From owner-freebsd-toolchain@FreeBSD.ORG Fri Feb 28 15:43:35 2014 Return-Path: Delivered-To: freebsd-toolchain@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4AEDA58F; Fri, 28 Feb 2014 15:43:35 +0000 (UTC) Received: from smtpout6.timeweb.ru (smtpout6.timeweb.ru [92.53.117.39]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id F36CD18B7; Fri, 28 Feb 2014 15:43:34 +0000 (UTC) Received: from [213.148.20.85] (helo=hive.panopticon) by smtp.timeweb.ru with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1WJPb0-0007NP-5F; Fri, 28 Feb 2014 19:43:30 +0400 Received: from hades.panopticon (hades.panopticon [192.168.0.32]) by hive.panopticon (Postfix) with ESMTP id BEFE381B; Fri, 28 Feb 2014 19:43:29 +0400 (MSK) Received: by hades.panopticon (Postfix, from userid 1000) id 8259B2B36; Fri, 28 Feb 2014 19:43:28 +0400 (MSK) Date: Fri, 28 Feb 2014 19:43:28 +0400 From: Dmitry Marakasov To: Dimitry Andric Subject: Re: clang (both 3.3 and 3.4) OOM crashes on HEAD Message-ID: <20140228154328.GA13454@hades.panopticon> References: <20140228143606.GD29171@hades.panopticon> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.22 (2013-10-16) Cc: freebsd-toolchain@freebsd.org X-BeenThere: freebsd-toolchain@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Maintenance of FreeBSD's integrated toolchain List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Feb 2014 15:43:35 -0000 * Dimitry Andric (dim@FreeBSD.org) wrote: > > I've been getting some failure mails from pkg building cluster related > > to clang crashes: > > > > http://beefy2.isc.freebsd.org/bulk/head-amd64-default/2014-02-28_01h43m56s/logs/arx-libertatis-1.0.3_2.log > > http://beefy1.isc.freebsd.org/bulk/head-i386-default/2014-02-21_03h01m36s/logs/supertuxkart-0.8.1.log > > > > At first I thought they'll go away with clang 3.4, but recently I've > > added HEAD jail to my tinderbox and reproduced these. Also a reason > > of crashes become apparent: c++ eats all available memoty (15G RSS > > in my case). > > > > I though of investigating these further, but wanted to check if it's > > already known first. > > There are a few known OOM bugs in 3.4, but from the logs it is not > immediately apparent if you are hitting those, or if they are new bugs. Note that it affects both 3.3 and 3.4. I think it was triggered by something unrelated to clang update, maybe libc++ update. > To be able to figure that out, we need the files mentioned in clang's > diagnostic messages, e.g. for arx-libertatis: > > /tmp/Input-XkKTNq.cpp > /tmp/Input-XkKTNq.sh Here's one from arx-libertatis: http://people.freebsd.org/~amdmi3/clang-eats-mem-bug.tar.bz2 The bug is reproducible on my 10.x with both system clang 3.3 (after removing -vectorize-loops -vectorize-slp options) and with clang 3.4 from ports. -- Dmitry Marakasov . 55B5 0596 FF1E 8D84 5F56 9510 D35A 80DD F9D2 F77D amdmi3@amdmi3.ru ..: jabber: amdmi3@jabber.ru http://www.amdmi3.ru