Segmentation Fault When Registering GPIO Interrupt Handler - Segmentation Fault When Registering GPIO Interrupt Handler Description In the Linux implementation included with the Golden System Reference Design, if you attempt to register an interrupt handler for a nonexistent GPIO device, you will see error messages similar to the following: Unable to handle kernel NULL pointer dereference at virtual address 00000028 ... Segmentation fault These errors indicate a kernel segmentation fault. Resolution With the Golden System Reference Design, ensure that you attempt to register interrupts only for existing GPIO devices. Alternatively, upgrade to v13.1 or later. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] 13.1 13.0 ['Cyclone® V FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']