sd-bus: react properly to EOVERFLOW by generating a log message about dropped broadca...

[elogind.git] / src / libsystemd / sd-bus / bus-kernel.c

diff --git a/src/libsystemd/sd-bus/bus-kernel.c b/src/libsystemd/sd-bus/bus-kernel.c
index 27a59109ba3c9ecaef024a4243f874d62ef9a45c..e03e4471cec11e2dd15dbe47747bc19ce3f3139f 100644 (file)
--- a/src/libsystemd/sd-bus/bus-kernel.c
+++ b/src/libsystemd/sd-bus/bus-kernel.c
@@ -911,13 +911,12 @@ int bus_kernel_connect(sd_bus *b) {
 }
 
 static void close_kdbus_msg(sd_bus *bus, struct kdbus_msg *k) {
-        struct kdbus_cmd_free cmd;
+        struct kdbus_cmd_free cmd = {};
         struct kdbus_item *d;
 
         assert(bus);
         assert(k);
 
-        cmd.flags = 0;
         cmd.offset = (uint8_t *)k - (uint8_t *)bus->kdbus_buffer;
 
         KDBUS_ITEM_FOREACH(d, k, items) {
@@ -1186,6 +1185,11 @@ int bus_kernel_read_message(sd_bus *bus, bool hint_priority, int64_t priority) {
                 if (errno == EAGAIN)
                         return 0;
 
+                if (errno == EOVERFLOW) {
+                        log_debug("%s: kdbus reports %" PRIu64 " dropped broadcast messages, ignoring.", strna(bus->description), (uint64_t) recv.dropped_msgs);
+                        return 0;
+                }
+
                 return -errno;
         }