------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 0 PID: 2892 at net/mac80211/main.c:1511 ieee80211_free_ack_frame+0x44/0x50 net/mac80211/main.c:1511
Modules linked in:
CPU: 0 PID: 2892 Comm: kworker/u4:12 Not tainted 6.6.0-rc7-syzkaller-00016-g84186fcb834e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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 f8 25 6d fe 31 c0 5b c3 e8 7f 36 4f f7 c6 05 91 c3 45 04 01 48 c7 c7 00 e2 11 8c e8 7c 59 15 f7 <0f> 0b eb d3 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 55 41 57 41 56 41
RSP: 0018:ffffc9000a277830 EFLAGS: 00010246
RAX: ece8e0520cd1b300 RBX: ffff88806d4e6000 RCX: ffff8880270d1dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000a277938 R08: ffffffff81544302 R09: 1ffff9200144ee58
R10: dffffc0000000000 R11: fffff5200144ee59 R12: ffffc9000a2778a0
R13: dffffc0000000000 R14: ffff888025f6950c R15: ffff88801f8482f0
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055edd2d49131 CR3: 000000006afe8000 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 kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
 worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
 kthread+0x2d3/0x370 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>