linux-kernel - Re: [PATCH 1/6] kprobes: tracing/kprobes: Fix to kill kprobes on initmem after boot

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Date:   Tue, 1 Sep 2020 15:27:01 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     kernel test robot <lkp@...el.com>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Jonathan Corbet <corbet@....net>, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH 1/6] kprobes: tracing/kprobes: Fix to kill kprobes on
 initmem after boot

On Tue, 1 Sep 2020 00:25:58 +0800
kernel test robot <lkp@...el.com> wrote:

> Hi Masami,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on tip/perf/core]
> [also build test ERROR on trace/for-next lwn/docs-next linus/master v5.9-rc3 next-20200828]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch]
> 
> url:    https://github.com/0day-ci/linux/commits/Masami-Hiramatsu/tracing-boot-Add-new-options-for-tracing-specific-period/20200831-204738
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 2cb5383b30d47c446ec7d884cd80f93ffcc31817
> config: arc-defconfig (attached as .config)
> compiler: arc-elf-gcc (GCC) 9.3.0
> 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
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 
> 
> 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 >>):
> 
>    arc-elf-ld: init/main.o: in function `kernel_init':
> >> main.c:(.ref.text+0xa6): undefined reference to `kprobe_free_init_mem'
> >> arc-elf-ld: main.c:(.ref.text+0xa6): undefined reference to `kprobe_free_init_mem'

OK, I missed to put the kprobe_free_init_mem() in the code
depends on CONFIG_DEBUG_FS. I'll move this out.

Thank you,


-- 
Masami Hiramatsu <mhiramat@...nel.org>