[CentOS] Spurious Segmentation Fault after upgrade to 7.4

Fri Sep 15 08:19:24 UTC 2017
Gerhard Schneider <gs at ilsb.tuwien.ac.at>

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

Gerhard Schneider
Institute of Lightweight Design and         e-Mail: gs at ilsb.tuwien.ac.at
Structural Biomechanics (E317)                   Tel.: +43 1 58801 31716
TU Wien / Vienna / Austria                       Fax:  +43 1 58801 31799
A-1060 Wien, Getreidemarkt 9/BE02      http://www.ilsb.tuwien.ac.at/~gs/

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