Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752536Ab0FGQ7m (ORCPT ); Mon, 7 Jun 2010 12:59:42 -0400 Received: from clueserver.org ([65.102.45.174]:45202 "EHLO clueserver.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752077Ab0FGQ7k (ORCPT ); Mon, 7 Jun 2010 12:59:40 -0400 Subject: Re: Additional info on modpost segfault From: Alan To: Michal Marek Cc: =?ISO-8859-1?Q?Am=E9rico?= Wang , linux-kernel@vger.kernel.org In-Reply-To: <4C08A9D0.8000505@suse.cz> References: <20100604045118.GC5167@cr0.nay.redhat.com> <4C08A9D0.8000505@suse.cz> Content-Type: text/plain; charset="UTF-8" Date: Mon, 07 Jun 2010 09:59:39 -0700 Message-ID: <1275929979.2923.0.camel@zowie.clueserver.org> Mime-Version: 1.0 X-Mailer: Evolution 2.30.1.2 (2.30.1.2-6.fc13) Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1824 Lines: 57 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. -- 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/