Unverified Commit 5d7f26cf authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!6642 v3 x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails 

Merge Pull Request from: @ci-robot 
 
PR sync from: Yu Liao <liaoyu15@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/XKPFNF7N4I4FYRR4NJ3Y7WPUXH46F6VJ/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9FNFO 
 
Link:https://gitee.com/openeuler/kernel/pulls/6642

 

Reviewed-by: default avatarLiu YongQiang <liuyongqiang13@huawei.com>
Reviewed-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: default avatarXie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: default avatarXiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
parents 007fde73 1f51ce68

arch/x86/hyperv/hv_init.c

+3 −0
Original line number Diff line number Diff line
@@ -201,6 +201,9 @@ void set_hv_tscchange_cb(void (*cb)(void)) 
		return;

	}



	if (!hv_vp_index)

		return;



	hv_reenlightenment_cb = cb;



	/* Make sure callback is registered before we write to MSRs */