From owner-freebsd-current@freebsd.org Fri May 5 23:52:50 2017 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D7E25D5F786 for ; Fri, 5 May 2017 23:52:50 +0000 (UTC) (envelope-from yaneurabeya@gmail.com) Received: from mail-qt0-x22a.google.com (mail-qt0-x22a.google.com [IPv6:2607:f8b0:400d:c0d::22a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 8DB3219BE; Fri, 5 May 2017 23:52:50 +0000 (UTC) (envelope-from yaneurabeya@gmail.com) Received: by mail-qt0-x22a.google.com with SMTP id t26so1510143qtg.0; Fri, 05 May 2017 16:52:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=lVtndwq5m2gOxafYx0djncEplBCyOEm1F65sIkaYL9o=; b=vP3sX74n6kZflLfRwrrELYNyPItI2j3f0qJx3jc8fawJtxbmAlywlAsVZvKSSyd4u2 mSZoBrQ+HkQkD2Xtnz4zbJBJOlJzY5iRx4Ht15O9aCxQ/zChq+tNMNZojzLO0sQ2/HcY JrbUdX3JlzUaAqWtcetMbEc1V5MNIxY8fmx/ZcOBTuJ0U/uMF1G18EU4wJ5hx7vfhzr9 a85L/5RGYsxSq9SzJSHTBbDSWiNm5R7PBSyfcR4hFDY9rcFhRawe4YRMJspo1lLSrbdB WxQAnDY+qZ0cj70SMWe8Y2OT0nSzMBS8GpFJ+UgGc3E47g9KpoB8wKPT7pgHD1EzF4eM 2FAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=lVtndwq5m2gOxafYx0djncEplBCyOEm1F65sIkaYL9o=; b=rb3O+Kv1zCQOr65r6nPoTrCwXz4YjAWMJro7c9+G59/N36iYcvWd8EzJ90bh5WU2sa Vf/vsAAneC2IVQ88MTx9D3xgolKjzSnX1RYxYE1dHY5oleSSnF0O8qQtwEkV/FQRPFtv bUuRttkF/s4EqjrUj3Bmd+QPf0y3h+Unz+0Ab4AF8/1yW24LtZFq3PHlsKA23S3lGim/ Xr96I+QKZUSPLRXnXu1pyxAqUdxFL7OgNZnUr5jHn07mRPNRrAc9zqldlTfbS67Gzql1 tdsZS7ihxH8/0wkBJ7TmX76q3SzlFgnKwjHEk8MT8iU3G0qnc1f5RsN6e/lImWGn62rp u3AA== X-Gm-Message-State: AODbwcCd2Nx7KyNaYs1QFPfup0E4oETUcvlIML4wKvvHuGVJgb45vLHT 6h0pH8QYQW1/Sh5hhlnUS0+m9oaDRw== X-Received: by 10.200.38.251 with SMTP id 56mr5100140qtp.244.1494028369536; Fri, 05 May 2017 16:52:49 -0700 (PDT) MIME-Version: 1.0 Received: by 10.140.93.48 with HTTP; Fri, 5 May 2017 16:52:48 -0700 (PDT) In-Reply-To: <201705052343.v45Nhsxq082981@slippy.cwsent.com> References: <201705052343.v45Nhsxq082981@slippy.cwsent.com> From: Ngie Cooper Date: Fri, 5 May 2017 16:52:48 -0700 Message-ID: Subject: Re: make buildworld broken at r317821 (libsysdecode) To: Cy Schubert Cc: Andrey Fesenko , Kyle Evans , Alastair Hogge , Vladimir Zakharov , Ed Maste , freebsd-current , Dimitry Andric Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 May 2017 23:52:50 -0000 On Fri, May 5, 2017 at 4:43 PM, Cy Schubert wrote: ... > You have a bad DIMM. I had this same problem on my laptop but not on my > servers downstairs. That suggested that since all four machines were > running the same software the difference between them was hardware. > Replacing the memory in my laptop made this problem go away. > > I have a question for you. Do you use ZFS? ZFS exercises memory quite > aggressively. I also had this problem when I replaced my UFS filesystems > with ZFS on my testbed many moons ago. It even suffered random kernel > panics. Here again, replacing the memory resolved the issue. We need more information first before saying "bad hardware" -- in particular, was the machine overtaxed, were the input files proper, etc? I'm asking because clang has a number of bugs in bugzilla where the host ran out of memory trying to compile things and clang didn't fail gracefully when allocating memory, handling inputs, etc. Thanks, -Ngie