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-rw-r--r--kernel/sys.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/kernel/sys.c b/kernel/sys.c
index 26a6b73a6b85..877fe4f8e05e 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -222,6 +222,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who)
if (which > PRIO_USER || which < PRIO_PROCESS)
return -EINVAL;
+ rcu_read_lock();
read_lock(&tasklist_lock);
switch (which) {
case PRIO_PROCESS:
@@ -267,6 +268,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who)
}
out_unlock:
read_unlock(&tasklist_lock);
+ rcu_read_unlock();
return retval;
}
@@ -569,11 +571,6 @@ static int set_user(struct cred *new)
if (!new_user)
return -EAGAIN;
- if (!task_can_switch_user(new_user, current)) {
- free_uid(new_user);
- return -EINVAL;
- }
-
if (atomic_read(&new_user->processes) >=
current->signal->rlim[RLIMIT_NPROC].rlim_cur &&
new_user != INIT_USER) {