Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752111AbaGZSjR (ORCPT ); Sat, 26 Jul 2014 14:39:17 -0400 Received: from mail-vc0-f171.google.com ([209.85.220.171]:54983 "EHLO mail-vc0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751448AbaGZSjP (ORCPT ); Sat, 26 Jul 2014 14:39:15 -0400 MIME-Version: 1.0 In-Reply-To: References: <20140723182518.GD3935@laptop> <20140723184111.GG3935@laptop> <20140723190230.GH3935@laptop> <53D064C7.5050807@daenzer.net> <53D1B1EF.7030603@daenzer.net> <20140725035527.GA30108@pg-vmw-gw1> <20140725140237.GB32669@home.goodmis.org> Date: Sat, 26 Jul 2014 11:39:14 -0700 X-Google-Sender-Auth: -tbSH5ae1tnnYlb_BcOwdVkzd1w Message-ID: Subject: Re: Random panic in load_balance() with 3.16-rc From: Linus Torvalds To: Steven Rostedt Cc: Alexei Starovoitov , =?UTF-8?Q?Michel_D=C3=A4nzer?= , Jakub Jelinek , Linux Kernel Mailing List , Debian GCC Maintainers , Debian Kernel Team Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jul 26, 2014 at 11:28 AM, Linus Torvalds wrote: > > That's a bit worrisome. I haven't actually checked if the code > generation differs in significant ways yet.. Nope. Just three instructions that got re-ordered from ABC to CAB in a way that makes no difference. But just the knowledge that "-g" affects code generation is nasty. And with "allmodconfig" my build fails almost immediately (failures on at least arch/x86/kernel/process_64.c, kernel/exit.c and mm/vmalloc.c in that case. I was too lazy to check what the differences were). Does anybody have current gcc build and can verify that current gcc tip passes the kernel compile with that export GCC_COMPARE_DEBUG=1 thing? Linus -- 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/