ntfs: (device loop1): is_boot_sector_ntfs(): Invalid end of sector marker.
ntfs: volume version 3.1.
ntfs: volume version 3.1.
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ntfs: volume version 3.1.
BUG: KASAN: use-after-free in ntfs_read_locked_inode+0x4429/0x52a0 fs/ntfs/inode.c:644
Read of size 8 at addr ffff8881b7c182e8 by task syz-executor/4417

CPU: 0 PID: 4417 Comm: syz-executor Not tainted 5.3.0-rc2+ #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x115/0x167 lib/dump_stack.c:113
 print_address_description+0x6f/0x2fe mm/kasan/report.c:351
 __kasan_report.cold.7+0x1b/0x3f mm/kasan/report.c:482
ntfs: volume version 3.1.
 kasan_report+0x12/0x17 mm/kasan/common.c:612
 __asan_report_load_n_noabort+0xf/0x20 mm/kasan/generic_report.c:142
 ntfs_read_locked_inode+0x4429/0x52a0 fs/ntfs/inode.c:644
 ntfs_iget+0xe6/0x120 fs/ntfs/inode.c:176
 load_and_init_quota fs/ntfs/super.c:1392 [inline]
 load_system_files+0x55fa/0x6530 fs/ntfs/super.c:2103
 ntfs_fill_super+0x12ad/0x2d50 fs/ntfs/super.c:2894
 mount_bdev+0x27b/0x340 fs/super.c:1283
 ntfs_mount+0x10/0x20 fs/ntfs/super.c:3051
 legacy_get_tree+0x103/0x1f0 fs/fs_context.c:661
 vfs_get_tree+0x8b/0x360 fs/super.c:1413
 do_new_mount fs/namespace.c:2791 [inline]
 do_mount+0x584/0x1b40 fs/namespace.c:3111
 ksys_mount+0xba/0xe0 fs/namespace.c:3320
 __do_sys_mount fs/namespace.c:3334 [inline]
 __se_sys_mount fs/namespace.c:3331 [inline]
 __x64_sys_mount+0xb9/0x150 fs/namespace.c:3331
 do_syscall_64+0xd6/0x550 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457e5a
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 8f fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ba 8f fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f1e1651fbb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 0000000000457e5a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f1e1651fc00
RBP: 000000000000005a R08: 0000000020077a00 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 000000000000066c R14: 00000000006fcac0 R15: 0000000000000000

The buggy address belongs to the page:
page:ffffea0006df0600 refcount:1 mapcount:1 mapping:ffff8881ce078dd9 index:0x178c
anon 
flags: 0x2fffc0000080034(uptodate|lru|active|swapbacked)
raw: 02fffc0000080034 ffffea000708ffc8 ffffea0006dc6088 ffff8881ce078dd9
raw: 000000000000178c 0000000000000000 0000000100000000 ffff8881da262c80
page dumped because: kasan: bad access detected
page->mem_cgroup:ffff8881da262c80

Memory state around the buggy address:
 ffff8881b7c18180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881b7c18200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881b7c18280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                          ^
 ffff8881b7c18300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881b7c18380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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