From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from fieldses.org (fieldses.org [174.143.236.118]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id D10382C00BF for ; Sat, 29 Sep 2012 01:27:46 +1000 (EST) Date: Fri, 28 Sep 2012 11:10:43 -0400 To: Alexander Graf Subject: Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC Message-ID: <20120928151043.GA19102@fieldses.org> References: <3BDA9E62-7031-42D6-8CA9-5327B61700F5@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: From: "J. Bruce Fields" Cc: linux-nfs@vger.kernel.org, Jan Kara , Linus Torvalds , LKML List , skinsbursky@parallels.com, bfields@redhat.com, linuxppc-dev List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, Sep 28, 2012 at 04:19:55AM +0200, Alexander Graf wrote: > > On 28.09.2012, at 04:04, Linus Torvalds wrote: > > > On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf wrote: > >> > >> Below are OOPS excerpts from different rc's I tried. All of them crashed - all the way up to current Linus' master branch. I haven't cross-checked, but I don't remember any such behavior from pre-3.6 releases. > > > > Since you seem to be able to reproduce it easily (and apparently > > reliably), any chance you could just bisect it? > > > > Since I assume v3.5 is fine, and apparently -rc1 is already busted, a simple > > > > git bisect start > > git bisect good v3.5 > > git bisect bad v3.6-rc1 > > > > will get you started on your adventure.. > > Heh, will give it a try :). The thing really does look quite bisectable. > > > It might take a few hours though - the machine isn't exactly fast by today's standards and it's getting late here. But I'll keep you updated. I doubt it's anything special about that workload, but just for kicks I tried a "git clone -ls" (cloning my linux tree to another directory on the same nfs filesystem), with server on 3.6.0-rc7, and didn't see anything interesting (just an xfs lockdep warning that looks like this one jlayton already reported: http://oss.sgi.com/archives/xfs/2012-09/msg00088.html ) Any (even partial) bisection results would certainly be useful, thanks. --b.