[libvirt] [sandbox] random hang in g_poll

Hello, I am building a tool on top of libvirt-sandbox and I've noticed that there are random hangs in the g_main_loop_run call. Normally, only very rarely does it actually hang, the problem appears let's say 4 out of 5 times when I run the program under valgrind or when I am using an LD_PRELOAD for checking gobject ref counts (gobject-list). I ran these directly on virt-sandbox to ensure that it's not from my code and it still happens. Attached is the output of a run that hangs followed by the backtrace. As I'm new to the gmainloop mechanisms I don't really know where to start debugging. Any ideas would be appreciated. Thanks, Radu Caragea.