Re: Every other char with LOG netfilter output (bug?)

[Patrick McHardy <kaber@trash.net>]

Dâniel Fraga wrote:
> 	Since Linux kernel 2.6.25, I get stalled connections and when it happens, I have this on the log:
> 
> Oct 28 13:39:22 tux vmunix: 1:3e:79:01:fe:b2:80 R=9.6.. S=9.6.. E=9
> O=x0PE=x0TL6 D410POOUPST10 P=41 E=7
> 
> 	It seems that are missing chars here.
> 
> 	A bug?

Seems likely. Is that an SMP machine? Its possible that the ringbuffer
simply overflows before the logging daemon gets a chance to capture it,
but that should only cause truncated lines.

What do your logging rules that might be responsible for this look like?

> 	Ps: in fact this issue seems to be much more complex than this. There's a huge thread we 
> talked about those stalled connections, but we are unable to discover what causes this, so I opened 
> this bug report:
> 
> http://bugzilla.kernel.org/show_bug.cgi?id=11588
> 
> 	At least if netfilter developers could figure it out why the above log line happens, maybe we 
> could trace this bug and solve it.

I can't see anything in that report that would ring a bell.
Are you using any of the more unusual networking features,
like QoS, policy routing etc?

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