The prefetchers were instatiated as class variables instead of instance variables. This change fixes the problem Change-Id: I7263c9e7ddb138d2f9ad10024ea7f0e7d860dda9 Signed-off-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/49430 Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu> Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu> Tested-by: kokoro <noreply+kokoro@google.com>