qemu: hotplug: Reject VFIO hotplug if setting RLIMIT_MEMLOCK fails

Check the return value of virCommandSetMaxMemLock when hotplugging VFIO
PCI hostdevs and reject the hotplug if the memory limit can't be set.

diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index b02e9050f2d9a2c25e02a759ecbc4f02b9e744e3..13a4b300fdf9bd83b126c387f98d3f6c2b4432f8 100644 (file)
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1279,7 +1279,10 @@ qemuDomainAttachHostPCIDevice(virQEMUDriverPtr driver,
         }
 
         /* setup memory locking limits, that are necessary for VFIO */
-        virProcessSetMaxMemLock(vm->pid, qemuDomainGetMlockLimitBytes(vm->def));
+        if (virProcessSetMaxMemLock(vm->pid,
+                                    qemuDomainGetMlockLimitBytes(vm->def)) < 0)
+            goto error;
+
         break;
 
     default: