This bug is awaiting verification that the linux-azure-fde/6.8.0-1043.50
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-noble-linux-azure-fde' to 'verification-done-
noble-linux-azure-fde'. If the problem still exists, change the tag
'verification-needed-noble-linux-azure-fde' to 'verification-failed-
noble-linux-azure-fde'.


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-noble-linux-azure-fde-v2 
verification-needed-noble-linux-azure-fde

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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/2127705

Title:
  azure: backport "hv_netvsc: fix loss of early receive events from host
  during channel open"

Status in linux-azure package in Ubuntu:
  In Progress
Status in linux-azure source package in Jammy:
  Fix Committed
Status in linux-azure source package in Noble:
  Fix Committed
Status in linux-azure source package in Plucky:
  Fix Committed

Bug description:
  BugLink: https://bugs.launchpad.net/bugs/2127705

  [Impact]

  A race condition in the hv_netvsc module can lead to a lockup where
  the RX queue of the network device becomes stuck, degrading the
  performance for users of the Azure kernel.

  [Fix]

  The following fix was introduced in 6.17:

  
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9448ccd85336

  Backport it to the P/N/J:azure trees (Questing already has it) in
  order to fix the issue for users of the linux-azure kernel.

  [Test plan]

  Build tested only; Microsoft will validate the bug fix.

  [Where problems could occur]

  Issues with this patch could cause hangs, lockups or generally some
  kind of network performance degradation for virtual machines running
  on top of Hyper-V.

  [Other info]
  SF #00418032

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