------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 0 PID: 4764 at net/mac80211/main.c:1701 ieee80211_free_ack_frame+0x4c/0x60 net/mac80211/main.c:1701
Modules linked in:
CPU: 0 UID: 0 PID: 4764 Comm: kworker/u8:9 Not tainted 6.12.0-rc4-syzkaller-00161-gae90f6a6170d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x4c/0x60 net/mac80211/main.c:1701
Code: 00 00 00 e8 06 6c 5d fe 31 c0 5b c3 cc cc cc cc e8 a9 48 6f f6 c6 05 01 1f e0 04 01 90 48 c7 c7 40 44 29 8d e8 b5 41 30 f6 90 <0f> 0b 90 90 eb c9 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90
RSP: 0018:ffffc9000ec6f7d0 EFLAGS: 00010246
RAX: 2e385b150c36c900 RBX: ffff888030943780 RCX: ffff888034419e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000ec6f8d8 R08: ffffffff8155d322 R09: 1ffff110170c519a
R10: dffffc0000000000 R11: ffffed10170c519b R12: ffffc9000ec6f840
R13: dffffc0000000000 R14: ffff88802f72952c R15: ffff88805ef60870
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe757db0440 CR3: 000000007e616000 CR4: 00000000003526f0
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:1718
 mac80211_hwsim_del_radio+0x32b/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5628
 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6505
 ops_exit_list net/core/net_namespace.c:173 [inline]
 cleanup_net+0x802/0xcc0 net/core/net_namespace.c:626
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 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>