8303549: [AIX] TestNativeStack.java is failing with exit value 1

Reviewed-by: mbaesken
Backport-of: 5ff42d14294199eb3bf10b66530f9249fb68810d

test/hotspot/jtreg/runtime/jni/getCreatedJavaVMs/exeGetCreatedJavaVMs.c

@@ -89,14 +89,19 @@ void *thread_runner(void *threadid) {
 
 int main (int argc, char* argv[]) {
   pthread_t threads[NUM_THREADS];
+  pthread_attr_t attr;
+  pthread_attr_init(&attr);
+  size_t stack_size = 0x100000;
+  pthread_attr_setstacksize(&attr, stack_size);
   for (int i = 0; i < NUM_THREADS; i++ ) {
     printf("[*] Creating thread %d\n", i);
-    int status = pthread_create(&threads[i], NULL, thread_runner, (void *)(intptr_t)i);
+    int status = pthread_create(&threads[i], &attr, thread_runner, (void *)(intptr_t)i);
     if (status != 0) {
       printf("[*] Error creating thread %d - %d\n", i, status);
       exit(-1);
     }
   }
+  pthread_attr_destroy(&attr);
   for (int i = 0; i < NUM_THREADS; i++ ) {
     pthread_join(threads[i], NULL);
   }

test/hotspot/jtreg/runtime/jni/nativeStack/libnativeStack.c

@@ -109,11 +109,18 @@ Java_TestNativeStack_triggerJNIStackTrace
 
   warning = warn;
 
-  if ((res = pthread_create(&thread, NULL, thread_start, NULL)) != 0) {
+  pthread_attr_t attr;
+  pthread_attr_init(&attr);
+  size_t stack_size = 0x100000;
+  pthread_attr_setstacksize(&attr, stack_size);
+
+  if ((res = pthread_create(&thread, &attr, thread_start, NULL)) != 0) {
     fprintf(stderr, "TEST ERROR: pthread_create failed: %s (%d)\n", strerror(res), res);
     exit(1);
   }
 
+  pthread_attr_destroy(&attr);
+
   if ((res = pthread_join(thread, NULL)) != 0) {
     fprintf(stderr, "TEST ERROR: pthread_join failed: %s (%d)\n", strerror(res), res);
     exit(1);