On 2022/4/11 13:34, Zhu Yanjun wrote: > 738 if (res->state == rdatm_res_state_new) { > 739 mr = qp->resp.mr; > <----It seems that mr is from here. > 740 qp->resp.mr = NULL; > 741 Hi Bob and Yanjun I wonder if the following patch has fixed the null pointer issue in rxe_mr_copy(). commit 570a4bf7440e9fb2a4164244a6bf60a46362b627 Author: Bob Pearson <rpearsonhpe@xxxxxxxxx> Date: Mon Apr 18 12:41:04 2022 -0500 RDMA/rxe: Recheck the MR in when generating a READ reply Best Regards, Xiao Yang