WARNING: CPU: 0 PID: 3694 at arch/x86/kvm/x86.c:7370 kvm_arch_vcpu_ioctl_run+0x1c7/0x5c80 arch/x86/kvm/x86.c:7370
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3694 Comm: syzkaller172576 Not tainted 4.15.0-rc8-mm1+ #59
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+0x194/0x257 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+0x2d7/0x3e0 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:1096
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1c7/0x5c80 arch/x86/kvm/x86.c:7370
RSP: 0018:ffff8801d92a76b0 EFLAGS: 00010293
RAX: ffff8801d9b42280 RBX: ffff8801c3b41000 RCX: ffffffff810df547
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801c3351160
RBP: ffff8801d92a7a40 R08: 1ffff1003866acc3 R09: 0000000000000001
R10: ffff8801d92a7690 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d38b3080 R14: ffff8801c3350f40 R15: ffff8801c3350f40
 kvm_vcpu_ioctl+0x6f1/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2555
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x445ad9
RSP: 002b:00007f90f5734da8 EFLAGS: 00000293 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000006dac6c RCX: 0000000000445ad9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 000000000000001d
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dac68
R13: 6d766b2f7665642f R14: 00007f90f57359c0 R15: 0000000000000009
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..