Ran NMT tests on Linux i586 with client VM and the following tests:

runtime/NMT/BaselineWithParameter.java
runtime/NMT/JcmdBaselineDetail.java
runtime/NMT/JcmdScale.java
runtime/NMT/JcmdScaleDetail.java
runtime/NMT/ShutdownTwice.java
runtime/NMT/SummaryAfterShutdown.java

hit the following assert:

# Internal Error (/opt/jprt/T/P1/160847.ctornqvi/s/src/share/vm/services/virtualMemoryTracker.cpp:332), pid=2359, tid=1451232144
# Error: ShouldNotReachHere()

Stack:

V [libjvm.so+0xa9c128] VMError::report_and_die()+0x198
V [libjvm.so+0x3c771a] report_should_not_reach_here(char const*, int)+0x7a
V [libjvm.so+0xa8e8c4] VirtualMemoryTracker::add_reserved_region(unsigned char*, unsigned int, NativeCallStack const&, MemoryType, bool)+0x144
V [libjvm.so+0x8a8540] os::map_memory(int, char const*, unsigned int, char*, unsigned int, bool, bool)+0x100
V [libjvm.so+0x419f71] FileMapInfo::map_region(int)+0x61
V [libjvm.so+0x81641a] MetaspaceShared::map_shared_spaces(FileMapInfo*)+0x4a
V [libjvm.so+0x8136a8] Metaspace::global_initialize()+0x428
V [libjvm.so+0xa5171d] universe_init()+0x5d
V [libjvm.so+0x4fc441] init_globals()+0x61
V [libjvm.so+0xa345c4] Threads::create_vm(JavaVMInitArgs*, bool*)+0x224
V [libjvm.so+0x647218] JNI_CreateJavaVM+0x88
C [libjli.so+0x5edd] JavaMain+0x8d
C [libpthread.so.0+0x632f] start_thread+0xbf
C [libc.so.6+0xde20e] clone+0x5e