In STM32Cube FW F7 V1.1.12.0 LwIP_HTTP_Server_Netconn_RTOS main.c
After the first block of code setting up the fields of the struct argument to HAL_MPU_ConfigRegion(&MPU_InitStruct); it appears that there is a missing invocation of the above mentioned function (by comparison both with following code, and the equivalent code for the same application on the Disco F746).
(Cross-posted after finding this bug-report page.)
