Re: [PATCH] fs: ext4: initialize fsdata in pagecache_write()

[Eric Biggers]

On Mon, Nov 14, 2022 at 09:29:35AM +0100, Alexander Potapenko wrote:
> [PATCH] fs: ext4: initialize fsdata in pagecache_write()
>
> When aops->write_begin() does not initialize fsdata, KMSAN reports
> an error passing the latter to aops->write_end().
> 
> Fix this by unconditionally initializing fsdata.
> 
> Also speculatively fix similar issues in affs, f2fs, hfs, hfsplus,
> as suggested by Eric Biggers.

You might have better luck with separate patches for each filesystem, as it
might be hard to get someone to apply this patch otherwise.

If you do go with a single patch, then the subject prefix should be "fs:", not
"fs: ext4:".

- Eric