------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 1 PID: 7882 at net/mac80211/main.c:1713 ieee80211_free_ack_frame+0x4d/0x60 net/mac80211/main.c:1713
Modules linked in:
CPU: 1 UID: 0 PID: 7882 Comm: kworker/u8:8 Not tainted 6.15.0-rc3-syzkaller-00618-gff61a4a5dfc2 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x4d/0x60 net/mac80211/main.c:1713
Code: 00 00 e8 b6 db 72 fe 31 c0 5b c3 cc cc cc cc cc e8 68 e0 fa f6 c6 05 34 49 a4 04 01 90 48 c7 c7 a0 f1 8b 8c e8 54 3f bf f6 90 <0f> 0b 90 90 eb c8 cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90
RSP: 0018:ffffc90004f676b0 EFLAGS: 00010246
RAX: 0ae54498a2d26d00 RBX: ffff888022761500 RCX: ffff888023e65a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc90004f677b8 R08: ffff8880b8923e93 R09: 1ffff110171247d2
R10: dffffc0000000000 R11: ffffed10171247d3 R12: ffffc90004f67720
R13: ffff88805f487730 R14: ffff88805f132fa8 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881261c4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fe1dff8 CR3: 00000000320b4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 idr_for_each+0x1b2/0x290 lib/idr.c:208
 ieee80211_free_hw+0xc6/0x480 net/mac80211/main.c:1730
 mac80211_hwsim_del_radio+0x2de/0x460 drivers/net/wireless/virtual/mac80211_hwsim.c:5668
 hwsim_exit_net+0x584/0x640 drivers/net/wireless/virtual/mac80211_hwsim.c:6545
 ops_exit_list net/core/net_namespace.c:200 [inline]
 ops_undo_list+0x497/0x990 net/core/net_namespace.c:253
 cleanup_net+0x4c5/0x8a0 net/core/net_namespace.c:686
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>