arch/xtensa/lib/kcsan-stubs.c:6:6: sparse: sparse: symbol '__atomic_store_8' was not declared. Should it be static?

From: kernel test robot
Date: Fri Aug 12 2022 - 20:58:10 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 4a9350597aff50bbd0f4b80ccf49d2e02d1111f5
commit: 725aea873261e8d986e527838fde2a721f0962d8 xtensa: enable KCSAN
date: 3 months ago
config: xtensa-randconfig-s031-20220811 (https://download.01.org/0day-ci/archive/20220813/202208130854.GerXgHrP-lkp@xxxxxxxxx/config)
compiler: xtensa-linux-gcc (GCC) 12.1.0
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: v0.6.4-39-gce1a6720-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=725aea873261e8d986e527838fde2a721f0962d8
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 725aea873261e8d986e527838fde2a721f0962d8
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=xtensa SHELL=/bin/bash

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

sparse warnings: (new ones prefixed by >>)
>> arch/xtensa/lib/kcsan-stubs.c:6:6: sparse: sparse: symbol '__atomic_store_8' was not declared. Should it be static?
>> arch/xtensa/lib/kcsan-stubs.c:11:5: sparse: sparse: symbol '__atomic_load_8' was not declared. Should it be static?
>> arch/xtensa/lib/kcsan-stubs.c:16:5: sparse: sparse: symbol '__atomic_exchange_8' was not declared. Should it be static?
>> arch/xtensa/lib/kcsan-stubs.c:21:6: sparse: sparse: symbol '__atomic_compare_exchange_8' was not declared. Should it be static?
>> arch/xtensa/lib/kcsan-stubs.c:26:5: sparse: sparse: symbol '__atomic_fetch_add_8' was not declared. Should it be static?
>> arch/xtensa/lib/kcsan-stubs.c:31:5: sparse: sparse: symbol '__atomic_fetch_sub_8' was not declared. Should it be static?
>> arch/xtensa/lib/kcsan-stubs.c:36:5: sparse: sparse: symbol '__atomic_fetch_and_8' was not declared. Should it be static?
>> arch/xtensa/lib/kcsan-stubs.c:41:5: sparse: sparse: symbol '__atomic_fetch_or_8' was not declared. Should it be static?
>> arch/xtensa/lib/kcsan-stubs.c:46:5: sparse: sparse: symbol '__atomic_fetch_xor_8' was not declared. Should it be static?
>> arch/xtensa/lib/kcsan-stubs.c:51:5: sparse: sparse: symbol '__atomic_fetch_nand_8' was not declared. Should it be static?

vim +/__atomic_store_8 +6 arch/xtensa/lib/kcsan-stubs.c

5
> 6 void __atomic_store_8(volatile void *p, u64 v, int i)
7 {
8 BUG();
9 }
10
> 11 u64 __atomic_load_8(const volatile void *p, int i)
12 {
13 BUG();
14 }
15
> 16 u64 __atomic_exchange_8(volatile void *p, u64 v, int i)
17 {
18 BUG();
19 }
20
> 21 bool __atomic_compare_exchange_8(volatile void *p1, void *p2, u64 v, bool b, int i1, int i2)
22 {
23 BUG();
24 }
25
> 26 u64 __atomic_fetch_add_8(volatile void *p, u64 v, int i)
27 {
28 BUG();
29 }
30
> 31 u64 __atomic_fetch_sub_8(volatile void *p, u64 v, int i)
32 {
33 BUG();
34 }
35
> 36 u64 __atomic_fetch_and_8(volatile void *p, u64 v, int i)
37 {
38 BUG();
39 }
40
> 41 u64 __atomic_fetch_or_8(volatile void *p, u64 v, int i)
42 {
43 BUG();
44 }
45
> 46 u64 __atomic_fetch_xor_8(volatile void *p, u64 v, int i)
47 {
48 BUG();
49 }
50
> 51 u64 __atomic_fetch_nand_8(volatile void *p, u64 v, int i)

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