------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 0 PID: 168 at net/mac80211/main.c:1549 ieee80211_free_ack_frame+0x4a/0x50 net/mac80211/main.c:1549
Modules linked in:
CPU: 0 PID: 168 Comm: kworker/u8:5 Not tainted 6.8.0-rc3-next-20240208-syzkaller #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+0x4a/0x50 net/mac80211/main.c:1549
Code: 00 00 00 e8 08 8c 64 fe 31 c0 5b c3 cc cc cc cc e8 1b 29 ba f6 c6 05 5b 30 97 04 01 90 48 c7 c7 40 86 bb 8c e8 57 07 7e f6 90 <0f> 0b 90 90 eb cb 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90002eb77f0 EFLAGS: 00010246
RAX: f41106014a5a2b00 RBX: ffff88802be94000 RCX: ffff88801c303c00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002eb78f8 R08: ffffffff8157b862 R09: fffffbfff1bf95c4
R10: dffffc0000000000 R11: fffffbfff1bf95c4 R12: ffffc90002eb7860
R13: dffffc0000000000 R14: ffff88807e00150c R15: ffff888080c563f0
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f42318d5690 CR3: 0000000064b22000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 idr_for_each+0x1e2/0x2d0 lib/idr.c:208
 ieee80211_free_hw+0xd0/0x480 net/mac80211/main.c:1566
 mac80211_hwsim_del_radio+0x329/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5515
 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6389
 ops_exit_list net/core/net_namespace.c:170 [inline]
 cleanup_net+0x6da/0xb90 net/core/net_namespace.c:618
 process_one_work kernel/workqueue.c:3102 [inline]
 process_scheduled_works+0x9d7/0x1730 kernel/workqueue.c:3182
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3263
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242
 </TASK>