BUG: unable to handle kernel paging request at ffff8801a336d000
PGD bc01067 P4D bc01067 PUD 1bba04063 PMD 18f3e6063 PTE 80000001a336d163
Oops: 000b [#1] PREEMPT SMP KASAN
CPU: 1 PID: 25234 Comm: syz-executor4 Not tainted 4.19.0-rc7+ #281
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__update_clear_spte_fast include/linux/compiler.h:215 [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:1998 [inline]
RIP: 0010:mmu_page_zap_pte+0x295/0x390 arch/x86/kvm/mmu.c:2576
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:ffff880197f0f1d8 EFLAGS: 00010a02
IPVS: length: 64 != 8
RAX: dffffc0000000000 RBX: 1ffff10032fe1e40 RCX: ffffc90009eba000
RDX: 1ffff1003466da00 RSI: ffffffff8111178b RDI: 0000000000000007
RBP: ffff880197f0f2a8 R08: ffff8801d8d40480 R09: 1ffffffff1273965
R10: ffffed003b5e4732 R11: ffff8801daf23993 R12: 1ffff10032fe1e3c
R13: ffff8801a336d000 R14: 0000000000000004 R15: 0000000000000000
FS:  00007f5dbd5ed700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8801a336d000 CR3: 00000001c864b000 CR4: 00000000001426e0
IPVS: length: 64 != 8
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kvm_mmu_page_unlink_children arch/x86/kvm/mmu.c:2593 [inline]
 kvm_mmu_prepare_zap_page+0x1f9/0x1510 arch/x86/kvm/mmu.c:2637
 kvm_zap_obsolete_pages arch/x86/kvm/mmu.c:5736 [inline]
 kvm_mmu_invalidate_zap_all_pages+0x348/0x7b0 arch/x86/kvm/mmu.c:5777
kobject: 'loop2' (00000000b3f31ca7): kobject_uevent_env
kobject: 'loop2' (00000000b3f31ca7): fill_kobj_path: path = '/devices/virtual/block/loop2'
 kvm_arch_flush_shadow_all+0x15/0x20 arch/x86/kvm/x86.c:9215
 kvm_mmu_notifier_release+0x59/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:497
 mmu_notifier_unregister+0x1ff/0x600 mm/mmu_notifier.c:396
kobject: 'loop2' (00000000b3f31ca7): kobject_uevent_env
kobject: 'loop2' (00000000b3f31ca7): fill_kobj_path: path = '/devices/virtual/block/loop2'
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:748 [inline]
 kvm_put_kvm+0x6c0/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:773
 kvm_vcpu_release+0x7b/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2407
 __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:193 [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: 0033:0x4573d7
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 5d b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5dbd5eb098 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000018 RCX: 00000000004573d7
RDX: 00007f5dbd5eb6f0 RSI: 000000008138ae83 RDI: 0000000000000005
RBP: 0000000020017000 R08: 0000000000000001 R09: 0000000000000028
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000fec00000
R13: 00000000ffffffff R14: 00000000004d7cf8 R15: 00000000ffffffff
Modules linked in:
CR2: ffff8801a336d000
---[ end trace 4e147d71d1f205ff ]---
RIP: 0010:__update_clear_spte_fast include/linux/compiler.h:215 [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:1998 [inline]
RIP: 0010:mmu_page_zap_pte+0x295/0x390 arch/x86/kvm/mmu.c:2576
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:ffff880197f0f1d8 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: 1ffff10032fe1e40 RCX: ffffc90009eba000
RDX: 1ffff1003466da00 RSI: ffffffff8111178b RDI: 0000000000000007
RBP: ffff880197f0f2a8 R08: ffff8801d8d40480 R09: 1ffffffff1273965
R10: ffffed003b5e4732 R11: ffff8801daf23993 R12: 1ffff10032fe1e3c
R13: ffff8801a336d000 R14: 0000000000000004 R15: 0000000000000000
FS:  00007f5dbd5ed700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8801a336d000 CR3: 00000001c864b000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400