# \[powerpc:next-test 117/188\] arch/powerpc/mm/nohash/e500.c:314:21: error: no previous prototype for function 'relocate\_init' - From: kernel test robot \ - Date: 2022-09-30 04:40:49 - List: linuxppc-dev - Page: https://ratatoskr.run/linuxppc-dev/2022/09/9528532 - Thread: https://ratatoskr.run/linuxppc-dev/2022/09/9528532/t.md ```text Hi Christophe, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next-test head: 335e1a91042764629fbbcd8c7e40379fa3762d35 commit: 3e7318584dfec11992f3ac45658c4bc1210b3778 [117/188] powerpc: Remove CONFIG_PPC_FSL_BOOK3E config: powerpc-randconfig-r035-20220925 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920) 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 powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id=3e7318584dfec11992f3ac45658c4bc1210b3778 git remote add powerpc https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git git fetch --no-tags powerpc next-test git checkout 3e7318584dfec11992f3ac45658c4bc1210b3778 # 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=powerpc SHELL=/bin/bash arch/powerpc/mm/nohash/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot [ref] Note: functions only called from assembly code should be annotated with the asmlinkage attribute All errors (new ones prefixed by >>): __do_##name al; \ ^~~~~~~~~~~~~~ :104:1: note: expanded from here __do_insw ^ arch/powerpc/include/asm/io.h:578:56: note: expanded from macro '__do_insw' #define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from arch/powerpc/mm/nohash/e500.c:32: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:640: arch/powerpc/include/asm/io-defs.h:47:1: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ :106:1: note: expanded from here __do_insl ^ arch/powerpc/include/asm/io.h:579:56: note: expanded from macro '__do_insl' #define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from arch/powerpc/mm/nohash/e500.c:32: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:640: arch/powerpc/include/asm/io-defs.h:49:1: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ :108:1: note: expanded from here __do_outsb ^ arch/powerpc/include/asm/io.h:580:58: note: expanded from macro '__do_outsb' #define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from arch/powerpc/mm/nohash/e500.c:32: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:640: arch/powerpc/include/asm/io-defs.h:51:1: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ :110:1: note: expanded from here __do_outsw ^ arch/powerpc/include/asm/io.h:581:58: note: expanded from macro '__do_outsw' #define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from arch/powerpc/mm/nohash/e500.c:32: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:640: arch/powerpc/include/asm/io-defs.h:53:1: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ :112:1: note: expanded from here __do_outsl ^ arch/powerpc/include/asm/io.h:582:58: note: expanded from macro '__do_outsl' #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ >> arch/powerpc/mm/nohash/e500.c:314:21: error: no previous prototype for function 'relocate_init' [-Werror,-Wmissing-prototypes] notrace void __init relocate_init(u64 dt_ptr, phys_addr_t start) ^ arch/powerpc/mm/nohash/e500.c:314:9: note: declare 'static' if the function is not intended to be used outside of this translation unit notrace void __init relocate_init(u64 dt_ptr, phys_addr_t start) ^ static 7 errors generated. vim +/relocate_init +314 arch/powerpc/mm/nohash/e500.c dd189692d40948d arch/powerpc/mm/fsl_booke_mmu.c Kevin Hao 2013-12-24 311 dd189692d40948d arch/powerpc/mm/fsl_booke_mmu.c Kevin Hao 2013-12-24 312 #ifdef CONFIG_RELOCATABLE 7d2471f9fa85089 arch/powerpc/mm/fsl_booke_mmu.c Kevin Hao 2013-12-24 313 int __initdata is_second_reloc; 7d2471f9fa85089 arch/powerpc/mm/fsl_booke_mmu.c Kevin Hao 2013-12-24 @314 notrace void __init relocate_init(u64 dt_ptr, phys_addr_t start) :::::: The code at line 314 was first introduced by commit :::::: 7d2471f9fa85089beb1cb9436ffc28f9e11e518d powerpc/fsl_booke: make sure PAGE_OFFSET map to memstart_addr for relocatable kernel :::::: TO: Kevin Hao [ref] :::::: CC: Scott Wood [ref] -- 0-DAY CI Kernel Test Service https://01.org/lkp ``` ## Attachments - [config](https://ratatoskr.run/linuxppc-dev/2022/09/9528532/attachment/0) (text/plain, 146935 bytes)