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Date: Fri, 17 Feb 2006 23:41:32 +0300
From: Solar Designer <solar@...nwall.com>
To: owl-users@...ts.openwall.com
Subject: Re: cisco vpnclient
On Fri, Feb 17, 2006 at 08:31:37PM +0100, Bernhard Fischer wrote:
> That is the relevant part from the driver_build.sh script:
> #########snip###########
> INCLUDES="-I. -I${KSRCDIR}/include"
> CFLAGS="-O2 -DCNI_LINUX_INTERFACE -D__KERNEL__ -DMODULE
> -D_LOOSE_KERNEL_NAMES -DHAVE_CONFIG_H"
Note the lack of -DMODVERSIONS here. Also, if your kernel is built for
SMP, there must be -D__SMP__ here.
> rpm!root:~/vpnclient# ./driver_build.sh /usr/src/linux
FWIW, it is not a good idea to be compiling stuff as root. We've got
pseudo-user "sources" for compiling the kernel and kernel modules.
> rpm!root:~/vpnclient# insmod ./cisco_ipsec
> ./cisco_ipsec: ./cisco_ipsec: unresolved symbol eth_type_trans
> ./cisco_ipsec: ./cisco_ipsec: unresolved symbol __kfree_skb
> ./cisco_ipsec: ./cisco_ipsec: unresolved symbol alloc_skb
> ./cisco_ipsec: ./cisco_ipsec: unresolved symbol htons
> ./cisco_ipsec: ./cisco_ipsec: unresolved symbol skb_under_panic
> ./cisco_ipsec: ./cisco_ipsec: unresolved symbol kmalloc
[...]
So it fails to find even the most essential symbols. My guess is that
you have the kernel built with CONFIG_MODVERSIONS, but you are not
building the module in the same way. You need to either rebuild the
kernel without modversions or build the module with modversions as well.
--
Alexander Peslyak <solar at openwall.com>
GPG key ID: B35D3598 fp: 6429 0D7E F130 C13E C929 6447 73C3 A290 B35D 3598
http://www.openwall.com - bringing security into open computing environments
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