fpga2hps_fifo driver- fetch data size limited to 32768 B (around)

NOTE: I am not using the fpga2hps_fifo_test application SW to perform this test!

I want to fetch data from the driver and write them into a file. With the following command I wait for data (first terminal) dd if=/dev/fpga2hps_fifo of=/mnt/data/fuffa.txt count=4096 bs=1

With this command I select the source (since the fpga2hps_fifo reset is released by the driver opening (second terminal) bregacc wr 0xff201020 0x00000181 0x00000fff

I expect a file named fuffa.txt in mnt/data/ folder of 4096B.

Most of the times it is like this, but if I repeat the command several times, the system crashes.

This effect is more visible in case the required number of Bytes to store in the file is higher