linux-kernel - arch/powerpc/kernel/module.c:111:2: error: call to __compiletime_assert_232 declared with 'error' attribute: BUILD_BUG_ON failed: TASK_SIZE > MODULES

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Date:   Tue, 27 Sep 2022 10:33:36 +0800
From:   kernel test robot <lkp@...el.com>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Miguel Ojeda <ojeda@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Kees Cook <keescook@...omium.org>
Subject: arch/powerpc/kernel/module.c:111:2: error: call to
 __compiletime_assert_232 declared with 'error' attribute: BUILD_BUG_ON
 failed: TASK_SIZE > MODULES_VADDR

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f76349cf41451c5c42a99f18a9163377e4b364ff
commit: b83a908498d68fafca931e1276e145b339cac5fb compiler_attributes.h: move __compiletime_{error|warning}
date:   1 year, 1 month ago
config: powerpc-randconfig-r022-20220926
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
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
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b83a908498d68fafca931e1276e145b339cac5fb
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout b83a908498d68fafca931e1276e145b339cac5fb
        # 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=powerpc SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   In file included from arch/powerpc/kernel/module.c:7:
   In file included from include/linux/elf.h:6:
   In file included from arch/powerpc/include/asm/elf.h:8:
   In file included from include/linux/sched.h:14:
   In file included from include/linux/pid.h:5:
   In file included from include/linux/rculist.h:10:
   In file included from include/linux/list.h:9:
   In file included from include/linux/kernel.h:12:
   In file included from include/linux/bitops.h:32:
   In file included from arch/powerpc/include/asm/bitops.h:62:
   arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined]
   #define __lwsync()      __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory")
           ^
   <built-in>:323:9: note: previous definition is here
   #define __lwsync __builtin_ppc_lwsync
           ^
>> arch/powerpc/kernel/module.c:111:2: error: call to __compiletime_assert_232 declared with 'error' attribute: BUILD_BUG_ON failed: TASK_SIZE > MODULES_VADDR
           BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR);
           ^
   include/linux/build_bug.h:50:2: note: expanded from macro 'BUILD_BUG_ON'
           BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
           ^
   include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
   #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                       ^
   include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert'
           _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
           ^
   include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert'
           __compiletime_assert(condition, msg, prefix, suffix)
           ^
   include/linux/compiler_types.h:303:4: note: expanded from macro '__compiletime_assert'
                           prefix ## suffix();                             \
                           ^
   <scratch space>:119:1: note: expanded from here
   __compiletime_assert_232
   ^
   1 warning and 1 error generated.


vim +/error +111 arch/powerpc/kernel/module.c

2ec13df167040c Christophe Leroy 2021-04-01  104  
7fbc22ce299316 Christophe Leroy 2020-06-29  105  void *module_alloc(unsigned long size)
7fbc22ce299316 Christophe Leroy 2020-06-29  106  {
8abddd968a303d Nicholas Piggin  2021-05-03  107  #ifdef MODULES_VADDR
2ec13df167040c Christophe Leroy 2021-04-01  108  	unsigned long limit = (unsigned long)_etext - SZ_32M;
2ec13df167040c Christophe Leroy 2021-04-01  109  	void *ptr = NULL;
2ec13df167040c Christophe Leroy 2021-04-01  110  
7fbc22ce299316 Christophe Leroy 2020-06-29 @111  	BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR);

:::::: The code at line 111 was first introduced by commit
:::::: 7fbc22ce29931630da200cfc90fe5a454f54a794 powerpc: Use MODULES_VADDR if defined

:::::: TO: Christophe Leroy <christophe.leroy@...roup.eu>
:::::: CC: Michael Ellerman <mpe@...erman.id.au>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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