Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261187AbUCEVso (ORCPT ); Fri, 5 Mar 2004 16:48:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261274AbUCEVso (ORCPT ); Fri, 5 Mar 2004 16:48:44 -0500 Received: from chaos.analogic.com ([204.178.40.224]:53379 "EHLO chaos.analogic.com") by vger.kernel.org with ESMTP id S261187AbUCEVsj (ORCPT ); Fri, 5 Mar 2004 16:48:39 -0500 Date: Fri, 5 Mar 2004 16:51:38 -0500 (EST) From: "Richard B. Johnson" X-X-Sender: root@chaos Reply-To: root@chaos.analogic.com To: Stuart_Hayes@Dell.com cc: linux-kernel@vger.kernel.org, andrew.grover@intel.com Subject: Re: ACPI stack overflow In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1665 Lines: 44 On Fri, 5 Mar 2004 Stuart_Hayes@Dell.com wrote: > > Hello... > > I think I am getting a stack overflow when Linux is parsing the ACPI > tables (initializing all the devices and running all the _STA methods). > I am using the x86_64 architecture. I would like to try increasing the > kernel stack size, but I'm not sure how to go about doing this. > Could someone tell me how to increase the kernel stack size? > (And, has anyone else seen a problem with stack overflows with ACPI?) > Please fix your mailer. In Unix/Linux, we put in a [Enter] ('\n') every once in awhile, usually every 79 charcters so that a line of text does not exceed 80 characters. We do not let some indefinite screen "auto-wrap". > Thanks! > Stuart > stuart_hayes@dell.com There have been continual changes over the years to reduce the amount of kernel stack that the kernel uses because kernel stack- space is "expensive". It needs to be changed in pages. I think that if you have a stack-overflow, then you are writing poor kernel code. In the kernel, do not put arrays on the stack, i.e, in "local" space. Use kmalloc()/kfree() instead. Basically, do not increase the stack size. It just masks problems. It does not make them go away. If you need more stack, you are doing something wrong. Cheers, Dick Johnson Penguin : Linux version 2.4.24 on an i686 machine (797.90 BogoMips). Note 96.31% of all statistics are fiction. - 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/