IPVS: stopping master sync thread 20308 ...
------------[ cut here ]------------
Have pending ack frames!
WARNING: CPU: 1 PID: 41 at net/mac80211/main.c:1428 ieee80211_free_ack_frame+0x4d/0x60 net/mac80211/main.c:1428
Modules linked in:
CPU: 1 PID: 41 Comm: kworker/u4:2 Not tainted 5.19.0-rc3-syzkaller-00271-g6a0a17e6c6d1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x4d/0x60 net/mac80211/main.c:1428
Code: 48 89 ef be 01 00 00 00 e8 b0 18 90 fe 31 c0 5b 5d c3 e8 26 15 bd f8 48 c7 c7 80 61 f3 8a c6 05 8f 81 e9 04 01 e8 84 16 75 00 <0f> 0b eb cd 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 57 49
RSP: 0018:ffffc90000d2f9d0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888012984080 RSI: ffffffff815ffb18 RDI: fffff520001a5f2c
RBP: ffff888020816340 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffffffff88bc8270 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc5db42618 CR3: 0000000036311000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 idr_for_each+0x113/0x220 lib/idr.c:208
 ieee80211_free_hw+0x9b/0x2b0 net/mac80211/main.c:1444
 mac80211_hwsim_del_radio drivers/net/wireless/mac80211_hwsim.c:3967 [inline]
 hwsim_exit_net+0x55f/0xca0 drivers/net/wireless/mac80211_hwsim.c:4731
 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:162
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:594
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
 </TASK>