WARNING: CPU: 1 PID: 9450 at arch/x86/kvm/x86.c:8279 __x86_set_memory_region+0x56e/0x7a0 arch/x86/kvm/x86.c:8279
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 9450 Comm: syz-executor0 Not tainted 4.15.0+ #213
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:988
RIP: 0010:__x86_set_memory_region+0x56e/0x7a0 arch/x86/kvm/x86.c:8279
RSP: 0018:ffff8801cd417218 EFLAGS: 00010246
RAX: 0000000000010000 RBX: ffff8801cd417320 RCX: ffffffff810b571e
RDX: 0000000000010000 RSI: ffffc9000363b000 RDI: 0000000000000286
RBP: ffff8801cd417348 R08: 0000000000000000 R09: 1ffff10039a82dfe
R10: ffff8801cd416fb8 R11: 0000000000000001 R12: ffff8801cd4172e0
R13: 1ffff10039a82e48 R14: ffff88019f881e40 R15: 0000000000000000
 x86_set_memory_region+0x3e/0x60 arch/x86/kvm/x86.c:8291
 kvm_arch_destroy_vm+0x7d5/0x990 arch/x86/kvm/x86.c:8308
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:735 [inline]
 kvm_put_kvm+0x695/0xde0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:756
 kvm_vm_release+0x42/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:767
 __fput+0x327/0x7e0 fs/file_table.c:209
 ____fput+0x15/0x20 fs/file_table.c:243
 task_work_run+0x199/0x270 kernel/task_work.c:113
 get_signal+0x134b/0x16d0 kernel/signal.c:2299
 do_signal+0x90/0x1e90 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0x258/0x2f0 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_32_irqs_on arch/x86/entry/common.c:336 [inline]
 do_fast_syscall_32+0xbe8/0xfa1 arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x54/0x63 arch/x86/entry/entry_64_compat.S:129
RIP: 0023:0xf7ff7c79
RSP: 002b:00000000f77f308c EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: fffffffffffffffc RBX: 0000000000000014 RCX: 000000000000ae41
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 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..