------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 1 PID: 2471 at net/mac80211/main.c:1684 ieee80211_free_ack_frame+0x4a/0x50 net/mac80211/main.c:1684
Modules linked in:
CPU: 1 PID: 2471 Comm: kworker/u8:6 Not tainted 6.9.0-rc5-syzkaller-00171-gb2ff42c6d3ab #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x4a/0x50 net/mac80211/main.c:1684
Code: 00 00 00 e8 38 98 61 fe 31 c0 5b c3 cc cc cc cc e8 3b 9a ac f6 c6 05 6e 3c aa 04 01 90 48 c7 c7 a0 2e dd 8c e8 a7 16 6f 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:ffffc90009d377d0 EFLAGS: 00010246
RAX: 89d9f69bc97bdc00 RBX: ffff88805a1d9780 RCX: ffff888029763c00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90009d378d8 R08: ffffffff81587f12 R09: fffffbfff1c39b4c
R10: dffffc0000000000 R11: fffffbfff1c39b4c R12: ffffc90009d37840
R13: dffffc0000000000 R14: ffff8880791a950c R15: ffff888054e942f0
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8c99d8aff8 CR3: 000000000e134000 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:1701
 mac80211_hwsim_del_radio+0x329/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5563
 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6437
 ops_exit_list net/core/net_namespace.c:170 [inline]
 cleanup_net+0x802/0xcc0 net/core/net_namespace.c:637
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
 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:244
 </TASK>