tools: acrn-manager: fix a potential NULL pointer dereference

check the return value of vmmngr_find() before dereference in wait_vm_stop() Tracked-On: #1479 Signed-off-by: Yan, Like <like.yan@intel.com>
projectacrn · Oct 22, 2018 · e8c8656 · e8c8656
1 parent da3b027
commit e8c8656
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/tools/acrn-manager/acrnctl.c b/tools/acrn-manager/acrnctl.c
@@ -504,8 +504,13 @@ static int wait_vm_stop(const char * vmname, unsigned int timeout)
 		vmmngr_update();
 
 		s =  vmmngr_find(vmname);
-		if (s->state == VM_CREATED)
-			return 0;
+		if (s == NULL) {
+			printf("%s: vm %s not found\n", __func__, vmname);
+			return -1;
+		} else {
+			if (s->state == VM_CREATED)
+				return 0;
+		}
 
 		sleep(1);
 	} while (t--);