linux-kernel - Re: [PATCH v2] hex2bin: make the function hex_to

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Message-ID: <YnLeH7kBImX5XLNn@antec>
Date:   Thu, 5 May 2022 05:12:15 +0900
From:   Stafford Horne <shorne@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        Mikulas Patocka <mpatocka@...hat.com>,
        Andy Shevchenko <andy@...nel.org>,
        device-mapper development <dm-devel@...hat.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Mike Snitzer <msnitzer@...hat.com>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        Milan Broz <gmazyland@...il.com>
Subject: Re: [PATCH v2] hex2bin: make the function hex_to_bin constant-time

On Wed, May 04, 2022 at 01:00:36PM -0700, Linus Torvalds wrote:
> On Wed, May 4, 2022 at 12:51 PM Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
> >
> > But I don't think that it's the browser, actually. Even 'nslookup'
> > refuses to touch it with
> >
> >    ** server can't find א.cc: SERVFAIL
> >
> > and it seems it's literally the local dns caching (dnsmasq?)
> 
> Looks like Fedora builds dnsmasq with 'no-i18n', although "dnsmasq -v"
> also shows "IDN2", so who knows.. Maybe it's some default config issue
> rather than the build configuration.
> 
>                   Linus

Which version of Fedora? I use a pretty vanilla Fedora 34 install and it seems to
be working ok for me.

    shorne@...ec $ dig +short א.cc
    147.75.79.213
    shorne@...ec $ nslookup א.cc
    Server:         127.0.0.53
    Address:        127.0.0.53#53

    Non-authoritative answer:
    Name:   א.cc
    Address: 147.75.79.213
    Name:   א.cc
    Address: 2604:1380:1:4d00::5

    shorne@...ec $ /lib64/ld-linux-x86-64.so.2 --version
    ld.so (GNU libc) release release version 2.33.
    Copyright (C) 2021 Free Software Foundation, Inc.
    This is free software; see the source for copying conditions.
    There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
    PARTICULAR PURPOSE.

    shorne@...ec $ cat /etc/redhat-release
    Fedora release 34 (Thirty Four)

-Stafford