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ibmvnic: Unmap DMA login rsp buffer on send login fail

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commit 411c565b4b 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: c98d9cc417 ("ibmvnic: send_login should check for crq errors")
Signed-off-by: Nick Child <nnac123@linux.ibm.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20230809221038.51296-2-nnac123@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nick Child
2023-08-09 17:10:35 -05:00
committed by Greg Kroah-Hartman
parent d4750cea76
commit 9024873b94
1 changed files with 4 additions and 1 deletions
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drivers/net/ethernet/ibm/ibmvnic.c
+4 -1
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@@ -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;