From 4e8011ffec79717e5fdac43a7e79faf811a384b7 Mon Sep 17 00:00:00 2001
From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: Tue, 2 Sep 2025 19:43:24 +0900
Subject: [PATCH] ntfs3: pretend $Extend records as regular files

Since commit af153bb63a33 ("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>
---
 fs/ntfs3/inode.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index 37cbbee7fa580..b08b009121653 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -471,6 +471,7 @@ end_enum:
 		   fname->home.seq == cpu_to_le16(MFT_REC_EXTEND)) {
 		/* Records in $Extend are not a files or general directories. */
 		inode->i_op = &ntfs_file_inode_operations;
+		mode = S_IFREG;
 	} else {
 		err = -EINVAL;
 		goto out;
-- 
2.47.3