BUG: unable to handle kernel paging request at 00000000c314149f
IP: arch_futex_atomic_op_inuser arch/x86/include/asm/futex.h:67 [inline]
IP: futex_atomic_op_inuser kernel/futex.c:1588 [inline]
IP: futex_wake_op kernel/futex.c:1637 [inline]
IP: do_futex+0x14c8/0x2280 kernel/futex.c:3483
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: 14626 Comm: syz-executor6 Not tainted 4.15.0-rc1-next-20171130+ #56
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: 000000005f17dad6 task.stack: 000000005af7607c
RIP: 0010:arch_futex_atomic_op_inuser arch/x86/include/asm/futex.h:67 [inline]
RIP: 0010:futex_atomic_op_inuser kernel/futex.c:1588 [inline]
RIP: 0010:futex_wake_op kernel/futex.c:1637 [inline]
RIP: 0010:do_futex+0x14c8/0x2280 kernel/futex.c:3483
RSP: 0018:ffff8801cffafa18 EFLAGS: 00010246
RAX: 000000007fffffff RBX: 0000000040000002 RCX: ffffffff8164e3d9
RDX: 0000000000000000 RSI: ffffc900034e8000 RDI: 0000000000000000
RBP: ffff8801cffafe38 R08: 1ffffffff0d31367 R09: 0000000000000004
R10: 0000000000000000 R11: ffffffff8748cd60 R12: ffff8801d0f30180
R13: 0000000020000000 R14: dffffc0000000000 R15: ffff8801cffafe10
FS:  00007f66305e0700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff8 CR3: 00000001ccc2e000 CR4: 00000000001426f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff3 DR7: 0000000000bb060a
Call Trace:
 SYSC_futex kernel/futex.c:3533 [inline]
 SyS_futex+0x260/0x390 kernel/futex.c:3501
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x4529d9
RSP: 002b:00007f66305dfc58 EFLAGS: 00000212 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f66305e0700 RCX: 00000000004529d9
RDX: 0000000000000007 RSI: 0000000000000085 RDI: 0000000020062000
RBP: 0000000000000000 R08: 0000000020000000 R09: 0000000040000002
R10: 000000002085fff0 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000a6f7ff R14: 00007f66305e09c0 R15: 0000000000000000
Code: 31 d2 0f 1f 00 45 87 65 00 0f 1f 00 89 95 30 fc ff ff e9 1d ff ff ff e8 67 56 0b 00 31 d2 8b bd 00 fc ff ff 0f 1f 00 41 8b 45 00 <89> c1 31 f9 f0 41 0f b1 4d 00 75 f0 0f 1f 00 41 89 c4 89 95 30 
RIP: arch_futex_atomic_op_inuser arch/x86/include/asm/futex.h:67 [inline] RSP: ffff8801cffafa18
RIP: futex_atomic_op_inuser kernel/futex.c:1588 [inline] RSP: ffff8801cffafa18
RIP: futex_wake_op kernel/futex.c:1637 [inline] RSP: ffff8801cffafa18
RIP: do_futex+0x14c8/0x2280 kernel/futex.c:3483 RSP: ffff8801cffafa18
CR2: fffffffffffffff8
---[ end trace 03177b21d9e8d906 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..