Warning: Permanently added 'ci-upstream-kasan-gce-7,10.128.0.16' (ECDSA) to the list of known hosts.
serialport: Connected to syzkaller.us-central1-c.ci-upstream-kasan-gce-7 port 1 (session ID: 9f671b8cdadbe40f324c12dca4c5c808cd3e248369c6f237ba1be89f25530ece, active connections: 1).
INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

2017/07/30 17:58:38 parsed 1 programs
2017/07/30 17:58:38 executed programs: 0
syzkaller login: [   50.683090] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu
2017/07/30 17:58:43 executed programs: 279
2017/07/30 17:58:48 executed programs: 525
[   64.049461] ------------[ cut here ]------------
[   64.056447] WARNING: CPU: 1 PID: 6842 at arch/x86/kvm/x86.c:8152 __x86_set_memory_region+0x541/0x6c0
[   64.137947] Kernel panic - not syncing: panic_on_warn set ...
[   64.137947] 
[   64.145345] CPU: 1 PID: 6842 Comm: syz-executor7 Not tainted 4.13.0-rc2+ #10
[   64.152518] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   64.161868] Call Trace:
[   64.164457]  dump_stack+0x194/0x257
[   64.168079]  ? arch_local_irq_restore+0x53/0x53
[   64.172756]  panic+0x1e4/0x417
[   64.175937]  ? __warn+0x1d9/0x1d9
[   64.179394]  ? show_regs_print_info+0x65/0x65
[   64.183899]  ? __x86_set_memory_region+0x541/0x6c0
[   64.188818]  __warn+0x1c4/0x1d9
[   64.192098]  ? __x86_set_memory_region+0x541/0x6c0
[   64.197020]  report_bug+0x211/0x2d0
[   64.200652]  fixup_bug+0x40/0x90
[   64.204009]  do_trap+0x260/0x390
[   64.207377]  do_error_trap+0x120/0x390
[   64.211261]  ? do_trap+0x390/0x390
[   64.214785]  ? rwsem_down_write_failed_killable+0xe/0x10
[   64.220228]  ? __x86_set_memory_region+0x541/0x6c0
[   64.225172]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   64.230019]  do_invalid_op+0x1b/0x20
[   64.233722]  invalid_op+0x1e/0x30
[   64.237174] RIP: 0010:__x86_set_memory_region+0x541/0x6c0
[   64.242704] RSP: 0018:ffff8801d39277f0 EFLAGS: 00010297
[   64.248055] RAX: ffff8801c26ee100 RBX: ffff8801d39278c0 RCX: 1ffff100384ddd2e
[   64.255306] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000286
[   64.262561] RBP: ffff8801d39278e8 R08: 0000000000000001 R09: 1ffff1003a724eb9
[   64.269815] R10: ffff8801d3927590 R11: 0000000000000001 R12: ffff8801d3927880
[   64.277095] R13: 1ffff1003a724f04 R14: 00000000000101ff R15: 0000000000000000
[   64.284399]  ? kvmclock_update_fn+0x2b0/0x2b0
[   64.288942]  x86_set_memory_region+0x3e/0x60
[   64.293347]  kvm_arch_destroy_vm+0x7c4/0x990
[   64.297753]  ? kvm_arch_sync_events+0x30/0x30
[   64.302245]  ? mmu_notifier_unregister+0x433/0x5d0
[   64.307169]  ? __mmu_notifier_register+0x30/0x30
[   64.311918]  ? __free_pages+0x107/0x150
[   64.315889]  ? free_hot_cold_page+0x1120/0x1120
[   64.320564]  ? quarantine_put+0xeb/0x190
[   64.324627]  ? kfree+0xed/0x260
[   64.327899]  ? kvm_put_kvm+0x556/0xa90
[   64.331780]  ? free_pages+0x59/0x90
[   64.335400]  kvm_put_kvm+0x5d7/0xa90
[   64.339114]  ? kvm_uevent_notify_change.part.38+0x430/0x430
[   64.344837]  ? debugfs_remove+0x1f0/0x1f0
[   64.349043]  ? kvm_vm_release+0x50/0x50
[   64.353013]  kvm_vcpu_release+0x7b/0xa0
[   64.356982]  __fput+0x327/0x7e0
[   64.360264]  ? fput+0x140/0x140
[   64.363549]  ____fput+0x15/0x20
[   64.366823]  task_work_run+0x18a/0x260
[   64.370705]  ? task_work_cancel+0x210/0x210
[   64.375019]  ? exit_to_usermode_loop+0x98/0x2d0
[   64.379688]  exit_to_usermode_loop+0x26d/0x2d0
[   64.384267]  ? trace_event_raw_event_sys_exit+0x260/0x260
[   64.390080]  ? selinux_capable+0x40/0x40
[   64.394149]  syscall_return_slowpath+0x3a7/0x450
[   64.398899]  ? prepare_exit_to_usermode+0x220/0x220
[   64.403914]  ? entry_SYSCALL_64_fastpath+0x91/0xbe
[   64.408836]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   64.413842]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   64.418598]  entry_SYSCALL_64_fastpath+0xbc/0xbe
[   64.423352] RIP: 0033:0x4512c9
[   64.426523] RSP: 002b:00007f7577010c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000021
[   64.434238] RAX: 000000000000000a RBX: 0000000000718000 RCX: 00000000004512c9
[   64.441493] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000007
[   64.448750] RBP: 00000000000004b0 R08: 0000000000000000 R09: 0000000000000000
[   64.456005] R10: 0000000000000000 R11: 0000000000000216 R12: 00000000004b6699
[   64.463260] R13: 00000000ffffffff R14: 0000000000000007 R15: 000000000000000a
[   64.471060] Dumping ftrace buffer:
[   64.474615]    (ftrace buffer empty)
[   64.478292] Kernel Offset: disabled
[   64.481886] Rebooting in 86400 seconds..