!4833 openvswitch: fix stack OOB read while fragmenting IPv4 packets

Merge Pull Request from: @ci-robot 
 
PR sync from: Ziyang Xuan <william.xuanziyang@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/XTHSDDITHHUJN4HQYHDGRWDJAS7DHOPQ/ 
 
https://gitee.com/src-openeuler/kernel/issues/I949B7 
 
Link:https://gitee.com/openeuler/kernel/pulls/4833

 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>