bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): Released all slaves ------------[ cut here ]------------ Have pending ack frames! WARNING: CPU: 1 PID: 57 at net/mac80211/main.c:1419 ieee80211_free_ack_frame+0x48/0x50 net/mac80211/main.c:1419 Modules linked in: CPU: 1 PID: 57 Comm: kworker/u4:3 Not tainted 5.15.0-syzkaller #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+0x48/0x50 net/mac80211/main.c:1419 Code: e8 3d 20 f5 f8 48 89 ef e8 35 b9 97 fe 31 c0 5b 5d c3 e8 2b 20 f5 f8 48 c7 c7 80 ee ab 8a c6 05 7c 55 d8 04 01 e8 6f ec 72 00 <0f> 0b eb d2 0f 1f 40 00 41 57 41 56 49 89 f6 41 55 41 54 49 89 d4 RSP: 0018:ffffc90001a3f9d8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801712d700 RSI: ffffffff815f39c8 RDI: fffff52000347f2d RBP: ffff88801d5d6140 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ed7ae R11: 0000000000000000 R12: dffffc0000000000 R13: ffffffff8882a3c0 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0ab1b3ef80 CR3: 00000000789a1000 CR4: 0000000000350ee0 DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: idr_for_each+0x113/0x220 lib/idr.c:208 ieee80211_free_hw+0x9b/0x2b0 net/mac80211/main.c:1435 mac80211_hwsim_del_radio drivers/net/wireless/mac80211_hwsim.c:3586 [inline] hwsim_exit_net+0x55f/0xca0 drivers/net/wireless/mac80211_hwsim.c:4346 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:168 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:593 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298 worker_thread+0x658/0x11f0 kernel/workqueue.c:2445 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295