This bug is awaiting verification that the linux-
azure-4.15/4.15.0-1158.173 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-bionic' to
'verification-done-bionic'. If the problem still exists, change the tag
'verification-needed-bionic' to 'verification-failed-bionic'.

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-bionic-linux-azure-4.15 verification-needed-bionic

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-azure in Ubuntu.
https://bugs.launchpad.net/bugs/1996093

Title:
  [RELEASE BLOCKER] Call trace during nvme storage performance test in
  bionic/linux-azure 4.15.0-1154

Status in linux-azure package in Ubuntu:
  New
Status in linux-azure-4.15 package in Ubuntu:
  New
Status in linux-azure source package in Bionic:
  Invalid
Status in linux-azure-4.15 source package in Bionic:
  In Progress
Status in linux-azure source package in Focal:
  In Progress
Status in linux-azure-4.15 source package in Focal:
  Invalid

Bug description:
  SRU Justification

  [Impact]

  Hypervisor only allocates interrupts to happen on a single physical
  GPU, which can lead to CPU soft locks when using PCI NVME under heavy
  load.

  [Test Case]

  Microsoft tested

  [Where things could go wrong]

  Hypervisor PCI driver may not load correctly. Patch did not apply
  cleanly and could lead to merge conflicts once the upstream patch is
  pulled in.

  [Other Info]

  SF: #00347669

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