Re: [PATCH v2] hex2bin: make the function hex_to_bin constant-time

[Stafford Horne]

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@xxxxxxxxxxxxxxxxxxxx> 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@antec $ dig +short א.cc
    147.75.79.213
    shorne@antec $ 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@antec $ /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@antec $ cat /etc/redhat-release
    Fedora release 34 (Thirty Four)

-Stafford