mm: reliable: Fix ret errno to EACCES

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4SK3S


CVE: NA

--------------------------------

Commit bc25b308 ("mm: reliable: Use EINVAL in reliable_check") update
EPERM to EINVAL try to pass LTP's proc01 test, however LTP only treat
EACCESS as whitelist in the scenario.

To solve this problem, update EINVAL to EACCESS.

Fixes: bc25b308 ("mm: reliable: Use EINVAL in reliable_check")

Signed-off-by: Ma Wupeng <mawupeng1@huawei.com>
Reviewed-by: Chen Wandun <chenwandun@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>

fs/proc/base.c

@@ -1264,7 +1264,7 @@ static const struct file_operations proc_oom_score_adj_operations = {
 static inline int reliable_check(struct task_struct *task, struct pid *pid)
 {
 	if (!mem_reliable_is_enabled())
-		return -EINVAL;
+		return -EACCES;
 
 	if (is_global_init(task))
 		return -EINVAL;