------------[ cut here ]------------
WARNING: CPU: 1 PID: 8131 at arch/x86/kvm/x86.c:8156 __x86_set_memory_region+0x56e/0x7a0 arch/x86/kvm/x86.c:8156
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 8131 Comm: syz-executor3 Not tainted 4.13.0-rc5-next-20170817+ #5
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 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+0x18/0x20 arch/x86/entry/entry_64.S:929
RIP: 0010:__x86_set_memory_region+0x56e/0x7a0 arch/x86/kvm/x86.c:8156
RSP: 0018:ffff88003cb871f0 EFLAGS: 00010297
RAX: ffff88003c9b4740 RBX: ffff88003cb872f8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000286
RBP: ffff88003cb87320 R08: 0000000000000000 R09: 1ffff10007970df9
R10: ffff88003cb86f90 R11: ffff880068de8310 R12: ffff88003cb872b8
R13: 1ffff10007970e43 R14: ffff88003668ea00 R15: 0000000000000000
 x86_set_memory_region+0x3e/0x60 arch/x86/kvm/x86.c:8168
 kvm_arch_destroy_vm+0x7b3/0x990 arch/x86/kvm/x86.c:8183
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:768 [inline]
 kvm_put_kvm+0x695/0xdf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:789
 kvm_vm_release+0x42/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:800
 __fput+0x327/0x7e0 fs/file_table.c:210
 ____fput+0x15/0x20 fs/file_table.c:246
 task_work_run+0x199/0x270 kernel/task_work.c:112
 get_signal+0x143d/0x17e0 kernel/signal.c:2160
 do_signal+0x94/0x1ee0 arch/x86/kernel/signal.c:808
 exit_to_usermode_loop+0x224/0x300 arch/x86/entry/common.c:158
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath+0x42f/0x500 arch/x86/entry/common.c:266
 entry_SYSCALL_64_fastpath+0xbc/0xbe
RIP: 0033:0x446739
RSP: 002b:00007f7993347c08 EFLAGS: 00000282 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 0000000000000008 RCX: 0000000000446739
RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000008
RBP: 0000000000708000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000282 R12: 00000000ffffffff
R13: 0000000000001d80 R14: 00000000006e3e40 R15: 000000000000ae41
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..