Warning: Permanently added '10.128.0.177' (ECDSA) to the list of known hosts.
executing program
[   29.160084] kasan: CONFIG_KASAN_INLINE enabled
[   29.164762] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   29.173179] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   29.179447] Modules linked in:
[   29.182617] CPU: 0 PID: 7973 Comm: syz-executor346 Not tainted 4.14.215-syzkaller #0
[   29.190468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   29.199796] task: ffff8880b337e580 task.stack: ffff8880b33c8000
[   29.205832] RIP: 0010:vhost_chr_write_iter+0x863/0x10f0
[   29.211164] RSP: 0018:ffff8880b33cfc00 EFLAGS: 00010246
[   29.216519] RAX: dffffc0000000000 RBX: ffff888092200140 RCX: 0000000000000000
[   29.223762] RDX: 0000000000000002 RSI: ffffffff8ba45030 RDI: ffff888092200200
[   29.231021] RBP: ffffed1012440039 R08: 0000000000000000 R09: 0000000000000000
[   29.238264] R10: 0000000000000002 R11: ffff8880b337e580 R12: 0000000000000002
[   29.245505] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff11016679f87
[   29.252751] FS:  0000000001208880(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
[   29.260949] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.266803] CR2: 0000000020000000 CR3: 00000000b4bcc000 CR4: 00000000001406f0
[   29.274046] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   29.281290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   29.288545] Call Trace:
[   29.291122]  ? log_write_hva+0x310/0x310
[   29.295159]  ? debug_check_no_obj_freed+0x2c0/0x674
[   29.300151]  ? lock_downgrade+0x740/0x740
[   29.304280]  ? iov_iter_init+0xa6/0x1c0
[   29.308229]  __vfs_write+0x44c/0x630
[   29.311924]  ? kernel_read+0x110/0x110
[   29.315789]  ? rw_verify_area+0xe1/0x2a0
[   29.319854]  vfs_write+0x17f/0x4d0
[   29.323396]  SyS_write+0xf2/0x210
[   29.326822]  ? SyS_read+0x210/0x210
[   29.330422]  ? __do_page_fault+0x159/0xad0
[   29.334629]  ? do_syscall_64+0x4c/0x640
[   29.338574]  ? SyS_read+0x210/0x210
[   29.342185]  do_syscall_64+0x1d5/0x640
[   29.346048]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   29.351210] RIP: 0033:0x440279
[   29.354372] RSP: 002b:00007ffee43d56b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   29.362062] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440279
[   29.369316] RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000003
[   29.376569] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   29.383810] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a80
[   29.391051] R13: 0000000000401b10 R14: 0000000000000000 R15: 0000000000000000
[   29.398307] Code: ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 cd 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 96 06 00 00 49 8b 6d 00 48 85 ed 0f 84 e4 03 
[   29.417372] RIP: vhost_chr_write_iter+0x863/0x10f0 RSP: ffff8880b33cfc00
[   29.424919] ---[ end trace 50294f5f49450b05 ]---
[   29.429842] Kernel panic - not syncing: Fatal exception
[   29.435556] Kernel Offset: disabled
[   29.439165] Rebooting in 86400 seconds..