linux-kernel - Re: [PATCH v3 0/3] add fault injection to user memory access

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Message-ID: <CAAeHK+z9xVfW_W1u=ZatPXQ+2UH9khuW2yM96BcgLmm8ENzymg@mail.gmail.com>
Date:   Mon, 31 Aug 2020 20:59:04 +0200
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     albert.linde@...il.com, Borislav Petkov <bp@...en8.de>,
        Ingo Molnar <mingo@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Arnd Bergmann <arnd@...db.de>,
        Peter Zijlstra <peterz@...radead.org>, akinobu.mita@...il.com,
        "H. Peter Anvin" <hpa@...or.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Marco Elver <elver@...gle.com>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        Albert van der Linde <alinde@...gle.com>
Subject: Re: [PATCH v3 0/3] add fault injection to user memory access

On Mon, Aug 31, 2020 at 8:32 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Mon, 31 Aug 2020 17:17:30 +0000 albert.linde@...il.com wrote:
>
> > The goal of this series is to improve testing of fault-tolerance in
> > usages of user memory access functions, by adding support for fault
> > injection.
>
> Does anyone actually plan to use this feature, on an ongoing basis?
> It's the sort of thing which the various test robots could exploit, but
> I'm not sure that they are using fault injection?

Hi Andrew,

syzkaller/syzbot is using the existing fault injection modes and will
use this particular feature too.

Thanks!