Re: 1.9.3 crashes on network mode

Here is what I was able to capture (actually I have the whole session from
beginning until it crashes). From what I can tell, at some point the client
starts sending a lot of packets with 0 size window which eventually makes
the server die and the connection gets reset... I was not able to see (yet)
why the client started sending zero-size window though...

(IPs are masked as they are not really relevant)

3746.744354 x.x.x.248 -> x.x.x.24 TCP 27273 > 3514 [PSH, ACK] Seq=73965
Ack=5854 Win=32160 Len=50
3746.878504 x.x.x.24 -> x.x.x.248 TCP 3514 > 27273 [ACK] Seq=5854 Ack=74015
Win=182 Len=0
3746.878552 x.x.x.248 -> x.x.x.24 TCP 27273 > 3514 [PSH, ACK] Seq=74015
Ack=5854 Win=32160 Len=182
3747.079669 x.x.x.24 -> x.x.x.248 TCP [TCP ZeroWindow] 3514 > 27273 [ACK]
Seq=5854 Ack=74197 Win=0 Len=0
3748.141102 x.x.x.248 -> x.x.x.24 TCP [TCP Keep-Alive] 27273 > 3514 [ACK]
Seq=74196 Ack=5854 Win=32160 Len=0
3748.141376 x.x.x.24 -> x.x.x.248 TCP [TCP ZeroWindow] 3514 > 27273 [ACK]
Seq=5854 Ack=74197 Win=0 Len=0
3748.941098 x.x.x.248 -> x.x.x.24 TCP [TCP Keep-Alive] 27273 > 3514 [ACK]
Seq=74196 Ack=5854 Win=32160 Len=0
3748.941315 x.x.x.24 -> x.x.x.248 TCP [TCP ZeroWindow] 3514 > 27273 [ACK]
Seq=5854 Ack=74197 Win=0 Len=0
...
7441.879854 x.x.x.248 -> x.x.x.24 TCP [TCP Keep-Alive] 27273 > 3514 [ACK]
Seq=74196 Ack=5854 Win=32160 Len=0
7441.880083 x.x.x.24 -> x.x.x.248 TCP [TCP ZeroWindow] 3514 > 27273 [ACK]
Seq=5854 Ack=74197 Win=0 Len=0
7482.824497 x.x.x.24 -> x.x.x.248 TCP [TCP ZeroWindow] 3514 > 27273 [PSH,
ACK] Seq=5854 Ack=74197 Win=0 Len=50
7482.824536 x.x.x.248 -> x.x.x.24 TCP 27273 > 3514 [RST] Seq=74197 Win=0
Len=0

At that point both client (x.x.x.24) and server (x.x.x.248) died!

Ideas?

On Tue, Apr 12, 2011 at 12:33 PM, Luis M <[email protected]> wrote:

> Using Ubuntu as server and Windows XP as client (and synergy) the Linux
> service of workrave crashes every now and then for no apparent reason.
>
> How do I go about troubleshooting this?
>
> I'll start collecting a network dump and submit the details to this thread.
>
> It's worth noting that this is Ubuntu stable (10.10) and workrave has been
> backported from the source package of upcoming Ubuntu 11.04 by myself.
>
> Regards,
>
> --
> A bug magnet




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Luis Mondesi
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