==================================================================
kasan: CONFIG_KASAN_INLINE enabled
BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:188 [inline]
BUG: KASAN: use-after-free in list_empty include/linux/list.h:203 [inline]
BUG: KASAN: use-after-free in shrink_slab_memcg mm/vmscan.c:595 [inline]
BUG: KASAN: use-after-free in shrink_slab+0xa04/0xa60 mm/vmscan.c:671
Read of size 8 at addr ffff8801c1e65358 by task syz-executor1/16897

CPU: 0 PID: 16897 Comm: syz-executor1 Not tainted 4.18.0-rc4-next-20180713+ #7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
kasan: GPF could be caused by NULL-ptr deref or user memory access
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
general protection fault: 0000 [#1] SMP KASAN
CPU: 1 PID: 27255 Comm: syz-executor1 Not tainted 4.18.0-rc4-next-20180713+ #7
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:list_lru_from_memcg_idx mm/list_lru.c:56 [inline]
RIP: 0010:list_lru_count_one+0x156/0x460 mm/list_lru.c:201
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
Code: 
08 
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x30d mm/kasan/report.c:412
3c 
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
03 
 __read_once_size include/linux/compiler.h:188 [inline]
 list_empty include/linux/list.h:203 [inline]
 shrink_slab_memcg mm/vmscan.c:595 [inline]
 shrink_slab+0xa04/0xa60 mm/vmscan.c:671
0f 
8e 
b5 
02 
00 
00 
 shrink_node+0x429/0x16a0 mm/vmscan.c:2735
4d 
63 
bd 
d8 
0a 
00 
00 
e8 
7f 
35 d2 
 shrink_zones mm/vmscan.c:2964 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3026
ff 
48 
8d 
7b 
50 
 try_to_free_mem_cgroup_pages+0x49d/0xc90 mm/vmscan.c:3324
48 
b8 
00 
00 00 
00 
00 
fc 
ff 
df 
 reclaim_high.constprop.73+0x137/0x1e0 mm/memcontrol.c:2060
48 
89 
fa 
 mem_cgroup_handle_over_high+0x8d/0x130 mm/memcontrol.c:2085
48 
 tracehook_notify_resume include/linux/tracehook.h:195 [inline]
 exit_to_usermode_loop+0x287/0x380 arch/x86/entry/common.c:166
c1 
ea 
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
03 
<80> 
3c 
02 
00 
0f 
85 
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
d8 
RIP: 0033:0x45416a
Code: 
02 
f7 
00 
d8 
00 
64 
49 
89 
8d 
04 
46 
25 
c0 
d4 
4c 
02 
8b 
00 
6b 
00 
50 
64 
48 
4c 
ba 
8b 
00 
0c 
00 
25 
10 
RSP: 0018:ffff88019627f1e0 EFLAGS: 00010206
00 
00 
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81aa3a64
00 
RDX: 000000000000000a RSI: ffffffff81aa3ad1 RDI: 0000000000000050
31 
RBP: ffff88019627f270 R08: ffff8801d92e6480 R09: 0000000000000000
d2 4d 
R10: ffffed003982c870 R11: ffff8801cc164387 R12: 1ffff10032c4fe3d
8d 
R13: ffff8801a9168b80 R14: ffff88019627f248 R15: 0000000000000001
91 
FS:  0000000002388940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
d0 02 
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
00 
CR2: 0000000002388c10 CR3: 00000001d72f6000 CR4: 00000000001406e0
00 
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
31 
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
f6 
Call Trace:
bf 
11 
 list_lru_shrink_count include/linux/list_lru.h:122 [inline]
 super_cache_count+0x153/0x2e0 fs/super.c:146
00 
 do_shrink_slab+0x148/0xc50 mm/vmscan.c:458
20 
01 
b8 
38 
00 
00 
00 
0f 
 shrink_slab_memcg mm/vmscan.c:598 [inline]
 shrink_slab+0x861/0xa60 mm/vmscan.c:671
05 
<48> 
3d 
00 
f0 
 shrink_node+0x429/0x16a0 mm/vmscan.c:2735
ff 
ff 
0f 
87 
f5 
00 
00 00 
85 
 shrink_zones mm/vmscan.c:2964 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3026
c0 
41 
89 
c5 
0f 
 try_to_free_mem_cgroup_pages+0x49d/0xc90 mm/vmscan.c:3324
85 
fc 
00 
00 
RSP: 002b:00007ffc1f801280 EFLAGS: 00000246
 ORIG_RAX: 0000000000000038
RAX: 0000000000000474 RBX: 00007ffc1f801280 RCX: 000000000045416a
 reclaim_high.constprop.73+0x137/0x1e0 mm/memcontrol.c:2060
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffc1f8012c0 R08: 0000000000000001 R09: 0000000002388940
R10: 0000000002388c10 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 00000000007034c0
 mem_cgroup_handle_over_high+0x8d/0x130 mm/memcontrol.c:2085

