WARNING: CPU: 1 PID: 10529 at arch/x86/kvm/x86.c:7305 kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 arch/x86/kvm/x86.c:7305
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 10529 Comm: syzkaller176639 Not tainted 4.15.0-rc5+ #149
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:1061
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 arch/x86/kvm/x86.c:7305
RSP: 0018:ffff8801c37ef580 EFLAGS: 00010293
RAX: ffff8801ca86a0c0 RBX: ffff8801ce933000 RCX: ffffffff810deeef
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801cde88520
RBP: ffff8801c37ef910 R08: 1ffff100386fde93 R09: 0000000000000001
R10: ffff8801c37ef930 R11: 0000000000000000 R12: 0000000000000000
R13: 1ffff100386fdf4d R14: ffff8801d3e7e680 R15: ffff8801cde88300
 kvm_vcpu_ioctl+0x64c/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2582
 kvm_vcpu_compat_ioctl+0x364/0x450 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2777
 C_SYSC_ioctl fs/compat_ioctl.c:1473 [inline]
 compat_SyS_ioctl+0x151/0x2a30 fs/compat_ioctl.c:1419
 do_syscall_32_irqs_on arch/x86/entry/common.c:327 [inline]
 do_fast_syscall_32+0x3ee/0xf9d arch/x86/entry/common.c:389
 entry_SYSENTER_compat+0x54/0x63 arch/x86/entry/entry_64_compat.S:125
RIP: 0023:0xf7f3cc79
RSP: 002b:00000000f7ef41fc EFLAGS: 00000297 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000000ae80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000003d0f00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..