From owner-freebsd-current@FreeBSD.ORG Tue Jan 18 14:46:24 2011 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 120D2106564A for ; Tue, 18 Jan 2011 14:46:24 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id 66A468FC13 for ; Tue, 18 Jan 2011 14:46:23 +0000 (UTC) Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id p0IEkEXb070311 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 18 Jan 2011 16:46:14 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4) with ESMTP id p0IEkE8k085804; Tue, 18 Jan 2011 16:46:14 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4/Submit) id p0IEkCHQ085803; Tue, 18 Jan 2011 16:46:12 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Tue, 18 Jan 2011 16:46:12 +0200 From: Kostik Belousov To: Beat G?tzi Message-ID: <20110118144611.GP2518@deviant.kiev.zoral.com.ua> References: <4D35A0BB.3010601@chruetertee.ch> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="tB3UQx9o7itSJcWB" Content-Disposition: inline In-Reply-To: <4D35A0BB.3010601@chruetertee.ch> User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-3.4 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00, DNS_FROM_OPENWHOIS autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: current@freebsd.org Subject: Re: Running linux ldconfig on tmpfs results in unkillable process X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Tue, 18 Jan 2011 14:46:24 -0000 --tB3UQx9o7itSJcWB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 18, 2011 at 03:16:27PM +0100, Beat G?tzi wrote: > Hi, >=20 > I've a tinderbox which uses tmpfs to build ports. Every time I build a > port which executes linux ldconfig it results in an unkillable process > which uses 100% CPU. The problem is reproduceable without tinderbox: >=20 > # uname -a > FreeBSD daedalus.network.local 9.0-CURRENT FreeBSD 9.0-CURRENT #3 > r216761: Tue Dec 28 15:32:26 CET 2010 > root@daedalus.network.local:/usr/obj/usr/src/sys/GENERIC i386 > # mkdir /compat/test > # mount -t tmpfs tmpfs /compat/test > # cp -Rp /compat/linux/* /compat/test/ > # mount -t linprocfs linprocfs /compat/test/proc > # /compat/linux/sbin/ldconfig -r /compat/test/ > # pgrep ldconfig > 3449 > # procstat -i 3449 | grep KILL > 3449 ldconfig KILL --- > # kill -9 3449 > # procstat -i 3449 | grep KILL > 3449 ldconfig KILL P-- >=20 > >From top(1): > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND > 3449 root 1 44 0 992K 712K CPU1 1 10:06 100.00% ldconfig >=20 > When I reboot the machine it hangs after "All buffers synced.". >=20 > I've uploaded some additional output of procstat and ktrace here: > http://people.freebsd.org/~beat/logs/linux-ldconfig-tmpfs.txt >=20 > Anyone knows how to fix this? kdump for the trace of the linux binary is a garbage. You need to use linux_kdump (from ports). I think that your process is looping in the kernel, you can confirm this by dropping in the ddb and doing "bt ". --tB3UQx9o7itSJcWB Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iEYEARECAAYFAk01p7MACgkQC3+MBN1Mb4ibqQCeIWbm3HkyTJzfItl0a8belSq3 yFsAoJbFfZTTdEg1CXOM/FVgNIzaja0h =OVew -----END PGP SIGNATURE----- --tB3UQx9o7itSJcWB--