------------[ cut here ]------------
WARNING: CPU: 1 PID: 6027 at net/mac80211/iface.c:532 ieee80211_do_stop+0x1b35/0x2060 net/mac80211/iface.c:532
Modules linked in:
CPU: 1 PID: 6027 Comm: kworker/u4:16 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_do_stop+0x1b35/0x2060 net/mac80211/iface.c:532
Code: f7 49 81 c4 98 06 00 00 4c 89 e0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 ef 04 00 00 41 ff 0c 24 e9 f9 f5 ff ff e8 7b 22 d4 f7 <0f> 0b e9 f0 e8 ff ff e8 6f 22 d4 f7 48 c7 c7 c0 25 a7 8b 89 de e8
RSP: 0018:ffffc90004f3f3e0 EFLAGS: 00010293
RAX: ffffffff89ae2405 RBX: 0000000000000001 RCX: ffff88802d3cbc00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90004f3f5c8 R08: ffffc90004f3f287 R09: 1ffff920009e7e50
R10: dffffc0000000000 R11: fffff520009e7e51 R12: ffffc90004f3f530
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888053ad6760
FS:  0000000000000000(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f472364e86f CR3: 000000000d68e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ieee80211_stop+0x41f/0x490 net/mac80211/iface.c:817
 __dev_close_many+0x1d1/0x2b0 net/core/dev.c:1585
 dev_close_many+0x21c/0x400 net/core/dev.c:1610
 dev_close+0x154/0x210 net/core/dev.c:1636
 cfg80211_shutdown_all_interfaces+0xab/0x1c0 net/wireless/core.c:275
 ieee80211_remove_interfaces+0x192/0x700 net/mac80211/iface.c:2404
 ieee80211_unregister_hw+0x59/0x290 net/mac80211/main.c:1488
 mac80211_hwsim_del_radio+0x285/0x480 drivers/net/wireless/mac80211_hwsim.c:4693
 hwsim_exit_net+0x589/0x650 drivers/net/wireless/mac80211_hwsim.c:5484
 ops_exit_list net/core/net_namespace.c:172 [inline]
 cleanup_net+0x703/0xba0 net/core/net_namespace.c:640
 process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>