[Beowulf] RHEL7 kernel update for L1TF vulnerability breaks RDMA

Chris Samuel chris at csamuel.org
Thu Aug 16 21:47:37 PDT 2018

Hi all,

Just a heads up that the 3.10.0-862.11.6.el7.x86_64 kernel from RHEL/CentOS 
that was released to address the most recent Intel CPU problem "L1TF" seems to 
break RDMA (found by a colleague here at Swinburne).   The discovery came 
about when testing the new kernel on a system running Lustre.


Stanford have reported it to Red Hat, but the BZ entry is locked due to its 
relationship with L1TF.


Hope this helps folks out there..

All the best,
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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