Changed the description as follows:
=================================
mm, kasan: account for object redzone in SLUB's nearest_obj()
When looking up the nearest SLUB object for a given address, correctly
calculate its offset if SLAB_RED_ZONE is enabled for that cache.
Previously, when KASAN had detected an error on an object from a cache
with SLAB_RED_ZONE set, the actual start address of the object was
miscalculated, which led to random stacks having been reported.
Fixes: 7ed2f9e663854db ("mm, kasan: SLAB support")
Signed-off-by: Alexander Potapenko <[email protected]>
=================================
To avoid sending both patches and the cover page again, I'm going to
wait for other comments.
On Tue, Jul 12, 2016 at 10:02 PM, Andrew Morton
<[email protected]> wrote:
> On Tue, 12 Jul 2016 20:12:44 +0200 Alexander Potapenko <[email protected]>
> wrote:
>
>> When looking up the nearest SLUB object for a given address, correctly
>> calculate its offset if SLAB_RED_ZONE is enabled for that cache.
>
> What are the runtime effects of this fix? Please always include this
> info when fixing bugs so that others can decide which kernel(s) need
> patching.
>
--
Alexander Potapenko
Software Engineer
Google Germany GmbH
Erika-Mann-Straße, 33
80636 München
Geschäftsführer: Matthew Scott Sucherman, Paul Terence Manicle
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
