[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.
[  OK  ] Started Update UTMP about System Runlevel Changes.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.242' (ECDSA) to the list of known hosts.
syzkaller login: [   35.985806] IPVS: ftp: loaded support on port[0] = 21
executing program
[   36.056299] list_del corruption. prev->next should be ffff8880b5318320, but was ffff8880b36511f8
[   36.065882] ------------[ cut here ]------------
[   36.070640] kernel BUG at lib/list_debug.c:51!
[   36.075576] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[   36.080941] CPU: 1 PID: 8114 Comm: syz-executor374 Not tainted 4.19.160-syzkaller #0
[   36.088796] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.098136] RIP: 0010:__list_del_entry_valid.cold+0xf/0x55
[   36.103735] Code: e8 3a a8 cf fd 0f 0b 48 89 f1 48 c7 c7 e0 ba b3 88 4c 89 e6 e8 26 a8 cf fd 0f 0b 48 89 ee 48 c7 c7 80 bc b3 88 e8 15 a8 cf fd <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 c0 bb b3 88 e8 01 a8 cf fd 0f 0b
[   36.122623] RSP: 0018:ffff8880b139f9a8 EFLAGS: 00010286
[   36.127964] RAX: 0000000000000054 RBX: 0000000000000001 RCX: 0000000000000000
[   36.135297] RDX: 0000000000000000 RSI: ffffffff814fdb91 RDI: ffffed1016273f27
[   36.142544] RBP: ffff8880b5318320 R08: 0000000000000054 R09: 0000000000000000
[   36.149803] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b59c7720
[   36.157135] R13: ffff8880b59c7720 R14: ffff888094d7a840 R15: 0000000000000000
[   36.164383] FS:  0000000000d43880(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
[   36.172582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.178451] CR2: 0000000020000200 CR3: 0000000009e6d000 CR4: 00000000001406e0
[   36.185699] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   36.192944] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   36.200187] Call Trace:
[   36.202766]  klist_dec_and_del+0x97/0x480
[   36.206893]  ? __device_link_free_srcu+0x110/0x110
[   36.211799]  klist_put+0x7a/0x150
[   36.215227]  device_del+0x162/0xaf0
[   36.218829]  ? klist_iter_exit+0xc/0x80
[   36.222779]  ? device_link_remove+0x100/0x100
[   36.227254]  ? _raw_spin_unlock_irqrestore+0x79/0xe0
[   36.232335]  hci_conn_del_sysfs+0xdc/0x180
[   36.236558]  hci_conn_cleanup+0x24b/0x550
[   36.240683]  hci_conn_del+0x2a0/0x780
[   36.244460]  hci_conn_hash_flush+0x19c/0x260
[   36.248848]  hci_dev_do_close+0x659/0xf10
[   36.252972]  ? hci_dev_open+0x250/0x250
[   36.256921]  ? hci_unregister_dev+0x71/0x910
[   36.261306]  hci_unregister_dev+0x18b/0x910
[   36.265605]  ? vhci_close_dev+0x50/0x50
[   36.269556]  vhci_release+0x70/0xe0
[   36.273162]  __fput+0x2ce/0x890
[   36.276424]  task_work_run+0x148/0x1c0
[   36.280299]  do_exit+0xbed/0x2be0
[   36.283732]  ? mm_update_next_owner+0x650/0x650
[   36.288390]  ? vfs_write+0x393/0x540
[   36.292092]  ? ksys_write+0x1c8/0x2a0
[   36.295870]  do_group_exit+0x125/0x310
[   36.299735]  __x64_sys_exit_group+0x3a/0x50
[   36.304033]  do_syscall_64+0xf9/0x620
[   36.307814]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   36.312980] RIP: 0033:0x445098
[   36.316156] Code: Bad RIP value.
[   36.319494] RSP: 002b:00007ffdd5782038 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   36.327178] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000445098
[   36.334424] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
[   36.341681] RBP: 00000000004ccdf0 R08: 00000000000000e7 R09: ffffffffffffffd0
[   36.348926] R10: 0000000000000015 R11: 0000000000000246 R12: 0000000000000001
[   36.356171] R13: 00000000006e0200 R14: 0000000000000000 R15: 0000000000000000
[   36.363419] Modules linked in:
[   36.366669] ---[ end trace 64d9e1a1f7a9c46f ]---
[   36.371463] RIP: 0010:__list_del_entry_valid.cold+0xf/0x55
[   36.377097] Code: e8 3a a8 cf fd 0f 0b 48 89 f1 48 c7 c7 e0 ba b3 88 4c 89 e6 e8 26 a8 cf fd 0f 0b 48 89 ee 48 c7 c7 80 bc b3 88 e8 15 a8 cf fd <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 c0 bb b3 88 e8 01 a8 cf fd 0f 0b
[   36.396024] RSP: 0018:ffff8880b139f9a8 EFLAGS: 00010286
[   36.401400] RAX: 0000000000000054 RBX: 0000000000000001 RCX: 0000000000000000
[   36.408706] RDX: 0000000000000000 RSI: ffffffff814fdb91 RDI: ffffed1016273f27
[   36.415964] RBP: ffff8880b5318320 R08: 0000000000000054 R09: 0000000000000000
[   36.423242] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b59c7720
[   36.430527] R13: ffff8880b59c7720 R14: ffff888094d7a840 R15: 0000000000000000
[   36.437813] FS:  0000000000d43880(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
[   36.446028] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.451918] CR2: 000000000044506e CR3: 0000000009e6d000 CR4: 00000000001406e0
[   36.459205] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   36.466460] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   36.473739] Kernel panic - not syncing: Fatal exception
[   36.479797] Kernel Offset: disabled
[   36.483409] Rebooting in 86400 seconds..