From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: problem with "undefined instruction" Date: Tue, 7 Jun 2011 14:53:31 +0300 Message-ID: <20110607115331.GZ8696@atomide.com> References: <20110430162357.GA14287@earth.universe> <20110606125600.GB20909@earth.universe> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mho-04-ewr.mailhop.org ([204.13.248.74]:37155 "EHLO mho-02-ewr.mailhop.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750964Ab1FGLx3 (ORCPT ); Tue, 7 Jun 2011 07:53:29 -0400 Content-Disposition: inline In-Reply-To: <20110606125600.GB20909@earth.universe> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Sebastian Reichel Cc: linux-omap@vger.kernel.org * Sebastian Reichel [110606 15:51]: > On Sat, Apr 30, 2011 at 06:23:57PM +0200, Sebastian Reichel wrote: > > I'm currently trying to get a mainline based kernel running on my pandaboard. > > The problem is, that it's crashing very early during the init phase because of > > "undefined instruction" exceptions: > > > > [ 1.867980] udevd (56): undefined instruction: pc=401e6ed4 > > [ 1.874603] Code: 9cd0 fffe e92d 4ff0 (ed2d) > > [ 1.977752] modprobe (69): undefined instruction: pc=400c6ed4 > > [ 1.977783] Code: 9cd0 fffe e92d 4ff0 (ed2d) > > [ 1.978240] init (1): undefined instruction: pc=40149ed4 > > [ 1.978240] Code: 9cd0 fffe e92d 4ff0 (ed2d) > > [ 2.005706] Kernel panic - not syncing: Attempted to kill init! > > > > Exactly the same userland boots fine with the original 2.6.35 kernel, so it's > > probably not the userland's fault. > > I found the source of this problem. VFPv3 support is not working > correctly when OMAP2 (and thus CPU_V6) is enabled in the kernel > config. > > I guess this should be mentioned in the kernel config (or fixed if > possible). This should be easy to fix now. Do you have a minimal test program that triggers this? Tony