!2239 [sync] PR-2169: net: sched: sch_qfq: Fix UAF in qfq_dequeue()

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/2169 
 
PR sync from: Liu Jian <liujian56@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/QKNCRH2CHJ3WLY77M2HOXYAMM7FBRXDI/ 
 
https://gitee.com/src-openeuler/kernel/issues/I80USB 
 
Link:https://gitee.com/openeuler/kernel/pulls/2239

 

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