From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261814AbTD2MKq (ORCPT ); Tue, 29 Apr 2003 08:10:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261821AbTD2MKq (ORCPT ); Tue, 29 Apr 2003 08:10:46 -0400 Received: from [203.124.139.208] ([203.124.139.208]:61612 "EHLO pcsbom.patni.com") by vger.kernel.org with ESMTP id S261814AbTD2MKp (ORCPT ); Tue, 29 Apr 2003 08:10:45 -0400 Reply-To: From: "Chandrasekhar" To: Subject: Stack Trace dump in do_IRQ Date: Tue, 29 Apr 2003 18:04:28 +0530 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi All, We have a custom driver which runs on Red Hat Advanced Server 2.1(kernel version 2.4.9-e.3). On loading the driver (using insmod) and running our configuration program, we got folowing warning message "do_IRQ: stack overflow: 1786" and along with the stack trace. The configuration program, however, ran successfully. On going through the do_IRQ code in arch/i386/kernel/irq.c we found that is is used for debugging check for stack overflow i.e if the stack size is less than 2KB free. There is no similar debugging check in other kernels like 2.4.7-10,2.4.18-3 and 2.4.18-14. What is the significance of this debugging information and why other kernels dont have the same check? Also, if the stack overflow can cause future problems, then how can we increase the stack size? Thanks in advance for any information on this. Thanks and Regards Chandrasekhar