After upgrading approx. 50 machines to 7.4 we discovered a reproducible SegFault of one of our commercial programs we use.

This SegFault does not occur on CentOS 7.3 and it occurs only on Xeon E3-1230 V3, Xeon E5-2690 and Xeon E5-2697 v2.

It does NOT occur on Xeon E5-2697 v3 and Xeon E3-1231 v3, AMD Ryzen and older Core I7-9xx.

It is not dependent of the kernel, we switched back to an CentOS 7.3
kernel and forward to an Linux 4.11 kernel without success.

When we run CentOS 7.3 as a guest on CentOS 7.4 in VMWare on affected CPUs the Segmentation Fault does not occur.

Is there any processor specific optimzation dependency on the 7.4 glibc or any libraries I don’t know? And what to do against it?

Thank you in advance!

Gerhard Schneider