Hi Christoph, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 3650b228f83adda7e5ee532e2b90429c03f7b9ec commit: 11129e8ed4d91a062c5062d80f476adc7fbedbac riscv: use memcpy based uaccess for nommu again date: 3 weeks ago config: riscv-randconfig-s031-20201026 (attached as .config) compiler: riscv64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-56-gc09e8239-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=11129e8ed4d91a062c5062d80f476adc7fbedbac git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 11129e8ed4d91a062c5062d80f476adc7fbedbac # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All errors (new ones prefixed by >>): In file included from <command-line>: include/asm-generic/uaccess.h: In function '__get_user_fn': >> include/linux/compiler_types.h:319:38: error: call to >> '__compiletime_assert_171' declared with attribute error: BUILD_BUG_ON >> failed: !__builtin_constant_p(size) 319 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:300:4: note: in definition of macro '__compiletime_assert' 300 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:319:2: note: in expansion of macro '_compiletime_assert' 319 | _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:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) | ^~~~~~~~~~~~~~~~ include/asm-generic/uaccess.h:17:2: note: in expansion of macro 'BUILD_BUG_ON' 17 | BUILD_BUG_ON(!__builtin_constant_p(size)); | ^~~~~~~~~~~~ include/linux/compiler_types.h:319:38: error: call to '__compiletime_assert_172' declared with attribute error: BUILD_BUG failed 319 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:300:4: note: in definition of macro '__compiletime_assert' 300 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:319:2: note: in expansion of macro '_compiletime_assert' 319 | _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:59:21: note: in expansion of macro 'BUILD_BUG_ON_MSG' 59 | #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed") | ^~~~~~~~~~~~~~~~ include/asm-generic/uaccess.h:33:3: note: in expansion of macro 'BUILD_BUG' 33 | BUILD_BUG(); | ^~~~~~~~~ vim +/__compiletime_assert_171 +319 include/linux/compiler_types.h eb5c2d4b45e3d2 Will Deacon 2020-07-21 305 eb5c2d4b45e3d2 Will Deacon 2020-07-21 306 #define _compiletime_assert(condition, msg, prefix, suffix) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 307 __compiletime_assert(condition, msg, prefix, suffix) eb5c2d4b45e3d2 Will Deacon 2020-07-21 308 eb5c2d4b45e3d2 Will Deacon 2020-07-21 309 /** eb5c2d4b45e3d2 Will Deacon 2020-07-21 310 * compiletime_assert - break build and emit msg if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 311 * @condition: a compile-time constant condition to check eb5c2d4b45e3d2 Will Deacon 2020-07-21 312 * @msg: a message to emit if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 313 * eb5c2d4b45e3d2 Will Deacon 2020-07-21 314 * In tradition of POSIX assert, this macro will break the build if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 315 * supplied condition is *false*, emitting the supplied error message if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 316 * compiler has support to do so. eb5c2d4b45e3d2 Will Deacon 2020-07-21 317 */ eb5c2d4b45e3d2 Will Deacon 2020-07-21 318 #define compiletime_assert(condition, msg) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 @319 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) eb5c2d4b45e3d2 Will Deacon 2020-07-21 320 :::::: The code at line 319 was first introduced by commit :::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h :::::: TO: Will Deacon <w...@kernel.org> :::::: CC: Will Deacon <w...@kernel.org> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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