WARNING: CPU: 1 PID: 15879 at arch/x86/kvm/mmu.c:830 mmu_spte_clear_track_bits+0x43a/0x500 arch/x86/kvm/mmu.c:830
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 15879 Comm: syz-executor4 Not tainted 4.20.0+ #2
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+0x1db/0x2d0 lib/dump_stack.c:113
 panic+0x2cb/0x589 kernel/panic.c:189
 __warn.cold+0x20/0x4b kernel/panic.c:544
kobject: 'kvm' (000000009bf87733): kobject_uevent_env
kobject: 'kvm' (000000009bf87733): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:mmu_spte_clear_track_bits+0x43a/0x500 arch/x86/kvm/mmu.c:830
Code: 45 89 67 90 31 ff 44 89 e6 48 ba 00 00 00 00 00 fc ff df c6 04 10 f8 e8 84 5d 70 00 45 85 e4 0f 85 74 fd ff ff e8 f6 5b 70 00 <0f> 0b e9 68 fd ff ff e8 ea 5b 70 00 4c 89 f7 e8 a2 24 f7 ff 31 f6
kobject: 'kvm' (000000009bf87733): kobject_uevent_env
RSP: 0018:ffff88804a4df0d8 EFLAGS: 00010212
RAX: 0000000000040000 RBX: 400000005f860c77 RCX: ffffc9000e645000
RDX: 0000000000008fce RSI: ffffffff811125ba RDI: 0000000000000005
RBP: ffff88804a4df1b0 R08: ffff8880514505c0 R09: fffff940002fc307
R10: fffff940002fc306 R11: ffffea00017e1837 R12: 0000000000000000
R13: 1ffff1100949be1d R14: 000000000005f860 R15: ffff88804a4df188
kobject: 'kvm' (000000009bf87733): kobject_uevent_env
kobject: 'kvm' (000000009bf87733): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000009bf87733): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 drop_spte+0x24/0x220 arch/x86/kvm/mmu.c:1468
 mmu_page_zap_pte+0x2e2/0x3b0 arch/x86/kvm/mmu.c:2613
 kvm_mmu_page_unlink_children arch/x86/kvm/mmu.c:2635 [inline]
 kvm_mmu_prepare_zap_page+0x19d/0x1440 arch/x86/kvm/mmu.c:2679
 kvm_zap_obsolete_pages arch/x86/kvm/mmu.c:5843 [inline]
 kvm_mmu_invalidate_zap_all_pages+0x53e/0x710 arch/x86/kvm/mmu.c:5884
 kvm_arch_flush_shadow_all+0x16/0x20 arch/x86/kvm/x86.c:9456
 kvm_mmu_notifier_release+0x5c/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:494
 mmu_notifier_unregister+0x1dd/0x5e0 mm/mmu_notifier.c:356
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:744 [inline]
 kvm_put_kvm+0x6aa/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:769
 kvm_vm_release+0x44/0x60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:780
 __fput+0x3c5/0xb10 fs/file_table.c:278
 ____fput+0x16/0x20 fs/file_table.c:309
 task_work_run+0x1f4/0x2b0 kernel/task_work.c:113
 get_signal+0x168d/0x19b0 kernel/signal.c:2347
 do_signal+0x91/0x1e80 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop+0x2f7/0x3b0 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+0x696/0x800 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457d37
Code: 48 83 c4 08 48 89 d8 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 89 e8 48 f7 d8 48 39 c3 0f 92 c0 eb 92 66 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 cd b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7cd3ffb098 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000457d37
RDX: 00007f7cd3ffb510 RSI: 000000004020ae46 RDI: 0000000000000004
RBP: 0000000020fe8000 R08: 00007f7cd3ffb0a0 R09: 000000000073c180
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000fec00000
R13: 0000000000000004 R14: 00000000004db2c0 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..