Re: [PATCH V3] fs/ntfs3: check if the inode is bad before creating symlink

[Al Viro]

On Thu, Nov 21, 2024 at 11:13:29AM +0800, Lizhi Xu wrote:
>   user_path_at()->
>     filename_lookup()->
>       path_lookupat()->
>         lookup_last()->
>           walk_component()->
>             __lookup_slow()->
>               ntfs_lookup()->
>                 d_splice_alias()->
> 
> 2. The subsequent chmod fails, causing the inode to be set to bad.

What's wrong with "return an error"?

> 3. During the link operation, d_instantiate() is executed in ntfs_link() to associate the bad inode with the dentry.

Yecchhh...  If nothing else, check for is_bad_inode() should be there
for as long as make_bad_inode() is done on live inodes.