------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 0 PID: 11 at net/mac80211/main.c:1511 ieee80211_free_ack_frame+0x44/0x50 net/mac80211/main.c:1511
Modules linked in:
CPU: 0 PID: 11 Comm: kworker/u4:0 Not tainted 6.5.0-syzkaller-11329-g708283abf896 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x44/0x50 net/mac80211/main.c:1511
Code: f7 48 89 df be 02 00 00 00 e8 d8 ab 6e fe 31 c0 5b c3 e8 5f 04 52 f7 c6 05 78 bd 49 04 01 48 c7 c7 60 34 12 8c e8 6c 8a 18 f7 <0f> 0b eb d3 0f 1f 84 00 00 00 00 00 e8 3b 04 52 f7 f3 0f 1e fa e8
RSP: 0018:ffffc90000107890 EFLAGS: 00010246
RAX: 1e579929fd113c00 RBX: ffff888070c78140 RCX: ffff88801664bb80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000107998 R08: ffffffff81541672 R09: 1ffff1101730516a
R10: dffffc0000000000 R11: ffffed101730516b R12: ffffc90000107900
R13: dffffc0000000000 R14: ffff8880723f150c R15: ffff8880206a42f0
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb7e3a2100 CR3: 0000000071d6d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 idr_for_each+0x1de/0x2c0 lib/idr.c:208
 ieee80211_free_hw+0xdc/0x490 net/mac80211/main.c:1529
 mac80211_hwsim_del_radio+0x329/0x4a0 drivers/net/wireless/virtual/mac80211_hwsim.c:5411
 hwsim_exit_net+0x5bc/0x660 drivers/net/wireless/virtual/mac80211_hwsim.c:6285
 ops_exit_list net/core/net_namespace.c:170 [inline]
 cleanup_net+0x6d2/0xb80 net/core/net_namespace.c:614
 process_one_work+0x781/0x1130 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0xabf/0x1060 kernel/workqueue.c:2784
 kthread+0x2b8/0x350 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>