From mboxrd@z Thu Jan 1 00:00:00 1970 From: Charles Duffy Subject: Re: DomU panic in net_rx_action *initiated by another DomU*; 7503:20d1a79ebe31 Date: Wed, 02 Nov 2005 07:54:03 -0600 Message-ID: <4368C4FB.2020509@spamcop.net> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com Cc: "Mallick, Asit K" , "Nakajima, Jun" List-Id: xen-devel@lists.xenproject.org Ian Pratt wrote: > I think this issue is at least approximately understood, and is present > in all xen x86_64 kernels: > > rogue read-only mappings to linux heap pages left over from the 'initial > mapping' are preventing the netfront driver unmapping pages to hand over > as rx free buffers. This is compounded by the failure handling path > being slightly borked. I'm sorry to be a bother -- but is there any ETA on a fix, or a bugzilla entry by which I can track this issue? The only netfront-related checkin I see to bugzilla is a fix for bug#183, and that appears to be distinct (I'm not getting the "#### netfront can't alloc rx grant refs", and so would appear not to be hitting that code). This is happening quite frequently for me, even when I'm *not* using the kernel with the unstable module which triggers it every time. If there is no bugzilla entry, I'd be glad to start one -- but since the issue is described as already understood, it sounds like there's likely already a bug for it that I'm just not seeing.