Unverified Commit 26e63d23 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!9457 bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE 

Merge Pull Request from: @ci-robot 
 
PR sync from: Tengda Wu <wutengda2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/JUEQVZC2QUJSTYDIXYWU7ZJ7Z5LX2CTA/ 
 
https://gitee.com/src-openeuler/kernel/issues/IA6S6Q 
 
Link:https://gitee.com/openeuler/kernel/pulls/9457

 

Reviewed-by: default avatarXu Kuohai <xukuohai@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents c296899e 70231c28

kernel/bpf/syscall.c

+5 −0
Original line number Diff line number Diff line
@@ -3812,6 +3812,11 @@ static int bpf_prog_attach_check_attach_type(const struct bpf_prog *prog, 
			 * check permissions at attach time.

			 */

			return -EPERM;



		ptype = attach_type_to_prog_type(attach_type);

		if (prog->type != ptype)

			return -EINVAL;



		return prog->enforce_expected_attach_type &&

			prog->expected_attach_type != attach_type ?

			-EINVAL : 0;