netdevsim netdevsim3 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 3 PID: 3726 at net/mac80211/main.c:1419 ieee80211_free_ack_frame+0x48/0x50 net/mac80211/main.c:1419
Modules linked in:
CPU: 3 PID: 3726 Comm: kworker/u16:4 Not tainted 5.15.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x48/0x50 net/mac80211/main.c:1419
Code: e8 ed ea f4 f8 48 89 ef e8 75 ac 97 fe 31 c0 5b 5d c3 e8 db ea f4 f8 48 c7 c7 c0 4d ab 8a c6 05 f8 91 d8 04 01 e8 99 e7 72 00 <0f> 0b eb d2 0f 1f 40 00 41 57 41 56 49 89 f6 41 55 41 54 49 89 d4
RSP: 0018:ffffc900044079d8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888074866280 RSI: ffffffff815e6ec8 RDI: fffff52000880f2d
RBP: ffff88801b4482c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815e0cae R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffff888212e0 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d63abfe000 CR3: 000000001b431000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 idr_for_each+0x113/0x220 lib/idr.c:208
 ieee80211_free_hw+0x9b/0x2b0 net/mac80211/main.c:1435
 mac80211_hwsim_del_radio drivers/net/wireless/mac80211_hwsim.c:3586 [inline]
 hwsim_exit_net+0x55f/0xca0 drivers/net/wireless/mac80211_hwsim.c:4346
 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:168
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:593
 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>