------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 1 PID: 6595 at net/mac80211/main.c:1703 ieee80211_free_ack_frame+0x4c/0x60 net/mac80211/main.c:1703
Modules linked in:
CPU: 1 UID: 0 PID: 6595 Comm: kworker/u8:13 Not tainted 6.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x4c/0x60 net/mac80211/main.c:1703
Code: 00 00 00 e8 36 5a 5d fe 31 c0 5b e9 29 92 c1 00 e8 29 2b 66 f6 c6 05 eb 2b d8 04 01 90 48 c7 c7 40 22 2a 8d e8 85 21 27 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:ffffc900034bf7d0 EFLAGS: 00010246
RAX: c11847c13d6e2f00 RBX: ffff888042936dc0 RCX: ffff888025cd1e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900034bf8d8 R08: ffffffff8155d312 R09: fffffbfff1cf9fd0
R10: dffffc0000000000 R11: fffffbfff1cf9fd0 R12: ffffc900034bf840
R13: dffffc0000000000 R14: ffff888032f8152c R15: ffff8880310dfcb0
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f573f84a000 CR3: 000000006c91c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 idr_for_each+0x1e4/0x2d0 lib/idr.c:208
 ieee80211_free_hw+0xd0/0x480 net/mac80211/main.c:1720
 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+0x804/0xcc0 net/core/net_namespace.c:626
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>