WARNING: CPU: NUM PID: NUM at net/wireless/ibss.c:LINE __cfg80211_ibss

WARNING: CPU: NUM PID: NUM at net/wireless/ibss.c:LINE __cfg80211_ibss_join

Status: upstream: reported C repro on 2022/08/09 05:40
Reported-by: syzbot+af9c72450de65fd26129@syzkaller.appspotmail.com
First crash: 55d, last: 55d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in __cfg80211_ibss_joined (log)
Repro: C syz .config

Sample crash report:

wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
------------[ cut here ]------------
WARNING: CPU: 0 PID: 46 at net/wireless/ibss.c:37 __cfg80211_ibss_join

Crashes (1):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-root	2022/08/05 05:31	upstream	200e340f2196	1c9013ac	.config	log	report	syz	C		WARNING: CPU: NUM PID: NUM at net/wireless/ibss.c:LINE __cfg80211_ibss_join

* ~~Struck through~~ repros no longer work on HEAD.