From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262141AbUB2VYt (ORCPT ); Sun, 29 Feb 2004 16:24:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262142AbUB2VYt (ORCPT ); Sun, 29 Feb 2004 16:24:49 -0500 Received: from main.gmane.org ([80.91.224.249]:22967 "EHLO main.gmane.org") by vger.kernel.org with ESMTP id S262141AbUB2VYs (ORCPT ); Sun, 29 Feb 2004 16:24:48 -0500 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: mru@kth.se (=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=) Subject: Re: kernel unaligned acc on Alpha Date: Sun, 29 Feb 2004 22:24:45 +0100 Message-ID: References: <20040229215546.065f42e9.gigerstyle@gmx.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: ti211310a080-4136.bb.online.no User-Agent: Gnus/5.1006 (Gnus v5.10.6) XEmacs/21.4 (Security Through Obscurity, linux) Cancel-Lock: sha1:HAr9Yr0mkeyhfuKb8mnnjowWVzc= Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Marc Giger writes: > Hi All, > > I have a lot of unaligned accesses in kernel space: > > kernel unaligned acc : 2191330 > (pc=fffffffc002557d8,va=fffffffc00256059) > > It seems to be located in the networking part (iptables?) from the > kernel. Can someone please help me how to find the location of these > uac's? I already have recompiled the kernel with debugging enabled and > tried to debug it with gdb. Find the matching function in System.map. Look for the entry with the highest address less than or equal to the pc value. > Another question: What's the meaning of va? It's the virtual memory address being accessed. The va value is rather close to the pc, so I would guess that it is some static data from the same source file as the function that is being accessed. -- Måns Rullgård mru@kth.se