Re: [PATCH sparc-next] sunvdc: Remove VLA usage

From: David Miller
Date: Mon Oct 08 2018 - 14:10:49 EST


From: Kees Cook <keescook@xxxxxxxxxxxx>
Date: Mon, 8 Oct 2018 08:46:51 -0700

> In the quest to remove all stack VLA usage from the kernel[1], this moves
> the math for cookies calculation into macros and allocates a fixed size
> array for the maximum number of cookies and adds a runtime sanity check.
> (Note that the size was always fixed, but just hidden from the compiler.)
>
> [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@xxxxxxxxxxxxxx
>
> Cc: Jens Axboe <axboe@xxxxxxxxx>
> Cc: linux-block@xxxxxxxxxxxxxxx
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>

Applied.