On Wed, Nov 14, 2018 at 08:33:06AM -0700, Jens Axboe wrote: > It's measurable. It doesn't defeat the const at all, the mq_ops > is still const and is never modified outside of when the queue > is allocated. The only difference is of course that it is no > longer residing in a read only mapped section, which is a shame.
And the separate section is very much the point of the const. Without it attackers can easily overwrite the function pointer and use it for exploits, as the C const attribute by itself doesn't protect from that in any way. But once it is in a read-only section it can't easily be modified.
