From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262053AbVGOX04 (ORCPT ); Fri, 15 Jul 2005 19:26:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262084AbVGOX04 (ORCPT ); Fri, 15 Jul 2005 19:26:56 -0400 Received: from pfepa.post.tele.dk ([195.41.46.235]:34064 "EHLO pfepa.post.tele.dk") by vger.kernel.org with ESMTP id S262053AbVGOXZV (ORCPT ); Fri, 15 Jul 2005 19:25:21 -0400 Subject: Re: reiserfs+acl makes processes hang? From: Kasper Sandberg To: Tarmo =?ISO-8859-1?Q?T=E4nav?= Cc: linux-kernel@vger.kernel.org In-Reply-To: <1121469596.17539.9.camel@localhost> References: <1121469596.17539.9.camel@localhost> Content-Type: text/plain; charset=ISO-8859-15 Date: Sat, 16 Jul 2005 01:25:20 +0200 Message-Id: <1121469920.18525.0.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.2.1.1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org confirmed, i run 2.6.12 with reiserfs, created with reiserfsprogs 3.6.19 On Fri, 2005-07-15 at 23:19 +0000, Tarmo Tänav wrote: > Hi, > > I think I've found a bug in reiserfs acls. If triggered > it means that any program trying to access the partition, > where the bug occured, will just hang in D state, with > no way to kill the program. > > Here's how to reproduce: > 1. mount a reiserfs volume (loopmount will do) with "-o acl". > 2. create a directory "dir" > 3. set some default acl: setfacl -d -m u:username:rwX dir > 4. cd dir > 5. dd if=/dev/zero of=somefile1 bs=4k count=100000 > (the idea is to run out of space) > 6. now df should show 0 free space, if not then repeat 5. > 7. echo "1" > somefile2 # this should hang infinitely > > Now no program will be able to access the partition. > > I haven't tried to reproduce it, but the same problem also happened > when a user hit his hard quota limit on my server. Then no program > could access his homedir. > > > PS. I'm not subscribed to lkml so please CC > > -- > Tarmo Tänav > tarmo@itech.ee > > - > 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/ >