Messages in this thread | | | Date | Sat, 5 Feb 2022 09:16:58 +0800 | From | kernel test robot <> | Subject | [oracle-dtrace:v2/5.17-rc2 6/10] kernel/kallsyms.c:775:3: error: expected expression |
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tree: https://github.com/oracle/dtrace-linux-kernel v2/5.17-rc2 head: 47946e7b2e2319f39cbb7f8aaa294298c2dec5b4 commit: ea16e4ce65d8342913051086a89eac87dc54aced [6/10] kallsyms: add /proc/kallmodsyms config: s390-randconfig-r032-20220130 (https://download.01.org/0day-ci/archive/20220205/202202050909.66P7tRUv-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project a73e4ce6a59b01f0e37037761c1e6889d539d233) 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 s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://github.com/oracle/dtrace-linux-kernel/commit/ea16e4ce65d8342913051086a89eac87dc54aced git remote add oracle-dtrace https://github.com/oracle/dtrace-linux-kernel git fetch --no-tags oracle-dtrace v2/5.17-rc2 git checkout ea16e4ce65d8342913051086a89eac87dc54aced # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All error/warnings (new ones prefixed by >>):
In file included from kernel/kallsyms.c:25: In file included from include/linux/filter.h:12: In file included from include/linux/skbuff.h:31: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from kernel/kallsyms.c:25: In file included from include/linux/filter.h:12: In file included from include/linux/skbuff.h:31: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from kernel/kallsyms.c:25: In file included from include/linux/filter.h:12: In file included from include/linux/skbuff.h:31: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ kernel/kallsyms.c:666:12: warning: no previous prototype for function 'arch_get_kallsym' [-Wmissing-prototypes] int __weak arch_get_kallsym(unsigned int symnum, unsigned long *value, ^ kernel/kallsyms.c:666:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __weak arch_get_kallsym(unsigned int symnum, unsigned long *value, ^ static >> kernel/kallsyms.c:775:3: error: expected expression unsigned long mod_idx = (unsigned long) -1; ^ >> kernel/kallsyms.c:806:28: warning: comparison between pointer and integer ('unsigned long' and 'char (*)[]') [-Wpointer-integer-compare] if (likely(iter->value != &_etext)) ~~~~~~~~~~~ ^ ~~~~~~~ include/linux/compiler.h:77:40: note: expanded from macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^ kernel/kallsyms.c:804:17: warning: unused variable 'endstr' [-Wunused-variable] const char *endstr; ^ 15 warnings and 1 error generated.
vim +775 kernel/kallsyms.c
755 756 /* Returns space to next name. */ 757 static unsigned long get_ksymbol_core(struct kallsym_iter *iter, int kallmodsyms) 758 { 759 unsigned off = iter->nameoff; 760 761 iter->exported = 0; 762 iter->value = kallsyms_sym_address(iter->pos); 763 764 iter->type = kallsyms_get_symbol_type(off); 765 766 iter->module_name[0] = '\0'; 767 iter->builtin_module_names = NULL; 768 769 off = kallsyms_expand_symbol(off, iter->name, ARRAY_SIZE(iter->name)); 770 #ifdef CONFIG_KALLMODSYMS 771 if (kallmodsyms) { 772 unsigned long mod_idx = (unsigned long) -1; 773 774 if (kallsyms_module_offsets) > 775 unsigned long mod_idx = (unsigned long) -1; 776 777 if (kallsyms_module_offsets) 778 mod_idx = 779 get_builtin_module_idx(iter->value, 780 iter->hint_builtin_module_idx); 781 782 /* 783 * This is a built-in module iff the tables of built-in modules 784 * (address->module name mappings) and module names are known, 785 * and if the address was found there, and if the corresponding 786 * module index is nonzero, and iff this is a text (or weak) 787 * symbol. All other cases mean off the end of the binary or in 788 * a non-modular range in between one or more modules. (Also 789 * guard against a corrupt kallsyms_objfiles array pointing off 790 * the end of kallsyms_modules.) 791 */ 792 if (kallsyms_modules != NULL && kallsyms_module_names != NULL && 793 (iter->type == 't' || iter->type == 'T' || 794 iter->type == 'w' || iter->type == 'W') && 795 mod_idx != (unsigned long) -1 && 796 kallsyms_modules[mod_idx] != 0 && 797 kallsyms_modules[mod_idx] < kallsyms_module_names_len) { 798 /* 799 * Rule out (rare) section start/end symbols which might 800 * overlap the last symbol in .text. (Will also hit at most 801 * one symbol which really is in a built-in module, but only 802 * if that symbol is zero-length.) 803 */ 804 const char *endstr; 805 > 806 if (likely(iter->value != &_etext)) 807 iter->builtin_module_names = 808 &kallsyms_module_names[kallsyms_modules[mod_idx]]; 809 } 810 iter->hint_builtin_module_idx = mod_idx; 811 } 812 #endif 813 return off - iter->nameoff; 814 } 815
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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