1 files changed, 13 insertions, 0 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index f6083561dfe0..ac62f43ee430 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -40,6 +40,7 @@
 #include <linux/jiffies.h>
 #include <linux/tracehook.h>
 #include <linux/futex.h>
+#include <linux/compat.h>
 #include <linux/task_io_accounting_ops.h>
 #include <linux/rcupdate.h>
 #include <linux/ptrace.h>
@@ -79,6 +80,8 @@ DEFINE_PER_CPU(unsigned long, process_counts) = 0;
 
 __cacheline_aligned DEFINE_RWLOCK(tasklist_lock);  /* outer */
 
+DEFINE_TRACE(sched_process_fork);
+
 int nr_processes(void)
 {
         int cpu;
@@ -519,6 +522,16 @@ void mm_release(struct task_struct *tsk, struct mm_struct *mm)
 {
         struct completion *vfork_done = tsk->vfork_done;
 
+        /* Get rid of any futexes when releasing the mm */
+#ifdef CONFIG_FUTEX
+        if (unlikely(tsk->robust_list))
+                exit_robust_list(tsk);
+#ifdef CONFIG_COMPAT
+        if (unlikely(tsk->compat_robust_list))
+                compat_exit_robust_list(tsk);
+#endif
+#endif
+
         /* Get rid of any cached register state */
         deactivate_mm(tsk, mm);