Re: WARNING: kmemcheck: Caught 32-bit read from uninitialized memory (f6f6e1a4), by kmemleak's scan_block()

From: Pekka Enberg
Date: Tue Aug 25 2009 - 04:48:33 EST

Hi Ingo,

On Tue, Aug 25, 2009 at 11:40 AM, Ingo Molnar<mingo@xxxxxxx> wrote:
> There's already a couple of exclusion rules in kmemcheck:
> menuconfig KMEMCHECK
>        bool "kmemcheck: trap use of uninitialized memory"
>        depends on DEBUG_KERNEL
>        depends on !X86_USE_3DNOW
>        depends on SLUB || SLAB
>        depends on !CC_OPTIMIZE_FOR_SIZE
>        depends on !FUNCTION_TRACER
> such type of Kconfig driven exclusion is usually a somewhat lame way
> to express limitations in the software.
> CC_OPTIMIZE_FOR_SIZE is an externality that cannot be eliminated,
> but the others could be improved - and we should definitely not
> extend the list of exclusions.

Yup, agreed.
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