7090802: segfault in GraphBuilder [Was: Re: JVM segfault]
roland.westrelin at oracle.com
Tue Feb 14 09:26:44 PST 2012
>> I've been able to make the JVM segfault fairly reliably when using TieredCompilation. I reported this as bugid 7090802.
>> # Problematic frame:
>> # V [libjvm.so+0x1aa058][thread -1705837712 also had an error]
>> GraphBuilder::GraphBuilder(Compilation*, IRScope*)+0x378
>> I haven't been able to have a bullet proof way to make this fail. However, starting Intellij so that it has to re-index the source code base seems to work reliably. It fails on a single CPU virtualbox instance, dual cpu, 8 cpu and 16cpu systems. It's failing on Ubuntu, Suse 11.2 and 11.4 systems.
>> This isn't that big of a deal as I just turn off TieredCompilation. I'm taking the time to point this problem out though as I think TieredCompilation is great and want to see it be bullet proof. I have never had an issue using either the server or client compiler without TieredCompilation. I have also tried tweaking Tier2CompileTheshold up to 50000 and that didn't seem to make a difference either. With PrintCompilation enabled I can see that it's failing after about 14000 methods are compiled with the C1 compiler.
>> So, my apologies for posting this here. How can I help resolve this issue?
> The bug is currently in "Incomplete" state and marked as "Need More Info". I guess this is because of a missing test case to reproduce the problem. And it's not filed against compiler1 category (which I think it should be).
It looks like a duplicate of 7126041 that I got reviewed yesterday and will push shortly.
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