BUG: unable to handle kernel paging request at 00000000981d0ac1
IP: lock_acquire+0x183/0x580 kernel/locking/lockdep.c:4002
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: 3315 Comm: syz-executor7 Not tainted 4.15.0-rc2-next-20171206+ #60
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lock_acquire+0x183/0x580 kernel/locking/lockdep.c:4002
RSP: 0018:ffff8801c8a1f970 EFLAGS: 00010046
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8801c4570000 RSI: 0000000000000000 RDI: ffff8801c4570884
RBP: ffff8801c8a1fa68 R08: 0000000000000001 R09: 0000000000000000
R10: 1ffff10039143f34 R11: ffff8801c4570000 R12: 1ffff10039143f34
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000001b33940(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff8 CR3: 00000001c67dd000 CR4: 00000000001426e0
Call Trace:
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:159
 add_wait_queue+0x86/0x2d0 kernel/sched/wait.c:29
 do_wait+0x1a9/0xa70 kernel/exit.c:1509
 kernel_wait4+0x1f5/0x370 kernel/exit.c:1669
 SYSC_wait4+0x134/0x140 kernel/exit.c:1681
 SyS_wait4+0x2c/0x40 kernel/exit.c:1677
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x40cdba
RSP: 002b:0000000000a6fa28 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000001b33914 RCX: 000000000040cdba
RDX: 0000000040000001 RSI: 0000000000a6fa4c RDI: ffffffffffffffff
RBP: 0000000000000155 R08: 0000000000000001 R09: 0000000001b33940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000011807 R15: 0000000000000010
Code: df 48 89 f9 48 c1 e9 03 0f b6 0c 01 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 fe 02 00 00 c7 82 84 08 00 00 01 00 00 00 <cc> 1f 44 00 00 65 8b 05 a1 c9 aa 7e 89 c0 48 0f a3 05 27 8a 08 
RIP: lock_acquire+0x183/0x580 kernel/locking/lockdep.c:4002 RSP: ffff8801c8a1f970
CR2: fffffffffffffff8
---[ end trace 90842eb1ddf51d87 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..