Re: [PATCH 5.14 018/334] nbd: add the check to prevent overflow in __nbd_ioctl()

[Linus Torvalds]

On Mon, Sep 13, 2021 at 2:15 PM Nick Desaulniers
<ndesaulniers@xxxxxxxxxx> wrote:
>
> Sorry wrong diff:

Well, this second diff was seriously whitespace-damaged and hard to
read, but while it seems to be the same number of lines, it sure looks
a lot more readable in this format.

Except I think that

                default: dividend / divisor);

should really have parentheses around both of those macro arguments.

That's a preexisting problem, but it should be fixed while at it.

I'm also not sure why that (again, preexisting) BUILD_BUG_ON_MSG()
only checks the size of the dividend, not the divisor. Very strange.
But probably not worth worrying about.

               Linus