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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 <meghana.cheripady@avagotech.com>
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@avagotech.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Padmanabh Ratnakar 2015-06-03 04:44:10 +05:30 committed by Juan Quintela
parent 5ee6926582
commit 5b61d57521
1 changed files with 7 additions and 0 deletions
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7
migration/rdma.c
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@ -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);