migration/rdma: Fix a memory issue for migration

In commit 3fa9642ff7 change was made to convert the RDMA backend to
accept MigrateAddress struct. However, the assignment of "host" leads
to data corruption on the target host and the failure of migration.

    isock->host = rdma->host;

By allocating the memory explicitly for it with g_strdup_printf(), the
issue is fixed and the migration doesn't fail any more.

Fixes: 3fa9642ff7 ("migration: convert rdma backend to accept MigrateAddress")
Cc: qemu-stable <qemu-stable@nongnu.org>
Cc: Li Zhijian <lizhijian@fujitsu.com>
Link: https://lore.kernel.org/r/CAHEcVy4L_D6tuhJ8h=xLR4WaPaprJE3nnxZAEyUnoTrxQ6CF5w@mail.gmail.com
Signed-off-by: Yu Zhang <yu.zhang@ionos.com>
[peterx: use g_strdup() instead of g_strdup_printf(), per Zhijian]
Signed-off-by: Peter Xu <peterx@redhat.com>

diff --git a/migration/rdma.c b/migration/rdma.c
index a355dcea89896bf468f349daf5909a0d919284fb..855753c67191a926459dd3d89224da2f78e508fa 100644 (file)
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -3357,7 +3357,7 @@ static int qemu_rdma_accept(RDMAContext *rdma)
         goto err_rdma_dest_wait;
     }
 
-    isock->host = rdma->host;
+    isock->host = g_strdup(rdma->host);
     isock->port = g_strdup_printf("%d", rdma->port);
 
     /*