linux-kernel - Re: [PATCH] kasan: infer the requested size by scanning shadow memory

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Message-ID: <CA+fCnZfhH+XRU-Ywvb6WThjmwuSODfNV5fNxDpHY1enibdNYSQ@mail.gmail.com>
Date:   Mon, 9 Jan 2023 21:55:25 +0100
From:   Andrey Konovalov <andreyknvl@...il.com>
To:     Kuan-Ying Lee (李冠穎) 
        <Kuan-Ying.Lee@...iatek.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        Qun-wei Lin (林群崴) 
        <Qun-wei.Lin@...iatek.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Chinwen Chang (張錦文) 
        <chinwen.chang@...iatek.com>,
        "dvyukov@...gle.com" <dvyukov@...gle.com>,
        "kasan-dev@...glegroups.com" <kasan-dev@...glegroups.com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "ryabinin.a.a@...il.com" <ryabinin.a.a@...il.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "vincenzo.frascino@....com" <vincenzo.frascino@....com>,
        "glider@...gle.com" <glider@...gle.com>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>
Subject: Re: [PATCH] kasan: infer the requested size by scanning shadow memory

On Mon, Jan 9, 2023 at 6:02 AM Kuan-Ying Lee (李冠穎)
<Kuan-Ying.Lee@...iatek.com> wrote:
>
> > Let's leave the first two lines as is, and instead change the second
> > two lines to:
> >
> > The buggy address is located 0 bytes to the right of
> >  requested 184-byte region [ffff888017576600, ffff8880175766c0)
>
> Did you mean region [ffff888017576600, ffff8880175766b8)?

Yes! Forgot to change the range. The idea is to refer to the requested
size in these two lines of the report.