WARNING: CPU: 1 PID: 8869 at net/wireless/ibss.c:36 __cfg80211_ibss_joined+0x33a/0x3d0 net/wireless/ibss.c:36
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 8869 Comm: kworker/u4:10 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: cfg80211 cfg80211_event_work
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x4b kernel/panic.c:547
 report_bug+0x208/0x249 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:__cfg80211_ibss_joined+0x33a/0x3d0 net/wireless/ibss.c:36
RSP: 0018:ffff88805a61fc48 EFLAGS: 00010297
RAX: ffff88809e5d8640 RBX: ffff88800b340e50 RCX: 1ffff11013cbb1ec
RDX: 0000000000000000 RSI: ffff88809e5d8f40 RDI: ffff88809e5d8ec4
RBP: ffff88800b340380 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1100b4c3f8a
R13: ffff88809c290518 R14: 0000000000000000 R15: ffff88800b340ec8
 cfg80211_process_wdev_events+0x1f5/0x580 net/wireless/util.c:961
 cfg80211_process_rdev_events+0x63/0xa0 net/wireless/util.c:984
 cfg80211_event_work+0x1a/0x20 net/wireless/core.c:305
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..