==================================================================
BUG: KASAN: use-after-free in ntfs_read_locked_inode+0x425a/0x5000 fs/ntfs/inode.c:677
Read of size 8 at addr ffff88809c4033d5 by task syz-executor.3/1072

CPU: 0 PID: 1072 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x194 mm/kasan/report.c:351
 kasan_report mm/kasan/report.c:409 [inline]
 __asan_report_load_n_noabort+0x6b/0x80 mm/kasan/report.c:440
 ntfs_read_locked_inode+0x425a/0x5000 fs/ntfs/inode.c:677
 ntfs_iget+0xfa/0x130 fs/ntfs/inode.c:190
Cannot find map_set index 0 as target
 load_and_init_mft_mirror fs/ntfs/super.c:1041 [inline]
 load_system_files fs/ntfs/super.c:1786 [inline]
 ntfs_fill_super+0xa5a/0x7170 fs/ntfs/super.c:2908
xt_hashlimit: overflow, try lower: 0/0
 mount_bdev+0x2b3/0x360 fs/super.c:1134
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0xe53/0x2a00 fs/namespace.c:2879
xt_hashlimit: overflow, try lower: 0/0
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3072
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x460b4a
RSP: 002b:00007fe83b69fa78 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe83b69fb10 RCX: 0000000000460b4a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fe83b69fad0
RBP: 00007fe83b69fad0 R08: 00007fe83b69fb10 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002007dc00

Allocated by task 4627:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
 kmem_cache_alloc+0x124/0x3c0 mm/slab.c:3552
 getname_flags+0xc8/0x550 fs/namei.c:138
 do_sys_open+0x1ce/0x410 fs/open.c:1075
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb

Freed by task 4627:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kmem_cache_free+0x7c/0x2b0 mm/slab.c:3758
 putname+0xcd/0x110 fs/namei.c:259
 do_sys_open+0x203/0x410 fs/open.c:1090
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb

The buggy address belongs to the object at ffff88809c402580
 which belongs to the cache names_cache of size 4096
The buggy address is located 3669 bytes inside of
 4096-byte region [ffff88809c402580, ffff88809c403580)
The buggy address belongs to the page:
page:ffffea0002710080 count:1 mapcount:0 mapping:ffff88809c402580 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff88809c402580 0000000000000000 0000000100000001
raw: ffffea00014ab5a0 ffffea00016f6920 ffff88823f8bb200 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88809c403280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88809c403300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88809c403380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff88809c403400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88809c403480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Cannot find map_set index 0 as target