From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from hera.kernel.org (hera.kernel.org [140.211.167.34]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 02CF0B7B69 for ; Thu, 24 Sep 2009 22:59:41 +1000 (EST) Message-ID: <4ABB6D33.6060706@kernel.org> Date: Thu, 24 Sep 2009 21:59:31 +0900 From: Tejun Heo MIME-Version: 1.0 To: Sachin Sant Subject: Re: 2.6.31-git5 kernel boot hangs on powerpc References: <4AB0D947.8010301@in.ibm.com> <4AB214C3.4040109@in.ibm.com> <1253185994.8375.352.camel@pasglop> <4AB25B61.9020609@kernel.org> <4AB266AF.9080705@in.ibm.com> <4AB49C37.6020003@in.ibm.com> <4AB9DAEC.3060309@in.ibm.com> <4AB9DD8F.1040305@kernel.org> <4ABA2DE2.6000601@kernel.org> <4ABB269F.6020309@in.ibm.com> In-Reply-To: <4ABB269F.6020309@in.ibm.com> Content-Type: text/plain; charset=ISO-8859-1 Cc: Linux/PPC Development , David Miller List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sachin Sant wrote: > Tejun Heo wrote: >> Can you please apply the attached patch and see whether anything >> interesting shows up in the kernel log? >> > Thanks Tejun for the debug patch. Attached here are the relevant logs. > The only messages related to percpu in the logs are > > <6>PERCPU: Embedded 2 pages/cpu @c000000001200000 s100232 r0 d30840 u524288 > <7>pcpu-alloc: s100232 r0 d30840 u524288 alloc=1*1048576 > <7>pcpu-alloc: [0] 0 1 > The captured logs are with latest git. Hmm... that means it wasn't caused by rogue percpu pointer access. Pleast wait a bit. I'll try to reproduce it. Thanks. -- tejun