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SubjectRe: [PATCH] mm/slab: Do not hash pointers when debugging slab
On Thu, Dec 7, 2017 at 3:13 AM, Christopher Lameter <> wrote:
> On Thu, 7 Dec 2017, Geert Uytterhoeven wrote:
>> If CONFIG_DEBUG_SLAB/CONFIG_DEBUG_SLAB_LEAK are enabled, the slab code
>> prints extra debug information when e.g. corruption is detected.
>> This includes pointers, which are not very useful when hashed.
>> Fix this by using %px to print unhashed pointers instead.
> Acked-by: Christoph Lameter <>
> These SLAB config options are only used for testing so this is ok.

Most systems use SLUB so I can't say how common CONFIG_DEBUG_SLAB is.
(Though, FWIW with SLUB, CONFIG_SLUB_DEBUG is very common.)


Kees Cook
Pixel Security

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