tree: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev head: b76a7dd9a7437e8c21253ce3a7574bebde3827f9 commit: 0df27ddf69f38e5ab1e1c73e46c35eecc6ca1609 [17/25] ext4: only allow test_dummy_encryption when supported config: i386-randconfig-a004 (https://download.01.org/0day-ci/archive/20220520/202205200431.kzojEoNc-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project e00cbbec06c08dc616a0d52a20f678b8fbd4e304) 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/tytso/ext4.git/commit/?id=0df27ddf69f38e5ab1e1c73e46c35eecc6ca1609 git remote add tytso-ext4 https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git git fetch --no-tags tytso-ext4 dev git checkout 0df27ddf69f38e5ab1e1c73e46c35eecc6ca1609 # 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=i386 SHELL=/bin/bash fs/ext4/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> fs/ext4/super.c:2799:29: warning: unused variable 'sbi' [-Wunused-variable] const struct ext4_sb_info *sbi = EXT4_SB(sb); ^ 1 warning generated. vim +/sbi +2799 fs/ext4/super.c 2794 2795 static int ext4_check_test_dummy_encryption(const struct fs_context *fc, 2796 struct super_block *sb) 2797 { 2798 const struct ext4_fs_context *ctx = fc->fs_private; > 2799 const struct ext4_sb_info *sbi = EXT4_SB(sb); 2800 2801 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION) || 2802 !(ctx->spec & EXT4_SPEC_DUMMY_ENCRYPTION)) 2803 return 0; 2804 2805 if (!ext4_has_feature_encrypt(sb)) { 2806 ext4_msg(NULL, KERN_WARNING, 2807 "test_dummy_encryption requires encrypt feature"); 2808 return -EINVAL; 2809 } 2810 /* 2811 * This mount option is just for testing, and it's not worthwhile to 2812 * implement the extra complexity (e.g. RCU protection) that would be 2813 * needed to allow it to be set or changed during remount. We do allow 2814 * it to be specified during remount, but only if there is no change. 2815 */ 2816 if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE && 2817 !DUMMY_ENCRYPTION_ENABLED(sbi)) { 2818 ext4_msg(NULL, KERN_WARNING, 2819 "Can't set test_dummy_encryption on remount"); 2820 return -EINVAL; 2821 } 2822 return 0; 2823 } 2824 -- 0-DAY CI Kernel Test Service https://01.org/lkp
