Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753226Ab3CUUrJ (ORCPT ); Thu, 21 Mar 2013 16:47:09 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:38042 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752759Ab3CUUrI (ORCPT ); Thu, 21 Mar 2013 16:47:08 -0400 Date: Thu, 21 Mar 2013 20:47:04 +0000 From: Al Viro To: Dave Jones , Linus Torvalds , Linux Kernel Subject: Re: VFS deadlock ? Message-ID: <20130321204704.GZ21522@ZenIV.linux.org.uk> References: <20130321190653.GA15479@redhat.com> <20130321192935.GY21522@ZenIV.linux.org.uk> <20130321202635.GA16406@redhat.com> <20130321203639.GC16406@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130321203639.GC16406@redhat.com> 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: 937 Lines: 19 On Thu, Mar 21, 2013 at 04:36:39PM -0400, Dave Jones wrote: > at some point during the fuzz run, this happened.. > > Mar 20 15:20:41 kernel: [ 7578.784674] fuse init (API version 7.21) > Mar 20 15:20:41 systemd[1]: Mounting FUSE Control File System... > Mar 20 15:20:41 systemd[1]: Mounted FUSE Control File System. > > I guess something wandered into /dev/fuse and did something. Not sure why > systemd reacted though... AFAICS, fuse uses d_materialise_unique() and d_splice_alias(), though, so it's not too likely source of that crap; there's no d_instantiate() calls at all and the sole d_add() is using an inode that has just been allocated, so it won't be creating aliases either... -- 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/