From 2733a63e33a1f33cf7ee7cc847314e050b1bdf0e Mon Sep 17 00:00:00 2001 From: Luiz Augusto von Dentz Date: Mon, 9 Sep 2013 11:25:12 +0300 Subject: [PATCH] gdbus/watch: Fix crash when disconnecting from D-Bus When disconnecting from D-Bus a message could be recieved with no sender: Invalid read of size 1 at 0x4A09EE1: strcmp (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) by 0x3B03C386B8: g_str_equal (in /usr/lib64/libglib-2.0.so.0.3600.3) by 0x4065D6: message_filter (watch.c:529) by 0x3B0700F9E5: dbus_connection_dispatch (in /usr/lib64/libdbus-1.so.3.7.4) by 0x4052E7: message_dispatch (mainloop.c:76) by 0x3B03C48962: ??? (in /usr/lib64/libglib-2.0.so.0.3600.3) by 0x3B03C47E05: g_main_context_dispatch (in /usr/lib64/libglib-2.0.so.0.3600.3) by 0x3B03C48157: ??? (in /usr/lib64/libglib-2.0.so.0.3600.3) by 0x3B03C48559: g_main_loop_run (in /usr/lib64/libglib-2.0.so.0.3600.3) by 0x4038C5: client_proxy_removed (test-gdbus-client.c:902) by 0x3B03C6B566: ??? (in /usr/lib64/libglib-2.0.so.0.3600.3) by 0x3B03C6B6E5: ??? (in /usr/lib64/libglib-2.0.so.0.3600.3) Address 0x0 is not stack'd, malloc'd or (recently) free'd --- gdbus/watch.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/gdbus/watch.c b/gdbus/watch.c index 27720e0..0f99f4f 100644 --- a/gdbus/watch.c +++ b/gdbus/watch.c @@ -519,6 +519,8 @@ static DBusHandlerResult message_filter(DBusConnection *connection, dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &arg, DBUS_TYPE_INVALID); /* Sender is always the owner */ + if (sender == NULL) + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; for (current = listeners; current != NULL; current = current->next) { data = current->data; -- 2.7.4