F8 Treason Uncloaked

[Chris Bredesen]

Alan Cox wrote:
> On Tue, 06 May 2008 14:38:23 -0400
> Chris Bredesen <cbredesen at redhat.com> wrote:
> 
>> Hello list,
>>
>> I'm trying to get this issue out to a wider audience.  I posted it on 
>> the forum but got no responses:
>>
>> http://www.fedoraforum.org/forum/showthread.php?t=186331
>>
>> Sorry to cross post, but I'm not sure where else to turn...
> 
> netdev at linux.kernel.org
> 
> but the TCP messages really indicate either a Linux bug or that the NAS
> isn't talking proper TCP. Trying turning off window scaling was a good
> test but beyond that tcpdump data will be needed.

Thanks, Alan.

Not sure how verbose the tcpdump info should be.  This is the first time 
I've captured any of its output and most of it looks the same, but the 
last relevant line is indeed a RST from the rsync client.  I grepped the 
output on 'rsync' and removed full hostnames.  Does this look useful? 
If so, I'll ping the kernel.org list:

20:07:54.110206 IP nas.rsync > 192.168.1.130.59478: P 133563:134259(696) 
ack 23895075 win 65535 <nop,nop,timestamp 154457749 410773>
20:07:54.110270 IP 192.168.1.130.59478 > nas.rsync: . 
23895075:23897971(2896) ack 133563 win 0 <nop,nop,timestamp 438930 
154457749>
20:07:54.110508 IP nas.rsync > 192.168.1.130.59478: . ack 23896523 win 
65535 <nop,nop,timestamp 154457749 438930>
20:07:54.110569 IP nas.rsync > 192.168.1.130.59478: . ack 23897971 win 
65535 <nop,nop,timestamp 154457749 438930>
20:08:40.443934 IP 192.168.1.130.59478 > nas.rsync: . 
23895075:23896523(1448) ack 133563 win 0 <nop,nop,timestamp 485264 
154457749>
20:08:40.444193 IP nas.rsync > 192.168.1.130.59478: . ack 23897971 win 
65535 <nop,nop,timestamp 154462382 438930,nop,nop,sack 1 
{23895075:23896523}>
20:08:50.423473 IP nas.rsync > 192.168.1.130.59478: P 133563:134259(696) 
ack 23897971 win 65535 <nop,nop,timestamp 154463381 438930>
20:08:50.423547 IP 192.168.1.130.59478 > nas.rsync: . 
23897971:23900867(2896) ack 133563 win 0 <nop,nop,timestamp 495243 
154463381>
20:08:50.423788 IP nas.rsync > 192.168.1.130.59478: . ack 23899419 win 
65535 <nop,nop,timestamp 154463381 495243>
20:08:50.423880 IP nas.rsync > 192.168.1.130.59478: . ack 23900867 win 
65535 <nop,nop,timestamp 154463381 495243>
20:10:23.074965 IP 192.168.1.130.59478 > nas.rsync: . 
23897971:23899419(1448) ack 133563 win 0 <nop,nop,timestamp 587895 
154463381>
20:10:23.075198 IP nas.rsync > 192.168.1.130.59478: . ack 23900867 win 
65535 <nop,nop,timestamp 154472647 495243,nop,nop,sack 1 
{23897971:23899419}>
20:12:23.074935 IP 192.168.1.130.59478 > nas.rsync: . 
23897971:23899419(1448) ack 133563 win 0 <nop,nop,timestamp 707895 
154463381>
20:12:23.078088 IP nas.rsync > 192.168.1.130.59478: R 
3677113829:3677113829(0) win 0

-Chris