IPVS: stopping master sync thread 11241 ... ------------[ cut here ]------------ WARNING: CPU: 0 PID: 15313 at net/mac80211/iface.c:530 ieee80211_do_stop+0x1ac8/0x2000 net/mac80211/iface.c:530 Modules linked in: CPU: 0 PID: 15313 Comm: kworker/u4:12 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: netns cleanup_net RIP: 0010:ieee80211_do_stop+0x1ac8/0x2000 net/mac80211/iface.c:530 Code: f7 49 81 c5 d8 06 00 00 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 e0 04 00 00 41 ff 4d 00 e9 ed f5 ff ff e8 78 7d 81 f7 <0f> 0b e9 d0 e8 ff ff e8 6c 7d 81 f7 43 0f b6 04 27 84 c0 0f 85 f5 RSP: 0018:ffffc90004fdf380 EFLAGS: 00010293 RAX: ffffffff8a060dd8 RBX: 0000000000000001 RCX: ffff888022270000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90004fdf568 R08: ffffc90004fdf227 R09: 1ffff920009fbe44 R10: dffffc0000000000 R11: fffff520009fbe45 R12: dffffc0000000000 R13: ffffc90004fdf4d0 R14: 0000000000000001 R15: ffff88805ca1e930 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffeac430010 CR3: 0000000019e8a000 CR4: 00000000003526f0 Call Trace: <TASK> ieee80211_stop+0x423/0x490 net/mac80211/iface.c:813 __dev_close_many+0x1d5/0x2b0 net/core/dev.c:1603 dev_close_many+0x220/0x410 net/core/dev.c:1628 dev_close+0x158/0x210 net/core/dev.c:1654 cfg80211_shutdown_all_interfaces+0xaf/0x1c0 net/wireless/core.c:280 ieee80211_remove_interfaces+0x114/0x690 net/mac80211/iface.c:2339 ieee80211_unregister_hw+0x5d/0x2a0 net/mac80211/main.c:1518 mac80211_hwsim_del_radio+0x289/0x480 drivers/net/wireless/virtual/mac80211_hwsim.c:5413 hwsim_exit_net+0x58d/0x650 drivers/net/wireless/virtual/mac80211_hwsim.c:6291 ops_exit_list net/core/net_namespace.c:173 [inline] cleanup_net+0x6f7/0xb00 net/core/net_namespace.c:656 process_one_work kernel/workqueue.c:2657 [inline] process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 </TASK>