[Qemu-stable] [PATCH] rdma: bug fixes

[mrhines]

From: "Michael R. Hines" <address@hidden>

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: address@hidden
Reported-by: address@hidden
Signed-off-by: Michael R. Hines <address@hidden>
---
 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