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wifi: cfg80211: restore netns_immutable on failures

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Switching a wiphy's netns has to clear netns_immutable before moving
interfaces, but then if any of the interfaces fails to move, it gets
netns_immutable cleared forever. Then userspace can move it by itself,
breaking the assumption that they all move together.

Fix the order here and always reset netns_immutable after attempting
the move.

Assisted-by: LLM
Fixes: 463d018323 ("cfg80211: make aware of net namespaces")
Link: https://patch.msgid.link/20260904170220.7ea88157dcbc.Id868585a790be8b9ece9b39b0db464a5963faaf3@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2026-09-04 17:01:59 +02:00
parent 6f0a100df8
commit eeee52cfd1
1 changed files with 1 additions and 1 deletions
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2
net/wireless/core.c
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@ -167,9 +167,9 @@ int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
continue;
wdev->netdev->netns_immutable = false;
err = dev_change_net_namespace(wdev->netdev, net, "wlan%d");
wdev->netdev->netns_immutable = true;
if (err)
break;
wdev->netdev->netns_immutable = true;
}
if (err) {