--- mongodb-src-r3.2.1.orig/src/mongo/platform/stack_locator_pthread_getattr_np.cpp
+++ mongodb-src-r3.2.1/src/mongo/platform/stack_locator_pthread_getattr_np.cpp
@@ -31,6 +31,7 @@
 #include "mongo/platform/stack_locator.h"
 
 #include <pthread.h>
+#include <sys/resource.h>
 
 #include "mongo/util/assert_util.h"
 #include "mongo/util/scopeguard.h"
@@ -52,6 +53,11 @@
     invariant(result == 0);
     invariant(base != nullptr);
     invariant(size != 0);
+
+    struct rlimit rl;
+
+    invariant(getrlimit(RLIMIT_STACK, &rl) == 0);
+    size = rl.rlim_cur ? : 2 * 1024 * 1024;
 
     // TODO: Assumes a downward growing stack. Note here that
     // getstack returns the stack *base*, being the bottom of the