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-rw-r--r--src/libsystemd-bus/sd-bus.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/libsystemd-bus/sd-bus.c b/src/libsystemd-bus/sd-bus.c
index 3ecda17fce..89437c161c 100644
--- a/src/libsystemd-bus/sd-bus.c
+++ b/src/libsystemd-bus/sd-bus.c
@@ -1637,6 +1637,19 @@ _public_ int sd_bus_call(
sd_bus_message_unref(incoming);
return -EIO;
+
+ } else if (incoming->header->serial == serial &&
+ bus->unique_name &&
+ incoming->sender &&
+ streq(bus->unique_name, incoming->sender)) {
+
+ /* Our own message? Somebody is trying
+ * to send its own client a message,
+ * let's not dead-lock, let's fail
+ * immediately. */
+
+ sd_bus_message_unref(incoming);
+ return -ELOOP;
}
/* There's already guaranteed to be room for