review for 7088020: SEGV in JNIHandleBlock::release_block

Tom Rodriguez tom.rodriguez at
Wed Sep 7 15:44:56 PDT 2011

On Sep 7, 2011, at 2:24 PM, Vladimir Kozlov wrote:

> Where r12 is restored? It contains coop base.

I forgot to add the reinit_heapbase call.  I've updated the webrev.  Surprisingly my tests didn't crash.  I ran some more tests and found a problem with stack walking for throw_NullPointerException_at_call.  I'm looking into it.


> Vladimir
> Tom Rodriguez wrote:
>> 150 lines changed: 88 ins; 50 del; 12 mod; 10143 unchg
>> 7088020: SEGV in JNIHandleBlock::release_block
>> Reviewed-by:
>> The throw_WrongMethodTypeException stub on x64 needs to align the
>> stack before calling into the runtime or it might crash.  I also
>> noticed that two stubs were dead which made an extra argument dead so
>> I cleaned that up at the same time.  Tested on linux-amd64 with new
>> regression test and failing tests from report.

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