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Message-ID: <202010260811.PFBKx7Dd-lkp@intel.com>
Date: Mon, 26 Oct 2020 08:27:13 +0800
From: kernel test robot <lkp@...el.com>
To: Christoph Hellwig <hch@....de>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Palmer Dabbelt <palmerdabbelt@...gle.com>
Subject: 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)
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 <lkp@...el.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 <will@...nel.org>
:::::: CC: Will Deacon <will@...nel.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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