R13: 0000000000000404 R14: 00000000006f9100 R15: 0000000000000023
kasan: CONFIG_KASAN_INLINE enabled
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
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: 12124 Comm: syz-executor4 Not tainted 4.17.0-rc1+ #8
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:ffff8801c68df318 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 1ffff10038d1be64 RCX: ffffffff819cab6b
RDX: 0000000000000021 RSI: ffffffff819ef797 RDI: 0000000000000108
RBP: ffff8801c68df398 R08: ffff8801b7e521c0 R09: ffff8801c68df050
R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88018d52b3b0 R15: 0000000000000000
FS:  0000000002899940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000002899c10 CR3: 00000001b046c000 CR4: 00000000001406e0
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:355 [inline]
 shrink_slab.part.39+0x330/0xf90 mm/vmscan.c:512
 shrink_slab+0xa1/0xc0 mm/vmscan.c:487
 shrink_node+0x4f2/0x1740 mm/vmscan.c:2542
 shrink_zones mm/vmscan.c:2775 [inline]
 do_try_to_free_pages+0x3c9/0x1240 mm/vmscan.c:2837
 try_to_free_mem_cgroup_pages+0x475/0xc50 mm/vmscan.c:3127
 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 arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath+0x516/0x5c0 arch/x86/entry/common.c:265
 ret_from_fork+0x15/0x50 arch/x86/entry/entry_64.S:405
RIP: 0033:0x453a2a
RSP: 002b:0000000000a3ea70 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 0000000000a3ea70 RCX: 0000000000453a2a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000a3eab0 R08: 0000000000000001 R09: 0000000002899940
R10: 0000000002899c10 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000001380
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: ffff8801c68df318
RIP: shmem_unused_huge_count+0x8e/0x100 mm/shmem.c:561 RSP: ffff8801c68df318
general protection fault: 0000 [#2] SMP KASAN
---[ end trace db5c5d558b91cc08 ]---
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 12132 Comm: syz-executor7 Tainted: G      D           4.17.0-rc1+ #8