bus: keep kernel bus fd around during entire life-time of bus

We need this since we might need to invoke the release ioctl for
messages. Since we don't want to add any locking for that we simply keep
a reference to the bus and then rely that the fd stays valid all the
time.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/libsystemd-bus/bus-message.c b/src/libsystemd-bus/bus-message.c
index c72b52d546..e531dec5cd 100644
--- a/src/libsystemd-bus/bus-message.c
+++ b/src/libsystemd-bus/bus-message.c
@@ -128,14 +128,14 @@ static void message_free(sd_bus_message *m) {
         if (m->release_kdbus)
                 ioctl(m->bus->input_fd, KDBUS_CMD_MSG_RELEASE, m->kdbus);
 
+        if (m->bus)
+                sd_bus_unref(m->bus);
+
         if (m->free_fds) {
                 close_many(m->fds, m->n_fds);
                 free(m->fds);
         }
 
-        if (m->bus)
-                sd_bus_unref(m->bus);
-
         if (m->iovec != m->iovec_fixed)
                 free(m->iovec);