Hi, there is a segfault in qemu_monitor_text.c. If some error accurs in qemuMonitorTextGetBlockInfo then the cleanup code calls VIR_FREE(info) without ensuring that info is initialized. Patch based on c6ec021b3c19c3ecc97d60d35b12eaa0b94da701: diff --git a/src/qemu/qemu_monitor_text.c b/src/qemu/qemu_monitor_text.c index a33d192..fb3309b 100644 --- a/src/qemu/qemu_monitor_text.c +++ b/src/qemu/qemu_monitor_text.c @@ -774,7 +774,7 @@ int qemuMonitorTextGetMemoryStats(qemuMonitorPtr mon, int qemuMonitorTextGetBlockInfo(qemuMonitorPtr mon, virHashTablePtr table) { - struct qemuDomainDiskInfo *info; + struct qemuDomainDiskInfo *info=NULL; char *reply = NULL; int ret = -1; char *dummy;