Warning: Permanently added '10.128.0.127' (ECDSA) to the list of known hosts. syzkaller login: [ 55.157658][ T6834] IPVS: ftp: loaded support on port[0] = 21 executing program [ 55.236181][ T6834] INFO: trying to register non-static key. [ 55.242039][ T6834] the code is fine but needs lockdep annotation. [ 55.248351][ T6834] turning off the locking correctness validator. [ 55.254666][ T6834] CPU: 1 PID: 6834 Comm: syz-executor223 Not tainted 5.9.0-rc2-syzkaller #0 [ 55.263416][ T6834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.273461][ T6834] Call Trace: [ 55.276748][ T6834] dump_stack+0x1f0/0x31e [ 55.281071][ T6834] register_lock_class+0xf06/0x1520 [ 55.286267][ T6834] ? lock_is_held_type+0xb3/0xe0 [ 55.291183][ T6834] __lock_acquire+0xfa/0x2ab0 [ 55.295931][ T6834] ? trace_lock_release+0x137/0x1a0 [ 55.301127][ T6834] ? mark_lock+0x102/0x1b00 [ 55.305617][ T6834] lock_acquire+0x160/0x730 [ 55.310105][ T6834] ? skb_queue_purge+0x2e/0x1c0 [ 55.314962][ T6834] ? lockdep_hardirqs_on_prepare+0x445/0x6a0 [ 55.320940][ T6834] ? queue_delayed_work_on+0x149/0x1b0 [ 55.326407][ T6834] _raw_spin_lock_irqsave+0x9e/0xc0 [ 55.331600][ T6834] ? skb_queue_purge+0x2e/0x1c0 [ 55.336441][ T6834] skb_queue_purge+0x2e/0x1c0 [ 55.341116][ T6834] l2cap_conn_del+0x3de/0x650 [ 55.345772][ T6834] ? l2cap_connect_cfm+0x12b0/0x12b0 [ 55.351128][ T6834] hci_conn_hash_flush+0x127/0x200 [ 55.356566][ T6834] hci_dev_do_close+0xb7b/0x1040 [ 55.361490][ T6834] hci_unregister_dev+0x185/0x1590 [ 55.366589][ T6834] vhci_release+0x73/0xc0 [ 55.370887][ T6834] ? vhci_open+0x290/0x290 [ 55.375274][ T6834] __fput+0x34f/0x7b0 [ 55.379226][ T6834] task_work_run+0x137/0x1c0 [ 55.383805][ T6834] do_exit+0x5f3/0x1f20 [ 55.387970][ T6834] ? ksys_write+0x1b1/0x220 [ 55.392462][ T6834] ? ksys_write+0x1b1/0x220 [ 55.396941][ T6834] do_group_exit+0x161/0x2d0 [ 55.401532][ T6834] ? syscall_enter_from_user_mode+0x24/0x1a0 [ 55.407591][ T6834] __do_sys_exit_group+0x13/0x20 [ 55.413131][ T6834] __se_sys_exit_group+0x10/0x10 [ 55.418087][ T6834] __x64_sys_exit_group+0x37/0x40 [ 55.423113][ T6834] do_syscall_64+0x31/0x70 [ 55.427539][ T6834] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 55.433433][ T6834] RIP: 0033:0x445068 [ 55.437354][ T6834] Code: Bad RIP value. [ 55.441431][ T6834] RSP: 002b:00007fff466b9a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 55.449830][ T6834] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000445068 [ 55.457799][ T6834] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001 [ 55.465744][ T6834] RBP: 00000000004cce30 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 55.473708][ T6834] R10: 00000000000000ff R11: 0000000000000246 R12: 0000000000000001 [ 55.481676][ T6834] R13: 00000000006e0220 R14: 0000000000000000 R