Crash observed with G1 GC during concurrent marking with the following stack traces:
--------------------------------------------------------------------
java 8u144-b32 on Oracle linux 6 64-bit
gc: G1 is used

hs_err_pid21397.log stack trace:
Stack: [0x00007f74fc69f000,0x00007f74fc7a0000], sp=0x00007f74fc79ea70, free
space=1022k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
code)
V [libjvm.so+0x46cfaf] ClassLoaderData::oops_do(OopClosure*, KlassClosure*,
bool)+0x8f
V [libjvm.so+0x65b310] InstanceMirrorKlass::oop_oop_iterate_nv(oopDesc*,
G1CMOopClosure*)+0x40
V [libjvm.so+0x4cf034] CMBitMapClosure::do_bit(unsigned long)+0x74
V [libjvm.so+0x4c871e] CMTask::do_marking_step(double, bool, bool)+0xa9e
V [libjvm.so+0x4cf7bd] CMConcurrentMarkingTask::work(unsigned int)+0xdd
V [libjvm.so+0xaee2ff] GangWorker::loop()+0xcf
V [libjvm.so+0x92b5c8] java_start(Thread*)+0x108

hs_err_pid23461.log
Stack: [0x00007fcc6c341000,0x00007fcc6c442000], sp=0x00007fcc6c440a10, free
space=1022k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
code)
V [libjvm.so+0x4cbd06] oopDesc::size()+0x56
V [libjvm.so+0x4cdc60] CMTask::make_reference_grey(oopDesc*,
HeapRegion*)+0xc0
V [libjvm.so+0x46cfd7] ClassLoaderData::oops_do(OopClosure*, KlassClosure*,
bool)+0xb7
V [libjvm.so+0x65b310] InstanceMirrorKlass::oop_oop_iterate_nv(oopDesc*,
G1CMOopClosure*)+0x40
V [libjvm.so+0x4cf034] CMBitMapClosure::do_bit(unsigned long)+0x74
V [libjvm.so+0x4c871e] CMTask::do_marking_step(double, bool, bool)+0xa9e
V [libjvm.so+0x4cf973] CMConcurrentMarkingTask::work(unsigned int)+0x293
V [libjvm.so+0xaee2ff] GangWorker::loop()+0xcf
V [libjvm.so+0x92b5c8] java_start(Thread*)+0x108