4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Li RongQing <lirongqing@xxxxxxxxx>
commit b272a0ad730103e84fb735fd0a8cc050cdf7f77c upstream.
ops has been iterated to first element when call pre_exit, and
it needs to restore from save_ops, not save ops to save_ops
Fixes: d7d99872c144 ("netns: add pre_exit method to struct pernet_operations")
Signed-off-by: Li RongQing <lirongqing@xxxxxxxxx>
Reviewed-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/core/net_namespace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -357,7 +357,7 @@ out_undo:
synchronize_rcu();
- saved_ops = ops;
+ ops = saved_ops;
list_for_each_entry_continue_reverse(ops, &pernet_list, list)
ops_exit_list(ops, &net_exit_list);
