https://bugs.winehq.org/show_bug.cgi?id=56400
--- Comment #6 from Hans Leidekker hans@meelstraat.net --- (In reply to AP from comment #5)
Created attachment 76158 [details] new winedebug log
The patch allocates memory for the input buffer but ISC_REQ_ALLOCATE_MEMORY is about allocating output buffers.