# HG changeset patch
# User dholmes
# Date 1543374172 18000
# Node ID 4b427f2653f1a6878de157a041abeb39adc759d5
# Parent  19b15ff2576bb040617489580672bfdaadc6ace6
8212207: runtime/InternalApi/ThreadCpuTimesDeadlock.java crashes with SEGV in pthread_getcpuclockid+0x0
Summary: skip non-JavaThreads that have not reached a minimal initialization point - setting their stack size
Reviewed-by: kbarrett, stuefe

diff -r 19b15ff2576b -r 4b427f2653f1 src/hotspot/share/services/management.cpp
--- a/src/hotspot/share/services/management.cpp	Tue Nov 27 21:20:16 2018 -0500
+++ b/src/hotspot/share/services/management.cpp	Tue Nov 27 22:02:52 2018 -0500
@@ -1645,6 +1645,12 @@
     return;
   }
 
+  // NonJavaThread instances may not be fully initialized yet, so we need to
+  // skip any that aren't - check for zero stack_size()
+  if (!thread->is_Java_thread() && thread->stack_size() == 0) {
+    return;
+  }
+
   if (_count >= _names_len || _count >= _times_len) {
     // skip if the result array is not big enough
     return;