Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750864AbWHYHAS (ORCPT ); Fri, 25 Aug 2006 03:00:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751090AbWHYHAS (ORCPT ); Fri, 25 Aug 2006 03:00:18 -0400 Received: from omx2-ext.sgi.com ([192.48.171.19]:53954 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S1751034AbWHYHAQ (ORCPT ); Fri, 25 Aug 2006 03:00:16 -0400 X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.1 From: Keith Owens To: linux-kernel@vger.kernel.org Cc: ak@suse.de Subject: Incorrect alignment assumptions in x86_64 stacktrace Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 25 Aug 2006 16:59:58 +1000 Message-ID: <13065.1156489198@kao2.melbourne.sgi.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 584 Lines: 15 2.6.18-rc4 arch/x86_64/kernel/stacktrace.c::get_stack_end() incorrectly assumes that the irqstackptr is IRQSTACKSIZE aligned. stack_end = (unsigned long)cpu_pda(cpu)->irqstackptr; if (stack_end) { stack_start = stack_end & ~(IRQSTACKSIZE-1); irqstackptr is only guaranteed to be page aligned, not IRQSTACKSIZE (4*PAGE_SIZE) aligned. - 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/