Return-Path: Received: from cantor.suse.de ([195.135.220.2]:60870 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757764Ab1BKQ7p (ORCPT ); Fri, 11 Feb 2011 11:59:45 -0500 Date: Fri, 11 Feb 2011 17:59:44 +0100 Message-ID: From: Takashi Iwai To: "J. Bruce Fields" Cc: Tino Keitel , Neil Brown , Trond Myklebust , linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: 2.6.38-rc3: kernel BUG at fs/nfsd/nfs4state.c:3132! In-Reply-To: References: <20110208221235.GA16984@mac.home> <20110211152112.GA3005@fieldses.org> <20110211153702.GC3005@fieldses.org> <20110211160532.GD3005@fieldses.org> Content-Type: text/plain; charset=US-ASCII Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 At Fri, 11 Feb 2011 17:57:21 +0100, Takashi Iwai wrote: > > At Fri, 11 Feb 2011 17:12:33 +0100, > Takashi Iwai wrote: > > > > At Fri, 11 Feb 2011 11:05:32 -0500, > > J. Bruce Fields wrote: > > > > > > On Fri, Feb 11, 2011 at 05:01:18PM +0100, Takashi Iwai wrote: > > > > At Fri, 11 Feb 2011 10:37:02 -0500, > > > > J. Bruce Fields wrote: > > > > > > > > > > On Fri, Feb 11, 2011 at 04:29:56PM +0100, Takashi Iwai wrote: > > > > > > At Fri, 11 Feb 2011 10:21:12 -0500, > > > > > > J. Bruce Fields wrote: > > > > > > > Again, 2.6.38-rc4 does not have a BUG() on line 3132. Could you post > > > > > > > the full oops message from your machine? > > > > > > > > > > > > Well, on vanilla 2.6.38-rc4, it's in nfs4_preprocess_stateid_op(): > > > > > > if (filpp) { > > > > > > *filpp = find_readable_file(dp->dl_file); > > > > > > ==> BUG_ON(!*filpp); > > > > > > } > > > > > > > > > > Oh good grief, my apologies--I mistyped "38" as "28"! > > > > > > > > > > This looks like it could be a known delegation bug.... Would it be > > > > > possible for you to check whether this is reproduceable on > > > > > > > > > > git://linux-nfs.org/~bfields/topics.git for-2.6.38-incoming > > > > > > > > Hm, I couldn't pull it. > > > > > > > > % git pull 'git://linux-nfs.org/~bfields/topics.git' for-2.6.38-incoming > > > > fatal: The remote end hung up unexpectedly > > > > > > Should be linux-topics, apologies again: > > > > > > git://linux-nfs.org/~bfields/linux-topics.git for-2.6.38-incoming > > > > Thanks. I'm going to give it a try now. > > Looks good so far. I'll let you know if it's triggered again. Argh, too early to say. Now I got the same one. It seems that it's triggered when I start Firefox on NFS client machine. Takashi