This bug is awaiting verification that the linux-
aws-6.8/6.8.0-1018.19~22.04.1 kernel in -proposed solves the problem.
Please test the kernel and update this bug with the results. If the
problem is solved, change the tag 'verification-needed-jammy-linux-
aws-6.8' to 'verification-done-jammy-linux-aws-6.8'. If the problem
still exists, change the tag 'verification-needed-jammy-linux-aws-6.8'
to 'verification-failed-jammy-linux-aws-6.8'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-jammy-linux-aws-6.8-v2 
verification-needed-jammy-linux-aws-6.8

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Packages, which is subscribed to linux-aws in Ubuntu.
https://bugs.launchpad.net/bugs/2080414

Title:
  [N][AWS]Backport x86/kaslr fix impacting ML/HPC workloads

Status in linux-aws package in Ubuntu:
  Fix Released
Status in linux-aws source package in Noble:
  Fix Committed

Bug description:
  SRU Justification:

  [Impact]

  EC2 team discovered a Linux bug during ML/HPC workload testing on P5
  instances. The issue is described at
  https://lore.kernel.org/all/87ed6soy3z.ffs@tglx/ ("iounmap() on x86
  occasionally fails to unmap because the provided valid ioremap address
  is not below high_memory.").

  [Fix]

  This is fixed by upstream commit
  ea72ce5da22806d5713f3ffb39a6d5ae73841f93:

  
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ea72ce5da22806d5713f3ffb39a6d5ae73841f93

  [Test Plan]

  AWS tested

  [Where problems could occur]

  If there was code that made incorrect assumptions on how memory was
  laid out and used, it might break the functionality, but seeing as
  this is fixing an error, the chances of that should be fairly low.

  
  [Other Info]
  SF #00392654

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