linux-kernel - Re: fscache corruption in Linux 5.17?

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Message-ID: <507518.1650383808@warthog.procyon.org.uk>
Date:   Tue, 19 Apr 2022 16:56:48 +0100
From:   David Howells <dhowells@...hat.com>
To:     Max Kellermann <mk@...all.com>
Cc:     dhowells@...hat.com, linux-cachefs@...hat.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: fscache corruption in Linux 5.17?

Max Kellermann <mk@...all.com> wrote:

>  -                * For these first content media elements, the `loading` attribute will be omitted. By default, this is the case
>  +                * For these first content media elements, the `loading` efault, this is the case
>                   * for only the very first content media element.
>                   *
>                   * @since 5.9.0
>  @@ -5377,3 +5377,4 @@
>   
>          return $content_media_count;
>   }
>  +^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@

This is weird.  It looks like content got slid down by 31 bytes and 31 zero
bytes got added at the end.  I'm not sure how fscache would achieve that -
nfs's implementation should only be dealing with pages.

David