For network type disk, host port is not checked when start a guest, so the error may be unclear when with invalid port. If pass -1 to port the error will be error: Failed to start domain rh6-i error: An error occurred, but the cause is unknown So make a check to make sure the port range from 0 to 65536 Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1163553 Signed-off-by: Shanzhi Yu <shyu(a)redhat.com&gt; --- src/qemu/qemu_command.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index f674ba9..66082e1 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -3016,6 +3016,18 @@ qemuBuildNetworkDriveURI(int protocol, case VIR_STORAGE_NET_PROTOCOL_FTPS: case VIR_STORAGE_NET_PROTOCOL_TFTP: case VIR_STORAGE_NET_PROTOCOL_ISCSI: + if (VIR_ALLOC(uri) < 0) + goto cleanup; + + if (qemuNetworkDriveGetPort(protocol, hosts->port) < 0 || + qemuNetworkDriveGetPort(protocol, hosts->port) > 65536) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("port should be in range 0 to 65536 for '%s' host"), + virStorageNetProtocolTypeToString(protocol)); + + goto cleanup; + } + case VIR_STORAGE_NET_PROTOCOL_GLUSTER: if (nhosts != 1) { virReportError(VIR_ERR_INTERNAL_ERROR, -- 1.9.3