------------[ cut here ]------------
!bss
WARNING: net/wireless/ibss.c:37 at __cfg80211_ibss_joined+0x3d3/0x440, CPU#1: kworker/u8:0/12
Modules linked in:
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: cfg80211 cfg80211_event_work
RIP: 0010:__cfg80211_ibss_joined+0x3d3/0x440
Code: 44 24 60 75 64 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 59 ef c7 f6 90 0f 0b 90 eb b9 e8 4e ef c7 f6 90 <0f> 0b 90 eb ae e8 43 ef c7 f6 90 0f 0b 90 e9 d8 fd ff ff e8 35 ef
RSP: 0018:ffffc90000117980 EFLAGS: 00010293
RAX: ffffffff8afd64c2 RBX: dffffc0000000000 RCX: ffff888102e88000
RDX: 0000000000000000 RSI: ffffffff8dfa2c95 RDI: ffffffff8c28aea0
RBP: ffffc90000117a38 R08: ffffffff902fd6f7 R09: 1ffffffff205fade
R10: dffffc0000000000 R11: fffffbfff205fadf R12: ffff88810cb50e50
R13: ffff8881165a3458 R14: 1ffff92000022f34 R15: 000000000000000b
FS:  0000000000000000(0000) GS:ffff8882a92af000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c0a9ea540 CR3: 000000018445e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 cfg80211_process_wdev_events+0x39f/0x5b0
 cfg80211_process_rdev_events+0xa1/0x110
 cfg80211_event_work+0x2c/0x60
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
