linux-kernel - Re: [next] kasan: shadow.c:528:33: error: 'VM_DELAY

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Date:   Thu, 25 Nov 2021 18:53:13 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Yongqiang Liu <liuyongqiang13@...wei.com>,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Alexander Potapenko <glider@...gle.com>
Subject: Re: [next] kasan: shadow.c:528:33: error: 'VM_DELAY_KMEMLEAK'
 undeclared

Hi Naresh,

On Thu, 25 Nov 2021 12:43:41 +0530 Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
>
> [ Please ignore this email if it is already reported ]
> 
> While building Linux next 20211125 x86 with CONFIG_KASAN=y gcc-11
> following warnings / errors noticed.
> 
> 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
> 
> Build config:
> https://builds.tuxbuild.com/21OjEyx87iCX9bqOwJrZdl1wFFj/config
> 
> 
> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> 
> 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 20211125\")
>     target_arch: x86
>     toolchain: gcc-11
> 
> steps to reproduce:
> tuxmake --runtime podman --target-arch x86_64 --toolchain gcc-11
> --kconfig defconfig \
> --kconfig-add https://builds.tuxbuild.com/21OjEyx87iCX9bqOwJrZdl1wFFj/config
> 
> https://builds.tuxbuild.com/21OjEyx87iCX9bqOwJrZdl1wFFj/tuxmake_reproducer.sh
> 
> --
> 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 :-(

-- 
Cheers,
Stephen Rothwell

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