------------[ cut here ]------------ Have pending ack frames! WARNING: CPU: 1 PID: 7875 at net/mac80211/main.c:1691 ieee80211_free_ack_frame+0x4a/0x50 net/mac80211/main.c:1691 Modules linked in: CPU: 1 PID: 7875 Comm: kworker/u8:11 Not tainted 6.10.0-rc7-syzkaller-00025-ga19ea421490d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: netns cleanup_net RIP: 0010:ieee80211_free_ack_frame+0x4a/0x50 net/mac80211/main.c:1691 Code: 00 00 00 e8 d8 2d 61 fe 31 c0 5b c3 cc cc cc cc e8 cb 73 a7 f6 c6 05 17 1a a9 04 01 90 48 c7 c7 60 42 e1 8c e8 97 a1 69 f6 90 <0f> 0b 90 90 eb cb 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000450f7d0 EFLAGS: 00010246 RAX: 1b68e068e7618f00 RBX: ffff88802cd348c0 RCX: ffff88806a863c00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000450f8d8 R08: ffffffff81585822 R09: fffffbfff1c39994 R10: dffffc0000000000 R11: fffffbfff1c39994 R12: ffffc9000450f840 R13: dffffc0000000000 R14: ffff88806043150c R15: ffff88801d47d630 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1b4e5833b0 CR3: 000000002bdf6000 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:1708 mac80211_hwsim_del_radio+0x329/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5579 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6453 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:3248 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 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