From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965032AbXAKELL (ORCPT ); Wed, 10 Jan 2007 23:11:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965062AbXAKELL (ORCPT ); Wed, 10 Jan 2007 23:11:11 -0500 Received: from secure.tummy.com ([66.35.36.132]:34430 "EHLO secure.tummy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965032AbXAKELK (ORCPT ); Wed, 10 Jan 2007 23:11:10 -0500 Date: Wed, 10 Jan 2007 21:09:17 -0700 From: Sean Reifschneider To: Neil Brown Cc: Andi Kleen , linux-kernel@vger.kernel.org Subject: Re: PATCH - x86-64 signed-compare bug, was Re: select() setting ERESTARTNOHAND (514). Message-ID: <20070111040917.GO7121@tummy.com> References: <20070110234238.GB10791@tummy.com> <17829.34481.340913.519675@notabene.brown> <200701110140.51842.ak@suse.de> <17829.36029.240912.274302@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <17829.36029.240912.274302@notabene.brown> User-Agent: Mutt/1.4.2.2i X-Hashcash: 1:26:070111:linux-kernel@vger.kernel.org::6D9GnPQjYIHwdRNh:000000000 000000000000000000000005DIGp Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 11, 2007 at 12:02:53PM +1100, Neil Brown wrote: >On Thursday January 11, ak@suse.de wrote: >> Normally it should be only visible in strace. Did you see it without >> strace? > >No, only in strace. I am absolutely seeing it outside of strace. It is showing up as an errno to the select call: if (select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &t) != 0) { if (errno != EINTR) { PyErr_SetFromErrno(PyExc_IOError); return -1; } This code is seeing errno=514. >> > You don't mention in the Email which kernel version you use but I see >> > from the web page you reference it is 2.6.19.1. I'm using The production system is running CentOS 4.4, 2.6.9 kernel. However, it looks to be the same issue all the way up to 2.6.19.1, and google shows reports of it on 2.6.17. Thanks, Sean -- George Washington was first in war, first in peace -- and first to have his birthday juggled to make a long weekend. Sean Reifschneider, Member of Technical Staff tummy.com, ltd. - Linux Consulting since 1995: Ask me about High Availability