From def4a6ffc9d178d6bb14178f56873c4831fb05a7 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Sat, 22 Oct 2016 01:01:21 +0300 Subject: [PATCH] IB/isert: do not ignore errors in dma_map_single() There are several places, where errors in dma_map_single() are ignored. The patch fixes them. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Acked-by: Sagi Grimberg Signed-off-by: Doug Ledford --- drivers/infiniband/ulp/isert/ib_isert.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 6dd43f6..f0ba5f8 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -1851,6 +1851,8 @@ isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd) isert_cmd->pdu_buf_dma = ib_dma_map_single(ib_dev, (void *)cmd->sense_buffer, pdu_len, DMA_TO_DEVICE); + if (ib_dma_mapping_error(ib_dev, isert_cmd->pdu_buf_dma)) + return -ENOMEM; isert_cmd->pdu_buf_len = pdu_len; tx_dsg->addr = isert_cmd->pdu_buf_dma; @@ -1978,6 +1980,8 @@ isert_put_reject(struct iscsi_cmd *cmd, struct iscsi_conn *conn) isert_cmd->pdu_buf_dma = ib_dma_map_single(ib_dev, (void *)cmd->buf_ptr, ISCSI_HDR_LEN, DMA_TO_DEVICE); + if (ib_dma_mapping_error(ib_dev, isert_cmd->pdu_buf_dma)) + return -ENOMEM; isert_cmd->pdu_buf_len = ISCSI_HDR_LEN; tx_dsg->addr = isert_cmd->pdu_buf_dma; tx_dsg->length = ISCSI_HDR_LEN; @@ -2018,6 +2022,8 @@ isert_put_text_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn) isert_cmd->pdu_buf_dma = ib_dma_map_single(ib_dev, txt_rsp_buf, txt_rsp_len, DMA_TO_DEVICE); + if (ib_dma_mapping_error(ib_dev, isert_cmd->pdu_buf_dma)) + return -ENOMEM; isert_cmd->pdu_buf_len = txt_rsp_len; tx_dsg->addr = isert_cmd->pdu_buf_dma; -- 2.7.4