!1589 [sync] PR-1557: net/sched: cls_fw: Fix improper refcount update leads to use-after-free

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/1557 
 
PR sync from: Dong Chenchen <dongchenchen2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/233WCLKDGOFGUPF6WDFRIM426TVBRFML/ 
 
https://gitee.com/src-openeuler/kernel/issues/I7N3N3 
 
Link:https://gitee.com/openeuler/kernel/pulls/1589

 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>