linux-kernel - Re: [PATCH v7 11/11] kallsyms: Add self-test facility

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Date:   Wed, 19 Oct 2022 16:39:12 +0800
From:   "Leizhen (ThunderTown)" <thunder.leizhen@...wei.com>
To:     kernel test robot <lkp@...el.com>,
        Josh Poimboeuf <jpoimboe@...nel.org>,
        Jiri Kosina <jikos@...nel.org>,
        Miroslav Benes <mbenes@...e.cz>,
        Petr Mladek <pmladek@...e.com>,
        Joe Lawrence <joe.lawrence@...hat.com>,
        <live-patching@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Masahiro Yamada" <masahiroy@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Luis Chamberlain <mcgrof@...nel.org>,
        <linux-modules@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        "Ingo Molnar" <mingo@...hat.com>
CC:     <kbuild-all@...ts.01.org>,
        Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: [PATCH v7 11/11] kallsyms: Add self-test facility



On 2022/10/18 17:32, kernel test robot wrote:
> Hi Zhen,
> 
> Thank you for the patch! Yet something to improve:
> 
> [auto build test ERROR on masahiroy-kbuild/for-next]
> [also build test ERROR on linus/master v6.1-rc1 next-20221018]
> [cannot apply to mcgrof/modules-next]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Zhen-Lei/kallsyms-Optimizes-the-performance-of-lookup-symbols/20221017-145455
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
> patch link:    https://lore.kernel.org/r/20221017064950.2038-12-thunder.leizhen%40huawei.com
> patch subject: [PATCH v7 11/11] kallsyms: Add self-test facility
> config: mips-allyesconfig
> compiler: mips-linux-gcc (GCC) 12.1.0
> 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://github.com/intel-lab-lkp/linux/commit/3f5fc7fa1f657df865ef14b2d24f837a7cc079c9
>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>         git fetch --no-tags linux-review Zhen-Lei/kallsyms-Optimizes-the-performance-of-lookup-symbols/20221017-145455
>         git checkout 3f5fc7fa1f657df865ef14b2d24f837a7cc079c9
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@...el.com>>
> All errors (new ones prefixed by >>):
> 
>    arch/mips/kernel/head.o: in function `kernel_entry':
>    (.ref.text+0xac): relocation truncated to fit: R_MIPS_26 against `start_kernel'
>    init/main.o: in function `set_reset_devices':
>    main.c:(.init.text+0x20): relocation truncated to fit: R_MIPS_26 against `_mcount'
>    main.c:(.init.text+0x30): relocation truncated to fit: R_MIPS_26 against `__sanitizer_cov_trace_pc'
>    init/main.o: in function `debug_kernel':
>    main.c:(.init.text+0xa4): relocation truncated to fit: R_MIPS_26 against `_mcount'
>    main.c:(.init.text+0xb4): relocation truncated to fit: R_MIPS_26 against `__sanitizer_cov_trace_pc'
>    init/main.o: in function `quiet_kernel':
>    main.c:(.init.text+0x128): relocation truncated to fit: R_MIPS_26 against `_mcount'
>    main.c:(.init.text+0x138): relocation truncated to fit: R_MIPS_26 against `__sanitizer_cov_trace_pc'
>    init/main.o: in function `warn_bootconfig':
>    main.c:(.init.text+0x1ac): relocation truncated to fit: R_MIPS_26 against `_mcount'
>    main.c:(.init.text+0x1bc): relocation truncated to fit: R_MIPS_26 against `__sanitizer_cov_trace_pc'
>    init/main.o: in function `init_setup':
>    main.c:(.init.text+0x234): relocation truncated to fit: R_MIPS_26 against `_mcount'
>    main.c:(.init.text+0x254): additional relocation overflows omitted from the output
>    mips-linux-ld: kernel/kallsyms_selftest.o: in function `test_perf_kallsyms_lookup_name':
>>> kallsyms_selftest.c:(.text.unlikely.test_perf_kallsyms_lookup_name+0x100): undefined reference to `__udivdi3'

OK, thanks. I will fix it in the next version.

> 

-- 
Regards,
  Zhen Lei