From: Ma Wupeng mawupeng1@huawei.com

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

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

LTP's proc01 test was failing be because this ret code (1):

proc01 1 TFAIL : proc01.c:400: read failed: /proc/self/task/1406366/reliable: errno=EPERM(1): Operation not permitted

To slove this problem, replace EPERM with EINVAL in reliable_check().

Signed-off-by: Ma Wupeng mawupeng1@huawei.com Reviewed-by: Kefeng Wang wangkefeng.wang@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- fs/proc/base.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/proc/base.c b/fs/proc/base.c index 8ae7c2be70c2..0c3a2eb61726 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1264,14 +1264,14 @@ 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 -EPERM; + return -EINVAL;

if (is_global_init(task)) - return -EPERM; + return -EINVAL;

if (!task->mm || (task->flags & PF_KTHREAD) || (task->flags & PF_EXITING)) - return -EPERM; + return -EINVAL;

return 0; }