From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266035AbUGILfw (ORCPT ); Fri, 9 Jul 2004 07:35:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266022AbUGILfw (ORCPT ); Fri, 9 Jul 2004 07:35:52 -0400 Received: from zigzag.lvk.cs.msu.su ([158.250.17.23]:34000 "EHLO zigzag.lvk.cs.msu.su") by vger.kernel.org with ESMTP id S266035AbUGILfo convert rfc822-to-8bit (ORCPT ); Fri, 9 Jul 2004 07:35:44 -0400 From: "Nikita V. Youshchenko" To: Denis Vlasenko Subject: Re: Kernel crash in interrupt handler: nested interrupt breaks saved %eip? Date: Fri, 9 Jul 2004 15:34:31 +0400 User-Agent: KMail/1.6.2 Cc: linux-kernel@vger.kernel.org, debian-kernel@lists.debian.org References: <200407082351.13682@sercond.localdomain> <200407090031.09750.vda@port.imtp.ilyichevsk.odessa.ua> In-Reply-To: <200407090031.09750.vda@port.imtp.ilyichevsk.odessa.ua> MIME-Version: 1.0 Content-Disposition: inline Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Message-Id: <200407091534.35944@zigzag.lvk.cs.msu.su> X-Scanner: exiscan *1BiteG-00020F-00*8CCPQrd8wX6* Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > > EIP: 0060:[] Tainted: P > ^^^^^^^^^^ > What was that? Your lsmod please? That's caused by vmware bodules; I don't think they affect the situation. > > So I think that an interrupt happened at that time, and %eip was > > broken inside the handler. > > You can istrument your kernel to check for that on every interrupt > and printk a KERN_NOTICE message if eip was changed. What's the correct place for those? do_IRQ()? Or probably some other places also (APIC timer interrupt handler? exception handler?) Unpleasant situation is that the problem is on a production server, which should be operational 24/7 ... However, probably I'll try to install an instrumented kernel in the next kernel upgrade. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFA7oLLsTbPknTfAB4RAhGvAJ9n9246V7cMntgPnwmKBI/pcR0XGACeMnSY fuIaVh1yCssaJC0PWdHd7sE= =/8fI -----END PGP SIGNATURE-----