On Fri, Feb 27, 2015 at 08:49:13AM +0800, Ouyang Changchun wrote:
> Fix possible memory leak issue: free kvlist before return;
> Fix possible resource lost issue: close qssockfd before return;
> 
> Signed-off-by: Changchun Ouyang <changchun.ouyang at intel.com>
> ---
> change in v2:
>   - Make the error exit point a common path.
> 
>  lib/librte_pmd_af_packet/rte_eth_af_packet.c | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/lib/librte_pmd_af_packet/rte_eth_af_packet.c 
> b/lib/librte_pmd_af_packet/rte_eth_af_packet.c
> index 80e9bdf..c675724 100644
> --- a/lib/librte_pmd_af_packet/rte_eth_af_packet.c
> +++ b/lib/librte_pmd_af_packet/rte_eth_af_packet.c
> @@ -694,6 +694,8 @@ error:
>               }
>               rte_free(*internals);
>       }
> +     if (qsockfd != -1)
> +             close(qsockfd);
This is insufficient.  qsockfd is a loop index that is reassigned for each tx
queue we have.  In the error path you need to do this, and loop through the tx
queues, closing each tx_queue->sockfd.

>       return -1;
>  }
>  
> @@ -823,16 +825,21 @@ rte_pmd_af_packet_devinit(const char *name, const char 
> *params)
>               ret = rte_kvargs_process(kvlist, ETH_AF_PACKET_IFACE_ARG,
>                                        &open_packet_iface, &sockfd);
>               if (ret < 0)
> -                     return -1;
> +                     goto error;
>       }
>  
>       ret = rte_eth_from_packet(name, &sockfd, numa_node, kvlist);
>       close(sockfd); /* no longer needed */
>  
>       if (ret < 0)
> -             return -1;
> +             goto error;
>  
> +     rte_kvargs_free(kvlist);
>       return 0;
> +
> +error:
> +     rte_kvargs_free(kvlist);
> +     return -1;
>  }
>  
>  static struct rte_driver pmd_af_packet_drv = {
> -- 
> 1.8.4.2
> 
> 

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