------------[ cut here ]------------
WARNING: CPU: 0 PID: 2931 at arch/x86/kvm/x86.c:7226 kvm_arch_vcpu_ioctl_run+0x213/0x5870 arch/x86/kvm/x86.c:7226
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 2931 Comm: syzkaller244790 Not tainted 4.13.0-rc4+ #30
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 panic+0x1e4/0x417 kernel/panic.c:180
 __warn+0x1c4/0x1d9 kernel/panic.c:541
 report_bug+0x211/0x2d0 lib/bug.c:183
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:190
 do_trap_no_signal arch/x86/kernel/traps.c:224 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:273
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:310
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:323
 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:846
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x213/0x5870 arch/x86/kvm/x86.c:7226
RSP: 0018:ffff8801d3847670 EFLAGS: 00010297
RAX: ffff8801d380c0c0 RBX: ffff8801d03aa000 RCX: ffff8801d3c3045c
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d3c30260
RBP: ffff8801d3847a40 R08: 0000000000000001 R09: 0000000000000000
R10: ffff8801d3847a58 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffff8801d4330300 R15: ffff8801d3c30040
 kvm_vcpu_ioctl+0x64c/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2589
 vfs_ioctl fs/ioctl.c:45 [inline]
 do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:685
 SYSC_ioctl fs/ioctl.c:700 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x445ed9
RSP: 002b:00007f6113cc6d08 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445ed9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 0000000000000086 R08: 00007f6113cc7700 R09: 00007f6113cc7700
R10: 00007f6113cc7700 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffdc03098ff R14: 00007f6113cc79c0 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..