Re: [PATCH v15 2/5] random: add vgetrandom_alloc() syscall

[Florian Weimer]

* Jason A. Donenfeld:

> Libc is expected to allocate a chunk of these on first use, and then
> dole them out to threads as they're created, allocating more when
> needed. The returned address of the first state may be passed to
> munmap(2) with a length of `num * size_per_each`, in order to deallocate
> the memory.

I think “first use” actually means “processs start” here?  We don't have
a way to report failure from arc4random and similar interfaces.

Thanks,
Florian