RDMA/cma: Only call cma_save_ib_info() for CM REQs

Calling cma_save_ib_info() for CM SIDR REQs results in a crash
accessing an invalid path record pointer.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 431465563364035b4bb71f2bdfc67e1bdf072880..7c0f9535fb7d443bf2c4b1647b3494816292020a 100644 (file)
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -879,7 +879,8 @@ static int cma_save_net_info(struct rdma_cm_id *id, struct rdma_cm_id *listen_id
 {
        struct cma_hdr *hdr;
 
-       if (listen_id->route.addr.src_addr.ss_family == AF_IB) {
+       if ((listen_id->route.addr.src_addr.ss_family == AF_IB) &&
+           (ib_event->event == IB_CM_REQ_RECEIVED)) {
                cma_save_ib_info(id, listen_id, ib_event->param.req_rcvd.primary_path);
                return 0;
        }