qemu_driver: check whether iothread is used by controller

This follows the same check for disk, because we cannot remove iothread
if it's used by disk or by controller.  It could lead to crashing QEMU.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 98cf06bd681f9d8c002c54f9e8b4e718f56a0b6e..013add5e9be84d024346510c9afd9fce7c83ef89 100644 (file)
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -5749,6 +5749,16 @@ qemuDomainDelIOThreadCheck(virDomainDefPtr def,
         }
     }
 
+    for (i = 0; i < def->ncontrollers; i++) {
+        if (def->controllers[i]->iothread == iothread_id) {
+            virReportError(VIR_ERR_INVALID_ARG,
+                           _("cannot remove IOThread '%u' since it "
+                             "is being used by controller"),
+                           iothread_id);
+            return -1;
+        }
+    }
+
     return 0;
 }