From mboxrd@z Thu Jan 1 00:00:00 1970 From: Quartexx Subject: Re: blktap problem: Re: BUG: unable to handle kernel NULL pointer dereference (4.0.1 w/2.6.32.36) Date: Sat, 11 Jun 2011 14:53:37 +0200 Message-ID: References: <1307791064669-4478572.post@n5.nabble.com> <20110611112602.GC32595@reaktio.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 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: =?ISO-8859-1?Q?Pasi_K=E4rkk=E4inen?= Cc: xen-devel@lists.xensource.com, Daniel Stodden List-Id: xen-devel@lists.xenproject.org 2011/6/11 Quartexx : > 2011/6/11 Pasi K=E4rkk=E4inen : >> Hello, >> I added Daniel as CC, maybe he has some ideas about this one. >> What do you do when this crash happens? How to reproduce it? Absolutely nothing. 4 guests (all pvops) are running. It happens in the night when load is very low. I disabled C-states too from bios and I set max_cstate=3D1 as a kernel boot option. Still, no luck. As I said this happened always in the night. The only scheduled thing running in the night is the 3ware Check S.M.A.R.T. Thresholds self-test (it runs every day at 12.00 am. Crashes happened at 01:06 am and 02:17 am. Other info: Xen dom0 dedicated memory and preventing dom0 memory ballooning and more CPU time than the guests (credit scheduler). So I really don't know how to reproduce it..but it happens :\ Thanks for your help