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    SubjectRe: [PATCH v5 06/12] arm64: elf: Enable BTI at exec based on ELF program properties
    Hi Mark,

    Thank you for the patch! Yet something to improve:

    [auto build test ERROR on asm-generic/master]
    [also build test ERROR on kvmarm/next linus/master v5.5-rc7]
    [cannot apply to arm64/for-next/core arm-perf/for-next/perf next-20200124]
    [if your patch is applied to the wrong git tree, please drop us a note to help
    improve the system. BTW, we also suggest to use '--base' option to specify the
    base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

    url: https://github.com/0day-ci/linux/commits/Mark-Brown/arm64-ARMv8-5-A-Branch-Target-Identification-support/20200124-203746
    base: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master
    config: arm64-allnoconfig (attached as .config)
    compiler: aarch64-linux-gcc (GCC) 7.5.0
    reproduce:
    wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
    chmod +x ~/bin/make.cross
    # save the attached .config to linux build tree
    GCC_VERSION=7.5.0 make.cross ARCH=arm64

    If you fix the issue, kindly add following tag
    Reported-by: kbuild test robot <lkp@intel.com>

    All errors (new ones prefixed by >>):

    In file included from include/linux/module.h:18:0,
    from include/linux/kallsyms.h:13,
    from include/linux/ftrace.h:11,
    from include/linux/perf_event.h:49,
    from include/kvm/arm_pmu.h:10,
    from arch/arm64/include/asm/kvm_host.h:37,
    from include/linux/kvm_host.h:36,
    from arch/arm64/kernel/asm-offsets.c:14:
    >> include/linux/elf.h:79:19: error: redefinition of 'arch_parse_elf_property'
    static inline int arch_parse_elf_property(u32 type, const void *data,
    ^~~~~~~~~~~~~~~~~~~~~~~
    In file included from include/linux/elf.h:6:0,
    from include/linux/module.h:18,
    from include/linux/kallsyms.h:13,
    from include/linux/ftrace.h:11,
    from include/linux/perf_event.h:49,
    from include/kvm/arm_pmu.h:10,
    from arch/arm64/include/asm/kvm_host.h:37,
    from include/linux/kvm_host.h:36,
    from arch/arm64/kernel/asm-offsets.c:14:
    arch/arm64/include/asm/elf.h:241:19: note: previous definition of 'arch_parse_elf_property' was here
    static inline int arch_parse_elf_property(u32 type, const void *data,
    ^~~~~~~~~~~~~~~~~~~~~~~
    make[2]: *** [arch/arm64/kernel/asm-offsets.s] Error 1
    make[2]: Target '__build' not remade because of errors.
    make[1]: *** [prepare0] Error 2
    make[1]: Target 'prepare' not remade because of errors.
    make: *** [sub-make] Error 2
    115 real 3 user 4 sys 7.44% cpu make prepare

    vim +/arch_parse_elf_property +79 include/linux/elf.h

    efb25e29b815dd Dave Martin 2020-01-22 77
    efb25e29b815dd Dave Martin 2020-01-22 78 #ifndef CONFIG_ARCH_USE_GNU_PROPERTY
    efb25e29b815dd Dave Martin 2020-01-22 @79 static inline int arch_parse_elf_property(u32 type, const void *data,
    efb25e29b815dd Dave Martin 2020-01-22 80 size_t datasz, bool compat,
    efb25e29b815dd Dave Martin 2020-01-22 81 struct arch_elf_state *arch)
    efb25e29b815dd Dave Martin 2020-01-22 82 {
    efb25e29b815dd Dave Martin 2020-01-22 83 return 0;
    efb25e29b815dd Dave Martin 2020-01-22 84 }
    efb25e29b815dd Dave Martin 2020-01-22 85 #else
    efb25e29b815dd Dave Martin 2020-01-22 86 extern int arch_parse_elf_property(u32 type, const void *data, size_t datasz,
    efb25e29b815dd Dave Martin 2020-01-22 87 bool compat, struct arch_elf_state *arch);
    efb25e29b815dd Dave Martin 2020-01-22 88 #endif
    efb25e29b815dd Dave Martin 2020-01-22 89

    :::::: The code at line 79 was first introduced by commit
    :::::: efb25e29b815ddf0dd1bbe3728659da08c80fa14 ELF: Add ELF program property parsing support

    :::::: TO: Dave Martin <Dave.Martin@arm.com>
    :::::: CC: 0day robot <lkp@intel.com>

    ---
    0-DAY kernel test infrastructure Open Source Technology Center
    https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
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