RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000017
R13: 00000000000003fa R14: 00000000006f8010 R15: 0000000000000021
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 6347 Comm: syz-executor6 Not tainted 4.16.0-rc7+ #373
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:shmem_unused_huge_count+0x8e/0x100 mm/shmem.c:561
RSP: 0018:ffff8801af13f3f8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 1ffff10035e27e80 RCX: ffffffff8193ee17
RDX: 0000000000000021 RSI: ffffc900074eb000 RDI: 0000000000000108
RBP: ffff8801af13f478 R08: ffff8801d8b51e58 R09: 1ffff10035e27e69
R10: ffff8801af13f310 R11: 0000000000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88017c61b1f0 R15: 0000000000000000
FS:  00007f6dc6f7d700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000001b93bf004 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 super_cache_count+0x96/0x280 fs/super.c:131
 do_shrink_slab mm/vmscan.c:310 [inline]
 shrink_slab.part.46+0x30c/0xe80 mm/vmscan.c:475
 shrink_slab+0x9d/0xb0 mm/vmscan.c:442
 shrink_node+0x51e/0xf70 mm/vmscan.c:2556
 shrink_zones mm/vmscan.c:2728 [inline]
 do_try_to_free_pages+0x383/0x1020 mm/vmscan.c:2790
 try_to_free_mem_cgroup_pages+0x44d/0xb40 mm/vmscan.c:3079
 reclaim_high.constprop.64+0x1e2/0x330 mm/memcontrol.c:1862
 mem_cgroup_handle_over_high+0x8d/0x130 mm/memcontrol.c:1887
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x242/0x2f0 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_64+0x6ec/0x940 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x454e79
RSP: 002b:00007f6dc6f7cc68 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: 0000000000000000 RBX: 00007f6dc6f7d6d4 RCX: 0000000000454e79
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004c02 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000007d R14: 00000000006f2c58 R15: 0000000000000000
Code: c1 e8 03 42 80 3c 28 00 75 6f 4d 8b a4 24 80 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 08 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 5e 48 8d 7d a8 48 ba 00 00 00 00 00 fc ff df 49 
RIP: __read_once_size include/linux/compiler.h:188 [inline] RSP: ffff8801af13f3f8
RIP: shmem_unused_huge_count+0x8e/0x100 mm/shmem.c:561 RSP: ffff8801af13f3f8
---[ end trace fc712ecef23c80b8 ]---