------------[ cut here ]------------ Have pending ack frames! WARNING: CPU: 0 PID: 46 at net/mac80211/main.c:1428 ieee80211_free_ack_frame+0x4d/0x60 net/mac80211/main.c:1428 Modules linked in: CPU: 0 PID: 46 Comm: kworker/u4:3 Not tainted 5.19.0-rc8-syzkaller-00118-g9e98f8c7707f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Workqueue: netns cleanup_net RIP: 0010:ieee80211_free_ack_frame+0x4d/0x60 net/mac80211/main.c:1428 Code: 48 89 ef be 01 00 00 00 e8 40 f0 8f fe 31 c0 5b 5d c3 e8 c6 0d bd f8 48 c7 c7 40 b5 f3 8a c6 05 77 91 e9 04 01 e8 92 32 75 00 <0f> 0b eb cd 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 57 49 RSP: 0018:ffffc90000b779d0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801773bb00 RSI: ffffffff8160d118 RDI: fffff5200016ef2c RBP: ffff88801bfc0280 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: dffffc0000000000 R13: ffffffff88bd5c10 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f15831a1028 CR3: 000000004b294000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: idr_for_each+0x113/0x220 lib/idr.c:208 ieee80211_free_hw+0x9b/0x2b0 net/mac80211/main.c:1444 mac80211_hwsim_del_radio drivers/net/wireless/mac80211_hwsim.c:3967 [inline] hwsim_exit_net+0x55f/0xca0 drivers/net/wireless/mac80211_hwsim.c:4731 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:162 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:594 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306