From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750725AbXAEV2x (ORCPT ); Fri, 5 Jan 2007 16:28:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750729AbXAEV2x (ORCPT ); Fri, 5 Jan 2007 16:28:53 -0500 Received: from wx-out-0506.google.com ([66.249.82.238]:30582 "EHLO wx-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750725AbXAEV2w (ORCPT ); Fri, 5 Jan 2007 16:28:52 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=otC72rPiE8S0wCZ9ls/ayU2pemItk6zDuEqLFQGE33eKVvMdIVbI3Qcr4PHwFNgkLcHFnupRMK0CFEX4F5VDOxROFcPMn4h6mBzZazYsbbeCzHZVf7/NX0J8iOnKkJJzYBgc262876eYqNjeGGrEgt6e7Xiw2Svzre9tBXSAB40= Message-ID: <5a4c581d0701051328i49fb13ffse15c41b6531dfd71@mail.gmail.com> Date: Fri, 5 Jan 2007 22:28:52 +0100 From: "Alessandro Suardi" To: gorcunov@gmail.com Subject: Re: qconf: reproducible segfault Cc: "kernel list" In-Reply-To: <200701051022.59914.gorcunov@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <459C1966.7040209@xs4all.nl> <200701041242.31508.gorcunov@gmail.com> <5a4c581d0701041316w83d1564rac875a1d4e0ef87a@mail.gmail.com> <200701051022.59914.gorcunov@gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 1/5/07, Cyrill V. Gorcunov wrote: > On Friday 05 January 2007 00:16, you wrote: > | On 1/4/07, Cyrill V. Gorcunov wrote: > | > Hi, > | > there is SIGSEGV happens in qconf.cc:995 > | > > | > str += print_filter(sym->name); > | > > | > but sym points to 0x1. To reproduce the error just do: > | > > | > 1) make xconfig (with Options->Show Debug Info unchecked) > | > 2) go to Networking->Networking Options->Network packet filtering framework (Netfilter)-> > | > Network packet filtering framework (Netfilter) and the line "<| .." must be selected > | > then just turn on Options->Show Debug info menu and you'll get: > | > > | > make[1]: *** [xconfig] Segmentation fault > | > make: *** [xconfig] Error 2 > | > | Cyrill, Randy - I feel like an idiot but I can't really reproduce this :( > | > | I'm trimming lkml from the CC list to upload and attach two screenshots > | where I enabled Show Debug Info at what I guess are the two possible > | interpretations of where the Select highlight should be - and neither > | cause a core dump for me. > | > | What am I mistaking ? > | > | Thanks, ciao, > Hi Alessandro, > > see enveloped scrshot to keep in mind how the qconf is looking at moment we > get SYGSEGV error - you just need to set Options->Show Debug and oops ;) > I don't know may be QT dev version does handling such exceptions itself and if > SYGSEVG happens it just ignore it... But the qconf really have the error :(. That's ok, apparently FC6's qt-devel-3.3.7 libs are capable of handling the problem (I can bring qconf to the exact screen you showed, Options->Show Debug Info does _not_ crash). And of course it's better to fix the problem in qconf.cc rather than letting qt libs handle it :) Thanks, --alessandro "but I thought that I should let you know the things that I don't always show might not be worth the time it took" (Steve Wynn, 'If My Life Was An Open Book')