RO data

[Nicholas Mc Guire]

HI !

devm_kstrdup_const() will check if the pointer passed
in is in the RO data section with is_kernel_rodata()
But this is simply a check for address range - so how
can one find out at code level reliably what will be in
that RO data - or is that in principle not possible ?

The background of this question is that there are cases
of devm_kstrdup() that do not check the return value
which can be NULL and are not safe - but rather than
simply checking the return some look like they could
be converted to devm_kstrdup_const() which would solve
the issue in a better way e.g.
drivers/hwtracing/coresight/of_coresight.c:of_coresight_parse_endpoint()
is such a case - so is there are reliable way to
assure that some object is in the RO section ? or
must one simply assume that it could be RW ?

thx!
hofrat