Public bug reported:

mstflint does not seem able to query a device by name when its regular
driver is loaded and the kernel is in lockdown mode. This worked in
previous releases.

For example:

root@test:/home/test# ibv_devinfo | grep hca_id
hca_id: mlx5_0
hca_id: mlx5_1

root@test:/home/test# mstconfig -d mlx5_0 query
-E- Failed to open the device

Discussion of this bug is in
https://github.com/Mellanox/mstflint/issues/1371 which notes that 1.34
fixes the issue due to an unrelated change refactoring the errant line
of code.

The vfio access path works fine, but since this relies on the mlx driver
to be unloaded it is not a great experience. Unfortunately this newly
affects 26.4 LTS.

** Affects: mstflint (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2158203

Title:
  mstflint 4.33 cannot query device by IB name

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