[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.

https://jira.whamcloud.com/browse/LU-11257

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

https://bugzilla.redhat.com/show_bug.cgi?id=1618452

Hope this helps folks out there..

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





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