Re: [libvirt PATCH 3/3] nodedev: handle null return from GetIOMMUGroupDev()

Coverity reported that this function can return NULL, so it should be handled properly. Signed-off-by: Jonathon Jongsma <jjongsma(a)redhat.com&gt;

--- src/node_device/node_device_driver.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/src/node_device/node_device_driver.c b/src/node_device/node_device_driver.c index 5f8995172d..2fcebd065b 100644 --- a/src/node_device/node_device_driver.c +++ b/src/node_device/node_device_driver.c @@ -1192,9 +1192,18 @@ nodeDeviceDestroy(virNodeDevicePtr device) * shouldn't try to remove the device. */ g_autofree char *vfiogroup = virMediatedDeviceGetIOMMUGroupDev(def->caps->data.mdev.uuid); - VIR_AUTOCLOSE fd = open(vfiogroup, O_RDONLY); + VIR_AUTOCLOSE fd = -1; g_autofree char *errmsg = NULL; + if (!vfiogroup) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Unable to determine iommu group for '%s'"), + def->name); + goto cleanup; + } + + fd = open(vfiogroup, O_RDONLY); + if (fd < 0 && errno == EBUSY) { virReportError(VIR_ERR_INTERNAL_ERROR, _("Unable to destroy '%s': device in use"),