netdev - Re: [PATCH] tproxy: nf_tproxy_assign

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Message-ID: <1278837419.2538.131.camel@edumazet-laptop>
Date:	Sun, 11 Jul 2010 10:36:59 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	felipewd@...il.com, kaber@...sh.net, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] tproxy: nf_tproxy_assign_sock() can handle tw sockets

Le samedi 10 juillet 2010 à 12:30 -0700, David Miller a écrit :
> From: Eric Dumazet <eric.dumazet@...il.com>
> Date: Sat, 10 Jul 2010 08:17:29 +0200
> 
> > Strange thing with your crash report is CR2 value, with unexpected value
> > of 000000000b388000 while RAX value is dce8dce85d415d41
> > 
> > Faulting instruction is :
> > 
> > 48 83 b8 b0 00 00 00 00   cmpq   $0x0,0xb0(%rax)
> > 
> > So I would have expected CR2 being RAX+0xb0, but its not.
> 
> It could be corruption from elsewhere.  Those last four hex
> digits (0x5d415d41) are "]A]A" in ascii, but that could just
> be coincidence.
> 

x86 being litle endian, string is "A]A]" followed by another "XYXY"
pattern (non ASCII chars : 0xE8, 0xDC, 0xE8, 0xDC, "èÜèÜ" in ISO8859)



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