VMExit: intr_info=00000000 errcode=00000000 ilen=00000003
        reason=80000021 qualification=0000000000000002
IDTVectoring: info=00000000 errcode=00000000
TSC Offset = 0xfffffeabf3a4a35d
EPT pointer = 0x000000009f7d901e
WARNING: CPU: 0 PID: 27442 at arch/x86/kvm/mmu.c:830 mmu_spte_clear_track_bits+0x45f/0x520 arch/x86/kvm/mmu.c:830
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 27442 Comm: syz-executor1 Not tainted 4.20.0+ #395
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d3/0x2c6 lib/dump_stack.c:113
 panic+0x2ad/0x55f kernel/panic.c:189
 __warn.cold.8+0x20/0x52 kernel/panic.c:544
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:mmu_spte_clear_track_bits+0x45f/0x520 arch/x86/kvm/mmu.c:830
Code: 40 ff ff ff 31 ff 44 89 fe 48 ba 00 00 00 00 00 fc ff df c6 04 10 f8 e8 6f 74 70 00 45 85 ff 0f 85 65 fd ff ff e8 51 73 70 00 <0f> 0b e9 59 fd ff ff e8 45 73 70 00 4c 89 ef e8 3d 32 f7 ff 31 f6
RSP: 0018:ffff88805581ecf8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 400000003ede8c77 RCX: ffffc900081e3000
RDX: 0000000000040000 RSI: ffffffff8111435f RDI: 0000000000000005
RBP: ffff88805581ee10 R08: ffff88809a4c6600 R09: fffff940001f6f46
R10: fffff940001f6f46 R11: ffffea0000fb7a37 R12: 1ffff1100ab03da1
R13: 000000000003ede8 R14: ffff88805581ede8 R15: 0000000000000000
 drop_spte+0x24/0x220 arch/x86/kvm/mmu.c:1468
 mmu_page_zap_pte+0x2d3/0x3a0 arch/x86/kvm/mmu.c:2613
 kvm_mmu_page_unlink_children arch/x86/kvm/mmu.c:2635 [inline]
 kvm_mmu_prepare_zap_page+0x1f9/0x1530 arch/x86/kvm/mmu.c:2679
 kvm_zap_obsolete_pages arch/x86/kvm/mmu.c:5843 [inline]
 kvm_mmu_invalidate_zap_all_pages+0x348/0x7b0 arch/x86/kvm/mmu.c:5884
 kvm_arch_flush_shadow_all+0x15/0x20 arch/x86/kvm/x86.c:9456
 kvm_mmu_notifier_release+0x59/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:494
 mmu_notifier_unregister+0x1fa/0x600 mm/mmu_notifier.c:356
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:744 [inline]
 kvm_put_kvm+0x6c0/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:769
 kvm_vcpu_release+0x7b/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2491
 __fput+0x385/0xa50 fs/file_table.c:278
 ____fput+0x15/0x20 fs/file_table.c:309
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 get_signal+0x1558/0x1980 kernel/signal.c:2347
 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4579b9
Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f4e27b0fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000004579b9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4e27b106d4
R13: 00000000004c0a77 R14: 00000000004d22b0 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..