--- a/src/hotspot/os/aix/os_aix.cpp	Tue Sep 26 00:52:29 2017 -0700
+++ b/src/hotspot/os/aix/os_aix.cpp	Tue Sep 26 11:25:34 2017 +0200
@@ -770,8 +770,15 @@
   const pthread_t pthread_id = ::pthread_self();
   const tid_t kernel_thread_id = ::thread_self();
 
-  log_info(os, thread)("Thread is alive (tid: " UINTX_FORMAT ", kernel thread id: " UINTX_FORMAT ").",
-    os::current_thread_id(), (uintx) kernel_thread_id);
+  LogTarget(Info, os, thread) lt;
+  if (lt.is_enabled()) {
+    address low_address = thread->stack_end();
+    address high_address = thread->stack_base();
+    lt.print("Thread is alive (tid: " UINTX_FORMAT ", kernel thread id: " UINTX_FORMAT
+             ", stack [" PTR_FORMAT " - " PTR_FORMAT " (" SIZE_FORMAT "k using %uk pages)).",
+             os::current_thread_id(), (uintx) kernel_thread_id, low_address, high_address,
+             (high_address - low_address) / K, os::Aix::query_pagesize(low_address) / K);
+  }
 
   // Normally, pthread stacks on AIX live in the data segment (are allocated with malloc()
   // by the pthread library). In rare cases, this may not be the case, e.g. when third-party
@@ -864,6 +871,14 @@
   // Calculate stack size if it's not specified by caller.
   size_t stack_size = os::Posix::get_initial_stack_size(thr_type, req_stack_size);
 
+  // JDK-8187028: It was observed that on some configurations (4K backed thread stacks)
+  // the real thread stack size may be smaller than the requested stack size, by as much as 64K.
+  // This very much looks like a pthread lib error. As a workaround, increase the stack size
+  // by 64K for small thread stacks (arbitrarily choosen to be < 4MB)
+  if (stack_size < 4096 * K) {
+    stack_size += 64 * K;
+  }
+
   // On Aix, pthread_attr_setstacksize fails with huge values and leaves the
   // thread size in attr unchanged. If this is the minimal stack size as set
   // by pthread_attr_init this leads to crashes after thread creation. E.g. the