[LTP] [RFC PATCH 1/9] lib: Add support for guarded buffers

[Jan Stancek]

----- Original Message -----
> This commit adds a support for guarder buffers. Guarded buffer is a
> buffer allocated so that there is PROT_NONE page immediatelly after the
> end of the buffer i.e. any access after the buffer generates
> SEGFAULT/EFAULT etc.
> 
> The library is hooked into the tst_test structure so that all you need
> is to fill up an NULL terminated array of buffer pointers and sizes to
> get the respective buffers allocated. The library supports allocating
> memory in test runtime as well as well as allocating more complex
> buffers, which currently are iovec vectors.

Runtime alloc in loop could be an issue, do we need also runtime free?