netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 1 PID: 9747 at net/mac80211/main.c:1419 ieee80211_free_ack_frame+0x48/0x50 net/mac80211/main.c:1419
Modules linked in:
CPU: 1 PID: 9747 Comm: kworker/u4:8 Not tainted 5.15.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x48/0x50 net/mac80211/main.c:1419
Code: e8 2d 08 f5 f8 48 89 ef e8 45 fd 97 fe 31 c0 5b 5d c3 e8 1b 08 f5 f8 48 c7 c7 a0 2d ab 8a c6 05 cd 2c d8 04 01 e8 a4 b1 71 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:ffffc90004b479d8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88803b290000 RSI: ffffffff815e88a8 RDI: fffff52000968f2d
RBP: ffff888067dffb40 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815e264e R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffff8881cfc0 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed595cd740 CR3: 0000000077e33000 CR4: 00000000003526f0
Call Trace:
 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:3460 [inline]
 hwsim_exit_net+0x55f/0xca0 drivers/net/wireless/mac80211_hwsim.c:4217
 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:168
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:591
 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295