linux-kernel - Re: [PATCH] mm: kasan: Fix input of vmalloc_to

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Message-ID: <CA+fCnZf_Aphbje1aJCyp0Sarz3DgbfGLXHLisiHjT=ttS6pjWg@mail.gmail.com>
Date:   Wed, 25 May 2022 19:43:17 +0200
From:   Andrey Konovalov <andreyknvl@...il.com>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>
Cc:     Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] mm: kasan: Fix input of vmalloc_to_page()

On Wed, May 25, 2022 at 1:58 PM Kefeng Wang <wangkefeng.wang@...wei.com> wrote:
>
> When print virtual mapping info for vmalloc address, it should pass
> the addr not page, fix it.
>
> Fixes: c056a364e954 ("kasan: print virtual mapping info in reports")
> Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
> ---
>  mm/kasan/report.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/kasan/report.c b/mm/kasan/report.c
> index 199d77cce21a..b341a191651d 100644
> --- a/mm/kasan/report.c
> +++ b/mm/kasan/report.c
> @@ -347,7 +347,7 @@ static void print_address_description(void *addr, u8 tag)
>                                va->addr, va->addr + va->size, va->caller);
>                         pr_err("\n");
>
> -                       page = vmalloc_to_page(page);
> +                       page = vmalloc_to_page(addr);
>                 }
>         }
>
> --
> 2.35.3
>

Nice catch, thanks!

Reviewed-by: Andrey Konovalov <andreyknvl@...il.com>