RBP: 000000000072bea0 R08: 0000000020001740 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013
R13: 0000000000000440 R14: 00000000006fa6a0 R15: 0000000000000026
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: 0 PID: 13406 Comm: syz-executor7 Not tainted 4.17.0-rc4+ #40
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: 0000:ffff880187b87358 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 1ffff10030f70e6c RCX: ffffffff819cc68b
RDX: 0000000000000021 RSI: ffffffff819f1347 RDI: 0000000000000108
RBP: ffff880187b873d8 R08: ffff880189670540 R09: ffff880187b87090
R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8801c2636770 R15: 0000000000000000
FS:  0000000001581940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000728020 CR3: 00000001cc2f4000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 super_cache_count+0x98/0x280 fs/super.c:132
 do_shrink_slab mm/vmscan.c:374 [inline]
 shrink_slab.part.39+0x330/0xf90 mm/vmscan.c:531
 shrink_slab+0xa1/0xc0 mm/vmscan.c:506
 shrink_node+0x4f2/0x1740 mm/vmscan.c:2561
 shrink_zones mm/vmscan.c:2794 [inline]
 do_try_to_free_pages+0x3c9/0x1240 mm/vmscan.c:2856
 try_to_free_mem_cgroup_pages+0x475/0xc50 mm/vmscan.c:3146
 reclaim_high.constprop.67+0x12f/0x1d0 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+0x274/0x310 arch/x86/entry/common.c:166
 prepare_exit_to_usermode+0x32e/0x390 arch/x86/entry/common.c:196
 retint_user+0x8/0x18
RIP: 0033:0x4087ad
RSP: 002b:00007ffdaca56fb0 EFLAGS: 00010246
RAX: 0000000000000014 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 00000000004c2118
RBP: 0000000000000001 R08: 00007ffdaca57e4f R09: 0000000000000000
R10: 00007ffdaca56fe0 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000002 R14: 000000000072bea0 R15: 000000000072bea0
Code: c1 e8 03 42 80 3c 28 00 75 70 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 5f 48 8d 7d a8 49 8b 84 24 08 01 00 00 48 ba 00 
RIP: __read_once_size include/linux/compiler.h:188 [inline] RSP: ffff880187b87358
RIP: shmem_unused_huge_count+0x8e/0x100 mm/shmem.c:561 RSP: ffff880187b87358
---[ end trace c7a069f155f98c2f ]---