Re: [PATCH] wifi: cfg80211: fix WARN_ON during CAC cancelling

From: Johannes Berg
Date: Wed Nov 13 2024 - 04:29:18 EST


>
> diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
> index a5eb92d93074e6ce1e08fcc2790b80cf04ff08f8..2a932a036225a3e0587cf5c18a4e80e91552313b 100644
> --- a/net/wireless/mlme.c
> +++ b/net/wireless/mlme.c
> @@ -1112,10 +1112,6 @@ void cfg80211_cac_event(struct net_device *netdev,
> struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
> unsigned long timeout;
>
> - if (WARN_ON(wdev->valid_links &&
> - !(wdev->valid_links & BIT(link_id))))
> - return;
> -
> trace_cfg80211_cac_event(netdev, event, link_id);
>
> if (WARN_ON(!wdev->links[link_id].cac_started &&
>

This really doesn't seem right.

Perhaps the order in teardown should be changed?

johannes