Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 2 Oct 2001 11:46:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 2 Oct 2001 11:45:54 -0400 Received: from gap.cco.caltech.edu ([131.215.139.43]:5825 "EHLO gap.cco.caltech.edu") by vger.kernel.org with ESMTP id ; Tue, 2 Oct 2001 11:45:39 -0400 Subject: Re: your mail To: dinesh_gandhewar@rediffmail.com Date: Tue, 2 Oct 2001 16:30:05 +0100 (BST) Cc: mlist-linux-kernel@nntp-server.caltech.edu In-Reply-To: <20011002152945.15180.qmail@mailweb16.rediffmail.com> from "Dinesh Gandhewar" at Oct 02, 2001 03:29:45 PM X-Mailer: ELM [version 2.5 PL6] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: From: Alan Cox Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > I have written a linux kernel module. The linux version is 2.2.14. > In this module I have declared an array of size 2048. If I use this array, the execution of this module function causes kernel to reboot. If I kmalloc() this array then execution of this module function doesnot cause any problem. > Can you explain this behaviour? Yes -- Alan [Oh wait you want to know why...] Either 1. You are using it for DMA 2. You are putting it on the stack and causing a stack overflow - 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/