* [linux-next:master 5068/5074] mm/kasan/common.c:89:14: warning: no previous prototype for function '__kasan_never_merge'
@ 2020-11-11 12:46 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2020-11-11 12:46 UTC (permalink / raw)
To: Andrey Konovalov
Cc: kbuild-all, clang-built-linux, Linux Memory Management List,
Andrew Morton
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 3e14f70c05cda4794901ed8f976de3a88deebcc0
commit: 622c9ff2b804a1de896e757f8fe3a71fcef2941b [5068/5074] kasan, mm: allow cache merging with no metadata
config: x86_64-randconfig-a003-20201111 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 874b0a0b9db93f5d3350ffe6b5efda2d908415d0)
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 x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=622c9ff2b804a1de896e757f8fe3a71fcef2941b
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout 622c9ff2b804a1de896e757f8fe3a71fcef2941b
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> mm/kasan/common.c:89:14: warning: no previous prototype for function '__kasan_never_merge' [-Wmissing-prototypes]
slab_flags_t __kasan_never_merge(slab_flags_t flags)
^
mm/kasan/common.c:89:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
slab_flags_t __kasan_never_merge(slab_flags_t flags)
^
static
1 warning generated.
vim +/__kasan_never_merge +89 mm/kasan/common.c
84
85 /*
86 * Only allow cache merging when stack collection is disabled and no metadata
87 * is present.
88 */
> 89 slab_flags_t __kasan_never_merge(slab_flags_t flags)
90 {
91 if (kasan_stack_collection_enabled())
92 return flags;
93 return flags & ~SLAB_KASAN;
94 }
95
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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