linux-kernel - [tip:x86/cache 9/13] arch/x86/kernel/cpu/resctrl/rdtgroup.c:1456:6: warning: variable 'h' set but not used

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <202301242015.kbzkVteJ-lkp@intel.com>
Date:   Tue, 24 Jan 2023 20:37:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     Babu Moger <babu.moger@....com>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        "Borislav Petkov (AMD)" <bp@...en8.de>,
        Reinette Chatre <reinette.chatre@...el.com>
Subject: [tip:x86/cache 9/13] arch/x86/kernel/cpu/resctrl/rdtgroup.c:1456:6:
 warning: variable 'h' set but not used

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/cache
head:   0a363fb23ee2f7beb08437ad7db86d195878d79f
commit: dc2a3e857981f859889933cf66ded117d74edff1 [9/13] x86/resctrl: Add interface to read mbm_total_bytes_config
config: x86_64-randconfig-a013-20230123 (https://download.01.org/0day-ci/archive/20230124/202301242015.kbzkVteJ-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=dc2a3e857981f859889933cf66ded117d74edff1
        git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
        git fetch --no-tags tip x86/cache
        git checkout dc2a3e857981f859889933cf66ded117d74edff1
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/cpu/resctrl/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/cpu/resctrl/rdtgroup.c:1456:6: warning: variable 'h' set but not used [-Wunused-but-set-variable]
           u32 h;
               ^
   1 warning generated.


vim +/h +1456 arch/x86/kernel/cpu/resctrl/rdtgroup.c

  1451	
  1452	static void mon_event_config_read(void *info)
  1453	{
  1454		struct mon_config_info *mon_info = info;
  1455		unsigned int index;
> 1456		u32 h;
  1457	
  1458		index = mon_event_config_index_get(mon_info->evtid);
  1459		if (index == INVALID_CONFIG_INDEX) {
  1460			pr_warn_once("Invalid event id %d\n", mon_info->evtid);
  1461			return;
  1462		}
  1463		rdmsr(MSR_IA32_EVT_CFG_BASE + index, mon_info->mon_config, h);
  1464	
  1465		/* Report only the valid event configuration bits */
  1466		mon_info->mon_config &= MAX_EVT_CONFIG_BITS;
  1467	}
  1468	

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