------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 2 PID: 77 at net/mac80211/main.c:1703 ieee80211_free_ack_frame+0x5a/0x60 net/mac80211/main.c:1703
Modules linked in:
CPU: 2 UID: 0 PID: 77 Comm: kworker/u32:4 Not tainted 6.13.0-rc4-syzkaller-00078-g059dd502b263 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x5a/0x60 net/mac80211/main.c:1703
Code: 31 ff e8 e9 0c 6b fe 31 c0 5b 5d c3 cc cc cc cc e8 5b 9f 00 f7 c6 05 5d 7b ae 05 01 90 48 c7 c7 60 76 bf 8c e8 d7 d8 c0 f6 90 <0f> 0b 90 90 eb c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000fdf9b8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8880250e4000 RCX: ffffffff815a50d9
RDX: ffff888021b1a440 RSI: ffffffff815a50e6 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000003 R12: dffffc0000000000
R13: ffffffff8a997610 R14: 0000000080000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3915be CR3: 000000006155e000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 idr_for_each+0x141/0x270 lib/idr.c:208
 ieee80211_free_hw+0x9b/0x2d0 net/mac80211/main.c:1720
 mac80211_hwsim_del_radio drivers/net/wireless/virtual/mac80211_hwsim.c:5628 [inline]
 hwsim_exit_net+0x3fe/0x7d0 drivers/net/wireless/virtual/mac80211_hwsim.c:6505
 ops_exit_list+0xb0/0x180 net/core/net_namespace.c:172
 cleanup_net+0x5b7/0xbd0 net/core/net_namespace.c:648
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>