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From:   Andrey Konovalov <andreyknvl@google.com>
Date:   Fri, 12 Feb 2021 15:47:29 +0100
Message-ID: <CAAeHK+y2kxnxD54b9gQOZ77daJGwffpk9mZs3PBf1PCTGAEO5w@mail.gmail.com>
Subject: Re: [PATCH v13 3/7] kasan: Add report for async mode
To:     Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc:     Linux ARM <linux-arm-kernel@lists.infradead.org>,
        LKML <linux-kernel@vger.kernel.org>,
        kasan-dev <kasan-dev@googlegroups.com>, kbuild-all@lists.01.org,
        Andrew Morton <akpm@linux-foundation.org>,
        Linux Memory Management List <linux-mm@kvack.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Dmitry Vyukov <dvyukov@google.com>,
        Andrey Ryabinin <aryabinin@virtuozzo.com>,
        kernel test robot <lkp@intel.com>
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On Fri, Feb 12, 2021 at 12:21 PM Vincenzo Frascino
<vincenzo.frascino@arm.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.