH v3 20/70] selftests/filesystems: remove CLONE_NEWPIDNS from setup_userns() helper Christian Brauner
2025-10-24 10:52 ` [PATCH v3 21/70] selftests/namespaces: first active reference count tests Christian Brauner
2025-10-24 10:52 ` [PATCH v3 22/70] selftests/namespaces: second " Christian Brauner
2025-10-24 10:52 ` [PATCH v3 23/70] selftests/namespaces: third " Christian Brauner
2025-10-24 10:52 ` [PATCH v3 24/70] selftests/namespaces: fourth " Christian Brauner
2025-10-24 10:52 ` [PATCH v3 25/70] selftests/namespaces: fifth " Christian Brauner
2025-10-24 10:52 ` [PATCH v3 26/70] selftests/namespaces: sixth " Christian Brauner
2025-10-24 10:52 ` [PATCH v3 27/70] selftests/namespaces: seventh " Christian Brauner
2025-10-24 10:52 ` [PATCH v3 28/70] selftests/namespaces: eigth " Christian Brauner
2025-10-24 10:52 ` [PATCH v3 29/70] selftests/namespaces: ninth " Christian Brauner
2025-10-24 10:52 ` [PATCH v3 30/70] selftests/namespaces: tenth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 31/70] selftests/namespaces: eleventh " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 32/70] selftests/namespaces: twelth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 33/70] selftests/namespaces: thirteenth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 34/70] selftests/namespaces: fourteenth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 35/70] selftests/namespaces: fifteenth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 36/70] selftests/namespaces: add listns() wrapper Christian Brauner
2025-10-24 10:53 ` [PATCH v3 37/70] selftests/namespaces: first listns() test Christian Brauner
2025-10-24 10:53 ` [PATCH v3 38/70] selftests/namespaces: second " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 39/70] selftests/namespaces: third " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 40/70] selftests/namespaces: fourth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 41/70] selftests/namespaces: fifth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 42/70] selftests/namespaces: sixth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 43/70] selftests/namespaces: seventh " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 44/70] selftests/namespaces: eigth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 45/70] selftests/namespaces: ninth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 46/70] selftests/namespaces: first listns() permission test Christian Brauner
2025-10-24 10:53 ` [PATCH v3 47/70] selftests/namespaces: second " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 48/70] selftests/namespaces: third " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 49/70] selftests/namespaces: fourth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 50/70] selftests/namespaces: fifth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 51/70] selftests/namespaces: sixth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 52/70] selftests/namespaces: seventh " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 53/70] selftests/namespaces: first inactive namespace resurrection test Christian Brauner
2025-10-24 10:53 ` [PATCH v3 54/70] selftests/namespaces: second " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 55/70] selftests/namespaces: third " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 56/70] selftests/namespaces: fourth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 57/70] selftests/namespaces: fifth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 58/70] selftests/namespaces: sixth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 59/70] selftests/namespaces: seventh " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 60/70] selftests/namespaces: eigth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 61/70] selftests/namespaces: ninth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 62/70] selftests/namespaces: tenth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 63/70] selftests/namespaces: eleventh " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 64/70] selftests/namespaces: twelth " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 65/70] selftests/namespace: first threaded active reference count test Christian Brauner
2025-10-24 10:53 ` [PATCH v3 66/70] selftests/namespace: second " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 67/70] selftests/namespace: third " Christian Brauner
2025-10-24 10:53 ` [PATCH v3 68/70] selftests/namespace: commit_creds() active reference tests Christian Brauner
2025-10-24 10:53 ` [PATCH v3 69/70] selftests/namespace: add stress test Christian Brauner
2025-10-24 10:53 ` [PATCH v3 70/70] selftests/namespace: test listns() pagination Christian Brauner
2025-10-27 14:10 ` [PATCH v3 00/70] nstree: listns() Jeff Layton
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