diff --git a/testcases/kernel/syscalls/clone/clone03.c b/testcases/kernel/syscalls/clone/clone03.c
index 24ee8e6..dada00c 100644
--- a/testcases/kernel/syscalls/clone/clone03.c
+++ b/testcases/kernel/syscalls/clone/clone03.c
@@ -87,13 +87,15 @@ static int pfd[2];
 
 char *TCID = "clone03";		/* Test program identifier.    */
 int TST_TOTAL = 1;		/* Total number of test cases. */
+void *poison_start;		/* stack for child */
+void *child_stack;	/* stack for child */
+#define POISON_SIZE getpagesize()
 
 int main(int ac, char **av)
 {
 
 	int lc;
 	char *msg;
-	void *child_stack;	/* stack for child */
 	char buff[10];
 	int child_pid;
 
@@ -104,10 +106,13 @@ int main(int ac, char **av)
 	setup();
 
 	/* Allocate stack for child */
-	if ((child_stack = (void *)malloc(CHILD_STACK_SIZE)) == NULL) {
+	if ((poison_start = (void *)malloc(POISON_SIZE+CHILD_STACK_SIZE)) == NULL) {
 		tst_brkm(TBROK, cleanup, "Cannot allocate stack for child");
 	}
 
+	memset(poison_start, 0xDE, POISON_SIZE);
+	child_stack = poison_start + POISON_SIZE;
+
 	for (lc = 0; TEST_LOOPING(lc); lc++) {
 
 		Tst_count = 0;
@@ -154,7 +159,7 @@ int main(int ac, char **av)
 
 	}
 
-	free(child_stack);
+	free(poison_start);
 
 	cleanup();
 	tst_exit();