Messages in this thread | | | Subject | Re: [PATCHv2] lib/test_kasan: add roundtrip tests | From | Andrey Ryabinin <> | Date | Mon, 19 Aug 2019 20:25:03 +0300 |
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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>
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