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[209.85.220.65]) by mx.google.com with SMTPS id v126sor9422679oie.101.2019.02.28.15.56.09 for (Google Transport Security); Thu, 28 Feb 2019 15:56:09 -0800 (PST) Received-SPF: pass (google.com: domain of dan.j.williams@intel.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@intel-com.20150623.gappssmtp.com header.s=20150623 header.b=EGCp7Q7n; spf=pass (google.com: domain of dan.j.williams@intel.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=dan.j.williams@intel.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=intel-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=uERLKdxddlDUmJblszVciWCaFSRB2PW3RWK+BP8ZSsU=; b=EGCp7Q7n1qKJ1I8XM59ZgdiZ69fefYWbcALHIz/rmNAz1BI1AtFlaoRcHCO1OuhArI UbO5IVqSohO/zBsgYoWyvgKMw3ZD4WLR5D9lnsoRLYkZvj/IQ8+zrwCXpRSR6cqzNNfK yr3tm0bDnvjELQyA7bh0juxUwbvGhmYRFUPL89npUioIQld1mxpqk7aaUCbpmmrZyyIy b0be3jXU+MUt/oeqB8UziuWx5ZMyp52bUeNpb9ExF1fVXNdaEf/O90hSEwWfFmTbkJSM odWuNpcEwU6dIpsOMn8nqqxlSEByu1Si8rd2k4DYlA156WmD0D41zpEsIpeU+5NdluUs tLvA== X-Google-Smtp-Source: AHgI3IYwCchoLH3Wwe6rNTWF9xU4YpN1DXRKUzvI+0jK+ayx/oEgCTjUfXt4uS7RGHmAP07O3BqHkKJqrIPkyu8JL2M= X-Received: by 2002:aca:3906:: with SMTP id g6mr1575935oia.149.1551398168978; Thu, 28 Feb 2019 15:56:08 -0800 (PST) MIME-Version: 1.0 References: <5c6702da.1c69fb81.12a14.4ece@mx.google.com> <20190215104325.039dbbd9c3bfb35b95f9247b@linux-foundation.org> <20190215185151.GG7897@sirena.org.uk> <20190226155948.299aa894a5576e61dda3e5aa@linux-foundation.org> <20190228151438.fc44921e66f2f5d393c8d7b4@linux-foundation.org> In-Reply-To: <20190228151438.fc44921e66f2f5d393c8d7b4@linux-foundation.org> From: Dan Williams Date: Thu, 28 Feb 2019 15:55:57 -0800 Message-ID: Subject: Re: next/master boot bisection: next-20190215 on beaglebone-black To: Andrew Morton Cc: Mark Brown , "kernelci.org bot" , Tomeu Vizoso , guillaume.tucker@collabora.com, Matt Hart , Stephen Rothwell , khilman@baylibre.com, enric.balletbo@collabora.com, Nicholas Piggin , Dominik Brodowski , Masahiro Yamada , Kees Cook , Adrian Reber , Linux Kernel Mailing List , Johannes Weiner , Linux MM , Mathieu Desnoyers , Michal Hocko , Richard Guy Briggs , "Peter Zijlstra (Intel)" , info@kernelci.org 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 Thu, Feb 28, 2019 at 3:14 PM Andrew Morton wrote: > > On Tue, 26 Feb 2019 16:04:04 -0800 Dan Williams wrote: > > > On Tue, Feb 26, 2019 at 4:00 PM Andrew Morton wrote: > > > > > > On Fri, 15 Feb 2019 18:51:51 +0000 Mark Brown wrote: > > > > > > > On Fri, Feb 15, 2019 at 10:43:25AM -0800, Andrew Morton wrote: > > > > > On Fri, 15 Feb 2019 10:20:10 -0800 (PST) "kernelci.org bot" wrote: > > > > > > > > > > Details: https://kernelci.org/boot/id/5c666ea959b514b017fe6017 > > > > > > Plain log: https://storage.kernelci.org//next/master/next-20190215/arm/multi_v7_defconfig+CONFIG_SMP=n/gcc-7/lab-collabora/boot-am335x-boneblack.txt > > > > > > HTML log: https://storage.kernelci.org//next/master/next-20190215/arm/multi_v7_defconfig+CONFIG_SMP=n/gcc-7/lab-collabora/boot-am335x-boneblack.html > > > > > > > > > Thanks. > > > > > > > > > But what actually went wrong? Kernel doesn't boot? > > > > > > > > The linked logs show the kernel dying early in boot before the console > > > > comes up so yeah. There should be kernel output at the bottom of the > > > > logs. > > > > > > I assume Dan is distracted - I'll keep this patchset on hold until we > > > can get to the bottom of this. > > > > Michal had asked if the free space accounting fix up addressed this > > boot regression? I was awaiting word on that. > > hm, does bot@kernelci.org actually read emails? Let's try info@ as well.. Thanks, yes. The logs don't give much to go on, so I can only iterate on this as fast as I can drum up feedback. > > Is it possible to determine whether this regression is still present in > current linux-next? > > > I assume you're not willing to entertain a "depends > > NOT_THIS_ARM_BOARD" hack in the meantime? > > We'd probably never be able to remove it. And we don't know whether > other systems might be affected. Right, and agree. I was just grasping at straws because I know of users that want to take advantage of this and was lamenting the upcoming apology tour saying, "sorry, maybe v5.2". I had always expected that platforms outside of x86-servers would need to do their own validation / evaluation before recommending this, and the regression concern is why it defaulted to disabled... but boot regressions are boot regressions.