BUG: unable to handle kernel paging request at 0000000023bb9871
IP: lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021
PGD 5e28067 P4D 5e28067 PUD 5e2a067 PMD 0 
Oops: 0002 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 15558 Comm: syz-executor4 Not tainted 4.15.0-rc2-next-20171204+ #58
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: 00000000b00e47ee task.stack: 0000000026490dcc
RIP: 0010:lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021
RSP: 0018:ffff8801c6c27040 EFLAGS: 00010046
RAX: 0000000000000007 RBX: 1ffff10038d84e0d RCX: ffffffff8107b933
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801c2018dc4
RBP: ffff8801c6c271b0 R08: 0000000000000002 R09: 0000000000000005
R10: 0000000000000000 R11: ffffffff8748dd60 R12: ffff8801c2018540
R13: ffff8801c6c27188 R14: ffff8801c3bdcd58 R15: ffff8801c2018540
FS:  00007f24d73d8700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff8 CR3: 00000001cf834000 CR4: 00000000001426e0
DR0: 0000000000000004 DR1: 0000000000010000 DR2: 000000000000f004
DR3: 0000000000000000 DR6: 00000000fffe0ff3 DR7: 0000000000000400
Call Trace:
 up_read+0x1a/0x40 kernel/locking/rwsem.c:119
 kvm_host_page_size+0x10f/0x140 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1238
 host_mapping_level arch/x86/kvm/mmu.c:1068 [inline]
 mapping_level+0x153/0x3d0 arch/x86/kvm/mmu.c:1118
 tdp_page_fault+0x256/0xa70 arch/x86/kvm/mmu.c:3883
 kvm_mmu_page_fault+0x10d/0x2f0 arch/x86/kvm/mmu.c:4927
 handle_ept_violation+0x198/0x550 arch/x86/kvm/vmx.c:6544
 vmx_handle_exit+0x25d/0x1ce0 arch/x86/kvm/vmx.c:8893
 vcpu_enter_guest arch/x86/kvm/x86.c:7084 [inline]
 vcpu_run arch/x86/kvm/x86.c:7146 [inline]
 kvm_arch_vcpu_ioctl_run+0x1cb4/0x5c60 arch/x86/kvm/x86.c:7314
 kvm_vcpu_ioctl+0x64c/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2555
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x4529d9
RSP: 002b:00007f24d73d7c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 00000000004529d9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000016
RBP: 00000000000001f6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006effb0
R13: 00000000ffffffff R14: 00007f24d73d86d4 R15: 0000000000000006
Code: 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c4 08 00 00 41 c7 87 84 08 00 00 01 00 00 00 <cc> 1f 44 00 00 65 8b 05 4f d5 aa 7e 89 c0 48 0f a3 05 95 6b 08 
RIP: lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021 RSP: ffff8801c6c27040
CR2: fffffffffffffff8
---[ end trace 4f11e754eeb6778f ]---