lkml.org 
[lkml]   [2019]   [Aug]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCHv2] lib/test_kasan: add roundtrip tests
From
Date


On 8/19/19 7:14 PM, Mark Rutland wrote:
> In several places we need to be able to operate on pointers which have
> gone via a roundtrip:
>
> virt -> {phys,page} -> virt
>
> With KASAN_SW_TAGS, we can't preserve the tag for SLUB objects, and the
> {phys,page} -> virt conversion will use KASAN_TAG_KERNEL.
>
> This patch adds tests to ensure that this works as expected, without
> false positives which have recently been spotted [1,2] in testing.
>
> [1] https://lore.kernel.org/linux-arm-kernel/20190819114420.2535-1-walter-zh.wu@mediatek.com/
> [2] https://lore.kernel.org/linux-arm-kernel/20190819132347.GB9927@lakrids.cambridge.arm.com/
>
> Signed-off-by: Mark Rutland <mark.rutland@arm.com>
> Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
> Tested-by: Andrey Konovalov <andreyknvl@google.com>
> Cc: Alexander Potapenko <glider@google.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
> Cc: Dmitry Vyukov <dvyukov@google.com>
> Cc: Will Deacon <will.deacon@arm.com>
> ---


Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>

\
 
 \ /
  Last update: 2019-08-19 19:25    [W:0.055 / U:0.260 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site