Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755451AbXHAWfR (ORCPT ); Wed, 1 Aug 2007 18:35:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753434AbXHAWfD (ORCPT ); Wed, 1 Aug 2007 18:35:03 -0400 Received: from emailhub.stusta.mhn.de ([141.84.69.5]:57434 "EHLO mailhub.stusta.mhn.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753371AbXHAWfB (ORCPT ); Wed, 1 Aug 2007 18:35:01 -0400 Date: Thu, 2 Aug 2007 00:34:40 +0200 From: Adrian Bunk To: Maurice Volaski Cc: jheffner@psc.edu, discussion@web100.org, linux-kernel@vger.kernel.org, drbd-user@linbit.com Subject: Re: drbd 8.0.2/3 doesn't load under kernel 2.6.21 Message-ID: <20070801223440.GS3972@stusta.de> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.16 (2007-06-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2015 Lines: 49 On Wed, Aug 01, 2007 at 04:21:29PM -0400, Maurice Volaski wrote: > I'm making an assumption that depmod is somehow to blame and have logged > this as a kernel bug, http://bugzilla.kernel.org/show_bug.cgi?id=8829 depmod is working fine. It's the interaction between your two patches that breaks it for you. >>> It turns out I was adding the web100 patch (http://www.web100.org) to >>> the 2.6.21 kernel and that's what causes the symbol resolving problem >>> below. Adding the corresponding version of the web100 patch to the >>> 2.6.20 kernel makes this problem appear there as well. On fresh >>> versions of the kernel, this problem does not occur. At the moment, >>> it's not possible to have a current kernel that contains both drbd >>> and web100. >>> >>>> On a 64-bit Gentoo system with Gentoo's 2.6.21 kernel, drbd 8.0.2/3 >>>> complains when I try to load the module: >>>> >>>> [ 134.141363] drbd: Unknown symbol cn_fini >>>> [ 134.141399] drbd: Unknown symbol cn_init >>>> >>>> It works fine when I compile it and load in the previous kernel >>>> version, 2.6.20 and the symbols are present in the map file >>>> >>>> ./System.map-genkernel-x86_64-2.6.21-gentoo-r2:ffffffff802935aa t >>>> cn_fini >>>> ./System.map-genkernel-x86_64-2.6.21-gentoo-r2:ffffffff8029362a t >>>> cn_init >>>> >>>> I am c'cing the kernel mailing list because this appears to be a >>>> problem with how any module accesses symbols in the kernel, not just >>> >drbd. Source was compiled with Gentoo gcc-4.1.2, glibc-2.5-r3 cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/