linux-kernel - Re: drbd 8.0.2/3 doesn't load under kernel 2.6.21

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Message-Id: <a0624045cc2d691fb7294@[129.98.90.227]>
Date:	Wed, 1 Aug 2007 16:21:29 -0400
From:	Maurice Volaski <mvolaski@...om.yu.edu>
To:	jheffner@....edu
Cc:	discussion@...100.org, linux-kernel@...r.kernel.org,
	drbd-user@...ts.linbit.com
Subject: Re: drbd 8.0.2/3 doesn't load under kernel 2.6.21

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

>
>>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

-- 

Maurice Volaski, mvolaski@...om.yu.edu
Computing Support, Rose F. Kennedy Center
Albert Einstein College of Medicine of Yeshiva University
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