linux-kernel - Re: [driver-core:driver-core-testing 28/31] WARNING: modpost: vmlinux.o(.text.unlikely+0x156c): Section mismatch in reference from the function bitmap_equal() to the variable .init.data:initcall_level

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Message-ID: <YRi1J5iL9kdL5+Ng@kroah.com>
Date:   Sun, 15 Aug 2021 08:33:11 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Barry Song <21cnbao@...il.com>
Cc:     Barry Song <song.bao.hua@...ilicon.com>,
        "open list:STAGING SUBSYSTEM" <devel@...verdev.osuosl.org>,
        kbuild-all@...ts.01.org, LKML <linux-kernel@...r.kernel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [driver-core:driver-core-testing 28/31] WARNING: modpost:
 vmlinux.o(.text.unlikely+0x156c): Section mismatch in reference from the
 function bitmap_equal() to the variable .init.data:initcall_level_names

On Sun, Aug 15, 2021 at 03:27:04PM +1200, Barry Song wrote:
> On Sun, Aug 15, 2021 at 1:36 AM Greg Kroah-Hartman
> <gregkh@...uxfoundation.org> wrote:
> >
> > On Sat, Aug 14, 2021 at 07:03:00PM +0800, kernel test robot wrote:
> > > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-testing
> > > head:   3b35f2a6a625126c57475aa56b5357d8e80b404c
> > > commit: 291f93ca339f5b5e6e90ad037bb8271f0f618165 [28/31] lib: test_bitmap: add bitmap_print_bitmask/list_to_buf test cases
> > > config: xtensa-randconfig-r004-20210814 (attached as .config)
> > > compiler: xtensa-linux-gcc (GCC) 11.2.0
> > > 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://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git/commit/?id=291f93ca339f5b5e6e90ad037bb8271f0f618165
> > >         git remote add driver-core https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
> > >         git fetch --no-tags driver-core driver-core-testing
> > >         git checkout 291f93ca339f5b5e6e90ad037bb8271f0f618165
> > >         # save the attached .config to linux build tree
> > >         mkdir build_dir
> > >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=xtensa 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.unlikely+0x156c): Section mismatch in reference from the function bitmap_equal() to the variable .init.data:initcall_level_names
> > > The function bitmap_equal() references
> > > the variable __initdata initcall_level_names.
> > > This is often because bitmap_equal lacks a __initdata
> > > annotation or the annotation of initcall_level_names is wrong.
> > >
> > > The below error/warnings are from parent commit:
> > > << WARNING: modpost: vmlinux.o(.data+0x1a86d8): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:__setup_str_initcall_blacklist
> > > << WARNING: modpost: vmlinux.o(.data+0x1a87c8): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:__setup_str_initcall_blacklist
> > > << WARNING: modpost: vmlinux.o(.data+0x1a8948): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:__setup_str_initcall_blacklist
> > >
> > > ---
> > > 0-DAY CI Kernel Test Service, Intel Corporation
> > > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
> >
> > Barry, can I get a fix for this?
> 
> Hi Greg,
> As I replied to Andy, this warning has nothing to do with my commit as my
> commit doesn't call the involved functions at all.
> 
> It has been there for more than one year. but i still send a patch for
> this issue
> over here:
> https://lore.kernel.org/lkml/20210815032132.14530-1-21cnbao@gmail.com/T/#u
> 
> Note this patch is not fixing the latest commits. It is a general
> patch for bitmap.

Ah, ok, nevermind, I missed that.

greg k-h