WARNING: CPU: 0 PID: 10899 at arch/x86/kvm/x86.c:8255 __x86_set_memory_region+0x56e/0x7a0 arch/x86/kvm/x86.c:8255
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 10899 Comm: syz-executor2 Not tainted 4.15.0-rc3+ #219
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:177
 fixup_bug arch/x86/kernel/traps.c:246 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:930
RIP: 0010:__x86_set_memory_region+0x56e/0x7a0 arch/x86/kvm/x86.c:8255
RSP: 0018:ffff8801c07876a0 EFLAGS: 00010246
RAX: 0000000000010000 RBX: ffff8801c07877a8 RCX: ffffffff810b51ee
RDX: 0000000000010000 RSI: ffffc90002b3b000 RDI: 0000000000000282
RBP: ffff8801c07877d0 R08: ffff8801db41f480 R09: 1ffff100380f0e87
R10: ffff8801c02b4440 R11: 0000000000000001 R12: ffff8801c0787768
R13: 1ffff100380f0ed9 R14: ffff88018a429240 R15: 0000000000000000
 x86_set_memory_region+0x3e/0x60 arch/x86/kvm/x86.c:8267
 kvm_arch_destroy_vm+0x7c4/0x990 arch/x86/kvm/x86.c:8283
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:734 [inline]
 kvm_put_kvm+0x695/0xdf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:755
 kvm_vcpu_release+0x7b/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2402
 __fput+0x333/0x7f0 fs/file_table.c:210
 ____fput+0x15/0x20 fs/file_table.c:244
 task_work_run+0x199/0x270 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x296/0x310 arch/x86/entry/common.c:162
 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+0x94/0x96
RIP: 0033:0x452a39
RSP: 002b:00007f3f8786ac58 EFLAGS: 00000212 ORIG_RAX: 0000000000000021
RAX: 000000000000001f RBX: 0000000000758190 RCX: 0000000000452a39
RDX: 0000000000000000 RSI: 000000000000001f RDI: 0000000000000021
RBP: 000000000000005b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee928
R13: 00000000ffffffff R14: 00007f3f8786b6d4 R15: 000000000000000e
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..