diff --git a/llvm/utils/unittest/googletest/src/gtest-death-test.cc b/llvm/utils/unittest/googletest/src/gtest-death-test.cc
index a01a3698308782..cb8a836e1421db 100644
--- a/llvm/utils/unittest/googletest/src/gtest-death-test.cc
+++ b/llvm/utils/unittest/googletest/src/gtest-death-test.cc
@@ -1070,7 +1070,7 @@ static pid_t ExecDeathTestSpawnChild(char* const* argv, int close_fd) {
 
   if (!use_fork) {
     static const bool stack_grows_down = StackGrowsDown();
-    const size_t stack_size = getpagesize();
+    const size_t stack_size = getpagesize() * 2;
     // MMAP_ANONYMOUS is not defined on Mac, so we use MAP_ANON instead.
     void* const stack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE,
                              MAP_ANON | MAP_PRIVATE, -1, 0);