1 files changed, 4 insertions, 0 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 72e3252c6763..b18d64554feb 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -979,6 +979,10 @@ static task_t *copy_process(unsigned long clone_flags,
         }
 #endif
 
+#ifdef CONFIG_DEBUG_MUTEXES
+        p->blocked_on = NULL; /* not blocked yet */
+#endif
+
         p->tgid = p->pid;
         if (clone_flags & CLONE_THREAD)
                 p->tgid = current->tgid;