[Beowulf] RHEL7 kernel update for L1TF vulnerability breaks RDMA
joe.landman at gmail.com
Sat Aug 18 12:32:12 PDT 2018
FWIW: it looks like this is the CVE that keeps on giving. Yesterday some
of the mitigation hit, and this morning a new rev of kernel with a
single CVE patch came out. Don't know when it might show up in distro
kernels, but its already in mine.
We are not done with Spectre/Meltdown vulns by any stretch (no insider
info, just a hypothesis).
On 08/18/2018 03:19 PM, Jeff Johnson wrote:
> With the spate of security flaws over the past year and the impacts
> their fixes have on performance and functionality it might be
> worthwhile to just run airgapped.
> On Thu, Aug 16, 2018 at 22:48 Chris Samuel <chris at csamuel.org
> <mailto:chris at csamuel.org>> wrote:
> Hi all,
> Just a heads up that the 3.10.0-862.11.6.el7.x86_64 kernel from
> 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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e: joe.landman at gmail.com
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