!1338 [sync] PR-1335: bpf: Fix incorrect verifier pruning due to missing register precision taints

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/1335 
 
PR sync from: Pu Lehui <pulehui@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/U3JJGUSJTF5PH22SUDWUTPBSGUN6AUFJ/ 
 
 
Link:https://gitee.com/openeuler/kernel/pulls/1338

 

Reviewed-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>