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Date: Sat, 7 Jan 2023 18:56:02 +0800
From: kernel test robot <lkp@...el.com>
To: Robert Elliott <elliott@....com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org,
Herbert Xu <herbert@...dor.apana.org.au>
Subject: arch/arm/crypto/sha512-neon-glue.c:37:3: warning: cast from 'void
(*)(u64 *, const u8 *, int)' (aka 'void (*)(unsigned long long *, const
unsigned char *, int)') to 'sha512_block_fn *' (aka 'void (*)(struct
sha512_state *, const unsigned char *, int)') co...
Hi Robert,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 0a71553536d270e988580a3daa9fc87535908221
commit: 4a329fecc9aaebb27a53fa7abfa53bbc2ee42f3f crypto: Kconfig - submenus for arm and arm64
date: 4 months ago
config: arm-randconfig-r026-20230107
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 8d9828ef5aa9688500657d36cd2aefbe12bbd162)
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 arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4a329fecc9aaebb27a53fa7abfa53bbc2ee42f3f
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 4a329fecc9aaebb27a53fa7abfa53bbc2ee42f3f
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/crypto/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> arch/arm/crypto/sha512-neon-glue.c:37:3: warning: cast from 'void (*)(u64 *, const u8 *, int)' (aka 'void (*)(unsigned long long *, const unsigned char *, int)') to 'sha512_block_fn *' (aka 'void (*)(struct sha512_state *, const unsigned char *, int)') converts to incompatible function type [-Wcast-function-type-strict]
(sha512_block_fn *)sha512_block_data_order_neon);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm/crypto/sha512-neon-glue.c:52:4: warning: cast from 'void (*)(u64 *, const u8 *, int)' (aka 'void (*)(unsigned long long *, const unsigned char *, int)') to 'sha512_block_fn *' (aka 'void (*)(struct sha512_state *, const unsigned char *, int)') converts to incompatible function type [-Wcast-function-type-strict]
(sha512_block_fn *)sha512_block_data_order_neon);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm/crypto/sha512-neon-glue.c:54:3: warning: cast from 'void (*)(u64 *, const u8 *, int)' (aka 'void (*)(unsigned long long *, const unsigned char *, int)') to 'sha512_block_fn *' (aka 'void (*)(struct sha512_state *, const unsigned char *, int)') converts to incompatible function type [-Wcast-function-type-strict]
(sha512_block_fn *)sha512_block_data_order_neon);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3 warnings generated.
vim +37 arch/arm/crypto/sha512-neon-glue.c
c80ae7ca372606 Ard Biesheuvel 2015-05-08 22
c80ae7ca372606 Ard Biesheuvel 2015-05-08 23 asmlinkage void sha512_block_data_order_neon(u64 *state, u8 const *src,
c80ae7ca372606 Ard Biesheuvel 2015-05-08 24 int blocks);
c80ae7ca372606 Ard Biesheuvel 2015-05-08 25
c80ae7ca372606 Ard Biesheuvel 2015-05-08 26 static int sha512_neon_update(struct shash_desc *desc, const u8 *data,
c80ae7ca372606 Ard Biesheuvel 2015-05-08 27 unsigned int len)
c80ae7ca372606 Ard Biesheuvel 2015-05-08 28 {
c80ae7ca372606 Ard Biesheuvel 2015-05-08 29 struct sha512_state *sctx = shash_desc_ctx(desc);
c80ae7ca372606 Ard Biesheuvel 2015-05-08 30
99680c5e918294 Eric Biggers 2019-03-12 31 if (!crypto_simd_usable() ||
c80ae7ca372606 Ard Biesheuvel 2015-05-08 32 (sctx->count[0] % SHA512_BLOCK_SIZE) + len < SHA512_BLOCK_SIZE)
c80ae7ca372606 Ard Biesheuvel 2015-05-08 33 return sha512_arm_update(desc, data, len);
c80ae7ca372606 Ard Biesheuvel 2015-05-08 34
c80ae7ca372606 Ard Biesheuvel 2015-05-08 35 kernel_neon_begin();
c80ae7ca372606 Ard Biesheuvel 2015-05-08 36 sha512_base_do_update(desc, data, len,
c80ae7ca372606 Ard Biesheuvel 2015-05-08 @37 (sha512_block_fn *)sha512_block_data_order_neon);
c80ae7ca372606 Ard Biesheuvel 2015-05-08 38 kernel_neon_end();
c80ae7ca372606 Ard Biesheuvel 2015-05-08 39
c80ae7ca372606 Ard Biesheuvel 2015-05-08 40 return 0;
c80ae7ca372606 Ard Biesheuvel 2015-05-08 41 }
c80ae7ca372606 Ard Biesheuvel 2015-05-08 42
:::::: The code at line 37 was first introduced by commit
:::::: c80ae7ca372606a3971dcdfa3420275cf17ef6b6 crypto: arm/sha512 - accelerated SHA-512 using ARM generic ASM and NEON
:::::: TO: Ard Biesheuvel <ard.biesheuvel@...aro.org>
:::::: CC: Herbert Xu <herbert@...dor.apana.org.au>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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