BUG: unable to handle kernel paging request at 00000000e9fdbc93
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:
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Modules linked in:
CPU: 1 PID: 3079 Comm: syz-fuzzer 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_release+0x195/0xda0 kernel/locking/lockdep.c:4021
RSP: 0018:ffff8801cb8ef9f0 EFLAGS: 00010046
RAX: 0000000000000007 RBX: 1ffff1003971df43 RCX: ffffffff81b6c14a
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801cdebed04
RBP: ffff8801cb8efb60 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff87490d20 R12: ffff8801cdebe480
R13: ffff8801cb8efb38 R14: ffffffff85f44b80 R15: ffff8801cdebe480
FS:  00007fec9e946700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff8 CR3: 00000001cc9cf000 CR4: 00000000001426e0
Call Trace:
 rcu_lock_release include/linux/rcupdate.h:249 [inline]
 rcu_read_unlock include/linux/rcupdate.h:686 [inline]
 __fget+0x362/0x580 fs/file.c:696
 __fget_light+0x2f1/0x390 fs/file.c:740
 __fdget fs/file.c:748 [inline]
 __fdget_pos+0x6e/0x1a0 fs/file.c:759
 fdget_pos include/linux/file.h:67 [inline]
 SYSC_read fs/read_write.c:568 [inline]
 SyS_read+0x77/0x220 fs/read_write.c:566
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x48c4d4
RSP: 002b:000000c44360f2e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000001000 RCX: 000000000048c4d4
RDX: 000000000000000c RSI: 000000c42839e730 RDI: 000000000000001b
RBP: 00007ffce89f6350 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000c43f262000
R13: 00000000008964e3 R14: 0000000000000039 R15: 000000c423e83360
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 2f d7 aa 7e 89 c0 48 0f a3 05 b5 97 08 
RIP: lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021 RSP: ffff8801cb8ef9f0
CR2: fffffffffffffff8
---[ end trace a89f4fb8e73462e6 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..