tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: ee6050c8af96bba2f81e8b0793a1fc2f998fcd20 commit: 4a329fecc9aaebb27a53fa7abfa53bbc2ee42f3f crypto: Kconfig - submenus for arm and arm64 date: 2 months ago config: arm-randconfig-r023-20221104 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 2bbafe04fe785a9469bea5a3737f8d7d3ce4aca2) 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 SHELL=/bin/bash arch/arm/crypto/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> arch/arm/crypto/sha1_glue.c:34:8: warning: cast from 'void (*)(u32 *, const unsigned char *, unsigned int)' (aka 'void (*)(unsigned int *, const unsigned char *, unsigned int)') to 'sha1_block_fn *' (aka 'void (*)(struct sha1_state *, const unsigned char *, int)') converts to incompatible function type [-Wcast-function-type-strict] (sha1_block_fn *)sha1_block_data_order); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm/crypto/sha1_glue.c:40:30: warning: cast from 'void (*)(u32 *, const unsigned char *, unsigned int)' (aka 'void (*)(unsigned int *, const unsigned char *, unsigned int)') to 'sha1_block_fn *' (aka 'void (*)(struct sha1_state *, const unsigned char *, int)') converts to incompatible function type [-Wcast-function-type-strict] sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_block_data_order); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm/crypto/sha1_glue.c:48:8: warning: cast from 'void (*)(u32 *, const unsigned char *, unsigned int)' (aka 'void (*)(unsigned int *, const unsigned char *, unsigned int)') to 'sha1_block_fn *' (aka 'void (*)(struct sha1_state *, const unsigned char *, int)') converts to incompatible function type [-Wcast-function-type-strict] (sha1_block_fn *)sha1_block_data_order); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 3 warnings generated. vim +34 arch/arm/crypto/sha1_glue.c f0be44f4fb1faee David McCullough 2012-09-07 23 1f8673d31a999ed Jussi Kivilinna 2014-07-29 24 asmlinkage void sha1_block_data_order(u32 *digest, f0be44f4fb1faee David McCullough 2012-09-07 25 const unsigned char *data, unsigned int rounds); f0be44f4fb1faee David McCullough 2012-09-07 26 604682551aa511e Jussi Kivilinna 2014-07-29 27 int sha1_update_arm(struct shash_desc *desc, const u8 *data, f0be44f4fb1faee David McCullough 2012-09-07 28 unsigned int len) f0be44f4fb1faee David McCullough 2012-09-07 29 { 90451d6bdb787e1 Ard Biesheuvel 2015-04-09 30 /* make sure casting to sha1_block_fn() is safe */ 90451d6bdb787e1 Ard Biesheuvel 2015-04-09 31 BUILD_BUG_ON(offsetof(struct sha1_state, state) != 0); f0be44f4fb1faee David McCullough 2012-09-07 32 90451d6bdb787e1 Ard Biesheuvel 2015-04-09 33 return sha1_base_do_update(desc, data, len, 90451d6bdb787e1 Ard Biesheuvel 2015-04-09 @34 (sha1_block_fn *)sha1_block_data_order); f0be44f4fb1faee David McCullough 2012-09-07 35 } 604682551aa511e Jussi Kivilinna 2014-07-29 36 EXPORT_SYMBOL_GPL(sha1_update_arm); f0be44f4fb1faee David McCullough 2012-09-07 37 :::::: The code at line 34 was first introduced by commit :::::: 90451d6bdb787e1631c6ce4619221eb59562343c crypto: arm/sha1 - move SHA-1 ARM asm implementation to base layer :::::: TO: Ard Biesheuvel :::::: CC: Herbert Xu -- 0-DAY CI Kernel Test Service https://01.org/lkp