BUG: unable to handle kernel paging request at ffff8801c4319000 PGD bc01067 P4D bc01067 PUD 1d9bdc063 PMD 1bd17e063 PTE 80000001c4319163 Oops: 000b [#1] PREEMPT SMP KASAN CPU: 0 PID: 1724 Comm: syz-executor0 Not tainted 4.19.0+ #306 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__update_clear_spte_fast include/linux/compiler.h:206 [inline] RIP: 0010:mmu_spte_clear_no_track arch/x86/kvm/mmu.c:819 [inline] RIP: 0010:drop_parent_pte arch/x86/kvm/mmu.c:2004 [inline] RIP: 0010:mmu_page_zap_pte+0x29e/0x3a0 arch/x86/kvm/mmu.c:2582 Code: 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c7 85 58 ff ff ff 00 00 00 00 48 c1 ea 03 80 3c 02 00 0f 85 d4 00 00 00 48 c1 eb 03 <49> c7 45 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 be 01 00 RSP: 0018:ffff88018790f158 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: 1ffff10030f21e30 RCX: ffffffff8111493b RDX: 1ffff10038863200 RSI: ffffffff81114a1b RDI: 0000000000000007 RBP: ffff88018790f228 R08: ffff88018c9b0640 R09: ffffed003b5c5b57 R10: ffffed003b5c5b57 R11: ffff8801dae2dabb R12: 1ffff10030f21e2c R13: ffff8801c4319000 R14: 0000000000000004 R15: 0000000000000000 FS: 0000000000cc5940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8801c4319000 CR3: 00000001bcb6f000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kvm_mmu_page_unlink_children arch/x86/kvm/mmu.c:2599 [inline] kvm_mmu_prepare_zap_page+0x215/0x1850 arch/x86/kvm/mmu.c:2643 kvm_zap_obsolete_pages arch/x86/kvm/mmu.c:5794 [inline] kvm_mmu_invalidate_zap_all_pages+0x348/0x7b0 arch/x86/kvm/mmu.c:5835 kvm_arch_flush_shadow_all+0x15/0x20 arch/x86/kvm/x86.c:9357 kvm_mmu_notifier_release+0x59/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:495 mmu_notifier_unregister+0x1fa/0x600 mm/mmu_notifier.c:365 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:745 [inline] kvm_put_kvm+0x6c0/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:770 kvm_vcpu_release+0x7b/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2413 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 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: 0033:0x411021 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:0000000000a3fd90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000411021 RDX: 0000000000000000 RSI: 0000000000730a90 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000a3fcb0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 00000000000009d2 R15: 0000000000000000 Modules linked in: CR2: ffff8801c4319000 ---[ end trace 80948492d9a2e285 ]--- RIP: 0010:__update_clear_spte_fast include/linux/compiler.h:206 [inline] RIP: 0010:mmu_spte_clear_no_track arch/x86/kvm/mmu.c:819 [inline] RIP: 0010:drop_parent_pte arch/x86/kvm/mmu.c:2004 [inline] RIP: 0010:mmu_page_zap_pte+0x29e/0x3a0 arch/x86/kvm/mmu.c:2582 Code: 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c7 85 58 ff ff ff 00 00 00 00 48 c1 ea 03 80 3c 02 00 0f 85 d4 00 00 00 48 c1 eb 03 <49> c7 45 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 be 01 00 RSP: 0018:ffff88018790f158 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: 1ffff10030f21e30 RCX: ffffffff8111493b RDX: 1ffff10038863200 RSI: ffffffff81114a1b RDI: 0000000000000007 RBP: ffff88018790f228 R08: ffff88018c9b0640 R09: ffffed003b5c5b57 R10: ffffed003b5c5b57 R11: ffff8801dae2dabb R12: 1ffff10030f21e2c R13: ffff8801c4319000 R14: 0000000000000004 R15: 0000000000000000 FS: 0000000000cc5940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8801c4319000 CR3: 00000001bcb6f000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400