linux-kernel - Re: [PATCH] mm: add prototype for __add_to_page_cache

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20201223121136.GP874@casper.infradead.org>
Date:   Wed, 23 Dec 2020 12:11:36 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Souptick Joarder <jrdr.linux@...il.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Alex Shi <alex.shi@...ux.alibaba.com>
Subject: Re: [PATCH] mm: add prototype for __add_to_page_cache_locked()

On Wed, Dec 23, 2020 at 08:31:26AM +0000, Christoph Hellwig wrote:
> Can we please make the eBPF code stop referencing this function instead
> of papering over this crap?  It has no business poking into page cache
> internals.

The reference from the BPF code is simply "you can inject errors here".
And I think we want to be able to inject errors to test the error paths,
no?