EVALUATION

http://hg.openjdk.java.net/lambda/lambda/hotspot/rev/b20d64f83668
                                     

EVALUATION

See main CR
                                     

EVALUATION

http://hg.openjdk.java.net/hsx/hotspot-emb/hotspot/rev/b20d64f83668
                                     

EVALUATION

http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/b20d64f83668
                                     

EVALUATION

http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/b20d64f83668
                                     

EVALUATION

Adding an assert into AbstractInterpreter::layout_activation and running on Linux with:

$ JAVA_OPTS="-d64 -server -XX:-PrintVMOptions -XX:+DeoptimizeALot" ant run-junit-precompiled

results in:

    [junit] #  Internal Error (/home/ct232829/hsx/hotspot-comp/7090904/src/cpu/x86/vm/templateInterpreter_x86_64.cpp:1626), pid=28522, tid=139933906372368
    [junit] #  assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset) failed: bad placement

for a couple of JRuby tests e.g.:

testJRUBY3155.rb
testLoops.rb
testVisibility.rb
testYAML.rb
test_block.rb
test_caller.rb
test_crazy_blocks.rb
test_methods.rb
test_random.rb
test_proc_visibility.rb
test_require_once.rb
test_super_call_site_caching.rb
test_thread.rb
test_threaded_nonlocal_return.rb
                                     

EVALUATION

I could only reproduce the crash on linux-x64.  It happens with and without compressed oops, both UseSerialGC and UseParallelGC, and 7-b147 and latest 7u2-b07.

UseSerialGC:

Stack: [0x00007fd0a56f6000,0x00007fd0a57f7000],  sp=0x00007fd0a57f4f10,  free space=1019k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x3e4b74]  FastScanClosure::do_oop(oopDesc**)+0x24
V  [libjvm.so+0x44cfa9]  frame::oops_interpreted_do(OopClosure*, RegisterMap const*, bool)+0xc9
V  [libjvm.so+0x800eba]  JavaThread::oops_do(OopClosure*, CodeBlobClosure*)+0x15a
V  [libjvm.so+0x7fd4b2]  Threads::oops_do(OopClosure*, CodeBlobClosure*)+0x32
V  [libjvm.so+0x7732c3]  SharedHeap::process_strong_roots(bool, bool, SharedHeap::ScanningOption, OopClosure*, CodeBlobClosure*, OopsInGenClosure*)+0x1a3
V  [libjvm.so+0x4836c4]  GenCollectedHeap::gen_process_strong_roots(int, bool, bool, bool, SharedHeap::ScanningOption, OopsInGenClosure*, bool, OopsInGenClosure*)+0x74
V  [libjvm.so+0x3e5f29]  DefNewGeneration::collect(bool, bool, unsigned long, bool)+0x289
V  [libjvm.so+0x485c62]  GenCollectedHeap::do_collection(bool, bool, unsigned long, bool, int)+0x672
V  [libjvm.so+0x37c20e]  GenCollectorPolicy::satisfy_failed_allocation(unsigned long, bool)+0xce
V  [libjvm.so+0x843964]  VM_GenCollectForAllocation::doit()+0x94
V  [libjvm.so+0x849c2c]  VM_Operation::evaluate()+0x4c
V  [libjvm.so+0x848710]  VMThread::evaluate_operation(VM_Operation*)+0x80
V  [libjvm.so+0x848c51]  VMThread::loop()+0x1a1
V  [libjvm.so+0x8492d0]  VMThread::run()+0x70
V  [libjvm.so+0x6edf80]  java_start(Thread*)+0x100

UseParallelGC:

Stack: [0x00007ff2b5c26000,0x00007ff2b5d27000],  sp=0x00007ff2b5d25710,  free space=1021k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x74d378]  PSScavengeRootsClosure::do_oop(oopDesc**)+0x28
V  [libjvm.so+0x44cfa9]  frame::oops_interpreted_do(OopClosure*, RegisterMap const*, bool)+0xc9
V  [libjvm.so+0x800eba]  JavaThread::oops_do(OopClosure*, CodeBlobClosure*)+0x15a
V  [libjvm.so+0x74d5f5]  ThreadRootsTask::do_it(GCTaskManager*, unsigned int)+0x75
V  [libjvm.so+0x47ad30]  GCTaskThread::run()+0xf0
V  [libjvm.so+0x6edf80]  java_start(Thread*)+0x100
                                     

EVALUATION

Running with +VerifyBeforeGC results in:

    [junit] junit.framework.TestListener: startTest(testLoops.rb)
    [junit]  VerifyBeforeGC:[Verifying threads #
    [junit] # A fatal error has been detected by the Java Runtime Environment:
    [junit] #
    [junit] #  Internal Error (genOopClosures.hpp:178), pid=22395, tid=140629082933008
    [junit] #  guarantee(obj->is_oop_or_null()) failed: invalid oop: 0x0000000000000001