linux-kernel - Re: [PATCH RESEND] lib: fix bitmap_parse() on 64-bit big endian archs

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Message-ID: <CAHp75VcLu738ktasiUsgbKNyW-5vENpK2n9_OD5oFmhOzfCG6Q@mail.gmail.com>
Date:   Mon, 18 May 2020 14:35:09 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Alexander Gordeev <agordeev@...ux.ibm.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-s390@...r.kernel.org, Stable <stable@...r.kernel.org>,
        Yury Norov <yury.norov@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Amritha Nambiar <amritha.nambiar@...el.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Kees Cook <keescook@...omium.org>,
        Matthew Wilcox <willy@...radead.org>,
        Miklos Szeredi <mszeredi@...hat.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Steffen Klassert <steffen.klassert@...unet.com>,
        "Tobin C . Harding" <tobin@...nel.org>,
        Vineet Gupta <vineet.gupta1@...opsys.com>,
        Will Deacon <will.deacon@....com>,
        Willem de Bruijn <willemb@...gle.com>
Subject: Re: [PATCH RESEND] lib: fix bitmap_parse() on 64-bit big endian archs

On Mon, May 18, 2020 at 2:33 PM Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
>
> On Mon, May 18, 2020 at 1:40 PM Alexander Gordeev
> <agordeev@...ux.ibm.com> wrote:
> >
> > Commit 2d6261583be0 ("lib: rework bitmap_parse()") does
> > not take into account order of halfwords on 64-bit big
> > endian architectures.
>
> Thanks for report and the patch!
>
> Did it work before? Can we have a test case for that that we will see
> the failure?

Sorry, I wasn't clear enough. I meant a test case that is
arch-independent for this very issue (so, that I can run it on LE 64
machine and see a problem).

-- 
With Best Regards,
Andy Shevchenko