------------[ cut here ]------------
!bss
WARNING: net/wireless/ibss.c:37 at __cfg80211_ibss_joined+0x4d5/0x580 net/wireless/ibss.c:37, CPU#0: kworker/u32:7/226
Modules linked in:
CPU: 0 UID: 0 PID: 226 Comm: kworker/u32:7 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: cfg80211 cfg80211_event_work
RIP: 0010:__cfg80211_ibss_joined+0x4d5/0x580 net/wireless/ibss.c:37
Code: ff ff e8 ce ba 1b f7 90 0f 0b 90 e9 58 fe ff ff e8 90 1b 88 f7 e9 22 fc ff ff e8 26 1b 88 f7 e9 66 fc ff ff e8 ac ba 1b f7 90 <0f> 0b 90 e9 6f fc ff ff e8 9e ba 1b f7 90 0f 0b e8 96 1b 88 f7 e9
RSP: 0018:ffffc9000327fad0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88802aea8dd0 RCX: 0000000000000040
RDX: ffff888025782480 RSI: ffffffff8aece4f4 RDI: ffffffff8c1af120
RBP: ffffc9000327fb80 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88802aea8000
R13: 1ffff9200064ff5e R14: 0000000000000000 R15: ffffc9000327fb10
FS:  0000000000000000(0000) GS:ffff8880d6347000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7a656cc6ec CR3: 000000000e598000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 cfg80211_process_wdev_events+0x407/0x600 net/wireless/util.c:1143
 cfg80211_process_rdev_events+0x9f/0x130 net/wireless/util.c:1171
 cfg80211_event_work+0x37/0x70 net/wireless/core.c:336
 process_one_work+0x9d7/0x1920 kernel/workqueue.c:3275
 process_scheduled_works kernel/workqueue.c:3358 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3439
 kthread+0x370/0x450 kernel/kthread.c:467
 ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>