R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013
R13: 00000000000003fa R14: 00000000006f9010 R15: 0000000000000024
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
kasan: CONFIG_KASAN_INLINE enabled
general protection fault: 0000 [#1] SMP KASAN
kasan: GPF could be caused by NULL-ptr deref or user memory access
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 15045 Comm: syz-executor7 Not tainted 4.16.0+ #376
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:ffff8801c0faf498 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 1ffff100381f5e94 RCX: ffffffff8193da77
RDX: 0000000000000021 RSI: ffff8801c0faf7b0 RDI: 0000000000000108
RBP: ffff8801c0faf518 R08: ffffed003ae9a2c1 R09: ffffed003ae9a2c1
R10: 0000000000000001 R11: ffffed003ae9a2c0 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8801913ce770 R15: 0000000000000000
FS:  0000000001a05940(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1655bd7330 CR3: 00000001d8d16003 CR4: 00000000001626f0
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+0x38b/0xe90 mm/vmscan.c:475
 shrink_slab+0x9d/0xb0 mm/vmscan.c:442
 shrink_node+0x51e/0xf90 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+0x1f0/0x370 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+0x2d9/0x350 arch/x86/entry/common.c:196
 retint_user+0x8/0x18
RIP: 0033:0x408120
RSP: 002b:0000000000a3e970 EFLAGS: 00010287
RAX: 0000001b9bc20000 RBX: 00000000000005eb RCX: 000000000040f330
RDX: 0000001b9bc20004 RSI: 0000000000a3f930 RDI: 0000000000000000
RBP: 0000000000000013 R08: 0000000000000000 R09: 0000000001a05940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000001380
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: ffff8801c0faf498
RIP: shmem_unused_huge_count+0x8e/0x100 mm/shmem.c:561 RSP: ffff8801c0faf498
general protection fault: 0000 [#2] SMP KASAN
---[ end trace b0efecc26bf929c2 ]---
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 15049 Comm: syz-executor0 Tainted: G      D          4.16.0+ #376