Add better output on failure cases when kernel_taint_test.py is run

Enhancement Proposal

The current Kernel Taint Test script needs some further explanatory statements in the output to be more clear on what things need to be tested:

Current output looks like this: Kernel taint value is 4609 Taint bit value: 0 (proprietary module was loaded)

Proprietary modules found, but they are expected and OK Taint bit value: 9 (kernel issued warning) Taint bit value: 12 (externally-built ('out-of-tree') module was loaded)
Out of Tree modules found, but they are expected and OK

which makes the assumption that a reviewer knows that value 9 actually needs investigation. It does provide helpful explanations that 0 and 12 are known and OK, so we should extend that to also explain that 9 (or any unknown / non-OK value) needs further investigation before issuing a certificate.

canonical / checkbox

Add better output on failure cases when kernel_taint_test.py is run #917

Enhancement Proposal