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8276125: RunThese24H.java SIGSEGV in JfrThreadGroup::thread_group_id

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Reviewed-by: egahlin, shade
This commit is contained in:
Markus Grönlund 2021-12-06 14:36:51 +00:00
parent 6994d80937
commit a885aab696
1 changed files with 6 additions and 2 deletions

8
src/hotspot/share/jfr/recorder/checkpoint/types/jfrThreadGroup.cpp

@ -151,8 +151,12 @@ int JfrThreadGroupsHelper::populate_thread_group_hierarchy(const JavaThread* jt,
assert(current != NULL, "invariant");
assert(_thread_group_hierarchy != NULL, "invariant");
oop thread_oop = jt->threadObj();
if (thread_oop == nullptr) {
return 0;
}
// immediate thread group
Handle thread_group_handle(current, java_lang_Thread::threadGroup(jt->threadObj()));
Handle thread_group_handle(current, java_lang_Thread::threadGroup(thread_oop));
if (thread_group_handle == NULL) {
return 0;
}
@ -167,7 +171,7 @@ int JfrThreadGroupsHelper::populate_thread_group_hierarchy(const JavaThread* jt,
Handle parent_thread_group_handle(current, parent_thread_group_obj);
// and check parents parents...
while (!(parent_thread_group_handle == NULL)) {
while (parent_thread_group_handle != nullptr) {
const jweak parent_group_weak_ref = use_weak_handles ? JNIHandles::make_weak_global(parent_thread_group_handle) : NULL;
thread_group_pointers = new JfrThreadGroupPointers(parent_thread_group_handle, parent_group_weak_ref);
_thread_group_hierarchy->append(thread_group_pointers);