Unverified Commit 983693ee authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!11863 memcg_write_event_control(): fix a user-triggerable oops 

Merge Pull Request from: @ci-robot 
 
PR sync from: Jinjiang Tu <tujinjiang@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/KM6QACHX5UDNSEDXTOFEGWURX4IF5LUD/ 
 
https://gitee.com/src-openeuler/kernel/issues/IAQOJK 
 
Link:https://gitee.com/openeuler/kernel/pulls/11863

 

Reviewed-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
parents 49b2b9c1 93b7e897

mm/memcontrol.c

+5 −2
Original line number Diff line number Diff line
@@ -4578,9 +4578,12 @@ static ssize_t memcg_write_event_control(struct kernfs_open_file *of, 
	buf = endp + 1;



	cfd = simple_strtoul(buf, &endp, 10);

	if ((*endp != ' ') && (*endp != '\0'))

		return -EINVAL;

	if (*endp == '\0')

		buf = endp;

	else if (*endp == ' ')

		buf = endp + 1;

	else

		return -EINVAL;



	event = kzalloc(sizeof(*event), GFP_KERNEL);

	if (!event)