The following test failed in the jdk/jdk CI:

runtime/RedefineTests/RedefineRunningMethods.java

due to this assertion failure:

# Internal Error (<path>/open/src/hotspot/share/classfile/javaClasses.cpp:1477), pid=31888, tid=32639
# assert(oopDesc::equals(java_class, Universe::void_mirror())) failed: only valid non-array primitive

Here's the crashing stack trace:

--------------- T H R E A D ---------------

Current thread (0x00007f4950011800): GCTaskThread "ParGC Thread#3" [stack: 0x00007f4955345000,0x00007f4955445000] [id=32639]

Stack: [0x00007f4955345000,0x00007f4955445000], sp=0x00007f4955443540, free space=1017k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x18a7a3f] VMError::report_and_die(int, char const*, char const*, __va_list_tag*, Thread*, unsigned char*, void*, void*, char const*, int, unsigned long)+0x25f
V [libjvm.so+0x18a885f] VMError::report_and_die(Thread*, void*, char const*, int, char const*, char const*, __va_list_tag*)+0x2f
V [libjvm.so+0xb2b010] report_vm_error(char const*, int, char const*, char const*, ...)+0x100
V [libjvm.so+0xef462f] java_lang_Class::primitive_type(oop)+0x2ef
V [libjvm.so+0xe8f1c8] InstanceKlass::oop_print_value_on(oop, outputStream*)+0x2c8
V [libjvm.so+0x14b8cfd] oopDesc::print_value_on(outputStream*) const+0xfd
V [libjvm.so+0x1469329] DetectScavengeRoot::do_oop(oop*)+0xf9
V [libjvm.so+0x145c8c1] nmethod::oops_do(OopClosure*, bool)+0x231
V [libjvm.so+0x145cc36] nmethod::detect_scavenge_root_oops()+0x26
V [libjvm.so+0xa280f0] CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure*)+0x260
V [libjvm.so+0x15ff3c5] ScavengeRootsTask::do_it(GCTaskManager*, unsigned int)+0xf5
V [libjvm.so+0xda6e63] GCTaskThread::run()+0x2a3
V [libjvm.so+0x14f3f30] thread_native_entry(Thread*)+0x100


The test is in a Runtime directory, but it exercises class
redefinition which is a Serviceability technology. The
stack trace clearly shows we crashed in GC code...
I'm starting this one off in hotspot/gc for initial triage.

While I'm finding other failures for this test, I'm not finding
failures with this specific assertion so I'm tagging this one
as a regression and a promotion_blocker to start with.