Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx1.redhat.com ([209.132.183.28]:30706 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751806AbaIYNHz convert rfc822-to-8bit (ORCPT ); Thu, 25 Sep 2014 09:07:55 -0400 From: David Howells In-Reply-To: <28059.1411650278@warthog.procyon.org.uk> References: <28059.1411650278@warthog.procyon.org.uk> To: trond.myklebust@primarydata.com Cc: dhowells@redhat.com, linux-nfs@vger.kernel.org, steved@redhat.com Subject: Re: NMI/soft lockup in nfs_delegation_need_return() MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Thu, 25 Sep 2014 14:07:50 +0100 Message-ID: <28111.1411650470@warthog.procyon.org.uk> Sender: linux-nfs-owner@vger.kernel.org List-ID: David Howells wrote: > I'm seeing the soft lockup below occasionally. I'm using the head of Linus's > master branch (005f800508eb391480f463dad3d54e5b4ec67d57). Plus a pair of > cachefiles patches that should have no bearing on the matter. I'm seeing the > lockup both with and without a cache. I did the following: I should mention that the server is running the most recent Fedora 20 kernel: 3.16.2-201.fc20.x86_64 and that and the client are connected by gigabit ethernet with not much other traffic on the network. David