sharkcz added a new comment to an issue you are following:
``
Few years back it was a generic issue in kernel in futex syscall, not specific to s390x.
The symptoms were same/very similar. If things work fine in F-30, then one of the suspects
might be glibc and some threading changes. On the other hand, a month or so I wasn't
able to reproduce that in a local build, but will retry again.
``
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https://pagure.io/releng/issue/8711