Hi Sergey, kernel test robot noticed the following build errors: [auto build test ERROR on axboe-block/for-next] [also build test ERROR on akpm-mm/mm-everything linus/master v6.9-rc6 next-20240503] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Sergey-Senozhatsky/zram-move-from-crypto-API-to-custom-comp-backends-API/20240503-172335 base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next patch link: https://lore.kernel.org/r/20240503091823.3616962-9-senozhatsky%40chromium.org patch subject: [PATCH 08/14] zram: check that backends array has at least one backend config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20240504/202405041458.j3L25KZg-lkp@xxxxxxxxx/config) compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240504/202405041458.j3L25KZg-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202405041458.j3L25KZg-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from <command-line>: drivers/block/zram/zcomp.c: In function 'zcomp_create': >> include/linux/compiler_types.h:449:45: error: call to '__compiletime_assert_419' declared with attribute error: BUILD_BUG_ON failed: ARRAY_SIZE(backends) <= 1 449 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:430:25: note: in definition of macro '__compiletime_assert' 430 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:449:9: note: in expansion of macro '_compiletime_assert' 449 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG' 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) | ^~~~~~~~~~~~~~~~ drivers/block/zram/zcomp.c:214:9: note: in expansion of macro 'BUILD_BUG_ON' 214 | BUILD_BUG_ON(ARRAY_SIZE(backends) <= 1); | ^~~~~~~~~~~~ vim +/__compiletime_assert_419 +449 include/linux/compiler_types.h eb5c2d4b45e3d2 Will Deacon 2020-07-21 435 eb5c2d4b45e3d2 Will Deacon 2020-07-21 436 #define _compiletime_assert(condition, msg, prefix, suffix) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 437 __compiletime_assert(condition, msg, prefix, suffix) eb5c2d4b45e3d2 Will Deacon 2020-07-21 438 eb5c2d4b45e3d2 Will Deacon 2020-07-21 439 /** eb5c2d4b45e3d2 Will Deacon 2020-07-21 440 * compiletime_assert - break build and emit msg if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 441 * @condition: a compile-time constant condition to check eb5c2d4b45e3d2 Will Deacon 2020-07-21 442 * @msg: a message to emit if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 443 * eb5c2d4b45e3d2 Will Deacon 2020-07-21 444 * In tradition of POSIX assert, this macro will break the build if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 445 * supplied condition is *false*, emitting the supplied error message if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 446 * compiler has support to do so. eb5c2d4b45e3d2 Will Deacon 2020-07-21 447 */ eb5c2d4b45e3d2 Will Deacon 2020-07-21 448 #define compiletime_assert(condition, msg) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 @449 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) eb5c2d4b45e3d2 Will Deacon 2020-07-21 450 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
