This bug is awaiting verification that the linux-azure/5.15.0-1040.47
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' to 'verification-done-jammy'. If the
problem still exists, change the tag 'verification-needed-jammy' to
'verification-failed-jammy'.

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-azure

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https://bugs.launchpad.net/bugs/2015097

Title:
  Kernel crash during Mellanox performance testing

Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Fix Released

Bug description:
  [Impact]

  * When performance testing using Mellanox driver, an early decrement
  within an if condition rather than as a result of an if condition is
  causing null pointer crashes.

  [Fix]

  * Clean cherry-pick from upstream 
(https://lore.kernel.org/netdev/20220503044209.622171-10-sae...@nvidia.com/)
  * Change landed v5.19 upstream, Kinetic onward not affected

  [Test Case]

  * Compile test
  * Boot test
  * Performance test

  [Where things could go wrong]

  * Regression risk is low, localized fix, purely fixes incorrect logic

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