From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerd Knorr Subject: Re: bug: slab corruption (net backend?) Date: 07 Jul 2005 17:54:07 +0200 Message-ID: <873bqqhasg.fsf@bytesex.org> References: <20050707094132.GA29339@bytesex> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <20050707094132.GA29339@bytesex> 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 List-Id: xen-devel@lists.xenproject.org Gerd Knorr writes: > With the small debug patch below and CONFIG_DEBUG_SLAB=y I get > plenty of these messages in the dom0 kernel log as soon as I > start a domU: > > Slab corruption: start=dc423000, len=4096 > Slab name: xen-skb > 000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 After digging in the netback code I'm not sure any more this is a real bug. Could also be the slab debugging can deal with the page mapping tricks the netback driver does when sending/receiving packets. The start address mentioned referes to a page allocated via alloc_mfn() in netback.c ... Gerd -- panic("it works"); /* avoid being flooded with debug messages */