linux-kernel - Re: [PATCH 2/2] LoadPin: Make sysctl table const

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Message-ID: <202502142320.sf6WGiJs-lkp@intel.com>
Date: Fri, 14 Feb 2025 23:54:00 +0800
From: kernel test robot <lkp@...el.com>
To: "Ricardo B. Marliere" <ricardo@...liere.net>,
	Kees Cook <kees@...nel.org>, Paul Moore <paul@...l-moore.com>,
	James Morris <jmorris@...ei.org>,
	"Serge E. Hallyn" <serge@...lyn.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, "Ricardo B. Marliere" <rbm@...e.com>,
	Thomas Weißschuh <linux@...ssschuh.net>
Subject: Re: [PATCH 2/2] LoadPin: Make sysctl table const

Hi Ricardo,

kernel test robot noticed the following build errors:

[auto build test ERROR on a9a5e0bdc5a77a7c662ad4be0ad661f0b0d5e99d]

url:    https://github.com/intel-lab-lkp/linux/commits/Ricardo-B-Marliere/yama-Make-sysctl-table-const/20250124-033808
base:   a9a5e0bdc5a77a7c662ad4be0ad661f0b0d5e99d
patch link:    https://lore.kernel.org/r/20250123-sysctl-kees-v1-2-533359e74d66%40suse.com
patch subject: [PATCH 2/2] LoadPin: Make sysctl table const
config: nios2-allmodconfig (https://download.01.org/0day-ci/archive/20250214/202502142320.sf6WGiJs-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250214/202502142320.sf6WGiJs-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502142320.sf6WGiJs-lkp@intel.com/

All errors (new ones prefixed by >>):

   security/loadpin/loadpin.c: In function 'set_sysctl':
>> security/loadpin/loadpin.c:75:48: error: assignment of member 'extra1' in read-only object
      75 |                 loadpin_sysctl_table[0].extra1 = SYSCTL_ZERO;
         |                                                ^
   security/loadpin/loadpin.c:77:48: error: assignment of member 'extra1' in read-only object
      77 |                 loadpin_sysctl_table[0].extra1 = SYSCTL_ONE;
         |                                                ^


vim +/extra1 +75 security/loadpin/loadpin.c

9b091556a073a9 Kees Cook 2016-04-20  67  
60ba1028fc7b73 Kees Cook 2022-12-09  68  static void set_sysctl(bool is_writable)
9b091556a073a9 Kees Cook 2016-04-20  69  {
9b091556a073a9 Kees Cook 2016-04-20  70  	/*
9b091556a073a9 Kees Cook 2016-04-20  71  	 * If load pinning is not enforced via a read-only block
9b091556a073a9 Kees Cook 2016-04-20  72  	 * device, allow sysctl to change modes for testing.
9b091556a073a9 Kees Cook 2016-04-20  73  	 */
60ba1028fc7b73 Kees Cook 2022-12-09  74  	if (is_writable)
60ba1028fc7b73 Kees Cook 2022-12-09 @75  		loadpin_sysctl_table[0].extra1 = SYSCTL_ZERO;
60ba1028fc7b73 Kees Cook 2022-12-09  76  	else
60ba1028fc7b73 Kees Cook 2022-12-09  77  		loadpin_sysctl_table[0].extra1 = SYSCTL_ONE;
60ba1028fc7b73 Kees Cook 2022-12-09  78  }
60ba1028fc7b73 Kees Cook 2022-12-09  79  #else
60ba1028fc7b73 Kees Cook 2022-12-09  80  static inline void set_sysctl(bool is_writable) { }
60ba1028fc7b73 Kees Cook 2022-12-09  81  #endif
60ba1028fc7b73 Kees Cook 2022-12-09  82  

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