lockdep: fix dup_call_stack()

dup_call_stack() does not properly deal with the sentinel. Fix it.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

1 files changed, 7 insertions, 5 deletions

diff --git a/core/kernel/lockdep.c b/core/kernel/lockdep.c
index 7d8b89d3..04cb0048 100644
--- a/core/kernel/lockdep.c
+++ b/core/kernel/lockdep.c
@@ -43,19 +43,21 @@ static struct lockdep_node *lockdep_add_to_graph(
 
 static vaddr_t *dup_call_stack(vaddr_t *stack)
 {
+	vaddr_t *nstack = NULL;
+	int n = 0;
+
 	if (!stack)
 		return NULL;
 
-	int n = 0;
-
 	while (stack[n])
 		n++;
 
-	vaddr_t *nstack = malloc(n * sizeof(vaddr_t));
-
+	nstack = malloc((n + 1) * sizeof(vaddr_t));
 	if (!nstack)
 		return NULL;
-	memcpy(nstack, stack, n * sizeof(vaddr_t));
+
+	memcpy(nstack, stack, (n + 1) * sizeof(vaddr_t));
+
 	return nstack;
 }