From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id 22C42B6F34 for ; Fri, 7 Aug 2009 00:26:35 +1000 (EST) Date: Thu, 6 Aug 2009 10:26:24 -0400 From: Josh Boyer To: srikanth krishnakar Subject: Re: PowerPC kernel linux-2.6.29.6 crashes at mm/slab.c for ipsec application Message-ID: <20090806142624.GF8985@zod.rchland.ibm.com> References: <6213bc560908060616m540e20e9o17a26e36662f63d8@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <6213bc560908060616m540e20e9o17a26e36662f63d8@mail.gmail.com> Cc: Linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, Aug 06, 2009 at 06:46:26PM +0530, srikanth krishnakar wrote: >Hi all, > >Here is kernel bug for linux-2.6.29.6 for PowerPC (ppc440) target, while >running ipsec application it is observed that kernel oops'es oftenly as show >below : > >root@powerpc:~# ./ipsec >------------[ cut here ]------------ >kernel BUG at mm/slab.c:3002! >Oops: Exception in kernel mode, sig: 5 [#1] >PREEMPT LTT NESTING LEVEL : 0 LTT? >Any Clue or any bugs found in mm/slab.c for linux-2.6.29.6 while >running IPSEC applications ? Do you have CONFIG_PREEMPT set? The oops output seems to think so. Also, seeing the LTT makes me wonder if you have added custom patches to your kernel? Do you have a simple testcase that could be run to recreate this? If so, could you provide it somewhere and perhaps your .config? josh