Re: WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init()

[Jürgen Groß]

On 24.02.21 15:20, kernel test robot wrote:

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   c03c21ba6f4e95e406a1a7b4c34ef334b977c194
commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework 
arch_local_irq_restore() to not use popf
date:   2 weeks ago
config: x86_64-randconfig-a005-20210223 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 
f14a14dd2564703db02f80c00db8ae492b594f77)
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
         # install x86_64 cross compiling tool for clang build
         # apt-get install binutils-x86-64-linux-gnu
         # 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33
         git remote add linus 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
         git fetch --no-tags linus master
         git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33
         # save the attached .config to linux build tree
         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64

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

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

WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference 
from the function stop_machine() to the function .init.text:intel_rng_hw_init()

The function stop_machine() references
the function __init intel_rng_hw_init().
This is often because stop_machine lacks a __init
annotation or the annotation of intel_rng_hw_init is wrong.

I'd be very interested to know how the identified patch would be able to
have this effect.


Juergen

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