Re: [PATCH] drm/msm/adreno: Remove VLA usage

[Arnd Bergmann]

On Fri, Jun 29, 2018 at 8:48 PM, Kees Cook <keescook@xxxxxxxxxxxx> wrote:
> In the quest to remove all stack VLA usage from the kernel[1], this
> switches to using a kasprintf()ed buffer. Return paths are updated
> to free the allocation.
>
> [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@xxxxxxxxxxxxxx
>
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/adreno/a5xx_gpu.c   |  7 +++++--
>  drivers/gpu/drm/msm/adreno/adreno_gpu.c | 28 +++++++++++++++++--------
>  2 files changed, 24 insertions(+), 11 deletions(-)

This seems fine, though using a fixed-length string is probably just
as well here,
given that the 'fwname' variable is always set to the constant string
"a530_zap.mdt"
at the moment, which is not very long.

Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>

       Arnd