From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id pBC2Vahm065706 for ; Sun, 11 Dec 2011 20:31:38 -0600 Received: from one.firstfloor.org (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 0A217156D8B4 for ; Sun, 11 Dec 2011 18:31:33 -0800 (PST) Received: from one.firstfloor.org (one.firstfloor.org [213.235.205.2]) by cuda.sgi.com with ESMTP id xkbs0meZSRklnLg1 for ; Sun, 11 Dec 2011 18:31:33 -0800 (PST) Date: Mon, 12 Dec 2011 03:31:30 +0100 From: Andi Kleen Subject: Re: XFS causing stack overflow Message-ID: <20111212023130.GI24062@one.firstfloor.org> References: <20111209115513.GA19994@infradead.org> <20111209221956.GE14273__25752.826271537$1323469420$gmane$org@dastard> <20111210221345.GG14273@dastard> <20111211000036.GH24062@one.firstfloor.org> <20111211230511.GH14273@dastard> Mime-Version: 1.0 Content-Disposition: inline In-Reply-To: <20111211230511.GH14273@dastard> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Dave Chinner Cc: Christoph Hellwig , linux-mm@kvack.org, "Ryan C. England" , Andi Kleen , xfs@oss.sgi.com > But that happens before do_IRQ is called, so what is the do_IRQ call > chain doing on this stack given that we've already supposed to have > switched to the interrupt stack before do_IRQ is called? Not sure I understand the question. The pt_regs are on the original stack (but they are quite small), all the rest is on the new stack. ISTs are not used for interrupts, only for some special exceptions. do_IRQ doesn't switch any stacks on 64bit. -Andi -- ak@linux.intel.com -- Speaking for myself only. _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs