Hi, I noted that there are two cluster_data member in block/qcow.c, one in BDRVQcowState, the other in QCowAIOCB. The last one is used in qcow_aio_write_cb to hold buffer for encrypt the cluster before write but I cannot find any related qemu_free while I can find many place where BDRVQcowState::cluster_data is freed. It seems to me a leak but I don't understand why nobody reported this problem before (it should happen at every write so anybody using qcow encrypted should rapidly see this problem). Perhaps there is a sort of garbage collector I'm not aware?
Frediano Ziglio
