bus: fix hello ioctl buffer size calculation

diff --git a/src/libsystemd-bus/bus-kernel.c b/src/libsystemd-bus/bus-kernel.c
index 7997c1fc57e2848c3057f7dcaf0de2e07671bd2f..05544e1e477403716292383feef0cdcaaa2ab2e1 100644 (file)
--- a/src/libsystemd-bus/bus-kernel.c
+++ b/src/libsystemd-bus/bus-kernel.c
@@ -332,7 +332,7 @@ int bus_kernel_take_fd(sd_bus *b) {
         sz = ALIGN8(offsetof(struct kdbus_cmd_hello, items));
 
         if (b->fake_creds_valid)
-                sz += ALIGN8(offsetof(struct kdbus_item, creds));
+                sz += ALIGN8(offsetof(struct kdbus_item, creds)) + sizeof(struct kdbus_creds);
 
         if (b->fake_label) {
                 l = strlen(b->fake_label);