From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from tauceti.net ([62.245.250.166]:55094 "EHLO www.tauceti.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751787Ab0DZWSs (ORCPT ); Mon, 26 Apr 2010 18:18:48 -0400 Message-ID: <4BD61147.40709@tauceti.net> Date: Tue, 27 Apr 2010 00:18:47 +0200 From: Robert Wimmer To: Trond Myklebust CC: "Michael S. Tsirkin" , Avi Kivity , Andrew Morton , linux-mm@kvack.org, bugzilla-daemon@bugzilla.kernel.org, Rusty Russell , Mel Gorman , linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [Bugme-new] [Bug 15709] New: swapper page allocation failure References: <4BC43097.3060000@tauceti.net> <4BCC52B9.8070200@tauceti.net> <20100419131718.GB16918@redhat.com> <20100421094249.GC30855@redhat.com> <20100422100304.GC30532@redhat.com> <4BD12F9C.30802@tauceti.net> <20100425091759.GA9993@redhat.com> <4BD4A917.70702@tauceti.net> <20100425204916.GA12686@redhat.com> <1272284154.4252.34.camel@localhost.localdomain> <4BD5F6C5.8080605@tauceti.net> <1272315854.8984.125.camel@localhost.localdomain> In-Reply-To: <1272315854.8984.125.camel@localhost.localdomain> Content-Type: text/plain; charset=UTF-8 Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 > Sure. In addition to what you did above, please do > > mount -t debugfs none /sys/kernel/debug > > and then cat the contents of the pseudofile at > > /sys/kernel/debug/tracing/stack_trace > > Please do this more or less immediately after you've finished mounting > the NFSv4 client. > I've uploaded the stack trace. It was generated directly after mounting. Here are the stacks: After mounting: https://bugzilla.kernel.org/attachment.cgi?id=26153 After the soft lockup: https://bugzilla.kernel.org/attachment.cgi?id=26154 The dmesg output of the soft lockup: https://bugzilla.kernel.org/attachment.cgi?id=26155 > Does your server have the 'crossmnt' or 'nohide' flags set, or does it > use the 'refer' export option anywhere? If so, then we might have to > test further, since those may trigger the NFSv4 submount feature. > The server has the following settings: rw,nohide,insecure,async,no_subtree_check,no_root_squash Thanks! Robert