segfault with 8u5

[Martin Traverso]

We're testing Presto (https://github.com/facebook/presto) on Java 8, and
ran into a segfault in the VM. Below is the relevant portion from the crash
report. You can see the full dump here:
https://gist.github.com/martint/364a12d4f776a6e54911

Stack: [0x00007fe8a1a6c000,0x00007fe8a1b6d000],
sp=0x00007fe8a1b6abe0,  free space=1018k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x3fd2f8]  ciSignature::ciSignature(ciKlass*, ciSymbol*,
ciMethodType*)+0x178
V  [libjvm.so+0x403ba7]  ciBytecodeStream::get_method(bool&,
ciSignature**)+0x4a7
V  [libjvm.so+0x332099]  GraphBuilder::invoke(Bytecodes::Code)+0x39
V  [libjvm.so+0x333b3d]  GraphBuilder::iterate_bytecodes_for_block(int)+0x6ad
V  [libjvm.so+0x330fa2]  GraphBuilder::iterate_all_blocks(bool)+0xf2
V  [libjvm.so+0x335a97]  GraphBuilder::GraphBuilder(Compilation*,
IRScope*)+0x517
V  [libjvm.so+0x33e337]  IRScope::IRScope(Compilation*, IRScope*, int,
ciMethod*, int, bool)+0x1e7
V  [libjvm.so+0x33e44f]  IR::IR(Compilation*, ciMethod*, int)+0x9f
V  [libjvm.so+0x31d74b]  Compilation::build_hir()+0xdb
V  [libjvm.so+0x31db0e]  Compilation::compile_java_method()+0x6e
V  [libjvm.so+0x31dc3e]  Compilation::compile_method()+0x4e
V  [libjvm.so+0x31df9f]  Compilation::Compilation(AbstractCompiler*,
ciEnv*, ciMethod*, int, BufferBlob*)+0x24f
V  [libjvm.so+0x31ed39]  Compiler::compile_method(ciEnv*, ciMethod*, int)+0xa9
V  [libjvm.so+0x46982a]
CompileBroker::invoke_compiler_on_method(CompileTask*)+0xc8a
V  [libjvm.so+0x46c230]  CompileBroker::compiler_thread_loop()+0x620
V  [libjvm.so+0x9e303f]  JavaThread::thread_main_inner()+0xdf
V  [libjvm.so+0x9e3205]  JavaThread::run()+0x1b5
V  [libjvm.so+0x8a00c8]  java_start(Thread*)+0x108


Is this a known issue? I couldn't find anything related in the bug
database. Otherwise, any suggestions for debugging it would be very much
appreciated!
The problem only seems to happen after Presto has been running for a while
and has processed several hundred queries. I’ve tried re-running the
queries that were running at the moment it crashed, but it does not
reproduce deterministically. Also, we don't see it in Java 7.

Thanks!

Martin
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