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[209.85.220.65]) by mx.google.com with SMTPS id l22sor38821875eda.1.2019.07.25.11.33.36 for (Google Transport Security); Thu, 25 Jul 2019 11:33:36 -0700 (PDT) Received-SPF: pass (google.com: domain of matorola@gmail.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=V8onZfDZ; spf=pass (google.com: domain of matorola@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=matorola@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=AuU4nyrEtuT3w9Jo5wyp3Jkj2G36pS00KDYO2VYJxyQ=; b=V8onZfDZKgE1lCY1sJyvGaCLF6wKkftziOVch1g1x7yGvEJx8cQ4qQPLlYVp5WeRwG wuwNzvyBsCghliDlAPtHciGL+inTAtGwkR2FNHtZR7PQJalcCO5AJgEZBpr8l+e3Ro9Q mq8R2UFa5rXD5zFBnsDKGPWpMGskEsNfOCeFaDa3DEReI579ufl0sPtTtrmXnOdPNtq6 ZzBwY4lmd+uULWigAkZnORDpRnZX3+mJ1JOsDmNGsSND4xSuVNLTfFZ31DJaYsPI9MX+ iGO7KZLGipzMomMi1m+KKgSBwAifGOukD+I0Cj67NYopeSi/nJ2TNV04LPOPsff9eIMN pfIg== X-Google-Smtp-Source: APXvYqw6N86vVfRIvU7fAQubRb8w6XpUTYh/1QgHCfg6AtGs50OjwIiv0MuuIZJdRWpqC1GXgwzbAcukhf1vb9fnmIE= X-Received: by 2002:a05:6402:1446:: with SMTP id d6mr79749937edx.37.1564079616259; Thu, 25 Jul 2019 11:33:36 -0700 (PDT) MIME-Version: 1.0 References: <20190717215956.GA30369@altlinux.org> <20190718.141405.1070121094691581998.davem@davemloft.net> <20190724.131324.1545677795217357026.davem@davemloft.net> In-Reply-To: <20190724.131324.1545677795217357026.davem@davemloft.net> From: Anatoly Pugachev Date: Thu, 25 Jul 2019 21:33:24 +0300 Message-ID: Subject: Re: [PATCH 09/16] sparc64: use the generic get_user_pages_fast code To: David Miller Cc: "Dmitry V. Levin" , Christoph Hellwig , khalid.aziz@oracle.com, torvalds@linux-foundation.org, akpm@linux-foundation.org, Sparc kernel list , linux-mm@kvack.org, Linux Kernel list Content-Type: text/plain; charset="UTF-8" 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 Wed, Jul 24, 2019 at 11:13 PM David Miller wrote: > > From: Anatoly Pugachev > Date: Wed, 24 Jul 2019 22:32:17 +0300 > > > the first test where it was discovered was done on my test LDOM named > > ttip, hardware (hypervisor) is T5-2 server, running under Solaris 11.4 > > OS. > > ttip LDOM is debian sparc64 unstable , so with almost all the latest > > software (gcc 8.3.0, binutils 2.32.51.20190707-1, debian GLIBC > > 2.28-10, etc..) > > > > For another test, i also installed LDOM with oracle sparc linux > > https://oss.oracle.com/projects/linux-sparc/ , but I've to install a > > more fresh version of gcc on it first, since system installed gcc 4.4 > > is too old for a git kernel (linux-2.6/Documentation/Changes lists gcc > > 4.6 as a minimal version), so I choose to install gcc-7.4.0 to /opt/ > > (leaving system installed gcc 4.4 under /usr/bin). Compiled and > > installed git kernel version, i.e. last tag 5.3.0-rc1 and ran the > > test. Kernel still produced oops. > > I suspect, therefore, that we have a miscompile. > > Please put your unstripped vmlinux image somewhere so I can take a closer > look. David, http://u164.east.ru/kernel/ there's vmlinuz-5.3.0-rc1 kernel and archive 5.3.0-rc1-modules.tar.gz of /lib/modules/5.3.0-rc1/ this is from oracle sparclinux LDOM , compiled with 7.4.0 gcc Thank you.