IB/sdp: fix a crash when child is disconnected while parent is being destroyed

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>

diff --git a/drivers/infiniband/ulp/sdp/sdp_cma.c b/drivers/infiniband/ulp/sdp/sdp_cma.c
index 10f25cfc9b84d00ac59b8be742c395526149274d..a0a14fbe6c6c11a551cc4dcbdbaf78940008b3cb 100644 (file)
--- a/drivers/infiniband/ulp/sdp/sdp_cma.c
+++ b/drivers/infiniband/ulp/sdp/sdp_cma.c
@@ -487,6 +487,7 @@ int sdp_cma_handler(struct rdma_cm_id *id, struct rdma_cm_event *event)
                lock_sock(parent);
                if (!sdp_sk(parent)->id) { /* TODO: look at SOCK_DEAD? */
                        sdp_dbg(sk, "parent is going away.\n");
+                       child = NULL;
                        goto done;
                }
                if (!list_empty(&sdp_sk(child)->backlog_queue))