[uml-user] host with kernel 3.8 hangs completely after a while if an UML guest is started

[Toralf F. <tor...@gm...>]

If I use 3.8 or 3.8.1 as a host kernel and start an UML guest and wait
for 1/2 till 1 hour then I get a completely unusable system.
Neither any key works nor the magic Sys-Rq sequence then works anymore -
nothing is in the syslog nor any output is seen.

With kernel 3.7.10 as a host kernel this behaviour cannot be reproduced.

The system is a ThinkPad T420 with a stable Gentoo Linux 32 bit .

Any hints where to start - full bisecting would be a nightmare ?

-- 
MfG/Sincerely
Toralf Förster
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