[Planetlab-devel] Kernel panic "Spurious ACK"

[Rob Sherwood]

Just a little bit more info here:

It seems (from our side at least) that a single packet (granted, likely some
how badly formed packet) caused all of the PL machines on our network to
kernel panic(!!).

I asked Srini to forward the screen shot on to you all, FYI.

Srini, can you be more specific what the packet was?  Was it just a generic
TCP SYNACK packet or was it something more broken?

- Rob
.


On Tue, Oct 26, 2010 at 1:30 PM, Srini Seetharaman <seethara at stanford.edu>wrote:

> Hi
> We had some network badness caused by a demo, which caused 6 MyPLC PL
> nodes (2 at Stanford, 2 at Clemson and 2 at Wisconsin) to go down.
> Attached is the screenshot on 1 of the them. I confirmed from everyone
> else that the error was the same in their nodes too. Hopefully this
> shudn't happen again. Any clue what caused it?
>
> Thanks
> Srini.
>
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