According to https://github.com/adulau/dcfldd/issues/2, the usage of errlog= parameter causes dcfldd to segfault, as presented in the example on that repository (copied here verbatim):
# dcfldd if=/dev/zero of=test.raw bs=1 count=512 errlog=error.log
512 blocks (0Mb) written.
512+0 records in
Segmentation fault (core dumped)
According to https://github.com/adulau/dcfldd/issues/2, the usage of
errlog=parameter causes dcfldd to segfault, as presented in the example on that repository (copied here verbatim):