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8364314: java_lang_Thread::get_thread_status fails assert(base != nullptr) failed: Invalid base #26544

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8364314: java_lang_Thread::get_thread_status fails assert(base != nullptr) failed: Invalid base #26544

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8364314: java_lang_Thread::get_thread_status fails assert(base != nul…
dholmes-ora Jul 30, 2025
6366410
Merge branch 'master' into 8364314-threadSMR
dholmes-ora Jul 30, 2025
610186f
Remove from ProblemList
dholmes-ora Jul 30, 2025
96f9298
Comments from Dan
dholmes-ora Aug 3, 2025
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12 changes: 11 additions & 1 deletion src/hotspot/share/services/threadService.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1278,6 +1278,7 @@ class GetThreadSnapshotHandshakeClosure: public HandshakeClosure {
if (is_virtual) {
// mounted vthread, use carrier thread state
oop carrier_thread = java_lang_VirtualThread::carrier_thread(_thread_h());
assert(carrier_thread != nullptr, "should only get here for a mounted vthread");
_thread_status = java_lang_Thread::get_thread_status(carrier_thread);
} else {
_thread_status = java_lang_Thread::get_thread_status(_thread_h());
Expand Down Expand Up @@ -1477,7 +1478,17 @@ oop ThreadSnapshotFactory::get_thread_snapshot(jobject jthread, TRAPS) {

carrier_thread = Handle(THREAD, java_lang_VirtualThread::carrier_thread(thread_h()));
if (carrier_thread != nullptr) {
// Note: The java_thread associated with this carrier_thread may not be
// protected by the ThreadsListHandle above. There could have been an
// unmount and remount after the ThreadsListHandle above was created
// and before the JvmtiVTMSTransitionDisabler was created. However, as
// we have disabled transitions, if we are mounted on it, then it cannot
// terminate and so is safe to handshake with.
java_thread = java_lang_Thread::thread(carrier_thread());
} else {
// We may have previously found a carrier but the virtual thread has unmounted
// after that, so clear that previous reference.
java_thread = nullptr;
}
} else {
java_thread = java_lang_Thread::thread(thread_h());
Expand Down Expand Up @@ -1554,4 +1565,3 @@ oop ThreadSnapshotFactory::get_thread_snapshot(jobject jthread, TRAPS) {
}

#endif // INCLUDE_JVMTI

2 changes: 0 additions & 2 deletions test/jdk/ProblemList.txt
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Expand Up @@ -554,8 +554,6 @@ java/io/IO/IO.java 8337935 linux-pp

# jdk_management

com/sun/management/HotSpotDiagnosticMXBean/DumpThreads.java 8364314 generic-all

com/sun/management/OperatingSystemMXBean/GetProcessCpuLoad.java 8030957 aix-all
com/sun/management/OperatingSystemMXBean/GetSystemCpuLoad.java 8030957 aix-all

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