netdev - Re: [PATCH/RFC] ipv6: fib: Drop cached routes with dead neighbours on fib GC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 11 Jan 2013 14:40:58 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Roland Dreier <roland@...nel.org>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Roland Dreier <roland@...estorage.com>
Subject: Re: [PATCH/RFC] ipv6: fib: Drop cached routes with dead neighbours on fib GC

On Wed, Jan 09, 2013 at 09:44:19AM -0800, Roland Dreier wrote:
> From: Roland Dreier <roland@...estorage.com>
> 
> This patch is as much bug report as it is a proposal to merge this
> specific patch.  The problem is definitely real; we hit it in a
> situation where we have two systems connected back-to-back with two
> bonded links between them, one system reboots, and the other system
> gets NETDEV_CHANGEADDR.  This patch definitely fixes that case for us,
> but I'm not sure it's the right place to fix this, or if it covers all
> the cases where this could happen.  Anyway...

Great analysis, thanks!

There is bug report which indicates a fix to this problem could
also solve some other corner cases regarding neighbour discovery:
https://bugzilla.kernel.org/show_bug.cgi?id=42991

I will try to reproduce it at the weekend.

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html