WARNING: CPU: 1 PID: 16608 at arch/x86/kvm/x86.c:8381 __x86_set_memory_region+0x56e/0x7a0 arch/x86/kvm/x86.c:8381
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 16608 Comm: syz-executor3 Not tainted 4.15.0-rc7-mm1+ #55
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:1085
RIP: 0010:__x86_set_memory_region+0x56e/0x7a0 arch/x86/kvm/x86.c:8381
RSP: 0018:ffff8801bd76f2d8 EFLAGS: 00010216
RAX: 0000000000010000 RBX: ffff8801bd76f3e0 RCX: ffffffff810b5b1e
RDX: 0000000000004e7e RSI: ffffc900032d3000 RDI: 0000000000000286
RBP: ffff8801bd76f408 R08: 0000000000000000 R09: 1ffff10037aede16
R10: ffff8801bd76f078 R11: 0000000000000001 R12: ffff8801bd76f3a0
R13: 1ffff10037aede60 R14: ffff8801a23ec500 R15: 0000000000000000
 x86_set_memory_region+0x3e/0x60 arch/x86/kvm/x86.c:8393
 kvm_arch_destroy_vm+0x79a/0x980 arch/x86/kvm/x86.c:8408
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:729 [inline]
 kvm_put_kvm+0x695/0xde0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:750
 kvm_vcpu_release+0x7b/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2378
 __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+0x133d/0x16c0 kernel/signal.c:2167
 do_signal+0x90/0x1eb0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0x258/0x2f0 arch/x86/entry/common.c:161
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264
 entry_SYSCALL_64_fastpath+0x9e/0xa0
RIP: 0033:0x452ac9
RSP: 002b:00007f70d2caac58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 000000000071c010 RCX: 0000000000452ac9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000016
RBP: 000000000000022e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f14f0
R13: 00000000ffffffff R14: 00007f70d2cab6d4 R15: 0000000000000007
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..