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From:   Naresh Kamboju <naresh.kamboju@linaro.org>
Date:   Mon, 11 Oct 2021 18:12:44 +0530
Message-ID: <CA+G9fYtD2EFu7-j1wPLCiu2yVpZb_wObXXXebKNSW5o4gh9vgA@mail.gmail.com>
Subject: Re: mm/kasan/init.c:282:20: error: redefinition of 'kasan_populate_early_vm_area_shadow'
To:     Linux-Next Mailing List <linux-next@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        linux-mm <linux-mm@kvack.org>,
        kasan-dev <kasan-dev@googlegroups.com>
Cc:     Andrey Ryabinin <ryabinin.a.a@gmail.com>,
        Alexander Potapenko <glider@google.com>,
        Andrey Konovalov <andreyknvl@gmail.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Andrew Morton <akpm@linux-foundation.org>
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+ Andrew Morton <akpm@linux-foundation.org>

On Mon, 11 Oct 2021 at 17:08, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>
> Regression found on x86_64 gcc-11 built with KASAN enabled.
> Following build warnings / errors reported on linux next 20211011.
>
> metadata:
>     git_describe: next-20211011
>     git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
>     git_short_log: d3134eb5de85 (\"Add linux-next specific files for 20211011\")
>     target_arch: x86_64
>     toolchain: gcc-11
>
> build error :
> --------------
> mm/kasan/init.c:282:20: error: redefinition of
> 'kasan_populate_early_vm_area_shadow'
>   282 | void __init __weak kasan_populate_early_vm_area_shadow(void *start,
>       |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> In file included from include/linux/mm.h:34,
>                  from include/linux/memblock.h:13,
>                  from mm/kasan/init.c:9:
> include/linux/kasan.h:463:20: note: previous definition of
> 'kasan_populate_early_vm_area_shadow' with type 'void(void *, long
> unsigned int)'
>   463 | static inline void kasan_populate_early_vm_area_shadow(void *start,
>       |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> make[3]: *** [scripts/Makefile.build:288: mm/kasan/init.o] Error 1
> make[3]: Target '__build' not remade because of errors.
>
>
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
>
> build link:
> -----------
> https://builds.tuxbuild.com/1zLv2snHfZN8QV01yA9MB8NhUZt/build.log
>
> build config:
> -------------
> https://builds.tuxbuild.com/1zLv2snHfZN8QV01yA9MB8NhUZt/config
>
> # To install tuxmake on your system globally
> # sudo pip3 install -U tuxmake
> tuxmake --runtime podman --target-arch x86_64 --toolchain gcc-11
> --kconfig defconfig --kconfig-add
> https://builds.tuxbuild.com/1zLv2snHfZN8QV01yA9MB8NhUZt/config
>
> --
> Linaro LKFT
> https://lkft.linaro.org