Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759207Ab2FFXBM (ORCPT ); Wed, 6 Jun 2012 19:01:12 -0400 Received: from mx1.redhat.com ([209.132.183.28]:7327 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758838Ab2FFXBJ (ORCPT ); Wed, 6 Jun 2012 19:01:09 -0400 Date: Wed, 6 Jun 2012 19:00:40 -0400 From: Dave Jones To: Linus Torvalds Cc: Al Viro , Linux Kernel , Miklos Szeredi , Jan Kara Subject: Re: processes hung after sys_renameat, and 'missing' processes Message-ID: <20120606230040.GA18089@redhat.com> Mail-Followup-To: Dave Jones , Linus Torvalds , Al Viro , Linux Kernel , Miklos Szeredi , Jan Kara References: <20120603223617.GB7707@redhat.com> <20120603231709.GP30000@ZenIV.linux.org.uk> <20120603232820.GQ30000@ZenIV.linux.org.uk> <20120606194233.GA1537@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 Content-Length: 964 Lines: 22 On Wed, Jun 06, 2012 at 03:38:46PM -0700, Linus Torvalds wrote: > So what filesystem is this? The box I saw it on a few days ago: ext4. Today's box: btrfs > It really looks like something has left i_mutex locked on a directory, > but I'm for the life of me not seeing it. There are lookup changes > mainly by Miklos, but they don't seem to change the i_mutex locking. It is possible that this is a bug stretching back further than 3.4. I'm continually adding new ways to do terrible things to the fuzzer, and this last week or so has seen quite a few changes. So maybe I've only just found a way to tickle this particular bug. (Just like the situation we had with the mbind corruption a few weeks back). 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/