netdevsim netdevsim5 eth1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim5 eth0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 : left promiscuous mode ------------[ cut here ]------------ Have pending ack frames! WARNING: CPU: 0 PID: 30691 at net/mac80211/main.c:1511 ieee80211_free_ack_frame+0x52/0x60 net/mac80211/main.c:1511 Modules linked in: CPU: 0 PID: 30691 Comm: kworker/u4:2 Not tainted 6.6.0-rc1-syzkaller-00179-gc123e0d30bdb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Workqueue: netns cleanup_net RIP: 0010:ieee80211_free_ack_frame+0x52/0x60 net/mac80211/main.c:1511 Code: 48 89 df be 02 00 00 00 e8 8b fb 7c fe 31 c0 5b 5d c3 e8 81 7a d8 f7 48 c7 c7 40 8a c4 8b c6 05 93 ea 08 05 01 e8 fe 9b 9e f7 <0f> 0b eb cd 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 41 57 41 56 RSP: 0018:ffffc900036a7a08 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88807e117dc0 RCX: 0000000000000000 RDX: ffff88801e081dc0 RSI: ffffffff814df1b6 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 00000000000a4040 R12: dffffc0000000000 R13: ffffffff89af53c0 R14: 0000000080000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffbddf4ec8 CR3: 0000000073ccd000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: idr_for_each+0x141/0x260 lib/idr.c:208 ieee80211_free_hw+0xb2/0x2f0 net/mac80211/main.c:1529 mac80211_hwsim_del_radio drivers/net/wireless/virtual/mac80211_hwsim.c:5411 [inline] hwsim_exit_net+0x3f9/0x7d0 drivers/net/wireless/virtual/mac80211_hwsim.c:6285 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:170 cleanup_net+0x505/0xb20 net/core/net_namespace.c:614 process_one_work+0x887/0x15d0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784 kthread+0x33a/0x430 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304