Re: [PATCH v5 2/6] scripts/sorttable: Have mcount rela sort use direct values

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On Mon, 24 Feb 2025 22:10:53 +0100
"Arnd Bergmann" <arnd@xxxxxxxx> wrote:

> This is what I get on arm64 randconfig builds using clang after your
> patch:
> 
>   failed to sort mcount 'Expected 24260 mcount elements but found 0
>   ': vmlinux
>   Failed to sort kernel tables
> 
> I have not tried to understand what your patch does. See the attached
> defconfig for a reproducer.

Hmm, I haven't tried building this with clang.

Can you compile without that commit, run and give me the output from these
two programs:

 ./dump_elf_sym vmlinux __start_mcount_loc __stop_mcount_loc
 ./dump_elf_rela vmlinux .rela.dyn

If the second one fails, remove the '.rela.dyn' and see what that shows.

 https://rostedt.org/code/dump_elf_sym.c
 https://rostedt.org/code/dump_elf_rela.c


Thanks,

-- Steve




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