------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 0 PID: 24847 at net/mac80211/main.c:1525 ieee80211_free_ack_frame+0x52/0x60 net/mac80211/main.c:1525
Modules linked in:
CPU: 0 PID: 24847 Comm: kworker/u4:12 Not tainted 6.6.0-syzkaller-10135-g016b9332a334 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x52/0x60 net/mac80211/main.c:1525
Code: 48 89 df be 02 00 00 00 e8 1b 1f 7b fe 31 c0 5b 5d c3 e8 01 73 9c f7 48 c7 c7 40 75 0a 8c c6 05 62 55 16 05 01 e8 3e 24 62 f7 <0f> 0b eb cd 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 41 57 41 56
RSP: 0018:ffffc9001600fa00 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff888077e3a8c0 RCX: ffffffff814e3939
RDX: ffff888041e2bb80 RSI: ffffffff814e3946 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000001b20 R12: dffffc0000000000
R13: ffffffff89ec1310 R14: 0000000080000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005562abcb7950 CR3: 0000000029815000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 idr_for_each+0x141/0x260 lib/idr.c:208
 ieee80211_free_hw+0xa6/0x2f0 net/mac80211/main.c:1542
 mac80211_hwsim_del_radio drivers/net/wireless/virtual/mac80211_hwsim.c:5413 [inline]
 hwsim_exit_net+0x3fe/0x7d0 drivers/net/wireless/virtual/mac80211_hwsim.c:6287
 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:170
 cleanup_net+0x505/0xb20 net/core/net_namespace.c:614
 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>