With security_driver set to "none" in /etc/libvirt/qemu.conf, libvirtd would crash when attempted to attach to an existing qemu process. Only copy the security model if it actually exists. --- src/qemu/qemu_process.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 9309761..45ed011 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -3609,7 +3609,8 @@ int qemuProcessAttach(virConnectPtr conn ATTRIBUTE_UNUSED, if (virSecurityManagerGetProcessLabel(driver->securityManager, vm, seclabel) < 0) goto cleanup; - if (!(vm->def->seclabel.model = strdup(driver->caps->host.secModel.model))) + if (driver->caps->host.secModel.model && + !(vm->def->seclabel.model = strdup(driver->caps->host.secModel.model))) goto no_memory; if (!(vm->def->seclabel.label = strdup(seclabel->label))) goto no_memory; -- 1.7.7