------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 0 PID: 49 at net/mac80211/main.c:1527 ieee80211_free_ack_frame+0x46/0x50 net/mac80211/main.c:1527
Modules linked in:
CPU: 0 PID: 49 Comm: kworker/u4:3 Not tainted 6.8.0-rc2-syzkaller-g6764c317b6bb #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+0x46/0x50 net/mac80211/main.c:1527
Code: 89 df be 02 00 00 00 e8 58 26 6b fe 31 c0 5b c3 e8 9f d2 f8 f6 c6 05 d8 29 57 04 01 90 48 c7 c7 e0 5e 79 8c e8 eb 95 be f6 90 <0f> 0b 90 90 eb cf 0f 1f 40 00 f3 0f 1e fa 55 41 57 41 56 41 55 41
RSP: 0018:ffffc90000b9f830 EFLAGS: 00010246
RAX: c1648095f171b700 RBX: ffff88802eafc500 RCX: ffff888013b71dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000b9f938 R08: ffffffff8154c632 R09: 1ffff92000173e58
R10: dffffc0000000000 R11: fffff52000173e59 R12: ffffc90000b9f8a0
R13: dffffc0000000000 R14: ffff888069b9950c R15: ffff888024581630
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6f3021a270 CR3: 000000002ce8d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 idr_for_each+0x1de/0x2d0 lib/idr.c:208
 ieee80211_free_hw+0xd0/0x480 net/mac80211/main.c:1544
 mac80211_hwsim_del_radio+0x329/0x4b0 drivers/net/wireless/virtual/mac80211_hwsim.c:5438
 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6312
 ops_exit_list net/core/net_namespace.c:170 [inline]
 cleanup_net+0x6d2/0xb80 net/core/net_namespace.c:618
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 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:242
 </TASK>