netdev - Re: [PATCH net] ipv6: don't stop backtracking in fib6_lookup

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Date:	Fri, 9 Aug 2013 16:19:39 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Teco Boot <teco@...-net.nl>
Cc:	netdev@...r.kernel.org, yoshfuji@...ux-ipv6.org,
	equinox@...c24.net, boutier@....univ-paris-diderot.fr
Subject: Re: [PATCH net] ipv6: don't stop backtracking in fib6_lookup_1 if subtree does not match

On Fri, Aug 09, 2013 at 04:12:20PM +0200, Teco Boot wrote:
> Double checked, it works. Tested with Common Open Research Emulator (CORE, from NRL).
> 
> === But ===
> 
> I had some problems with CORE. Could be me, new kernel version, the patch, CORE using network namespaces, or combination of that. sudo hangs, reboot hangs, ip address show hangs.
> With ps -ef, I see some suspected items:
> root      4858  4161  0 15:57 ?        00:00:00 /sbin/ip -6 addr flush dev eth0
> root      4859     2  0 15:57 ?        00:00:00 [kworker/0:3]
> In the emulation I use, there was no IPv6.
> 
> I'll try to figure out if it is CORE & netns in combination with patch. Or just the patch. Or just the new kernel.
> Just to speed up, any idea where to look for?

echo t > /proc/sysrq-trigger and check dmesg while the system hangs. Maybe you
have to use a serial console and send the sysrq over keyboard/break.

Greetings,

  Hannes

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