fs/ntfs3: Add rough attr alloc_size check

Reported-by: syzbot+c6d94bedd910a8216d25@syzkaller.appspotmail.com
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c
index 2a375247b3c09b4275bf0e0ec77d20a315be2ffe..427c71be0f087bf8365138903dbccffbef9335b4 100644 (file)
--- a/fs/ntfs3/record.c
+++ b/fs/ntfs3/record.c
@@ -331,6 +331,9 @@ struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr)
 
                if (attr->nres.c_unit)
                        return NULL;
+
+               if (alloc_size > mi->sbi->volume.size)
+                       return NULL;
        }
 
        return attr;