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Date:   Thu, 22 Jul 2021 20:54:36 +0800
From:   "Chen, Rong A" <rong.a.chen@...el.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>,
        Gabriel Krisman Bertazi <krisman@...labora.com>
Cc:     kernel test robot <lkp@...el.com>, amir73il@...il.com,
        kbuild-all@...ts.01.org, djwong@...nel.org, tytso@....edu,
        david@...morbit.com, jack@...e.com, dhowells@...hat.com,
        khazhy@...gle.com, linux-fsdevel@...r.kernel.org,
        linux-ext4@...r.kernel.org
Subject: Re: [PATCH v3 14/15] samples: Add fs error monitoring example

Hi Gabriel,

On 7/21/2021 3:49 AM, Dan Carpenter wrote:
> 
> On Mon, Jul 19, 2021 at 10:36:54AM -0400, Gabriel Krisman Bertazi wrote:
>> kernel test robot <lkp@...el.com> writes:
>>
>>> Hi Gabriel,
>>>
>>> I love your patch! Yet something to improve:
>>>
>>> [auto build test ERROR on ext3/fsnotify]
>>> [also build test ERROR on ext4/dev linus/master v5.13 next-20210629]
>>> [cannot apply to tytso-fscrypt/master]
>>> [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/Gabriel-Krisman-Bertazi/File-system-wide-monitoring/20210630-031347
>>> base:   https://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git  fsnotify
>>> config: arm64-allyesconfig (attached as .config)
>>> compiler: aarch64-linux-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
>>>          # https://github.com/0day-ci/linux/commit/746524d8db08a041fed90e41b15c8e8ca69cb22d
>>>          git remote add linux-review https://github.com/0day-ci/linux
>>>          git fetch --no-tags linux-review Gabriel-Krisman-Bertazi/File-system-wide-monitoring/20210630-031347
>>>          git checkout 746524d8db08a041fed90e41b15c8e8ca69cb22d
>>>          # save the attached .config to linux build tree
>>>          mkdir build_dir
>>>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash samples/
>>>
>>> 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 >>):
>>>
>>>>> samples/fanotify/fs-monitor.c:7:10: fatal error: errno.h: No such file or directory
>>>         7 | #include <errno.h>
>>>           |          ^~~~~~~~~
>>>     compilation terminated.
>>
>> Hi Dan,
>>
>> I'm not sure what's the proper fix here.  Looks like 0day is not using
>> cross system libraries when building this user space code.  Should I do
>> something special to silent it?

It seems need extra libraries for arm64, we'll disable CONFIG_SAMPLES to 
avoid reporting this error.

Best Regards,
Rong Chen


> 
> I'm not the person to ask, I just look at Smatch warnings.  Rong Chen
> might know the answer.
> 
> regards,
> dan carpenter
> 

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