linux-kernel - Re: [PATCH v13 3/7] kasan: Add report for async mode

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Date:   Fri, 12 Feb 2021 15:47:29 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Vincenzo Frascino <vincenzo.frascino@....com>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        kasan-dev <kasan-dev@...glegroups.com>, kbuild-all@...ts.01.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v13 3/7] kasan: Add report for async mode

On Fri, Feb 12, 2021 at 12:21 PM Vincenzo Frascino
<vincenzo.frascino@....com> wrote:
>
> Hi Andrey,
>
> On 2/11/21 8:13 PM, Andrey Konovalov wrote:
> >>>> riscv64-linux-ld: report.c:(.text+0x5c4): undefined reference to `kasan_flag_async'
> > Let's do something like this (untested):
> >
> > https://github.com/xairy/linux/commit/91354d34b30ceedbc1b6417f1ff253de90618a97
>
> Could you reproduce this? I tried yesterday before posting the patches and my
> conclusion was that kbuild robot is testing on the wrong tree.
>
> I give it another go today, if you have more details based on your testing feel
> free to share.

I haven't tried reproducing, but the error makes sense. There's no
definition of kasan_flag_async for KASAN modes other than HW_TAGS.