1 files changed, 7 insertions, 4 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index 0c8712630f05..f3030709d826 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4981,12 +4981,15 @@ recheck:
                             param->sched_priority > rlim_rtprio)
                                 return -EPERM;
                 }
+
                 /*
-                 * Like positive nice levels, dont allow tasks to
-                 * move out of SCHED_IDLE either:
+                 * Treat SCHED_IDLE as nice 20. Only allow a switch to
+                 * SCHED_NORMAL if the RLIMIT_NICE would normally permit it.
                  */
-                if (p->policy == SCHED_IDLE && policy != SCHED_IDLE)
-                        return -EPERM;
+                if (p->policy == SCHED_IDLE && policy != SCHED_IDLE) {
+                        if (!can_nice(p, TASK_NICE(p)))
+                                return -EPERM;
+                }
 
                 /* can't change other user's priorities */
                 if (!check_same_owner(p))