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Date: Fri, 9 Mar 2018 10:35:55 -0800
From: Kees Cook <>
To: Eric Anholt <>
Cc: "Tobin C. Harding" <>, Greg Kroah-Hartman <>, 
	Stefan Wahren <>, 
	Kernel Hardening <>, LKML <>,, Tycho Andersen <>
Subject: Re: [PATCH] staging: vchiq_arm: Clear VLA warning

On Fri, Mar 9, 2018 at 10:11 AM, Eric Anholt <> wrote:
> "Tobin C. Harding" <> writes:
>> The kernel would like to have all stack VLA usage removed[1].  The
>> array here is fixed (declared with a const variable) but it appears
>> like VLA to the compiler.  We can use a pre-processor define to quiet
>> the compiler.
>> [1]:
>> Signed-off-by: Tobin C. Harding <>
>> ---
>> The name of this constant may need changing, there is already a
>> pre-processor constant VCHIQ_MAX_SERVICES
> Maybe just use ARRAY_SIZE(local_max_services) and not have the #define?

I think you mean ARRAY_SIZE(service_data) ? In that case, yeah, it
seems like a raw "64" for the array size can be used instead.


Kees Cook
Pixel Security

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