netdev - Re: [PATCH v2 bpf-next 1/2] bpf: introduce helper bpf_find

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Message-ID: <60072279-1775-4359-8E65-C2956D4BE8BE@fb.com>
Date:   Thu, 4 Nov 2021 21:11:13 +0000
From:   Song Liu <songliubraving@...com>
To:     kernel test robot <lkp@...el.com>
CC:     bpf <bpf@...r.kernel.org>, Networking <netdev@...r.kernel.org>,
        "kbuild-all@...ts.01.org" <kbuild-all@...ts.01.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Kernel Team <Kernel-team@...com>,
        "kpsingh@...nel.org" <kpsingh@...nel.org>
Subject: Re: [PATCH v2 bpf-next 1/2] bpf: introduce helper bpf_find_vma



> On Nov 4, 2021, at 1:37 PM, kernel test robot <lkp@...el.com> wrote:
> 
> Hi Song,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on bpf-next/master]
> 
> url:    https://github.com/0day-ci/linux/commits/Song-Liu/introduce-bpf_find_vma/20211104-150210
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
> config: riscv-randconfig-r034-20211104 (attached as .config)
> compiler: riscv64-linux-gcc (GCC) 11.2.0
> reproduce (this is a W=1 build):
>        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross  -O ~/bin/make.cross
>        chmod +x ~/bin/make.cross
>        # https://github.com/0day-ci/linux/commit/e219efba8d04dede08b1d87fa1e8c5c01180caaf
>        git remote add linux-review https://github.com/0day-ci/linux
>        git fetch --no-tags linux-review Song-Liu/introduce-bpf_find_vma/20211104-150210
>        git checkout e219efba8d04dede08b1d87fa1e8c5c01180caaf
>        # save the attached .config to linux build tree
>        mkdir build_dir
>        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All errors (new ones prefixed by >>):
> 
>   riscv64-linux-ld: kernel/bpf/task_iter.o: in function `bpf_find_vma':
>   task_iter.c:(.text+0x3dc): undefined reference to `mmap_unlock_work'
>>> riscv64-linux-ld: task_iter.c:(.text+0x3e0): undefined reference to `mmap_unlock_work'
>   riscv64-linux-ld: task_iter.c:(.text+0x400): undefined reference to `mmap_unlock_work'

Sigh, I didn't see this before sending v3. Will fix in v4. 

> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org 
> <.config.gz>