ntfs: (device loop0): is_boot_sector_ntfs(): Invalid end of sector marker.
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BUG: KASAN: use-after-free in ntfs_attr_find+0xacd/0xc20 fs/ntfs/attrib.c:611
Read of size 2 at addr ffff88809638a482 by task syz-executor607/7970

CPU: 1 PID: 7970 Comm: syz-executor607 Not tainted 4.14.293-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x191 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_attr_find+0xacd/0xc20 fs/ntfs/attrib.c:611
 ntfs_attr_lookup+0xeca/0x1f30 fs/ntfs/attrib.c:1207
 ntfs_read_inode_mount+0x726/0x2060 fs/ntfs/inode.c:1879
 ntfs_fill_super+0x9a6/0x7170 fs/ntfs/super.c:2871
 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:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
 SYSC_mount fs/namespace.c:3121 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3098
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f24578d403a
RSP: 002b:00007fffff6bb148 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fffff6bb1a0 RCX: 00007f24578d403a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffff6bb160
RBP: 00007fffff6bb160 R08: 00007fffff6bb1a0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 0000000020000260
R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000004

The buggy address belongs to the page:
page:ffffea000258e280 count:0 mapcount:0 mapping:          (null) index:0xffff88809638a640
flags: 0xfff00000000000()
raw: 00fff00000000000 0000000000000000 ffff88809638a640 00000000ffffffff
raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88809638a380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88809638a400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88809638a480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88809638a500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88809638a580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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