linux-kernel - Re: 2.6.23-rc4-mm1 myri10ge module link error on x86

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Date:	Sat, 13 Oct 2007 15:03:20 -0700
From:	"Avuton Olrich" <avuton@...il.com>
To:	"Jeff Garzik" <jeff@...zik.org>
Cc:	"David Miller" <davem@...emloft.net>, mathieu.desnoyers@...ymtl.ca,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	help@...i.com
Subject: Re: 2.6.23-rc4-mm1 myri10ge module link error on x86_64

On 9/7/07, Jeff Garzik <jeff@...zik.org> wrote:
> David Miller wrote:
> > From: David Miller <davem@...emloft.net>
> > Date: Thu, 06 Sep 2007 13:40:38 -0700 (PDT)
> >
> >> From: Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
> >> Date: Thu, 6 Sep 2007 15:37:51 -0400
> >>
> >>> I got a link error on myri10ge when building 2.6.23-rc4-mm1 on x86_64 :
> >>>
> >>> ERROR: "lro_flush_all" [drivers/net/myri10ge/myri10ge.ko] undefined!
> >>> ERROR: "lro_receive_frags" [drivers/net/myri10ge/myri10ge.ko] undefined!
> >>> make[2]: *** [__modpost] Error 1
> >>> make[1]: *** [modules] Error 2
> >>> make: *** [_all] Error 2
> >> myri10ge needs some LRO ifdeffery.
> >
> > Actually the fix is even simpler, missing select in Kconfig.
> >
> > I've checked the following fix for this into the net-2.6.24
> > tree.
> >
> > commit 9fd380e892e078b582920325357292c07eeeecc9
> > Author: David S. Miller <davem@...chee.(none)>
> > Date:   Thu Sep 6 21:44:36 2007 +0100
> >
> >     [MYRI10GE]: Need to select INET_LRO.
> >
> >     Signed-off-by: David S. Miller <davem@...emloft.net>
> >
> > diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
> > index b92b7dc..7d1a84e 100644
> > --- a/drivers/net/Kconfig
> > +++ b/drivers/net/Kconfig
> > @@ -2496,6 +2496,7 @@ config MYRI10GE
> >       depends on PCI
> >       select FW_LOADER
> >       select CRC32
> > +     select INET_LRO
>
> Yes, that's the correct fix.  ACK.

This bug still exists, though now it is in mainline. I just bisected
to it with this config[1], unless, of course randconfig is still
making bad configs.

Errors out with:
drivers/built-in.o: In function `myri10ge_poll':
myri10ge.c:(.text+0xce259): undefined reference to `lro_receive_frags'
myri10ge.c:(.text+0xce37c): undefined reference to `lro_flush_all'

It bisects back to this with this:
sbh@...peshifter /tmp/tester/linux-2.6 $ git-bisect bad
1e6e9342d41ff80ced0ad5dfcf084926700cdfc5 is first bad commit
commit 1e6e9342d41ff80ced0ad5dfcf084926700cdfc5
Author: Andrew Gallatin <gallatin@...i.com>
Date:   Mon Sep 17 11:37:42 2007 -0700

    [MYRI10GE]: Use LRO.

    Singed off by: Andrew Gallatin <gallatin@...i.com>
    Signed-off-by: David S. Miller <davem@...emloft.net>

This is with linux-2.6.git
master: 8d8fe64237646fdd2c2de2722ec4189a5999119d

[1] http://avuton.googlepages.com/undef-reference-lro_receive_frags.config
-- 
avuton
--
 Anyone who quotes me in their sig is an idiot. -- Rusty Russell.
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