 tracehook_notify_resume include/linux/tracehook.h:195 [inline]
 exit_to_usermode_loop+0x287/0x380 arch/x86/entry/common.c:166
Allocated by task 27196:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath+0x533/0x5e0 arch/x86/entry/common.c:268
 kmem_cache_alloc_trace+0x152/0x780 mm/slab.c:3620
 kmalloc include/linux/slab.h:513 [inline]
 kzalloc include/linux/slab.h:707 [inline]
 alloc_super+0xd4/0xb10 fs/super.c:199
 sget_fc+0x269/0x950 fs/super.c:533
 ret_from_fork+0x15/0x50 arch/x86/entry/entry_64.S:407
 vfs_get_super+0x6e/0x270 fs/super.c:1255
RIP: 0033:0x45416a
 proc_get_tree+0x88/0xb0 fs/proc/root.c:159
Code: 
 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1743
Bad RIP value.
 do_new_mount fs/namespace.c:2567 [inline]
 do_mount+0x6c1/0x1fb0 fs/namespace.c:2889
RSP: 002b:00007ffc1f801280 EFLAGS: 00000246
 ksys_mount+0x12d/0x140 fs/namespace.c:3105
 ORIG_RAX: 0000000000000038
 __do_sys_mount fs/namespace.c:3119 [inline]
 __se_sys_mount fs/namespace.c:3116 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3116
RAX: 0000000000000000 RBX: 00007ffc1f801280 RCX: 000000000045416a
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RBP: 00007ffc1f8012c0 R08: 0000000000000001 R09: 0000000002388940

R10: 0000000002388c10 R11: 0000000000000246 R12: 0000000000000001
Freed by task 40:
R13: 0000000000000000 R14: 0000000000000000 R15: 00000000007034c0
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
Modules linked in:
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
Dumping ftrace buffer:
 __cache_free mm/slab.c:3498 [inline]
 kfree+0xd9/0x260 mm/slab.c:3813
 destroy_super_work+0x40/0x50 fs/super.c:164
   (ftrace buffer empty)
 process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153
---[ end trace a753b754ec9586d0 ]---
 worker_thread+0x189/0x13c0 kernel/workqueue.c:2296
 kthread+0x345/0x410 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415
RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:list_lru_from_memcg_idx mm/list_lru.c:56 [inline]
RIP: 0010:list_lru_count_one+0x156/0x460 mm/list_lru.c:201

The buggy address belongs to the object at ffff8801c1e64c00
 which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 1880 bytes inside of
 4096-byte region [ffff8801c1e64c00, ffff8801c1e65c00)
Code: 
The buggy address belongs to the page:
page:ffffea0007079900 count:1 mapcount:0 mapping:ffff8801da800dc0 index:0x0 compound_mapcount: 0
08 
flags: 0x2fffc0000008100(slab|head)
raw: 02fffc0000008100 ffffea00073e4d08 ffffea0006a83208 ffff8801da800dc0
3c 
raw: 0000000000000000 ffff8801c1e64c00 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected
03 

Memory state around the buggy address:
 ffff8801c1e65200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801c1e65280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
0f 
>ffff8801c1e65300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff8801c1e65380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
8e 
 ffff8801c1e65400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================