From 68279b69380c1f5c42807c0be2259153f285e067 Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Mon, 13 Jul 2015 13:41:53 +0200 Subject: [PATCH 13/58] rdma: Fix qemu crash when IPv6 address is used for migration Message-id: <1436794926-1598-5-git-send-email-dgilbert@redhat.com> Patchwork-id: 66975 O-Subject: [RHEL-7.2 qemu-kvm-rhev PATCH 04/17] rdma: Fix qemu crash when IPv6 address is used for migration Bugzilla: 1210715 RH-Acked-by: Marcel Apfelbaum RH-Acked-by: Laszlo Ersek RH-Acked-by: Juan Quintela From: Padmanabh Ratnakar 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 (cherry picked from commit 5b61d5752156dcbbe2bf1366c877a676ed9f8f51) Signed-off-by: Miroslav Rezanina --- migration/rdma.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/migration/rdma.c b/migration/rdma.c index b1b803c..f106a52 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); -- 1.8.3.1