HI,
is there any known reason, why the AVR32 can call the following exception:

exception.s82:

ORG 0x034
// Data Address (Read).
_handle_Data_Address_Read:
rjmp $

I think it has something to do with queue handling. The vApplicationIdleHook() is not blocked or suspended.

Best regards
Karsten

Have you checked for the stack overflowing? Take a look at
http://www.freertos.org/Stacks-and-stack-overflow-checking.html and
http://www.freertos.org/uxTaskGetStackHighWaterMark.html

regards.