BUG: unable to handle kernel paging request at 000000000b4f592d
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: 0 PID: 12528 Comm: syz-executor4 Not tainted 4.15.0-rc1-next-20171201+ #57
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: 000000003cf41592 task.stack: 0000000047b6df29
RIP: 0010:lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021
RSP: 0018:ffff8801d0c37530 EFLAGS: 00010046
RAX: 0000000000000007 RBX: 1ffff1003a186eab RCX: ffffffff810df8ba
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d0012d44
RBP: ffff8801d0c376a0 R08: 0000000000000001 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff8748cd60 R12: ffff8801d00124c0
R13: ffff8801d0c37678 R14: ffff88018ca18c98 R15: ffff8801d00124c0
FS:  00007f1b3b41b700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff8 CR3: 00000001d4266000 CR4: 00000000001426f0
Call Trace:
 rcu_lock_release include/linux/rcupdate.h:249 [inline]
 srcu_read_unlock include/linux/srcu.h:174 [inline]
 vcpu_enter_guest arch/x86/kvm/x86.c:6967 [inline]
 vcpu_run arch/x86/kvm/x86.c:7146 [inline]
 kvm_arch_vcpu_ioctl_run+0xd92/0x5c60 arch/x86/kvm/x86.c:7314
 kvm_vcpu_ioctl+0x64c/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2574
 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:00007f1b3b41ac58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1b3b419810 RCX: 00000000004529d9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000015
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000016
R13: 0000000020132000 R14: 00007f1b3b41b6d4 R15: 0000000000000003
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> 3f 05 00 00 65 8b 05 3f d7 aa 7e 89 c0 48 0f a3 05 c5 6c 08 
RIP: lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021 RSP: ffff8801d0c37530
CR2: fffffffffffffff8
---[ end trace 28ebbab4a7ebaeb8 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..