[PATCH net, 1/2] net: core: Fix missing init of llist_node in setup_net()

From: Haiyang Zhang
Date: Tue Jul 22 2025 - 19:51:47 EST


From: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>

Add init_llist_node for lock-less list nodes in struct net in
setup_net(), so we can test if a node is on a list or not.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: d6b3358a2813 ("llist: add interface to check if a node is on a list.")
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
---
net/core/net_namespace.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index ae54f26709ca..2a821849558f 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -434,6 +434,9 @@ static __net_init int setup_net(struct net *net)
LIST_HEAD(net_exit_list);
int error = 0;

+ init_llist_node(&net->defer_free_list);
+ init_llist_node(&net->cleanup_list);
+
preempt_disable();
net->net_cookie = gen_cookie_next(&net_cookie);
preempt_enable();
--
2.34.1