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ntfs: fix incorrect MFT record pointer passed to ntfs_attr_record_resize

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ntfs_new_attr_flags() passes the wrong MFT record to ntfs_attr_record_resize().
When the attribute is in an extent record, ctx->mrec points to the extent
but the function receives the base record pointer m, causing incorrect
size calculations in memmove.

Fix by passing ctx->mrec (the actual MFT record containing the attribute)
instead of m (the base MFT record) to ntfs_attr_record_resize().

Fixes: fc053f05ca ("ntfs: add reparse and ea operations")
Cc: stable@vger.kernel.org
Signed-off-by: Hongling Zeng <zenghongling@kylinos.cn>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Hongling Zeng 2026-08-24 13:41:15 +08:00 committed by Namjae Jeon
parent 0e4c839905
commit 8d139e3635
1 changed files with 1 additions and 1 deletions
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2
fs/ntfs/ea.c
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@ -764,7 +764,7 @@ static int ntfs_new_attr_flags(struct ntfs_inode *ni, __le32 fattr)
memmove((u8 *)a + mp_ofs, (u8 *)a + old_mp_ofs, mp_size);
}
err = ntfs_attr_record_resize(m, a, arec_size);
err = ntfs_attr_record_resize(ctx->mrec, a, arec_size);
if (unlikely(err))
goto err_out;