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Message-ID: <202206100910.yGy51caX-lkp@intel.com>
Date: Fri, 10 Jun 2022 09:03:07 +0800
From: kernel test robot <lkp@...el.com>
To: Peter Collingbourne <pcc@...gle.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Will Deacon <will@...nel.org>,
Catalin Marinas <catalin.marinas@....com>
Subject: arch/arm64/kernel/mte.c:197:13: warning: no previous prototype for
'kasan_hw_tags_enable'
Hi Peter,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 874c8ca1e60b2c564a48f7e7acc40d328d5c8733
commit: e5af50a5df571c1d0268b02f924de49b742c990f arm64: kasan: mte: move GCR_EL1 switch to task switch when KASAN disabled
date: 8 months ago
config: arm64-alldefconfig (https://download.01.org/0day-ci/archive/20220610/202206100910.yGy51caX-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.3.0
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
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e5af50a5df571c1d0268b02f924de49b742c990f
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e5af50a5df571c1d0268b02f924de49b742c990f
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kernel/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
Note: functions only called from assembly code should be annotated with the asmlinkage attribute
All warnings (new ones prefixed by >>):
>> arch/arm64/kernel/mte.c:197:13: warning: no previous prototype for 'kasan_hw_tags_enable' [-Wmissing-prototypes]
197 | void __init kasan_hw_tags_enable(struct alt_instr *alt, __le32 *origptr,
| ^~~~~~~~~~~~~~~~~~~~
vim +/kasan_hw_tags_enable +197 arch/arm64/kernel/mte.c
196
> 197 void __init kasan_hw_tags_enable(struct alt_instr *alt, __le32 *origptr,
198 __le32 *updptr, int nr_inst)
199 {
200 BUG_ON(nr_inst != 1); /* Branch -> NOP */
201
202 if (kasan_hw_tags_enabled())
203 *updptr = cpu_to_le32(aarch64_insn_gen_nop());
204 }
205
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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