Re: [Qemu-devel] [PATCH] rdma: bug fixes

[Michael Roth <mdroth@linux.vnet.ibm.com>]

Quoting mrhines@linux.vnet.ibm.com (2014-02-17 20:34:06)
> From: "Michael R. Hines" <mrhines@us.ibm.com>
> 
> 1. Fix small memory leak in parsing inet address from command line in data_init()
> 2. Fix ibv_post_send() return value check and pass error code back up correctly.
> 3. Fix rdma_destroy_qp() segfault after failure to connect to destination.
> 
> Reported-by: frank.yangjie@gmail.com
> Reported-by: dgilbert@redhat.com
> Signed-off-by: Michael R. Hines <mrhines@us.ibm.com>

Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>

> ---
>  migration-rdma.c | 20 ++++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/migration-rdma.c b/migration-rdma.c
> index f94f3b4..29351a6 100644
> --- a/migration-rdma.c
> +++ b/migration-rdma.c
> @@ -1589,13 +1589,11 @@ static int qemu_rdma_post_send_control(RDMAContext *rdma, uint8_t *buf,
>      }
> 
> 
> -    if (ibv_post_send(rdma->qp, &send_wr, &bad_wr)) {
> -        return -1;
> -    }
> +    ret = ibv_post_send(rdma->qp, &send_wr, &bad_wr);
> 
> -    if (ret < 0) {
> +    if (ret > 0) {
>          fprintf(stderr, "Failed to use post IB SEND for control!\n");
> -        return ret;
> +        return -ret;
>      }
> 
>      ret = qemu_rdma_block_for_wrid(rdma, RDMA_WRID_SEND_CONTROL, NULL);
> @@ -2237,10 +2235,6 @@ static void qemu_rdma_cleanup(RDMAContext *rdma)
>          }
>      }
> 
> -    if (rdma->qp) {
> -        rdma_destroy_qp(rdma->cm_id);
> -        rdma->qp = NULL;
> -    }
>      if (rdma->cq) {
>          ibv_destroy_cq(rdma->cq);
>          rdma->cq = NULL;
> @@ -2258,6 +2252,10 @@ static void qemu_rdma_cleanup(RDMAContext *rdma)
>          rdma->listen_id = NULL;
>      }
>      if (rdma->cm_id) {
> +        if (rdma->qp) {
> +            rdma_destroy_qp(rdma->cm_id);
> +            rdma->qp = NULL;
> +        }
>          rdma_destroy_id(rdma->cm_id);
>          rdma->cm_id = NULL;
>      }
> @@ -2512,8 +2510,10 @@ static void *qemu_rdma_data_init(const char *host_port, Error **errp)
>          } else {
>              ERROR(errp, "bad RDMA migration address '%s'", host_port);
>              g_free(rdma);
> -            return NULL;
> +            rdma = NULL;
>          }
> +
> +        qapi_free_InetSocketAddress(addr);
>      }
> 
>      return rdma;
> -- 
> 1.8.1.2