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b=E36+TvcNN3NIJeM5crOgJkH0f6cMwNGvgheTm9IsQYiTTspJzzo9y4W7/iRLX2gkJ LeDP+u3Fger1rdyxgA+iPB15PHH4jI211/GKltEBqDVD84XHc1pb0gViBxAnDpgwd1 iNiigvFZi5Uuw/6wX7dzpY6E8almLmxQFiyoZjJ4WB9FgrO9BgvAYBBHd0qAcasDP8 +s9R0uK7MD+YmvSj5TWO6Jwx+zP6Gso03BB/gVLi7aceTIGZzKSqkIZrEFOtdfznra AycdZtptf5sDCQs/V9EjHq9B5aZkETF0rnHlwAQJ+w/blJJ8OR7yiFfzHO2t4IUyxH 73ZaPNzvCdqag== Date: Wed, 26 Jun 2024 10:00:23 -0700 From: Nathan Chancellor To: Naresh Kamboju Cc: open list , linux-mm , lkft-triage@lists.linaro.org, clang-built-linux , Andrew Morton , Arnd Bergmann , Lance Yang Subject: Re: mm: huge_memory.c:2736:31: error: variable 'page' is uninitialized when used here [-Werror,-Wuninitialized] Message-ID: <20240626170023.GA65296@fedora-macbook-air-m2> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 0417F120021 X-Stat-Signature: qyk1xqfo8te9abkpzjkx8mcrc1y6qzb9 X-Rspam-User: X-HE-Tag: 1719421230-309821 X-HE-Meta: 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 +cPPWWmG Jd+OdgMZz9QsxFuIP3st7jBXvWuMolHOmamBx9oNrk8KXhREPe7qpwPFOmT9CZL72MPiY44im2omMZhdP5sQeMVS33tyCYf1U4n9tthqCIi+kf+9C7bTLH1uvAyMD1uZLR1I3cCxf7Qstv2WlSI/XCnLzL/ASXqQWcyT6gmTe+joheqNLZacgXjzsZMoqa7niboyZPYqfqFXLegDlNzAIr4ju1NCVdK/v5E0uo5s8mdydwhG6EjlcEpx0VFtLr7Q3BpB8zMNc7eptLuTqNU3POL2A7GNNuj67ecsLQcgJksU+/iyDOqQ32LfFGJHBtufugYdHZoCysur1wPGoQe/X1qUf9lCjRzBxfx3sttv4scjND99LYc+aIzH4ldyFAIRjtfWcrnXHmTsaauVuzNaJ1eBJvg== 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: List-Subscribe: List-Unsubscribe: Hi Naresh, On Wed, Jun 26, 2024 at 10:14:56PM +0530, Naresh Kamboju wrote: > The x86_64 clang builds failed on Linux next due to these warnings / errors. > > Reported-by: Linux Kernel Functional Testing > > Build error: > ------ > mm/huge_memory.c:2736:31: error: variable 'page' is uninitialized when > used here [-Werror,-Wuninitialized] > 2736 | folio_remove_rmap_pmd(folio, page, vma); > | ^~~~ > /builds/linux/mm/huge_memory.c:2700:19: note: initialize the variable > 'page' to silence this warning > 2700 | struct page *page; > | ^ > | = NULL > 1 error generated. > > patch that is causing this build failures, > mm/vmscan: avoid split lazyfree THP during shrink_folio_list() Thanks for the report. It looks like Andrew addressed this in mm-unstable based on an earlier report (although that change might need some more polish ;) https://lore.kernel.org/202406260514.SLhNM9kQ-lkp@intel.com/ https://git.kernel.org/akpm/mm/c/199e6c3bd568657e85ead22d6f41c46e74ad9a75 Cheers, Nathan