linux-kernel - arch/um/drivers/harddog_user.c:6:10: fatal error: stdio.h: No such file or directory

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Date:   Wed, 10 May 2023 06:14:44 +0800
From:   kernel test robot <lkp@...el.com>
To:     Johannes Berg <johannes.berg@...el.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Richard Weinberger <richard@....at>
Subject: arch/um/drivers/harddog_user.c:6:10: fatal error: stdio.h: No such
 file or directory

Hi Johannes,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   16a8829130ca22666ac6236178a6233208d425c3
commit: fc54a4f15988e228cf88f888483e985c5f35031e um: prevent user code in modules
date:   3 weeks ago
config: um-allmodconfig (https://download.01.org/0day-ci/archive/20230510/202305100640.HGwVAUIt-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fc54a4f15988e228cf88f888483e985c5f35031e
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout fc54a4f15988e228cf88f888483e985c5f35031e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um olddefconfig
        make W=1 O=build_dir ARCH=um SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305100640.HGwVAUIt-lkp@intel.com/

All errors (new ones prefixed by >>):

>> arch/um/drivers/harddog_user.c:6:10: fatal error: stdio.h: No such file or directory
       6 | #include <stdio.h>
         |          ^~~~~~~~~
   compilation terminated.


vim +6 arch/um/drivers/harddog_user.c

^1da177e4c3f41 Linus Torvalds 2005-04-16  @6  #include <stdio.h>
^1da177e4c3f41 Linus Torvalds 2005-04-16   7  #include <unistd.h>
^1da177e4c3f41 Linus Torvalds 2005-04-16   8  #include <errno.h>
37185b33240870 Al Viro        2012-10-08   9  #include <os.h>
^1da177e4c3f41 Linus Torvalds 2005-04-16  10  

:::::: The code at line 6 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests