[Bug 1524069] Re: [trusty] 3.13.0-68 raid6-pq panic in raid6_avx21_gen_syndrome() while probing grub devices (was: Xenial KVM: updating Trusty guest from 3.13.0-68 to 3.13.0-71 causes kernel exception)

[Andy Whitcroft]

So the host exposing some of the physical cpu characteristics is
triggering use of this specific syndrome generator (which makes sense as
it is h/w specific) raid6_avx21_gen_syndrome().

** Summary changed:

- Xenial KVM: updating Trusty guest from 3.13.0-68 to 3.13.0-71 causes kernel exception
+ [trusty] 3.13.0-68 raid6-pq panic in raid6_avx21_gen_syndrome() while probing grub devices (was: Xenial KVM: updating Trusty guest from 3.13.0-68 to 3.13.0-71 causes kernel exception)

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Title:
  [trusty] 3.13.0-68 raid6-pq panic in raid6_avx21_gen_syndrome() while
  probing grub devices (was: Xenial KVM: updating Trusty guest from
  3.13.0-68 to 3.13.0-71 causes kernel exception)

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