IPVS: stopping master sync thread 20267 ...
------------[ cut here ]------------
WARNING: net/mac80211/iface.c:527 at ieee80211_do_stop+0x19e6/0x1f70 net/mac80211/iface.c:527, CPU#1: kworker/u8:4/61
Modules linked in:
CPU: 1 UID: 0 PID: 61 Comm: kworker/u8:4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_do_stop+0x19e6/0x1f70 net/mac80211/iface.c:527
Code: 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 2b 05 00 00 41 ff 0c 24 e9 49 f5 ff ff e8 95 fb f1 f6 e9 3f f5 ff ff e8 8b fb f1 f6 90 <0f> 0b 90 e9 f1 e9 ff ff e8 7d fb f1 f6 48 8d 3d 86 e9 c3 04 43 0f
RSP: 0018:ffffc9000212f0c0 EFLAGS: 00010293
RAX: ffffffff8acefc35 RBX: 0000000000000001 RCX: ffff8880222e0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000212f2d0 R08: ffffffff8ac87fb2 R09: ffffffff8df41aa0
R10: dffffc0000000000 R11: fffffbfff1f0454f R12: ffffc9000212f230
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff88802a712a60
FS:  0000000000000000(0000) GS:ffff888125f1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000418000 CR3: 00000000771e6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ieee80211_stop+0x1b1/0x240 net/mac80211/iface.c:828
 __dev_close_many+0x344/0x6b0 net/core/dev.c:1769
 netif_close_many+0x225/0x410 net/core/dev.c:1794
 netif_close+0x158/0x210 net/core/dev.c:1811
 dev_close+0x10a/0x220 net/core/dev_api.c:220
 cfg80211_shutdown_all_interfaces+0xc4/0x200 net/wireless/core.c:280
 ieee80211_remove_interfaces+0xf9/0x6c0 net/mac80211/iface.c:2401
 ieee80211_unregister_hw+0x5d/0x2c0 net/mac80211/main.c:1680
 mac80211_hwsim_del_radio+0x275/0x460 drivers/net/wireless/virtual/mac80211_hwsim.c:5916
 hwsim_exit_net+0xed3/0xf80 drivers/net/wireless/virtual/mac80211_hwsim.c:6807
 ops_exit_list net/core/net_namespace.c:199 [inline]
 ops_undo_list+0x49a/0x990 net/core/net_namespace.c:252
 cleanup_net+0x4d8/0x7a0 net/core/net_namespace.c:696
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>