1 files changed, 5 insertions, 9 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index 80137a5d9467..2d8be7ebb0f7 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -40,7 +40,6 @@
 #include <linux/cn_proc.h>
 #include <linux/mutex.h>
 #include <linux/futex.h>
-#include <linux/compat.h>
 #include <linux/pipe_fs_i.h>
 #include <linux/audit.h> /* for audit_free() */
 #include <linux/resource.h>
@@ -141,6 +140,11 @@ static void __exit_signal(struct task_struct *tsk)
         if (sig) {
                 flush_sigqueue(&sig->shared_pending);
                 taskstats_tgid_free(sig);
+                /*
+                 * Make sure ->signal can't go away under rq->lock,
+                 * see account_group_exec_runtime().
+                 */
+                task_rq_unlock_wait(tsk);
                 __cleanup_signal(sig);
         }
 }
@@ -1054,14 +1058,6 @@ NORET_TYPE void do_exit(long code)
                 exit_itimers(tsk->signal);
         }
         acct_collect(code, group_dead);
-#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
         if (group_dead)
                 tty_audit_exit();
         if (unlikely(tsk->audit_context))