Repeatable hard hang on OpenBSD3.6 MP?

[stephen_(_dot_)_marley_(_at_)_cl-is_(_dot_)_com]

Hi

It seems I can hang my 3.6-stable MP box at will just by backgrounding an 
ssh command using shell job control.

The command is just : ssh foo 'tar czf - /'  > bar.tgz 

If I stop the job (^Z) and bg it, press <CR> a few times, the machine 
hangs hard and needs a forced reset. 

I have managed to repeat this behaviour several times with the MP kernel 
(original and with Markus Friedl's patch from thread below) but not the SP 
kernel. Anyone else with an MP box else get the same behaviour?

See http://marc.theaimsgroup.com/?l=openbsd-tech&m=110080110616826&w=2 for 
my dmesg (it's a dual proc i386).

Here's the output in putty the last time it hung:

smarley_(_at_)_catwoman ~ % ssh root_(_at_)_proxy1 'tar czf - /' > bar.tgz
tar: Removing leading `/' from member names
^Zzsh: 10882 suspended  ssh root_(_at_)_proxy1 'tar czf - /' > bar.tgz
smarley_(_at_)_catwoman ~ % bg
[1]  + continued  ssh root_(_at_)_proxy1 'tar czf - /' > bar.tgz
smarley_(_at_)_catwoman ~ %
smarley_(_at_)_catwoman ~ %
smarley_(_at_)_catwoman ~ %
smarley_(_at_)_catwoman ~ %
[dead]

Kind Regards,
Stephen Marley

-- 
Network Systems Engineer, Datacentre Operations
Campbell Lee Internet Solutions Ltd, 24 Finlas St, Glasgow, G22 5DT, UK
<support_(_at_)_cl-is_(_dot_)_com>  t.+44(0)141 557 6440  f.+44(0)141 557 6451

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