loop0: detected capacity change from 0 to 4096
ntfs: (device loop0): is_boot_sector_ntfs(): Invalid end of sector marker.
==================================================================
BUG: KASAN: use-after-free in ntfs_attr_find+0x60c/0x9d4 fs/ntfs/attrib.c:609
Read of size 2 at addr ffff0000e369a042 by task syz-executor.0/4430

CPU: 1 PID: 4430 Comm: syz-executor.0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
Call trace:
 dump_backtrace+0x0/0x458 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 print_address_description+0x78/0x30c mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xec/0x158 mm/kasan/report.c:451
 __asan_report_load_n_noabort+0x40/0x4c mm/kasan/report_generic.c:319
 ntfs_attr_find+0x60c/0x9d4 fs/ntfs/attrib.c:609
 ntfs_attr_lookup+0x1d4/0x1bc0 fs/ntfs/attrib.c:1213
 ntfs_read_locked_inode+0x85c/0x38c0 fs/ntfs/inode.c:666
 ntfs_read_inode_mount+0xb70/0x2020 fs/ntfs/inode.c:2098
 ntfs_fill_super+0x151c/0x24bc fs/ntfs/super.c:2857
 mount_bdev+0x264/0x358 fs/super.c:1400
 ntfs_mount+0x44/0x58 fs/ntfs/super.c:3051
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611
 vfs_get_tree+0x90/0x274 fs/super.c:1530
 do_new_mount+0x228/0x810 fs/namespace.c:3034
 path_mount+0x5bc/0x1008 fs/namespace.c:3364
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount fs/namespace.c:3562 [inline]
 __arm64_sys_mount+0x514/0x5f0 fs/namespace.c:3562
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

The buggy address belongs to the page:
page:0000000008dc35a5 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x12369a
flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000000000 fffffc00038da5c8 fffffc00038da588 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000e3699f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000e3699f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000e369a000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                           ^
 ffff0000e369a080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000e369a100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
ntfs: (device loop0): ntfs_is_extended_system_file(): Inode hard link count doesn't match number of name attributes. You should run chkdsk.
ntfs: (device loop0): ntfs_read_locked_inode(): $DATA attribute is missing.
ntfs: (device loop0): ntfs_read_locked_inode(): Failed with error code -2.  Marking corrupt inode 0x0 as bad.  Run chkdsk.