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[188.155.177.222]) by smtp.googlemail.com with ESMTPSA id dn7sm5875300edb.29.2021.06.18.08.05.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 18 Jun 2021 08:05:31 -0700 (PDT) Subject: Re: [linux-next:master 5946/11253] ld.lld: error: undefined symbol: reset_controller_register To: Matthew Wilcox Cc: Thierry Reding , kernel test robot , Philipp Zabel , Dmitry Osipenko , "kbuild-all@lists.01.org" , "clang-built-linux@googlegroups.com" , Linux Memory Management List References: <202106182243.KgZxMD9A-lkp@intel.com> From: Krzysztof Kozlowski Message-ID: <6188a28e-8184-fbb0-6e49-1c674dbf84a7@kernel.org> Date: Fri, 18 Jun 2021 17:05:30 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Authentication-Results: imf04.hostedemail.com; dkim=none; spf=pass (imf04.hostedemail.com: domain of kkozlowskik@gmail.com designates 209.85.218.48 as permitted sender) smtp.mailfrom=kkozlowskik@gmail.com; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=kernel.org (policy=none) X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 13F74984 X-Stat-Signature: 1hnz3c5zgnny1mub1d7m5g6yc6mwtw44 X-HE-Tag: 1624028734-872343 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000003, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 18/06/2021 17:00, Matthew Wilcox wrote: > On Fri, Jun 18, 2021 at 04:55:23PM +0200, Krzysztof Kozlowski wrote: >> These are randconfigs, so I don't think Linus will hit them when >> merging. Therefore assuming the reset-stubs are applied (and tree is in >> next), we should be fine, shouldn't we? > > It's a bisection hazard. Please fix it before the merge. This is > exactly the kind of thing that linux-next is designed to detect. Still hazard for a compile testing configuration, not a real bisection for troubleshooting bugs. You cannot hit the bug in any real case (so !COMPILE_TEST). The only way to reduce the bisection hazard is me to take reset stubs. Best regards, Krzysztof