FreeRTOS - Adding MPU support for tasks

Hi..

I am trying to test MPU support in FreeRTOS on STM32L476G-EVAL board.

In addition to common files like tasks.c, queue.c etc., I added below files for MPU support to my project.

1.) port.c (for ARM_CM4_MPU)

2.) mpu_wrappers.c

3) event_groups.c

And also modified linker file, adding modified memory layout needed by this port.c file for MPU configuration.

But, when i create a restricted task using "xTaskCreateRestricted" API, it crashes inside "prvAddNewTaskToReadyList".

What else am i missing , with regards to configuring FreeRTOS for MPU support for tasks.

Below is the stack for this crash (if it helps):

Thread #1 (Suspended : Signal : SIGTRAP:Trace/breakpoint trap)   

debugHardfault() at stm32l4xx_it.c:97 0x80042ae   

<signal handler called>() at 0xfffffff9   

prvAddNewTaskToReadyList() at tasks.c:1,030 0x8000c9e   

xTaskCreateRestricted() at tasks.c:663 0x8000e16   

MPU_xTaskCreateRestricted() at mpu_wrappers.c:104 0x80069b0   

main() at main.c:156 0x8004162