Cannot access memory at address xxx, stack overflow management ?

It is quite hard to get a 'memory address fault' message.

The mmu fault handler for an OS might generate one.

The MPU interrupt handler might (if the MPU is enabled).

It is possible to enable a 'misaligned transfer' interrupt - whose handler might generate such a message.

If you try even harder (and are psychic) you can enable an interrupt for accesses to unknown addresses on the Avalon bus, but usually reads just return ~0.