Re: [libvirt] [PATCH] qemu: Avoid crash in qemuDiskGetActualType

Libvirtd would crash if a domain contained an empty cdrom drive of type='volume' as the disk def->srcpool member would be dereferenced. Fix it by checking if the source pool is present before dereferencing it. Also alter tests to catch this issue in the future. Reported by: Kevin Shanahan Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1056328 --- src/qemu/qemu_conf.c | 2 +- tests/qemuxml2argvdata/qemuxml2argv-disk-source-pool.args | 2 ++ tests/qemuxml2argvdata/qemuxml2argv-disk-source-pool.xml | 6 ++++++ 3 files changed, 9 insertions(+), 1 deletion(-) diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index 4378791..ac53f6d 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c @@ -1302,7 +1302,7 @@ cleanup: int qemuDiskGetActualType(virDomainDiskDefPtr def) { - if (def->type == VIR_DOMAIN_DISK_TYPE_VOLUME) + if (def->type == VIR_DOMAIN_DISK_TYPE_VOLUME && def->srcpool) return def->srcpool->actualtype;