Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Subject: Re: [PATCH resend] x86/purgatory: Make sure we fail the build if
 purgatory.ro has missing symbols
To:     kbuild test robot <lkp@intel.com>
Cc:     kbuild-all@lists.01.org, Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H . Peter Anvin" <hpa@zytor.com>, x86@kernel.org,
        linux-kernel@vger.kernel.org
References: <20200221165941.508653-1-hdegoede@redhat.com>
 <202003010150.eyjF3gp0%lkp@intel.com>
From:   Hans de Goede <hdegoede@redhat.com>
Message-ID: <b9a34773-ab38-a3c7-3e35-7da95dc625f4@redhat.com>
Date:   Sat, 29 Feb 2020 19:12:57 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.5.0
MIME-Version: 1.0
In-Reply-To: <202003010150.eyjF3gp0%lkp@intel.com>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Hi,

On 2/29/20 6:16 PM, kbuild test robot wrote:
> Hi Hans,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on tip/x86/core]
> [also build test ERROR on v5.6-rc3 next-20200228]
> [cannot apply to tip/auto-latest]
> [if your patch is applied to the wrong git tree, please drop us a note to help
> improve the system. BTW, we also suggest to use '--base' option to specify the
> base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
> 
> url:    https://github.com/0day-ci/linux/commits/Hans-de-Goede/x86-purgatory-Make-sure-we-fail-the-build-if-purgatory-ro-has-missing-symbols/20200223-040035
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 248ed51048c40d36728e70914e38bffd7821da57
> config: x86_64-randconfig-s1-20200229 (attached as .config)
> compiler: gcc-4.9 (Debian 4.9.2-10+deb8u1) 4.9.2
> reproduce:
>          # save the attached .config to linux build tree
>          make ARCH=x86_64
> 
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@intel.com>
> 
> All errors (new ones prefixed by >>):
> 
>     ld: arch/x86/purgatory/purgatory.ro: in function `kstrtoull':
>>> (.text+0x2b0e): undefined reference to `ftrace_likely_update'

AFAICT this is the patch working as intended and pointing out an actual issue
with the purgatory code. Which shows that we really should get this
patch merged...

Regards,

Hans