From owner-freebsd-stable@FreeBSD.ORG Thu Jul 9 20:45:51 2009 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A7667106564A for ; Thu, 9 Jul 2009 20:45:51 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from email2.allantgroup.com (email2.emsphone.com [199.67.51.116]) by mx1.freebsd.org (Postfix) with ESMTP id 5C5BB8FC16 for ; Thu, 9 Jul 2009 20:45:51 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by email2.allantgroup.com (8.14.0/8.14.0) with ESMTP id n69KGhFB052976 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 9 Jul 2009 15:16:43 -0500 (CDT) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (smmsp@localhost [127.0.0.1]) by dan.emsphone.com (8.14.3/8.14.3) with ESMTP id n69KGhwC098711 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 9 Jul 2009 15:16:43 -0500 (CDT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.14.3/8.14.3/Submit) id n69K1pxp064112; Thu, 9 Jul 2009 15:01:51 -0500 (CDT) (envelope-from dan) Date: Thu, 9 Jul 2009 15:01:50 -0500 From: Dan Nelson To: "Mikhail T." Message-ID: <20090709200148.GD63413@dan.emsphone.com> References: <4A563FF2.3010305@aldan.algebra.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4A563FF2.3010305@aldan.algebra.com> X-OS: FreeBSD 7.2-STABLE User-Agent: Mutt/1.5.19 (2009-01-05) X-Virus-Scanned: ClamAV version 0.94.2, clamav-milter version 0.94.2 on email2.allantgroup.com X-Virus-Status: Clean X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0.2 (email2.allantgroup.com [199.67.51.78]); Thu, 09 Jul 2009 15:16:43 -0500 (CDT) X-Scanned-By: MIMEDefang 2.45 Cc: stable@freebsd.org, kde@freebsd.org Subject: Re: process stuck in "umtxn" X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Jul 2009 20:45:52 -0000 In the last episode (Jul 09), Mikhail T. said: > I noticed, that my build of KDE4 ports got suspiciously quiet... Pressing > Ctrl-T shows: > > load: 0.01 cmd: automoc4 78507 [umtxn] 0.00u 0.00s 0% 3552k > > According to gdb, the process' stack is: > > #0 0x0000000800d9620a in __error () from /lib/libthr.so.3 > #1 0x0000000800d95f0c in __error () from /lib/libthr.so.3 > #2 0x0000000800d911eb in pthread_mutex_getyieldloops_np () from /lib/libthr.so.3 > #3 0x0000000800f0941b in _malloc_postfork () from /lib/libc.so.7 > #4 0x0000000800d93c60 in fork () from /lib/libthr.so.3 > #5 0x0000000800778e4a in QProcessPrivate::startProcess () from /opt/lib/qt4/libQtCore.so.4 > #6 0x000000080073f2c6 in QProcess::start () from /opt/lib/qt4/libQtCore.so.4 > .... > > My system is 7.2-PRERELEASE/amd64 from April 9th. Please, advise. > Thanks! Yours, That could be due to the following bug, fixed after 7.2 was released. Appliying the patch and rebuilding libc should be all you need to fix it: http://security.freebsd.org/advisories/FreeBSD-EN-09:04.fork.asc -- Dan Nelson dnelson@allantgroup.com