From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1BiPd9-0002qO-Fv for user-mode-linux-devel@lists.sourceforge.net; Wed, 07 Jul 2004 20:31:27 -0700 Received: from mout2.freenet.de ([194.97.50.155]) by sc8-sf-mx2.sourceforge.net with esmtp (TLSv1:AES256-SHA:256) (Exim 4.34) id 1BiPd8-0000Qb-QC for user-mode-linux-devel@lists.sourceforge.net; Wed, 07 Jul 2004 20:31:27 -0700 From: Michael Koehne Subject: Re: [uml-devel] Unable to handle kernel paging request ... Message-ID: <20040708033126.GA10586@bakunin.copyleft.de> References: <200407071945.30015.blaisorblade_spam@yahoo.it> <200407071929.46294.blaisorblade_spam@yahoo.it> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200407071945.30015.blaisorblade_spam@yahoo.it> <200407071929.46294.blaisorblade_spam@yahoo.it> Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Thu, 8 Jul 2004 05:31:26 +0200 To: BlaisorBlade , user-mode-linux-devel@lists.sourceforge.net Moin BlaisorBlade, > > I've talked to people on IRC, and they dont encounter those kind of > > ext3 crashes on 2.6 kernels. I dont had a camera for a screenshot, > > but dump was in ext3 area. > What you mean with "ext3 crash"? "The dump was in ext3 area"? I don't > understand you, sorry. the crash 2.6.1+SKAS happened on file system operations on the host, while UML systems had been up and running - I first seen them once on find, and twice on rsync directory file walks on the host. I upgraded to 2.6.6+SKAS and they occured seldom. My server moved housing also, and is now hosting the UMLs. So I only know that its a seldom condition that is ext3_ related, but might be related to the UML patch - as others dont tell about so many panics - but does not require an UML to touch /proc/mm. Yesterday I noticed some points at the kernel panic, that started at postmaster at crontab time, and had a lot of ext3 pointers - but I did'nt had the patiens to write 3 pages of kernel panic ;( > Well, the UML patch should have no influence, if you don't run UML on it (if > it happens after you have run UML at least once, there is still a chance the patch host-skas3-2.6.6-v1.patch is applied and running - but /proc/mm was virgin - as there was no UML started on this machine for some days. > > or 34896138 May 25 20:45 linux-2.6.6.tar.bz2 > > + 16182 May 25 20:35 host-skas3-2.6.6-v1.patch I'll stick to that combo for some more days (because of laziness ;) and hope to be more patient writing down the kernel panic next time. > the second one is safe enough > (though somebody experience memory leaks... as reported on > http://www.user-mode-linux.org/~blaisorblade; however, they seldom happen). *hm* whats the current 'best practice patch' for 2.6.x ? an rsync copy of my server's UML to my laptop's UML is a nice thing I wont want to miss anymore, even if the Double-NAT between them was a bit confusing at first - and 2.4.22 SKAS server and 2.4.22 UML are stable like a rock - at least in my ubd over ext3 over md-raid1 on a Dual processor environment. > You say in the title "Unable to handle kernel paging request". It means you > got a panic... Have you saved somewhere the complete message? Have you > checked if it's inside /var/log/messages? its not in any logs - as it was ext3 related on the host file system, if I managed to understand the dump. The process was postmaster running from cron on the host - there was no UML running since boot and the trace mentioned a lot of ext3_ . > Does "dump was in ext3 area" means > that the call trace mentioned ext3_ ? If it speaks about > __init_new_context, proc_mm or such things then the SKAS patch is likely to > be at fault, if not it's unlikely... I'll look at those more closely if it happens again, any other pointers so I could sort out UML related areas here ? I'll also might find the time to try a more actual kernel+skas combo before - as the crash is seldom, on a machine, I'm using regulary for about 2-4 full load hours from compiler per day with normal background processes in the other time. Bye Michael -- mailto:kraehe@copyleft.de UNA:+.? 'CED+2+:::Linux:2.4.22'UNZ+1' http://www.xml-edifact.org/ CETERUM CENSEO WINDOWS ESSE DELENDAM ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel