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Subjectarch/powerpc/include/asm/book3s/32/tlbflush.h:83:2: error: call to '__compiletime_assert_175' declared with 'error' attribute: BUILD_BUG failed
Hi Christopher,

FYI, the error/warning still remains.

tree: master
head: f883675bf6522b52cd75dc3de791680375961769
commit: c28c15b6d28a776538482101522cbcd9f906b15c powerpc/code-patching: Use temporary mm for Radix MMU
date: 7 weeks ago
config: powerpc-buildonly-randconfig-r001-20230121 (
compiler: clang version 16.0.0 ( 4196ca3278f78c6e19246e54ab0ecb364e37d66a)
reproduce (this is a W=1 build):
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
git remote add linus
git fetch --no-tags linus master
git checkout c28c15b6d28a776538482101522cbcd9f906b15c
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/lib/

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

All errors (new ones prefixed by >>):

In file included from arch/powerpc/lib/code-patching.c:6:
In file included from include/linux/kprobes.h:28:
In file included from include/linux/ftrace.h:10:
In file included from include/linux/trace_recursion.h:5:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:29:
In file included from include/linux/mm.h:29:
In file included from include/linux/pgtable.h:6:
In file included from arch/powerpc/include/asm/pgtable.h:11:
In file included from arch/powerpc/include/asm/tlbflush.h:6:
In file included from arch/powerpc/include/asm/book3s/tlbflush.h:8:
>> arch/powerpc/include/asm/book3s/32/tlbflush.h:83:2: error: call to '__compiletime_assert_175' declared with 'error' attribute: BUILD_BUG failed
include/linux/build_bug.h:59:21: note: expanded from macro 'BUILD_BUG'
#define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
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:357:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
include/linux/compiler_types.h:345:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
include/linux/compiler_types.h:338:4: note: expanded from macro '__compiletime_assert'
prefix ## suffix(); \
<scratch space>:194:1: note: expanded from here
1 error generated.

vim +83 arch/powerpc/include/asm/book3s/32/tlbflush.h

274d842fa1efd9 Benjamin Gray 2022-11-09 79
274d842fa1efd9 Benjamin Gray 2022-11-09 80 static inline void local_flush_tlb_page_psize(struct mm_struct *mm,
274d842fa1efd9 Benjamin Gray 2022-11-09 81 unsigned long vmaddr, int psize)
274d842fa1efd9 Benjamin Gray 2022-11-09 82 {
274d842fa1efd9 Benjamin Gray 2022-11-09 @83 BUILD_BUG();
274d842fa1efd9 Benjamin Gray 2022-11-09 84 }
274d842fa1efd9 Benjamin Gray 2022-11-09 85

:::::: The code at line 83 was first introduced by commit
:::::: 274d842fa1efd9449e62222c8896e0be11621f1f powerpc/tlb: Add local flush for page given mm_struct and psize

:::::: TO: Benjamin Gray <>
:::::: CC: Michael Ellerman <>

0-DAY CI Kernel Test Service

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