From 5b61d5752156dcbbe2bf1366c877a676ed9f8f51 Mon Sep 17 00:00:00 2001 From: Padmanabh Ratnakar Date: Wed, 3 Jun 2015 04:44:10 +0530 Subject: [PATCH] rdma: Fix qemu crash when IPv6 address is used for migration Qemu crashes when IPv6 address is specified for migration and access to any RDMA uverbs device available on the system is blocked using cgroups. Fix the crash by checking the return value of ibv_open_device routine. Signed-off-by: Meghana Cheripady Signed-off-by: Padmanabh Ratnakar Signed-off-by: Juan Quintela --- migration/rdma.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/migration/rdma.c b/migration/rdma.c index 77e3444..3671903 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -790,6 +790,13 @@ static int qemu_rdma_broken_ipv6_kernel(Error **errp, struct ibv_context *verbs) for (x = 0; x < num_devices; x++) { verbs = ibv_open_device(dev_list[x]); + if (!verbs) { + if (errno == EPERM) { + continue; + } else { + return -EINVAL; + } + } if (ibv_query_port(verbs, 1, &port_attr)) { ibv_close_device(verbs); -- 2.7.4