WARNING: CPU: 0 PID: 5137 at arch/x86/kvm/x86.c:7375 kvm_arch_vcpu_ioctl_run+0x14d/0x59e0 arch/x86/kvm/x86.c:7375
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 5137 Comm: syzkaller023497 Not tainted 4.15.0-rc6-next-20180105+ #89
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x137/0x198 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x249/0x290 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x14d/0x59e0 arch/x86/kvm/x86.c:7375
RSP: 0018:ffff8801c7617ac0 EFLAGS: 00010293
RAX: ffff8801c7cda400 RBX: ffff8801ce485000 RCX: ffffffff810b889d
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801c6ba1f20
RBP: ffff8801c7617c00 R08: 1ffff10038d74e7b R09: 0000000000000001
R10: ffff8801c7617aa0 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9bca500 R14: ffff8801c6ba1d00 R15: ffff8801c6ba1d00
 kvm_vcpu_ioctl+0x601/0xcb0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2555
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x190/0xfe0 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x445d79
RSP: 002b:00007fc31f8aada8 EFLAGS: 00000297 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445d79
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dbc38
R13: 6d766b2f7665642f R14: 00007fc31f8ab9c0 R15: 0000000000000009
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..