Hi Aaron, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.4.y head: 26e2ad2acac73730fe99e6cfd43a2019b904d983 commit: b60b53d4980f879884740e672d83155980d74445 [6439/9999] printk: help pr_debug and pr_devel to optimize out arguments config: h8300-randconfig-r026-20220130 (https://download.01.org/0day-ci/archive/20220131/202201310535.VmQma3Z4-lkp@xxxxxxxxx/config) compiler: h8300-linux-gcc (GCC) 7.5.0 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/stable/linux-stable-rc.git/commit/?id=b60b53d4980f879884740e672d83155980d74445 git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git fetch --no-tags linux-stable-rc linux-4.4.y git checkout b60b53d4980f879884740e672d83155980d74445 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 make.cross O=build_dir ARCH=h8300 SHELL=/bin/bash lib/842/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from lib/842/842_decompress.c:23:0: lib/842/842_debugfs.h: In function 'sw842_debugfs_create': lib/842/842_debugfs.h:27:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < ARRAY_SIZE(template_count); i++) { ^ lib/842/842_decompress.c: In function 'next_bits': lib/842/842_decompress.c:115:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (DIV_ROUND_UP(bits, 8) > p->ilen) ^ In file included from arch/h8300/include/asm/bug.h:7:0, from include/linux/bug.h:4, from include/linux/thread_info.h:11, from include/asm-generic/preempt.h:4, from arch/h8300/include/generated/asm/preempt.h:1, from include/linux/preempt.h:59, from include/linux/spinlock.h:50, from include/linux/seqlock.h:35, from include/linux/time.h:5, from include/linux/stat.h:18, from include/linux/module.h:10, from lib/842/842.h:76, from lib/842/842_decompress.c:22: lib/842/842_decompress.c: In function '__do_index': >> include/asm-generic/bug.h:159:2: error: implicit declaration of function 'no_printk'; did you mean 'printk'? [-Werror=implicit-function-declaration] no_printk(format); \ ^ lib/842/842_decompress.c:72:3: note: in expansion of macro 'WARN' WARN(1, "pr_debug param err invalid size %x\n", s)) ^~~~ include/linux/printk.h:114:17: note: in expansion of macro 'beN_to_cpu' printk(fmt, ##__VA_ARGS__); \ ^~~~~~~~~~~ include/linux/printk.h:289:2: note: in expansion of macro 'no_printk' no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) ^~~~~~~~~ lib/842/842_decompress.c:205:2: note: in expansion of macro 'pr_debug' pr_debug("index%x to %lx off %lx adjoff %lx tot %lx data %lx\n", ^~~~~~~~ lib/842/842_decompress.c:71:54: warning: signed and unsigned type in conditional expression [-Wsign-compare] (s) == 8 ? be64_to_cpu(get_unaligned((__be64 *)d)) : \ ^ include/linux/printk.h:114:17: note: in expansion of macro 'beN_to_cpu' printk(fmt, ##__VA_ARGS__); \ ^~~~~~~~~~~ include/linux/printk.h:289:2: note: in expansion of macro 'no_printk' no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) ^~~~~~~~~ lib/842/842_decompress.c:205:2: note: in expansion of macro 'pr_debug' pr_debug("index%x to %lx off %lx adjoff %lx tot %lx data %lx\n", ^~~~~~~~ cc1: some warnings being treated as errors vim +159 include/asm-generic/bug.h b607e70ec6a982 Josh Triplett 2014-04-07 155 b607e70ec6a982 Josh Triplett 2014-04-07 156 #ifndef WARN b607e70ec6a982 Josh Triplett 2014-04-07 157 #define WARN(condition, format...) ({ \ b607e70ec6a982 Josh Triplett 2014-04-07 158 int __ret_warn_on = !!(condition); \ 4e50ebde32bed6 Josh Triplett 2014-04-07 @159 no_printk(format); \ b607e70ec6a982 Josh Triplett 2014-04-07 160 unlikely(__ret_warn_on); \ b607e70ec6a982 Josh Triplett 2014-04-07 161 }) b607e70ec6a982 Josh Triplett 2014-04-07 162 #endif b607e70ec6a982 Josh Triplett 2014-04-07 163 :::::: The code at line 159 was first introduced by commit :::::: 4e50ebde32bed67a9aec8c239bbd89e5d0b8727b bug: when !CONFIG_BUG, make WARN call no_printk to check format and args :::::: TO: Josh Triplett <josh@xxxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
