On the zVM and/or LPAR can you run:
strace -f stress-ng --aggressive --verbose -t 300 --log-file stress-ng-mmap-fail.log --mmap 0 >& strace.log
and attach the strace.log to the bug.
On the zVM and/or LPAR can you run:
strace -f stress-ng --aggressive --verbose -t 300 --log-file stress- ng-mmap- fail.log --mmap 0 >& strace.log
and attach the strace.log to the bug.