Commit 0572eccf authored by Chengchang Tang's avatar Chengchang Tang Committed by Leon Romanovsky
Browse files

RDMA/hns: Fix accessing invalid dip_ctx during destroying QP 



If it fails to modify QP to RTR, dip_ctx will not be attached. And
during detroying QP, the invalid dip_ctx pointer will be accessed.

Fixes: faa62440 ("RDMA/hns: Fix different dgids mapping to the same dip_idx")
Signed-off-by: default avatarChengchang Tang <tangchengchang@huawei.com>
Signed-off-by: default avatarJunxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20241220055249.146943-3-huangjunxian6@hisilicon.com


Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent 8673a6c2

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

+3 −0
Original line number Diff line number Diff line
@@ -5619,6 +5619,9 @@ static void put_dip_ctx_idx(struct hns_roce_dev *hr_dev, 
{

	struct hns_roce_dip *hr_dip = hr_qp->dip;



	if (!hr_dip)

		return;



	xa_lock(&hr_dev->qp_table.dip_xa);



	hr_dip->qp_cnt--;