1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 80b48a8fb47b..c6d1c1ce9ed7 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -899,6 +899,7 @@ static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p,
         mm->pinned_vm = 0;
         memset(&mm->rss_stat, 0, sizeof(mm->rss_stat));
         spin_lock_init(&mm->page_table_lock);
+        spin_lock_init(&mm->arg_lock);
         mm_init_cpumask(mm);
         mm_init_aio(mm);
         mm_init_owner(mm, p);