------------[ cut here ]------------ Have pending ack frames! WARNING: CPU: 1 PID: 2401 at net/mac80211/main.c:1701 ieee80211_free_ack_frame+0x4c/0x60 net/mac80211/main.c:1701 Modules linked in: CPU: 1 PID: 2401 Comm: kworker/u8:7 Not tainted 6.10.0-syzkaller-11185-g2c9b3512402e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: netns cleanup_net RIP: 0010:ieee80211_free_ack_frame+0x4c/0x60 net/mac80211/main.c:1701 Code: 00 00 00 e8 96 a2 5e fe 31 c0 5b c3 cc cc cc cc e8 e9 27 a4 f6 c6 05 ce d1 a9 04 01 90 48 c7 c7 00 27 e2 8c e8 35 37 66 f6 90 <0f> 0b 90 90 eb c9 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 RSP: 0018:ffffc900090d77d0 EFLAGS: 00010246 RAX: f840dbc58f046300 RBX: ffff8880473713c0 RCX: ffff888029c45a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900090d78d8 R08: ffffffff815554b2 R09: 1ffff110172a519a R10: dffffc0000000000 R11: ffffed10172a519b R12: ffffc900090d7840 R13: dffffc0000000000 R14: ffff88802dde152c R15: ffff88806735b1b0 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000500 CR3: 000000002a58e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: idr_for_each+0x1e2/0x2d0 lib/idr.c:208 ieee80211_free_hw+0xd0/0x480 net/mac80211/main.c:1718 mac80211_hwsim_del_radio+0x32b/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5628 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6505 ops_exit_list net/core/net_namespace.c:173 [inline] cleanup_net+0x802/0xcc0 net/core/net_namespace.c:640 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244