!5446 keys: safe concurrent user->{session,uid}_keyring access

Merge Pull Request from: @ci-robot 
 
PR sync from: GUO Zihua <guozihua@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/SEMR3CGBWM2AWNKJW6ZBCOBU4UNMSGUX/ 
 
https://gitee.com/openeuler/kernel/issues/I9355O 
 
Link:https://gitee.com/openeuler/kernel/pulls/5446

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>