linux-kernel - Re: [PATCH] tracing: Add snapshot at end of kernel boot up

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Message-ID: <202203120019.Oteoj0K7-lkp@intel.com>
Date:   Sat, 12 Mar 2022 00:27:05 +0800
From:   kernel test robot <lkp@...el.com>
To:     Steven Rostedt <rostedt@...dmis.org>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Tom Zanussi <zanussi@...nel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH] tracing: Add snapshot at end of kernel boot up

Hi Steven,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on rostedt-trace/for-next]
[also build test WARNING on linux/master hnaz-mm/master linus/master v5.17-rc7 next-20220310]
[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]

url:    https://github.com/0day-ci/linux/commits/Steven-Rostedt/tracing-Add-snapshot-at-end-of-kernel-boot-up/20220311-104216
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next
config: x86_64-randconfig-a001 (https://download.01.org/0day-ci/archive/20220312/202203120019.Oteoj0K7-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 276ca87382b8f16a65bddac700202924228982f6)
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/0day-ci/linux/commit/60ed6397c93a264f9ccbc8a6ca0b3ecc4dfdf6da
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Steven-Rostedt/tracing-Add-snapshot-at-end-of-kernel-boot-up/20220311-104216
        git checkout 60ed6397c93a264f9ccbc8a6ca0b3ecc4dfdf6da
        # 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=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> WARNING: modpost: vmlinux.o(.text+0x179120): Section mismatch in reference from the function do_init_module() to the function .init.text:ftrace_boot_snapshot()
The function do_init_module() references
the function __init ftrace_boot_snapshot().
This is often because do_init_module lacks a __init
annotation or the annotation of ftrace_boot_snapshot is wrong.

---
0-DAY CI Kernel Test Service
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org