Date:   Thu, 25 Nov 2021 18:53:13 +1100
From:   Stephen Rothwell <sfr@canb.auug.org.au>
To:     Naresh Kamboju <naresh.kamboju@linaro.org>
Cc:     Linux-Next Mailing List <linux-next@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        linux-mm <linux-mm@kvack.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Kefeng Wang <wangkefeng.wang@huawei.com>,
        Yongqiang Liu <liuyongqiang13@huawei.com>,
        Andrey Ryabinin <ryabinin.a.a@gmail.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Heiko Carstens <hca@linux.ibm.com>,
        Vasily Gorbik <gor@linux.ibm.com>,
        Christian Borntraeger <borntraeger@linux.ibm.com>,
        Alexander Gordeev <agordeev@linux.ibm.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Alexander Potapenko <glider@google.com>
Subject: Re: [next] kasan: shadow.c:528:33: error: 'VM_DELAY_KMEMLEAK'
 undeclared
Message-ID: <20211125185313.77e20bc5@canb.auug.org.au>
In-Reply-To: <CA+G9fYuLv7491Q2AHcaUAQ2AQeFBQgx8w0DzK95Qf6Fh9gGFfQ@mail.gmail.com>
References: <CA+G9fYuLv7491Q2AHcaUAQ2AQeFBQgx8w0DzK95Qf6Fh9gGFfQ@mail.gmail.com>
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Hi Naresh,

On Thu, 25 Nov 2021 12:43:41 +0530 Naresh Kamboju <naresh.kamboju@linaro.or=
g> wrote:
>
> [ Please ignore this email if it is already reported ]
>=20
> While building Linux next 20211125 x86 with CONFIG_KASAN=3Dy gcc-11
> following warnings / errors noticed.
>=20
> mm/kasan/shadow.c: In function 'kasan_module_alloc':
> mm/kasan/shadow.c:528:33: error: 'VM_DELAY_KMEMLEAK' undeclared (first
> use in this function); did you mean 'VM_DEFER_KMEMLEAK'?
>   528 |                 if (vm->flags & VM_DELAY_KMEMLEAK)
>       |                                 ^~~~~~~~~~~~~~~~~
>       |                                 VM_DEFER_KMEMLEAK
> mm/kasan/shadow.c:528:33: note: each undeclared identifier is reported
> only once for each function it appears in
> make[3]: *** [scripts/Makefile.build:288: mm/kasan/shadow.o] Error 1
>=20
> Build config:
> https://builds.tuxbuild.com/21OjEyx87iCX9bqOwJrZdl1wFFj/config
>=20
>=20
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
>=20
> meta data:
> -----------
>     git describe: next-20211125
>     git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
>     git_sha: f81e94e91878bded599cc60f2881cfd50991aeb9
>     git_short_log: f81e94e91878 (\"Add linux-next specific files for 2021=
1125\")
>     target_arch: x86
>     toolchain: gcc-11
>=20
> steps to reproduce:
> tuxmake --runtime podman --target-arch x86_64 --toolchain gcc-11
> --kconfig defconfig \
> --kconfig-add https://builds.tuxbuild.com/21OjEyx87iCX9bqOwJrZdl1wFFj/con=
fig
>=20
> https://builds.tuxbuild.com/21OjEyx87iCX9bqOwJrZdl1wFFj/tuxmake_reproduce=
r.sh
>=20
> --
> Linaro LKFT
> https://lkft.linaro.org

Caused by commit

  f61bc9ffcab1 ("mm: defer kmemleak object creation of module_alloc()")

from the akpm-current tree.  The define is VM_DEFER_KMEMLEAK :-(

--=20
Cheers,
Stephen Rothwell

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