From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: PROBLEM: Deadlock in attach_device() in AMD IOMMU driver Date: Mon, 11 May 2015 12:15:29 +0200 Message-ID: <20150511101528.GI20611@8bytes.org> References: <55488C3D.50509@solarflare.com> <20150505144159.GI15736@8bytes.org> <5548D814.6020807@solarflare.com> <20150505153344.GR15736@8bytes.org> <5549FEA1.9080801@solarflare.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <5549FEA1.9080801-s/n/eUQHGBpZroRs9YW3xA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Gregor Dick Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Kieran Mansley List-Id: iommu@lists.linux-foundation.org Hi Gregor, On Wed, May 06, 2015 at 12:44:33PM +0100, Gregor Dick wrote: > On 05/05/15 16:33, Joerg Roedel wrote: > >Okay, I'll have a look into the SLES12 kernel sources to check there. > >Can you reproduce this with a recent upstream kernel? > > I've done some more tests this morning and can reproduce the problem on > a vanilla 4.0 kernel with a SLES12 userland, and also on a stock > installation of Ubuntu 14.10 with a 3.16-derived kernel. > > I neglected to mention kernel command-line options earlier: Thanks for testing this, I will work on a fix. Joerg