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[188.155.177.222]) by smtp.googlemail.com with ESMTPSA id w1sm6464702eds.37.2021.06.18.08.14.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 18 Jun 2021 08:14:27 -0700 (PDT) Subject: Re: [linux-next:master 5946/11253] ld.lld: error: undefined symbol: reset_controller_register To: Thierry Reding Cc: Matthew Wilcox , 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> <6188a28e-8184-fbb0-6e49-1c674dbf84a7@kernel.org> From: Krzysztof Kozlowski Message-ID: <480ae640-631c-d594-e18f-b725b98051b5@kernel.org> Date: Fri, 18 Jun 2021 17:14:27 +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=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit Authentication-Results: imf05.hostedemail.com; dkim=none; spf=pass (imf05.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: DF791E000243 X-Stat-Signature: dqkmxm61z5u3q533w6a4xbkp6chpcdnz X-HE-Tag: 1624029270-817087 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 18/06/2021 17:11, Thierry Reding wrote: > On Fri, Jun 18, 2021 at 05:05:30PM +0200, Krzysztof Kozlowski wrote: >> 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). > > I think you could hit this in legit configurations where people want to > build ARM_SMMU but not TEGRA_MC. So it's either a dependency that we > need or the stubs. But I think you could squash the stub patch that I > sent into your tree if you can rebase that. The patch that the stub > should go into is this: > > 393d66fd2cac ("memory: tegra: Implement SID override programming") > I think you refer here to the probe() stub, but I meant reset controller stubs. These can happen only on COMPILE_TEST && !ARCH_TEGRA && !RESET_CONTROLLER. Best regards, Krzysztof