netdev - Re: 2.6.31-rc5-git2 crash [net/core/flow.c:flow_cache_new

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Date:	Fri, 07 Aug 2009 08:23:05 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	michael@...erman.id.au
Cc:	Sachin Sant <sachinp@...ibm.com>, netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>, linuxppc-dev@...abs.org
Subject: Re: 2.6.31-rc5-git2 crash [net/core/flow.c:flow_cache_new_hashrnd]

On Wed, 2009-08-05 at 00:15 +1000, Michael Ellerman wrote:

> > c000000000600000  00001010      .long 0x1010
> > 0:mon>
> > c000000000600004  00000008      .long 0x8
> > c000000000600008  00001013      .long 0x1013
> > c00000000060000c  0000000f      .long 0xf
> > c000000000600010  7961626f      rldimi. r1,r11,44,41
> > c000000000600014  6f740000      xoris   r20,r27,0
> > c000000000600018  00101600      .long 0x101600
> > c00000000060001c  00000c00      .long 0xc00
> > c000000000600020  00000400      .long 0x400
> > c000000000600024  00101100      .long 0x101100
> > c000000000600028  000008e9      .long 0x8e9

BTW. Corruption looks like bi_recs... ie, broken yaboot. This was fixed
recently, yaboot would eventually crap over the kernel for certain sizes
of the kernel image.

0x1010 = BI_FIRST
0x1013 = BI_BOOTLOADER_ID followed by 0x7961626f6f74 which is
"yaboot" :-)
0x1016 = BI_MACHTYPE

etc...

Cheers,
Ben.

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