WARNING: CPU: 0 PID: 21961 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: 0 PID: 21961 Comm: syz-executor5 Not tainted 4.20.0+ #8
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
kobject: 'loop3' (00000000d9079853): kobject_uevent_env
 __warn.cold+0x20/0x4b kernel/panic.c:544
kobject: 'loop3' (00000000d9079853): fill_kobj_path: path = '/devices/virtual/block/loop3'
 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 24 d1 70 00 45 85 e4 0f 85 74 fd ff ff e8 96 cf 70 00 <0f> 0b e9 68 fd ff ff e8 8a cf 70 00 4c 89 f7 e8 a2 24 f7 ff 31 f6
RSP: 0018:ffff88806b5e6db8 EFLAGS: 00010293
RAX: ffff88806ac426c0 RBX: 4000000053064c77 RCX: ffffffff811125ac
RDX: 0000000000000000 RSI: ffffffff811125ba RDI: 0000000000000005
RBP: ffff88806b5e6e90 R08: ffff88806ac426c0 R09: fffff94000298327
R10: fffff94000298326 R11: ffffea00014c1937 R12: 0000000000000000
R13: 1ffff1100d6bcdb9 R14: 0000000000053064 R15: ffff88806b5e6e68
 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_release+0x1b4/0x610 mm/mmu_notifier.c:68
 mmu_notifier_release include/linux/mmu_notifier.h:232 [inline]
 exit_mmap+0x4ae/0x5d0 mm/mmap.c:3094
 __mmput kernel/fork.c:1051 [inline]
 mmput+0x240/0x640 kernel/fork.c:1072
 exit_mm kernel/exit.c:545 [inline]
 do_exit+0x9d3/0x2650 kernel/exit.c:854
 do_group_exit+0x177/0x430 kernel/exit.c:970
 get_signal+0x8b4/0x19b0 kernel/signal.c:2517
 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: 0033:0x457ec9
Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3bfb868cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000073bfa8 RCX: 0000000000457ec9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000073bfa8
RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000073bfac
R13: 00007fffdb242f3f R14: 00007f3bfb8699c0 R15: 000000000073bfac
Kernel Offset: disabled
Rebooting in 86400 seconds..