------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 0 PID: 30749 at net/mac80211/main.c:1527 ieee80211_free_ack_frame+0x4a/0x50 net/mac80211/main.c:1527
Modules linked in:
CPU: 0 PID: 30749 Comm: kworker/u4:35 Not tainted 6.8.0-rc6-syzkaller-00124-g1c61728be22c #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+0x4a/0x50 net/mac80211/main.c:1527
Code: 00 00 00 e8 b8 bc 63 fe 31 c0 5b c3 cc cc cc cc e8 9b 8e bf f6 c6 05 a9 45 9c 04 01 90 48 c7 c7 60 15 bb 8c e8 57 99 83 f6 90 <0f> 0b 90 90 eb cb 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90005937830 EFLAGS: 00010246
RAX: 9a883a0c65c58f00 RBX: ffff88801c3aec80 RCX: ffff8880378f0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90005937938 R08: ffffffff81577ab2 R09: 1ffff110172851a2
R10: dffffc0000000000 R11: ffffed10172851a3 R12: ffffc900059378a0
R13: dffffc0000000000 R14: ffff8880324d950c R15: ffff8880313ae970
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055745fc29258 CR3: 000000002e20a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 idr_for_each+0x1e2/0x2d0 lib/idr.c:208
 ieee80211_free_hw+0xd0/0x480 net/mac80211/main.c:1544
 mac80211_hwsim_del_radio+0x329/0x4c0 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+0x6da/0xb90 net/core/net_namespace.c:618
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>