From: Nick Child Date: Wed, 9 Aug 2023 22:10:35 +0000 (-0500) Subject: ibmvnic: Unmap DMA login rsp buffer on send login fail X-Git-Tag: v5.10.191~16 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9024873b943d30519b67f3dea06e8f468f7da422;p=thirdparty%2Fkernel%2Fstable.git ibmvnic: Unmap DMA login rsp buffer on send login fail commit 411c565b4bc63e9584a8493882bd566e35a90588 upstream. If the LOGIN CRQ fails to send then we must DMA unmap the response buffer. Previously, if the CRQ failed then the memory was freed without DMA unmapping. Fixes: c98d9cc4170d ("ibmvnic: send_login should check for crq errors") Signed-off-by: Nick Child Reviewed-by: Simon Horman Link: https://lore.kernel.org/r/20230809221038.51296-2-nnac123@linux.ibm.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index aea418b8610f9..79f5a59168a16 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -3861,11 +3861,14 @@ static int send_login(struct ibmvnic_adapter *adapter) if (rc) { adapter->login_pending = false; netdev_err(adapter->netdev, "Failed to send login, rc=%d\n", rc); - goto buf_rsp_map_failed; + goto buf_send_failed; } return 0; +buf_send_failed: + dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size, + DMA_FROM_DEVICE); buf_rsp_map_failed: kfree(login_rsp_buffer); adapter->login_rsp_buf = NULL;