[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.231' (ECDSA) to the list of known hosts.
syzkaller login: [   34.323989] IPVS: ftp: loaded support on port[0] = 21
executing program
[   34.468141] list_del corruption. prev->next should be ffff8880a95acea0, but was ffff8880a95e4e78
[   34.477719] ------------[ cut here ]------------
[   34.482498] kernel BUG at lib/list_debug.c:51!
[   34.487650] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[   34.493109] CPU: 0 PID: 8126 Comm: syz-executor322 Not tainted 4.19.211-syzkaller #0
[   34.500967] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[   34.510369] RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a
[   34.515978] Code: e8 25 43 f7 ff 0f 0b 48 89 f1 48 c7 c7 a0 e2 b3 88 4c 89 e6 e8 11 43 f7 ff 0f 0b 48 89 ee 48 c7 c7 40 e4 b3 88 e8 00 43 f7 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 80 e3 b3 88 e8 ec 42 f7 ff 0f 0b
[   34.535122] RSP: 0018:ffff888094ca79d0 EFLAGS: 00010282
[   34.540466] RAX: 0000000000000054 RBX: 0000000000000001 RCX: 0000000000000000
[   34.547715] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012994f2c
[   34.555105] RBP: ffff8880a95acea0 R08: 0000000000000054 R09: 0000000000000000
[   34.562466] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a9f199a0
[   34.569719] R13: ffff8880a9f199a0 R14: ffff888095382240 R15: 0000000000000000
[   34.576976] FS:  000055555656a300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
[   34.585187] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.591135] CR2: 0000558f4592c848 CR3: 000000009d212000 CR4: 00000000003406f0
[   34.598473] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   34.605722] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   34.612967] Call Trace:
[   34.615556]  klist_dec_and_del+0x97/0x480
[   34.619697]  ? __device_link_free_srcu+0x110/0x110
[   34.624784]  klist_put+0x7a/0x150
[   34.628223]  device_del+0x162/0xaf0
[   34.631842]  ? klist_iter_exit+0xc/0x80
[   34.635813]  ? device_link_remove+0x100/0x100
[   34.640301]  ? _raw_spin_unlock_irqrestore+0x79/0xe0
[   34.645476]  hci_conn_del_sysfs+0xdc/0x180
[   34.649715]  hci_conn_cleanup+0x24b/0x550
[   34.653872]  hci_conn_del+0x2a0/0x780
[   34.657671]  hci_conn_hash_flush+0x19c/0x260
[   34.662066]  ? vhci_close_dev+0x50/0x50
[   34.666042]  hci_dev_do_close+0x6bc/0x1020
[   34.670358]  ? hci_dev_open+0x250/0x250
[   34.674324]  ? hci_unregister_dev+0x35/0x460
[   34.678729]  ? fsnotify_first_mark+0x200/0x200
[   34.683439]  ? vhci_close_dev+0x50/0x50
[   34.687514]  hci_unregister_dev+0x14f/0x460
[   34.691828]  vhci_release+0x70/0xe0
[   34.695444]  __fput+0x2ce/0x890
[   34.698715]  task_work_run+0x148/0x1c0
[   34.702585]  do_exit+0xbf3/0x2be0
[   34.706019]  ? lock_downgrade+0x720/0x720
[   34.710144]  ? mm_update_next_owner+0x650/0x650
[   34.714793]  ? up_read+0x17/0x110
[   34.718227]  ? __do_page_fault+0x180/0xd60
[   34.722454]  do_group_exit+0x125/0x310
[   34.726401]  __x64_sys_exit_group+0x3a/0x50
[   34.730706]  do_syscall_64+0xf9/0x620
[   34.734492]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   34.739672] RIP: 0033:0x7f73abafc599
[   34.743379] Code: Bad RIP value.
[   34.746721] RSP: 002b:00007ffe35e7ab78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   34.754485] RAX: ffffffffffffffda RBX: 00007f73abb87390 RCX: 00007f73abafc599
[   34.761747] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[   34.769013] RBP: 0000000000000001 R08: ffffffffffffffb8 R09: 00007ffe35e7a640
[   34.776268] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f73abb87390
[   34.783532] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[   34.790795] Modules linked in:
[   34.794035] ---[ end trace 7de627edb0cbd932 ]---
[   34.798794] RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a
[   34.804458] Code: e8 25 43 f7 ff 0f 0b 48 89 f1 48 c7 c7 a0 e2 b3 88 4c 89 e6 e8 11 43 f7 ff 0f 0b 48 89 ee 48 c7 c7 40 e4 b3 88 e8 00 43 f7 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 80 e3 b3 88 e8 ec 42 f7 ff 0f 0b
[   34.823425] RSP: 0018:ffff888094ca79d0 EFLAGS: 00010282
[   34.828817] RAX: 0000000000000054 RBX: 0000000000000001 RCX: 0000000000000000
[   34.836132] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012994f2c
[   34.843430] RBP: ffff8880a95acea0 R08: 0000000000000054 R09: 0000000000000000
[   34.850725] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a9f199a0
[   34.858047] R13: ffff8880a9f199a0 R14: ffff888095382240 R15: 0000000000000000
[   34.865375] FS:  000055555656a300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
[   34.874189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.880171] CR2: 00007f73abafc56f CR3: 000000009d212000 CR4: 00000000003406f0
[   34.887483] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   34.894802] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   34.902188] Kernel panic - not syncing: Fatal exception
[   34.907802] Kernel Offset: disabled
[   34.911428] Rebooting in 86400 seconds..