Hangs with pre7 and pre8

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Hi,

When running a certain perl program (genindx from the LXR program), pre7
and pre8 have a nasty hang. The situation is 100% reproducable, it even
fails while indexing the same file.

As a result of the hang, programs such as "top" and "ps" become stuck in
"D" state. (according to /proc/XXX/status). When I do a
"cat /proc/PID_OF_GENINDX/status" the "cat" also becomes "D".

Pre7-4 didn't have this behavior, neither did pre6 or before.

I'm out of ideas to debug this thing, so if anyone has a good suggestion,
please let me know.

Greetings,
   Arjan van de Ven

PS:
It is a BP6 machine, but I doubt hardware has anything to do with it as
the problem is 100% reproducable.

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