[PATCH net 2/4] ieee802154: Avoid calling WARN_ON() on -ENOMEM in cfg802154_pernet_exit()
From: Ivan Abramov
Date: Tue Mar 25 2025 - 10:32:10 EST
It's pointless to call WARN_ON() in case of an allocation failure in
device_rename(), since it only leads to useless splats caused by deliberate
fault injections, so avoid it.
Fixes: 66e5c2672cd1 ("ieee802154: add netns support")
Signed-off-by: Ivan Abramov <i.abramov@xxxxxxxxxxxxxxxxx>
---
net/ieee802154/core.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/net/ieee802154/core.c b/net/ieee802154/core.c
index f9865eb2c7cf..77760ed4e528 100644
--- a/net/ieee802154/core.c
+++ b/net/ieee802154/core.c
@@ -351,11 +351,14 @@ static struct notifier_block cfg802154_netdev_notifier = {
static void __net_exit cfg802154_pernet_exit(struct net *net)
{
struct cfg802154_registered_device *rdev;
+ int err;
rtnl_lock();
list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
- if (net_eq(wpan_phy_net(&rdev->wpan_phy), net))
- WARN_ON(cfg802154_switch_netns(rdev, &init_net));
+ if (net_eq(wpan_phy_net(&rdev->wpan_phy), net)) {
+ err = cfg802154_switch_netns(rdev, &init_net);
+ WARN_ON(err && err != -ENOMEM);
+ }
}
rtnl_unlock();
}
--
2.39.5