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Date: Thu, 10 Jul 2014 15:31:07 -0700
From: Chris Wright <chrisw@redhat.com>
To: "Daniel, Christopher" <Chris.Daniel@flukenetworks.com>
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Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] Error while inserting module /build/kmod/igb_uio.ko
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* Daniel, Christopher (Chris.Daniel@flukenetworks.com) wrote:
> All,
> 
> I have the following configuration on my machine
> 
> Linux localhost.localdomain 3.12.6 #4 SMP Fri Dec 27 14:26:57 EST 2013 x86_64 x86_64 x86_64 GNU/Linux : Centos
> 
> 
> 1)      Downloaded the latest version of DPK ( 1.7);
> 
> 
> 2)      Executing the quick start instructions ( running gcc 4.7.x)
> 
> 
> 
> 3)      Having an issue with
> 
> 
> 
>       # insmod build/kmod/igb_uio.ko
> 
> I am getting
> 
> insmod: error inserting './build/kmod/igb_uio.ko': -1 Unknown symbol in module
> 
> dmesg:
> igb_uio: Unknown symbol __fentry__ (err 0)

seems like you have built module w/ CONFIG_FTRACE and built kernel
w/out.  did you manually set RTE_KERNELDIR when you built (if so, is it
pointing to the right location?)

thanks,
-chris