netdevsim netdevsim2 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 bridge0: port 4(erspan0) entered disabled state device erspan0 left promiscuous mode bridge0: port 4(erspan0) entered disabled state ------------[ cut here ]------------ Have pending ack frames! WARNING: CPU: 1 PID: 21551 at net/mac80211/main.c:1428 ieee80211_free_ack_frame+0x4d/0x60 net/mac80211/main.c:1428 Modules linked in: CPU: 0 PID: 21551 Comm: kworker/u4:6 Not tainted 5.19.0-rc3-syzkaller-00120-g399bd66e219e #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+0x4d/0x60 net/mac80211/main.c:1428 Code: 48 89 ef be 01 00 00 00 e8 20 06 90 fe 31 c0 5b 5d c3 e8 26 92 bd f8 48 c7 c7 a0 8e f3 8a c6 05 d8 ce e9 04 01 e8 72 1b 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:ffffc9000384f9d0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88806f151d80 RSI: ffffffff8160dd68 RDI: fffff52000709f2c RBP: ffff8880174fb000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: dffffc0000000000 R13: ffffffff88bce330 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fde511f79ee CR3: 00000000732b9000 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:302