Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753362Ab0FHFsL (ORCPT ); Tue, 8 Jun 2010 01:48:11 -0400 Received: from mail-pv0-f174.google.com ([74.125.83.174]:35943 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751958Ab0FHFsK (ORCPT ); Tue, 8 Jun 2010 01:48:10 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:content-transfer-encoding :in-reply-to:user-agent; b=V6xeiMpeTHLPc7C15ryBCpC6sOY9/qnUBqcsH1y1tMSd9oZmxsncD2o2cJmQlA2HLf QyDeCPSGfWsvzV0oZvFFitbb3PRGei2v4Y+Z+99aADbL7bguULI9KsKjWrCtyhdIj9lX TTEfSrbC150EC6TcUnPXXiC489oLH82DSpEI8= Date: Tue, 8 Jun 2010 13:51:52 +0800 From: =?utf-8?Q?Am=C3=A9rico?= Wang To: Alan Cc: Michal Marek , =?utf-8?Q?Am=C3=A9rico?= Wang , linux-kernel@vger.kernel.org Subject: Re: Additional info on modpost segfault Message-ID: <20100608055152.GA7110@cr0.nay.redhat.com> References: <20100604045118.GC5167@cr0.nay.redhat.com> <4C08A9D0.8000505@suse.cz> <1275929979.2923.0.camel@zowie.clueserver.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1275929979.2923.0.camel@zowie.clueserver.org> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1985 Lines: 59 On Mon, Jun 07, 2010 at 09:59:39AM -0700, Alan wrote: >On Fri, 2010-06-04 at 09:22 +0200, Michal Marek wrote: >> On 4.6.2010 06:51, Américo Wang wrote: >> > On Thu, Jun 03, 2010 at 08:10:30PM -0700, alan wrote: >> >> Missed adding the actual segfault message: >> >> >> >> LD drivers/usb/built-in.o >> >> LD drivers/built-in.o >> >> LD vmlinux.o >> >> MODPOST vmlinux.o >> >> /bin/sh: line 1: 20665 Segmentation fault (core dumped) >> >> scripts/mod/modpost -o >> >> /home/alan/GitTrees/linux-2.6-mid-ref/Module.symvers -S vmlinux.o >> >> make[1]: *** [vmlinux.o] Error 139 >> >> make: *** [vmlinux.o] Error 2 >> >> >> >> I have looked at the gcc 4.4.4 changelog and I can't see anything >> >> that should cause this. >> >> >> > >> > Hmm, you need to find which program segfaults here. >> >> It's the modpost command run on vmlinux.o. Alan, can you try >> $ gdb --args scripts/mod/modpost -o Module.symvers -S vmlinux.o >> (gdb) r >> (wait for the segfault) >> (gdb) bt full >> >> and post the backtrace? > >Don't know if this will help much. > >This GDB was configured as "x86_64-redhat-linux-gnu". >For bug reporting instructions, please see: >... >Reading symbols >from /home/alan/GitTrees/linux-2.6-mid-ref/scripts/mod/modpost...(no >debugging symbols found)...done. >(gdb) r >Starting >program: /home/alan/GitTrees/linux-2.6-mid-ref/scripts/mod/modpost -o >Module.symvers -S vmlinux.o > >Program received signal SIGSEGV, Segmentation fault. >0x0000000000403711 in main () >(gdb) bt full >#0 0x0000000000403711 in main () >No symbol table info available. > >Trying to get it to compile with debugging info. > Try to append "-g" to HOSTCFLAGS in the top Makefile. ;) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/