JVM hangs beyond recovery

[Stas Oskin]

Hi.

I encountered the hang in latest jdk1.6.0_20 version.

I tried to get the threads dump, but both jstack and kill -3 didn't produce
any results.
Below is the GDB dump:
http://pastie.org/996680

Earlier in this thread I receive that possible cause is the dlsym function
in libdl library. I googled a bit for similar issues, and found only the
following potentially similar case:
http://www-01.ibm.com/support/docview.wss?uid=isg1IZ07615

I also received advices to:

* ReduceInitialCardMarks
or/and
* UseBiasedLocking

Which one of them may solve the issue, and what the possible results would
be?

Thanks in advance.
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