Valgrind Error: failed in UME with error 22
I solved this for my case and submitted a patch:
https://bugs.kde.org/show_bug.cgi?id=290061
If you or anyone else having this problem are building your executable with -pie
, this might help you too.
I don't have an answer, but there is an open bug on this issue.
http://bugs.kde.org/show_bug.cgi?id=138424