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

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.64' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   29.378021] kasan: CONFIG_KASAN_INLINE enabled
[   29.383102] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   29.390450] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   29.396653] Modules linked in:
[   29.399826] CPU: 0 PID: 7966 Comm: syz-executor110 Not tainted 4.14.290-syzkaller #0
[   29.407707] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
[   29.417034] task: ffff8880b3eae600 task.stack: ffff8880af388000
[   29.423066] RIP: 0010:vhost_chr_write_iter+0x873/0x1100
[   29.428400] RSP: 0018:ffff8880af38fc00 EFLAGS: 00010246
[   29.433749] RAX: dffffc0000000000 RBX: ffff8880922c0140 RCX: 0000000000000000
[   29.440991] RDX: 0000000000000002 RSI: ffffffff8ba5b4a0 RDI: ffff8880922c0200
[   29.448321] RBP: ffffed1012458039 R08: 0000000000000000 R09: 0000000000000000
[   29.455562] R10: 0000000000000002 R11: ffff8880b3eae600 R12: 0000000000000002
[   29.462805] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff11015e71f87
[   29.470049] FS:  000055555555f300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
[   29.478246] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.484100] CR2: 000000002000008e CR3: 000000009e241000 CR4: 00000000003406f0
[   29.491370] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   29.498624] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   29.505868] Call Trace:
[   29.508435]  ? log_write_hva+0x310/0x310
[   29.512477]  ? debug_check_no_obj_freed+0x2c0/0x680
[   29.517472]  ? lock_downgrade+0x740/0x740
[   29.521605]  ? iov_iter_init+0xa6/0x1c0
[   29.525562]  __vfs_write+0x44c/0x630
[   29.529251]  ? kernel_read+0x110/0x110
[   29.533123]  ? rw_verify_area+0xe1/0x2a0
[   29.537160]  vfs_write+0x17f/0x4d0
[   29.540675]  SyS_write+0xf2/0x210
[   29.544100]  ? SyS_read+0x210/0x210
[   29.547734]  ? __do_page_fault+0x159/0xad0
[   29.551942]  ? do_syscall_64+0x4c/0x640
[   29.555889]  ? SyS_read+0x210/0x210
[   29.559502]  do_syscall_64+0x1d5/0x640
[   29.563372]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   29.568539] RIP: 0033:0x7f6978cdf029
[   29.572225] RSP: 002b:00007ffd07e85cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   29.579913] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6978cdf029
[   29.587159] RDX: 0000000000000048 RSI: 0000000020002180 RDI: 0000000000000003
[   29.594402] RBP: 00007f6978ca3010 R08: 0000000000000000 R09: 0000000000000000
[   29.601693] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6978ca30a0
[   29.608934] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   29.616178] Code: ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 c6 06 00 00 4c 8b ab c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e9 48 c1 e9 03 <80> 3c 01 00 0f 85 8f 06 00 00 49 8b 6d 00 48 85 ed 0f 84 e4 03 
[   29.635246] RIP: vhost_chr_write_iter+0x873/0x1100 RSP: ffff8880af38fc00
[   29.644115] ---[ end trace 9bd9d1104a3ae14d ]---
[   29.648873] Kernel panic - not syncing: Fatal exception
[   29.654524] Kernel Offset: disabled
[   29.658143] Rebooting in 86400 seconds..