The new_params variable must be initialized in case the virDomainGetSchedulerParameters call fails and we hit the cleanup section before actually allocating the new parameters. Signed-off-by: Federico Simoncelli <fsimonce(a)redhat.com&gt; --- python/libvirt-override.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/python/libvirt-override.c b/python/libvirt-override.c index bb1d881..485ed28 100644 --- a/python/libvirt-override.c +++ b/python/libvirt-override.c @@ -700,7 +700,7 @@ libvirt_virDomainSetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED, int i_retval; int nparams = 0; Py_ssize_t size = 0; - virTypedParameterPtr params, new_params; + virTypedParameterPtr params, new_params = NULL; if (!PyArg_ParseTuple(args, (char *)"OO:virDomainSetScedulerParameters", &pyobj_domain, &info))