>>>> I would like to detect that a corresponding null pointer check would be 
>>>> missing
>>>> (before the data can be used for further data processing).
>>> * x = kmemdup(...);
>>>   ... when != x
>>> (
>>>   x->f
>>> |
>>>   f(...,<+...x...+>,...)
>>> )
>> This SmPL search approach does not work as expected for
>> the mentioned source file “drivers/gpu/drm/imx/parallel-display.c”.
> I have better things to do than to run your tests.  If you have a problem,
> say what the problem is an show the code that shows a problem.

A questionable source code place is just not pointed out
by this analysis approach.
No error message is displayed on my test system.

So I would appreciate to find a better solution together.

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