linux-kernel - Re: [BUG] 2.6.23-rc3 can't see sd partitions on Alpha

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Date:	Fri, 7 Dec 2007 16:05:49 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Bob Tracy <rct@...s.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, mcree@...on.net.nz,
	linux-kernel@...r.kernel.org, rjw@...k.pl, rth@...ddle.net,
	ink@...assic.park.msu.ru, linux-scsi@...r.kernel.org,
	kay.sievers@...y.org, greg@...ah.com
Subject: Re: [BUG] 2.6.23-rc3 can't see sd partitions on Alpha


* Bob Tracy <rct@...s.com> wrote:

> > Current state of the source tree is the 6f37ac... version, so I'll 
> > start backing out the above diffs in related groups and continue 
> > until I've got a working kernel.  For lack of an obvious target, 
> > I'll start with the seemingly innocuous change to sysctl_check.c.  
> > I'll report back when I've got something.
> 
> That was quick :-).  Backing out the sysctl_check.c diff gives me a 
> working kernel.  Beats the #$%@! out of me how/why, though.
> 
> Michael Cree: could you try backing out the diff below from your 
> 2.6.24-rc3 tree and see if things are now working for you?
> 
> Here's "uname -a", just to confirm (maybe) I'm running on what I say 
> works:
> 
> Linux smirkin 2.6.24-rc2-g6f37ac79-dirty #2 Fri Dec 7 08:03:12 CST 2007 alpha
> 
> Here's the diff I backed out (patch -R).  It's short...
> 
> diff --git a/kernel/sysctl_check.c b/kernel/sysctl_check.c
> index 5a2f2b2..4abc6d2 100644
> --- a/kernel/sysctl_check.c
> +++ b/kernel/sysctl_check.c
> @@ -738,7 +738,7 @@ static struct trans_ctl_table trans_net_table[] = {
>  	{ NET_ROSE,		"rose",		trans_net_rose_table },
>  	{ NET_IPV6,		"ipv6",		trans_net_ipv6_table },
>  	{ NET_X25,		"x25",		trans_net_x25_table },
> -	{ NET_TR,		"tr",		trans_net_tr_table },
> +	{ NET_TR,		"token-ring",	trans_net_tr_table },
>  	{ NET_DECNET,		"decnet",	trans_net_decnet_table },
>  	/*  NET_ECONET not used */
>  	{ NET_SCTP,		"sctp",		trans_net_sctp_table },

reverting this makes the kernel image shorter by 8 bytes - so perhaps 
some alignment issue somewhere? Or something gets overflown? Does any of 
this get actually used by your bootup?

	Ingo
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