About
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The Core-2-Duo intel CPU has a limited set of features and is falling
behind. The RH build of CS9 includes glibc which uses some new op-codes not
supported in this CPU.

ldconfig & iconvconfig are from glibc, they both gave invalid opcode errors

// var/log/messages
Dec 18 13:02:43 al8xen kernel: traps: ldconfig[5201] trap invalid opcode ip:7f0fce51e901 sp:7ffd5d67ec70 error:0 in ldconfig[7f0fce50f000+d3000]
Dec 18 13:02:44 al8xen kernel: traps: iconvconfig[5211] trap invalid opcode ip:7f0b77be6401 sp:7ffc10f9ba40 error:0 in libc.so.6[7f0b77bd3000+176000]

// problem has been seen in ubuntu since the avx opcode was first seen:
https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/979003

The workaround is to use these packages:
glibc-2.34-7.fc35.x86_64.rpm
glibc-common-2.34-7.fc35.x86_64.rpm
glibc-gconv-extra-2.34-7.fc35.x86_64.rpm
glibc-langpack-en-2.34-7.fc35.x86_64.rpm

they are available in the virt-stream9 repo on hldns.com *.45

in /etc/dnf/dnf.conf
exclude=glibc*el9*

With these fc35 packages we did both a dnfbootstrap and a mock chroot (centos-stream-9-x86_64).

Author
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PryMar56
Dec 2021