In the current code if mem_mask is NULL there is a "goto error", but we freeing it without knowing if mem_mask is NULL or not, therefor I've had a check. Signed-off-by: Matthias Gatto <matthias.gatto(a)outscale.com&gt; --- src/qemu/qemu_cgroup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c index ca255c8..926726c 100644 --- a/src/qemu/qemu_cgroup.c +++ b/src/qemu/qemu_cgroup.c @@ -810,7 +810,8 @@ qemuRestoreCgroupState(virDomainObjPtr vm) goto error; cleanup: - VIR_FREE(mem_mask); + if (mem_mask) + VIR_FREE(mem_mask); virBitmapFree(all_nodes); return; -- 1.8.3.1