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ntfs3: pretend $Extend records as regular files 

Since commit af153bb63a ("vfs: catch invalid modes in may_open()")
requires any inode be one of S_IFDIR/S_IFLNK/S_IFREG/S_IFCHR/S_IFBLK/
S_IFIFO/S_IFSOCK type, use S_IFREG for $Extend records.

Reported-by: syzbot <syzbot+895c23f6917da440ed0d@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=895c23f6917da440ed0d
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Tetsuo Handa 2025-09-02 19:43:24 +09:00 committed by Konstantin Komarov
parent 21dc07ac9c
commit 4e8011ffec
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1 changed files with 1 additions and 0 deletions
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fs/ntfs3/inode.c
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@ -471,6 +471,7 @@ static struct inode *ntfs_read_mft(struct inode *inode,
fname->home.seq == cpu_to_le16(MFT_REC_EXTEND)) { fname->home.seq == cpu_to_le16(MFT_REC_EXTEND)) {
/* Records in $Extend are not a files or general directories. */ /* Records in $Extend are not a files or general directories. */
inode->i_op = &ntfs_file_inode_operations; inode->i_op = &ntfs_file_inode_operations;
mode = S_IFREG;
} else { } else {
err = -EINVAL; err = -EINVAL;
goto out; goto out;