From owner-freebsd-current@FreeBSD.ORG Thu Mar 1 09:36:14 2007 Return-Path: X-Original-To: current@FreeBSD.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 0526116A401; Thu, 1 Mar 2007 09:36:14 +0000 (UTC) (envelope-from scottro@nyc.rr.com) Received: from ms-smtp-01.rdc-nyc.rr.com (ms-smtp-01.rdc-nyc.rr.com [24.29.109.5]) by mx1.freebsd.org (Postfix) with ESMTP id 9A83B13C461; Thu, 1 Mar 2007 09:36:13 +0000 (UTC) (envelope-from scottro@nyc.rr.com) Received: from localhost (cpe-69-203-84-92.nyc.res.rr.com [69.203.84.92]) by ms-smtp-01.rdc-nyc.rr.com (8.13.6/8.13.6) with ESMTP id l219aAPW025931; Thu, 1 Mar 2007 04:36:11 -0500 (EST) Date: Thu, 1 Mar 2007 04:36:10 -0500 From: Scott Robbins To: Robert Watson Message-ID: <20070301093610.GA20390@mail.scottro.net> Mail-Followup-To: Robert Watson , Randall Stewart , brooks@freebsd.org, "Stephane E. Potvin" , current@freebsd.org References: <20070226204916.C56223@fledge.watson.org> <45E5D589.3080202@FreeBSD.org> <20070228234754.Q13593@fledge.watson.org> <45E6178F.8040302@cisco.com> <20070301031907.GD94643@mail.scottro.net> <20070301090434.S13593@fledge.watson.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="45Z9DzgjV8m4Oswq" Content-Disposition: inline In-Reply-To: <20070301090434.S13593@fledge.watson.org> User-Agent: mutt-ng/devel-r804 (FreeBSD) X-Virus-Scanned: Symantec AntiVirus Scan Engine Cc: Randall Stewart , brooks@FreeBSD.org, "Stephane E. Potvin" , current@FreeBSD.org Subject: Re: HEADS UP: UNIX domain socket locking changes merged to CVS HEAD 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: Thu, 01 Mar 2007 09:36:14 -0000 --45Z9DzgjV8m4Oswq Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Mar 01, 2007 at 09:11:15AM +0000, Robert Watson wrote: >=20 > On Wed, 28 Feb 2007, Scott Robbins wrote: >=20 > > > >I too have been having unexpected lockups--like Randall, I figured it wa= s=20 > >something to do with my machine. Interestingly enough, though X will lo= ck up=20 > >completely (and I can't ssh to the machine, though I can ping it) the ja= il,=20 > >which runs a small web site, running on an alias ip address continues to= =20 > >work--I can still access the web site from outside. > > >=20 > Give uipc_usrreq.c:1.199 a try and see if it helps. As posted earlier, I just finished a build with it, but won't be able to give a definite answer till tonight.=20 >=20 > On the web server/jail vs X11 thing: yes -- deadlocks involving lock orde= r=20 > reversals typically affect two classes of threads. The first is threads = that=20 > are directly involved in the deadlock (the two reverse lock acquisitions)= , and=20 > the second class is threads that end up waiting on any locks (or other=20 > resources) held by the threads in the deadly embrace. >=20 > X11/Gnome, and possibly UNIX domain sockets generally, will do alright. = =20 > However, I would think that new SSH sessions into the jail might also han= g=20 > since they will try to open new syslog sessions, which requires a UNIX do= main=20 > socket connect operation. =20 That turned out to be correct. I couldn't ssh into the jail either, only the web server continued working.=20 Thank you again for your quick response to the problem, and hopefully we'll be able to report success by this evening. --=20 Scott Robbins PGP keyID EB3467D6 ( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 ) gpg --keyserver pgp.mit.edu --recv-keys EB3467D6 Xander: You were looking at my neck.=20 Angel: What?=20 Xander: You were checking out my neck, I saw that.=20 Angel: No, I wasn't.=20 Xander: Just keep your distance, pal.=20 Angel: I wasn't looking at your neck.=20 Xander: I told you to eat before we left. --45Z9DzgjV8m4Oswq Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFF5p6K+lTVdes0Z9YRAivDAKC7aD7IKGgUiJyYrZIkpEAufWv42ACfYGSF TqxN5BEwtVQBbeIAWoI1Kls= =+OMm -----END PGP SIGNATURE----- --45Z9DzgjV8m4Oswq--