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Bug#519756: marked as done (Spammy "MD5 Hash NOT expected but found" messages)

Your message dated Tue, 23 Feb 2010 19:53:17 +0100
with message-id <20100223185317.GA3669@galadriel.inutil.org>
and subject line Re: Spammy "MD5 Hash NOT expected but found" messages
has caused the Debian Bug report #519756,
regarding Spammy "MD5 Hash NOT expected but found" messages
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
519756: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=519756
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: linux-image-2.6.26-1-686
Version: 2.6.26-13

While running rtorrent with one or more torrents open, I frequently get
kernel warnings like the following:

[288159.044121] MD5 Hash NOT expected but found (71.130.128.214,
65175)->(192.168.1.100, 16991)
[288160.767280] MD5 Hash NOT expected but found (71.130.128.214,
65175)->(192.168.1.100, 16991)
[288161.904441] MD5 Hash NOT expected but found (71.130.128.214,
65175)->(192.168.1.100, 16991)
[288163.080024] MD5 Hash NOT expected but found (71.130.128.214,
65175)->(192.168.1.100, 16991)
[288164.415410] MD5 Hash NOT expected but found (71.130.128.214,
65175)->(192.168.1.100, 16991)
[288165.906853] MD5 Hash NOT expected but found (71.130.128.214,
65175)->(192.168.1.100, 16991)
[288168.322260] __ratelimit: 1 messages suppressed

in bursts of about ten or so warnings at a time, every few minutes.  The
only apparent solution is to cut off connections from the offending
IP(s).  I don't think anything is actually breaking, but these warnings
can get really spammy and I'd like it if they could be cut down.

There has been some discussion on the kernel.org netdev mailing list
about how to deal with the MD5 hash problem more gracefully.  First
discussion is in this thread:
< http://kerneltrap.org/mailarchive/linux-netdev/2008/7/29/2734974/thread >

Adam Langley submitted a patch to remove the MD5 hash warnings entirely:
< http://kerneltrap.org/mailarchive/linux-netdev/2008/7/29/2736054 >
	David S. Miller submitted a patch to use MIB counters instead of
warnings:
< http://kerneltrap.org/mailarchive/linux-netdev/2008/7/30/2746014 >
	Please consider applying one of these two patches, or finding
another solution.

Kernel: Linux treehouse 2.6.26-1-686 #1 SMP Sat Jan 10 18:29:31 UTC 2009
i686 GNU/Linux
libc6 version: 2.9-4

--- End Message ---
--- Begin Message --- 
Version: 2.6.28-1

On Sat, Mar 14, 2009 at 09:41:23PM +0000, Matthew W. Miller wrote:
> Package: linux-image-2.6.26-1-686
> Version: 2.6.26-13
> 
> While running rtorrent with one or more torrents open, I frequently get
> kernel warnings like the following:
> 
> [288159.044121] MD5 Hash NOT expected but found (71.130.128.214,
> 65175)->(192.168.1.100, 16991)
> [288160.767280] MD5 Hash NOT expected but found (71.130.128.214,
> 65175)->(192.168.1.100, 16991)
> [288161.904441] MD5 Hash NOT expected but found (71.130.128.214,
> 65175)->(192.168.1.100, 16991)
> [288163.080024] MD5 Hash NOT expected but found (71.130.128.214,
> 65175)->(192.168.1.100, 16991)
> [288164.415410] MD5 Hash NOT expected but found (71.130.128.214,
> 65175)->(192.168.1.100, 16991)
> [288165.906853] MD5 Hash NOT expected but found (71.130.128.214,
> 65175)->(192.168.1.100, 16991)
> [288168.322260] __ratelimit: 1 messages suppressed
> 
> in bursts of about ten or so warnings at a time, every few minutes.  The
> only apparent solution is to cut off connections from the offending
> IP(s).  I don't think anything is actually breaking, but these warnings
> can get really spammy and I'd like it if they could be cut down.
> 
> There has been some discussion on the kernel.org netdev mailing list
> about how to deal with the MD5 hash problem more gracefully.  First
> discussion is in this thread:
> < http://kerneltrap.org/mailarchive/linux-netdev/2008/7/29/2734974/thread >
> 
> Adam Langley submitted a patch to remove the MD5 hash warnings entirely:
> < http://kerneltrap.org/mailarchive/linux-netdev/2008/7/29/2736054 >
> 	David S. Miller submitted a patch to use MIB counters instead of
> warnings:
> < http://kerneltrap.org/mailarchive/linux-netdev/2008/7/30/2746014 >
> 	Please consider applying one of these two patches, or finding
> another solution.

Sorry for the late reponse, we have a large backlog of bugs were're
working through. 

Marking as fixed in 2.6.28 for unstable.

Cheers,
        Moritz

--- End Message ---
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