ACCESS_VIOLATION in InstanceKlass::oop_ms_follow_contents()

Nightly failure:

Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [jvm.dll+0x48d9df] InstanceKlass::oop_ms_follow_contents+0x3f;; ?oop_ms_follow_contents@InstanceKlass@@UAEXPAVoopDesc@@@Z+0x3f
V [jvm.dll+0x48d4c2] MarkSweep::follow_stack+0xa2;; ?follow_stack@MarkSweep@@SAXXZ+0xa2
V [jvm.dll+0x27ca1c] JavaThread::oops_do+0x6c;; ?oops_do@JavaThread@@UAEXPAVOopClosure@@PAVCLDClosure@@PAVCodeBlobClosure@@@Z+0x6c
V [jvm.dll+0x27d085] Threads::possibly_parallel_oops_do+0x45;; ?possibly_parallel_oops_do@Threads@@SAX_NPAVOopClosure@@PAVCLDClosure@@PAVCodeBlobClosure@@@Z+0x45
V [jvm.dll+0x452582] G1RootProcessor::process_strong_roots+0x62;; ?process_strong_roots@G1RootProcessor@@QAEXPAVOopClosure@@PAVCLDClosure@@PAVCodeBlobClosure@@@Z+0x62
V [jvm.dll+0x4398af] G1MarkSweep::mark_sweep_phase1+0x9f;; ?mark_sweep_phase1@G1MarkSweep@@CAXAA_N_N@Z+0x9f
V [jvm.dll+0x43978c] G1MarkSweep::invoke_at_safepoint+0x11c;; ?invoke_at_safepoint@G1MarkSweep@@SAXPAVReferenceProcessor@@_N@Z+0x11c
V [jvm.dll+0x422b39] G1CollectedHeap::do_collection+0x5e9;; ?do_collection@G1CollectedHeap@@IAE_N_N0I@Z+0x5e9
V [jvm.dll+0x4241df] G1CollectedHeap::do_full_collection+0xf;; ?do_full_collection@G1CollectedHeap@@MAEX_N@Z+0xf
V [jvm.dll+0x461d69] VM_G1CollectFull::doit+0x29;; ?doit@VM_G1CollectFull@@UAEXXZ+0x29
V [jvm.dll+0x2879d3] VM_Operation::evaluate+0x73;; ?evaluate@VM_Operation@@QAEXXZ+0x73
V [jvm.dll+0x285910] VMThread::evaluate_operation+0xe0;; ?evaluate_operation@VMThread@@AAEXPAVVM_Operation@@@Z+0xe0
V [jvm.dll+0x2861e5] VMThread::loop+0x3c5;; ?loop@VMThread@@QAEXXZ+0x3c5
V [jvm.dll+0x2867b4] VMThread::run+0xb4;; ?run@VMThread@@UAEXXZ+0xb4