From owner-freebsd-current@FreeBSD.ORG Tue Jun 3 09:17:01 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1031937B401 for ; Tue, 3 Jun 2003 09:17:01 -0700 (PDT) Received: from gravy.homeunix.net (pool-151-197-48-53.phil.east.verizon.net [151.197.48.53]) by mx1.FreeBSD.org (Postfix) with ESMTP id F355443F93 for ; Tue, 3 Jun 2003 09:16:59 -0700 (PDT) (envelope-from bleez@verizon.net) Received: from gravy.homeunix.net (gravy.homeunix.net [192.168.1.2]) by gravy.homeunix.net (8.12.9/8.12.9) with ESMTP id h53GGuGK000699; Tue, 3 Jun 2003 12:16:56 -0400 (EDT) (envelope-from bleez@verizon.net) Date: Tue, 3 Jun 2003 12:16:56 -0400 (EDT) From: Bryan Liesner To: Jeff Roberson In-Reply-To: <20030602230746.U69975-100000@mail.chesapeake.net> Message-ID: <20030603115912.Q648@gravy.homeunix.net> References: <20030602230746.U69975-100000@mail.chesapeake.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: current@freebsd.org Subject: Re: umtx/libthr SMP fixes. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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, 03 Jun 2003 16:17:01 -0000 On Mon, 2 Jun 2003, Jeff Roberson wrote: > If you have had issues with libthr on SMP or umtx panics, the following > patch may solve these issues. > > http://www.chesapeake.net/~jroberson/umtxlocks.diff > > This patch fixes several race conditions and other issues with umtx. Actually, no it doesn't. I was able to use kern_umtx v 1.3 only if I removed atapicam from my kernel config. These patches (now committed?) panic the system whether I use atapicam or not. With kern_umtx v1.2 there is no panic at all, with or without atapicam. Actually, I think it's cam in general that's causing the panic with these changes. Please see kern/52718