linux-kernel - Re: [PATCH] kasan: Add explicit preconditions to kasan

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Message-ID: <773e84d1-2650-dfc8-6eff-23842b015dcd@arm.com>
Date:   Thu, 21 Jan 2021 11:34:01 +0000
From:   Vincenzo Frascino <vincenzo.frascino@....com>
To:     Andrey Konovalov <andreyknvl@...gle.com>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        LKML <linux-kernel@...r.kernel.org>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Leon Romanovsky <leonro@...lanox.com>,
        Alexander Potapenko <glider@...gle.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Dmitry Vyukov <dvyukov@...gle.com>
Subject: Re: [PATCH] kasan: Add explicit preconditions to kasan_report()

Hi Andrey,

On 1/19/21 8:56 PM, Andrey Konovalov wrote:
>>      return (is_vmalloc_addr(addr) || virt_addr_valid(addr));
> Do we need is_vmalloc_addr()? As we don't yet have vmalloc support for HW_TAGS.

It is not necessary but it does not hurt, since we are going to add vmalloc
anyway at some point, I would keep it here.

-- 
Regards,
Vincenzo