> > And I print the data in usbredir_write_callback() & usbredir_free_write_cb_data() > > ... > > write_data = 100 > > free_data = 100 > > write_data = 17 > > write_data = 17 > > write_data = 4 > > write_data = 5 > > write_data = 11 > > free_data = 17 > > free_data = 238(error) > > > What are these numbers you are printing? It would probably be more useful > to print the data buffer pointer instead using %p. > write_data indicates that the parameter uint8_t *data are sent into int usbredir_write_callback(void *user_data, uint8_t *data, int count). And free_data indicates the parameter uint8_t *data are sent into void usbredir_free_write_cb_data(uint8_t *data, void *user_data). The address corresponds to the above data: ... write_data = 06CA67A0 free_data = 06CA67A0 write_data = 06DD23C8 write_data = 06DD23C8 write_data = 06E137C8 write_data = 06E138E8 write_data = 06DD28C8 free_data = 06DD23C8 free_data = 06DD23C8(error) _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/spice-devel