Warning: Permanently added '10.128.0.128' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   30.700408] kasan: CONFIG_KASAN_INLINE enabled
[   30.705142] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   30.712489] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   30.718698] Modules linked in:
[   30.721893] CPU: 0 PID: 7952 Comm: syz-executor881 Not tainted 4.14.258-syzkaller #0
[   30.729745] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   30.739079] task: ffff8880aaee06c0 task.stack: ffff88809ca50000
[   30.745122] RIP: 0010:vhost_chr_write_iter+0x873/0x1100
[   30.750462] RSP: 0018:ffff88809ca57c00 EFLAGS: 00010246
[   30.755893] RAX: dffffc0000000000 RBX: ffff888091b00140 RCX: 0000000000000000
[   30.763146] RDX: 0000000000000002 RSI: ffffffff8ba58d90 RDI: ffff888091b00200
[   30.770403] RBP: ffffed1012360039 R08: 0000000000000000 R09: 0000000000000000
[   30.777651] R10: 0000000000000002 R11: ffff8880aaee06c0 R12: 0000000000000002
[   30.784894] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff1101394af87
[   30.792144] FS:  0000555555b88300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
[   30.800342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.806199] CR2: 000000002000118e CR3: 00000000b612a000 CR4: 00000000003406f0
[   30.813446] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   30.820693] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   30.827936] Call Trace:
[   30.830631]  ? log_write_hva+0x310/0x310
[   30.834666]  ? debug_check_no_obj_freed+0x2c0/0x680
[   30.839662]  ? lock_downgrade+0x740/0x740
[   30.843782]  ? iov_iter_init+0xa6/0x1c0
[   30.847730]  __vfs_write+0x44c/0x630
[   30.851421]  ? kernel_read+0x110/0x110
[   30.855281]  ? rw_verify_area+0xe1/0x2a0
[   30.859316]  vfs_write+0x17f/0x4d0
[   30.862869]  SyS_write+0xf2/0x210
[   30.866381]  ? SyS_read+0x210/0x210
[   30.870068]  ? __do_page_fault+0x159/0xad0
[   30.874294]  ? do_syscall_64+0x4c/0x640
[   30.878245]  ? SyS_read+0x210/0x210
[   30.881842]  do_syscall_64+0x1d5/0x640
[   30.885705]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   30.890867] RIP: 0033:0x7f506a80f029
[   30.894548] RSP: 002b:00007fffa502bdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   30.902227] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f506a80f029
[   30.909473] RDX: 0000000000000048 RSI: 0000000020001100 RDI: 0000000000000003
[   30.916718] RBP: 00007f506a7d3010 R08: 0000000000000000 R09: 0000000000000000
[   30.923961] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f506a7d30a0
[   30.931297] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   30.938541] 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 
[   30.957613] RIP: vhost_chr_write_iter+0x873/0x1100 RSP: ffff88809ca57c00
[   30.964818] ---[ end trace 7843c9833982fcea ]---
[   30.969564] Kernel panic - not syncing: Fatal exception
[   30.975205] Kernel Offset: disabled
[   30.978814] Rebooting in 86400 seconds..