Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751584AbaBLFul (ORCPT ); Wed, 12 Feb 2014 00:50:41 -0500 Received: from mx1.redhat.com ([209.132.183.28]:65273 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750922AbaBLFuk (ORCPT ); Wed, 12 Feb 2014 00:50:40 -0500 Date: Wed, 12 Feb 2014 00:50:27 -0500 From: Dave Jones To: Dave Chinner Cc: Al Viro , Linus Torvalds , Eric Sandeen , Linux Kernel , xfs@oss.sgi.com Subject: Re: 3.14-rc2 XFS backtrace because irqs_disabled. Message-ID: <20140212055027.GA28502@redhat.com> Mail-Followup-To: Dave Jones , Dave Chinner , Al Viro , Linus Torvalds , Eric Sandeen , Linux Kernel , xfs@oss.sgi.com References: <20140211172707.GA1749@redhat.com> <20140211210841.GM13647@dastard> <52FA9ADA.9040803@sandeen.net> <20140212004403.GA17129@redhat.com> <20140212010941.GM18016@ZenIV.linux.org.uk> <20140212040358.GA25327@redhat.com> <20140212042215.GN18016@ZenIV.linux.org.uk> <20140212054043.GB13997@dastard> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140212054043.GB13997@dastard> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 12, 2014 at 04:40:43PM +1100, Dave Chinner wrote: > None of the XFS code disables interrupts in that path, not does is > call outside XFS except to dispatch IO. The stack is pretty deep at > this point and I know that the standard (non stacked) IO stack can > consume >3kb of stack space when it gets down to having to do memory > reclaim during GFP_NOIO allocation at the lowest level of SCSI > drivers. Stack overruns typically show up with symptoms like we are > seeing. > .. > > Dave, before chasing ghosts, can you (like Eric originally asked) > turn on stack overrun detection? CONFIG_DEBUG_STACKOVERFLOW ? Already turned on. Dave -- 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/