Unverified Commit cac47c69 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!889 [sync] PR-886: net: sched: fix NULL pointer dereference in mq_attach 

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/886 
 
PR sync from:  Zhengchao Shao <shaozhengchao@huawei.com>
 https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/thread/XWHRWDMB4P3YRCQBLQMFWCV4DDLKNDHE/ 
 
 
Link:https://gitee.com/openeuler/kernel/pulls/889

 

Reviewed-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 96ea00f7 b7e3431d

net/sched/sch_api.c

+4 −0
Original line number Diff line number Diff line
@@ -1590,6 +1590,10 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, 
					NL_SET_ERR_MSG(extack, "Qdisc parent/child loop detected");

					return -ELOOP;

				}

				if (clid == TC_H_INGRESS) {

					NL_SET_ERR_MSG(extack, "Ingress cannot graft directly");

					return -EINVAL;

				}

				qdisc_refcount_inc(q);

				goto graft;

			} else {