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Message-ID: <20220427100714.GC1724@1wt.eu>
Date:   Wed, 27 Apr 2022 12:07:14 +0200
From:   Willy Tarreau <w@....eu>
To:     kernel test robot <lkp@...el.com>
Cc:     netdev@...r.kernel.org, kbuild-all@...ts.01.org,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Moshe Kol <moshe.kol@...l.huji.ac.il>,
        Yossi Gilad <yossi.gilad@...l.huji.ac.il>,
        Amit Klein <aksecurity@...il.com>,
        linux-kernel@...r.kernel.org,
        "Jason A . Donenfeld" <Jason@...c4.com>
Subject: Re: [PATCH net 1/7] secure_seq: return the full 64-bit of the siphash

On Wed, Apr 27, 2022 at 05:56:41PM +0800, kernel test robot wrote:
> Hi Willy,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on net/master]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Willy-Tarreau/insufficient-TCP-source-port-randomness/20220427-145651
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git 71cffebf6358a7f5031f5b208bbdc1cb4db6e539
> config: i386-randconfig-r026-20220425 (https://download.01.org/0day-ci/archive/20220427/202204271705.VrWNPv7n-lkp@intel.com/config)
> compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
> reproduce (this is a W=1 build):
>         # https://github.com/intel-lab-lkp/linux/commit/01b26e522b598adf346b809075880feab3dcdc08
>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>         git fetch --no-tags linux-review Willy-Tarreau/insufficient-TCP-source-port-randomness/20220427-145651
>         git checkout 01b26e522b598adf346b809075880feab3dcdc08
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All errors (new ones prefixed by >>):
> 
>    ld: net/ipv4/inet_hashtables.o: in function `__inet_hash_connect':
> >> inet_hashtables.c:(.text+0x187d): undefined reference to `__umoddi3'

Argh! indeed, we spoke about using div_u64_rem() at the beginning and
that one vanished over time. Will respin it.

Thanks,
Willy

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