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Date:   Mon, 21 Nov 2022 12:23:57 +0100
From:   Alexander Potapenko <>
To:     Eric Biggers <>
Subject: Re: [PATCH] fs: ext4: initialize fsdata in pagecache_write()

On Mon, Nov 14, 2022 at 7:20 PM Eric Biggers <> wrote:
> 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.

Please disregard this patch.

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

Alexander Potapenko
Software Engineer

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