------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 0 PID: 79 at net/mac80211/main.c:1527 ieee80211_free_ack_frame+0x54/0x60 net/mac80211/main.c:1527
Modules linked in:
CPU: 0 PID: 79 Comm: kworker/u4:5 Not tainted 6.8.0-rc1-syzkaller-g5264ab612e28 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x54/0x60 net/mac80211/main.c:1527
Code: df be 02 00 00 00 e8 3b cb 79 fe 31 c0 5b 5d c3 e8 91 4d 8c f7 c6 05 e4 44 29 05 01 90 48 c7 c7 c0 3c 0d 8c e8 1d 41 52 f7 90 <0f> 0b 90 90 eb c9 66 0f 1f 44 00 00 f3 0f 1e fa 41 57 41 56 41 55
RSP: 0018:ffffc9000237fa00 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff888075bdf000 RCX: ffffffff814e1909
RDX: ffff888016bd9dc0 RSI: ffffffff814e1916 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: ffffffff89fbd600 R14: 0000000080000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f66b5b44a08 CR3: 000000007a9ee000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 idr_for_each+0x141/0x270 lib/idr.c:208
 ieee80211_free_hw+0xa6/0x2f0 net/mac80211/main.c:1544
 mac80211_hwsim_del_radio drivers/net/wireless/virtual/mac80211_hwsim.c:5438 [inline]
 hwsim_exit_net+0x3fe/0x7d0 drivers/net/wireless/virtual/mac80211_hwsim.c:6312
 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:170
 cleanup_net+0x505/0xb20 net/core/net_namespace.c:618
 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633
 process_scheduled_works kernel/workqueue.c:2706 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787
 kthread+0x2c6/0x3a0 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>