netdev - Re: [PATCH net-next 02/19] lib: add tests for reference tracker

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Date:   Thu, 2 Dec 2021 11:46:13 -0800
From:   Eric Dumazet <edumazet@...gle.com>
To:     kernel test robot <lkp@...el.com>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, kbuild-all@...ts.01.org,
        netdev <netdev@...r.kernel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>
Subject: Re: [PATCH net-next 02/19] lib: add tests for reference tracker

On Thu, Dec 2, 2021 at 11:25 AM kernel test robot <lkp@...el.com> wrote:
>
> Hi Eric,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on net-next/master]
>
> url:    https://github.com/0day-ci/linux/commits/Eric-Dumazet/net-add-preliminary-netdev-refcount-tracking/20211202-112353
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 8057cbb8335cf6d419866737504473833e1d128a
> config: nios2-allyesconfig (https://download.01.org/0day-ci/archive/20211203/202112030323.z9IhC2B3-lkp@intel.com/config)
> compiler: nios2-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/5da0cdb1848fae9fb2d9d749bb94e568e2493df8
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Eric-Dumazet/net-add-preliminary-netdev-refcount-tracking/20211202-112353
>         git checkout 5da0cdb1848fae9fb2d9d749bb94e568e2493df8
>         # save the config file to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nios2 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 >>):
>
>    nios2-linux-ld: kernel/stacktrace.o: in function `stack_trace_save':
> >> (.text+0x2e4): undefined reference to `save_stack_trace'
>    (.text+0x2e4): relocation truncated to fit: R_NIOS2_CALL26 against `save_stack_trace'
>
> Kconfig warnings: (for reference only)
>    WARNING: unmet direct dependencies detected for STACKTRACE
>    Depends on STACKTRACE_SUPPORT
>    Selected by
>    - STACKDEPOT
>

I am not sure I understand this.

Dmitry, do I need to add a depends on STACKTRACE_SUPPORT.

Thanks !