From: Soren Hansen <soren(a)linux2go.dk&gt; If umlBuildCommandLineChr fails (e.g. due to an unsupported chardev type), it returns NULL. umlBuildCommandLine does not check for this and sets this as an argument on the comand line, effectively ending the argument list. This patch checks for this case and sets the chardev to "none". Signed-off-by: Soren Hansen <soren(a)linux2go.dk&gt; --- src/uml/uml_conf.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/src/uml/uml_conf.c b/src/uml/uml_conf.c index 1623a78..42193e4 100644 --- a/src/uml/uml_conf.c +++ b/src/uml/uml_conf.c @@ -511,10 +511,10 @@ int umlBuildCommandLine(virConnectPtr conn, } for (i = 0 ; i < UML_MAX_CHAR_DEVICE ; i++) { - char *ret; + char *ret = NULL; if (i == 0 && vm->def->console) ret = umlBuildCommandLineChr(vm->def->console, "con"); - else + if (!ret) if (virAsprintf(&ret, "con%d=none", i) < 0) goto no_memory; ADD_ARG(ret); @@ -522,13 +522,13 @@ int umlBuildCommandLine(virConnectPtr conn, for (i = 0 ; i < UML_MAX_CHAR_DEVICE ; i++) { virDomainChrDefPtr chr = NULL; - char *ret; + char *ret = NULL; for (j = 0 ; j < vm->def->nserials ; j++) if (vm->def->serials[j]->target.port == i) chr = vm->def->serials[j]; if (chr) ret = umlBuildCommandLineChr(chr, "ssl"); - else + if (!ret) if (virAsprintf(&ret, "ssl%d=none", i) < 0) goto no_memory; ADD_ARG(ret); -- 1.7.0.4