Interrupt with avr32 port

I’m using the avr32 port for ap7000 and have made a interrupt that turns a led on and off. Here’s the code: void isr_test(void) {   portENTER_SWITCHING_ISR1();       volatile struct avr32_pio_t *pioa = &AVR32_PIOA;   int status;   status = pioa->pdsr;   status = pioa->isr;     if(status & 0x00000400)   {     controlLED(1, LED_ON);   }   else   {     controlLED(1, LED_OFF);   }   portEXIT_SWITCHING_ISR1(); } I activate interrupts with: INTC_register_interrupt( &isr_test, AVR32_PIOA_IRQ, AVR32_INTC_INT1); gpio_set(&AVR32_PIOA, 10, GPIO_INTERRUPT, GPIO_ON); gpio_set(&AVR32_PIOA, 11, GPIO_INTERRUPT, GPIO_ON); The interrupt works fine and the led turns on and off. But if I press the buttons repeatedly the I suddenly get and unrecoverable exception. I have even tried that the watchdog expires and the debuger quits. Here’s the output from gdb after a unrecoverable exception: 0x00013400 in _handle_Unrecoverable_Exception () (gdb) bt #0  0x00013400 in _handle_Unrecoverable_Exception () #1  0x48c10230 in ?? () (gdb) regs pc: 00013400  lr: 48c10230  sp: 00000044  r12: c0623002 r11: 3003a122  r10: 0230cfe3   r9: 489f0000   r8: 24007ff0 r7: 00000008   r6: 48ed48f0   r5: e3b00001   r4: d553fece r3: fffa48df   r2: 48d048e1   r1: 0230c062   r0: 48d2a505 Is there something wrong with my interrupt function or is there something else that could be causing the problem?

Interrupt with avr32 port

Can someone please comment on my use of portENTER_SWITCHING_ISR. Is it correct to use the macro in an interrupt?