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We use 'LD_PRELOAD=/usr/lib64/nosync/nosync.so' in mock to speedup chroot
installation.  But newly, with openssl-libs-1.1.1g-1.el8.x86_64, anything
that links against openssl segfaults early.

With openssl-libs-1.1.1c-15.el8.x86_64 it worked just fine.  This breaks
installation of mock chroot from mock bootstrap chroot with 8.3.0 build
chroots where is the new openssl.

You can install nosync.so e.g. from
https://copr.fedorainfracloud.org/coprs/praiskup/test-nosync/

Weird thing is that, despite the new openssl is there, this bug isn't
reproducible in Fedora chroots (so perhaps this is related to some
rhel downstream patch).

The reproducers are e.g.
LD_PRELOAD=/usr/lib64/nosync/nosync.so curl
LD_PRELOAD=/usr/lib64/nosync/nosync.so rpm

This is a serious bug in the nosync - see the bug 1837809 investigation.

There is no way around the requirement of doing the open() call in constructor in OpenSSL.

We will discuss it within our team but most probably this is going to be WONTFIXed and must be fixed in the nosync.

The fixed nosync packages are in rawhide and testing repos for F32 and F31 - nosync-1.1-8.fcxx

I am closing this as NOTABUG.

Thanks Florian for helping with the investigation and providing the fix for nosync.