Re: netfilter: nf_tables: Add a null pointer check in two functions

[Markus Elfring]

>> The result from a call of the function “kasprintf” was passed to
>> a subsequent function call without checking for a null pointer before
>> (according to a memory allocation failure).
>> This issue was detected by using the Coccinelle software.
>
> This is correct and I'm fine with the patch if it avoids ringing alarm
> bells somewhere, yet it doesn't fix an actual issue here since the
> allocated buffer is merely passed to vsnprintf() which detects and
> sanitizes %s args being NULL.

Should null pointer tolerance be better indicated for such use cases
by any additional means?

Regards,
Markus