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-rw-r--r--kernel/sched.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 788ecce1e0e4..3ee2ae45125f 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -3850,6 +3850,10 @@ do_sched_setscheduler(pid_t pid, int policy, struct sched_param __user *param)
asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
struct sched_param __user *param)
{
+ /* negative values for policy are not valid */
+ if (policy < 0)
+ return -EINVAL;
+
return do_sched_setscheduler(pid, policy, param);
}