linux-kernel - [ammarfaizi2-block:crng/random/jd/vdso 9/9] arch/x86/entry/vdso/vgetrandom.c:11: undefined reference to `__fentry_

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Date:   Sun, 31 Jul 2022 15:20:49 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Jason A. Donenfeld" <zx2c4@...nel.org>
Cc:     kbuild-all@...ts.01.org, Ammar Faizi <ammarfaizi2@...weeb.org>,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org
Subject: [ammarfaizi2-block:crng/random/jd/vdso 9/9]
 arch/x86/entry/vdso/vgetrandom.c:11: undefined reference to `__fentry__'

tree:   https://github.com/ammarfaizi2/linux-block crng/random/jd/vdso
head:   a216645bda19c97d0f68f9b83351696ecd251eb5
commit: a216645bda19c97d0f68f9b83351696ecd251eb5 [9/9] random: implement getrandom() in vDSO
config: x86_64-rhel-8.3-syz (https://download.01.org/0day-ci/archive/20220731/202207311544.Ik8B39of-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/ammarfaizi2/linux-block/commit/a216645bda19c97d0f68f9b83351696ecd251eb5
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block crng/random/jd/vdso
        git checkout a216645bda19c97d0f68f9b83351696ecd251eb5
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 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 >>):

   ld: arch/x86/entry/vdso/vgetrandom.o: warning: relocation in read-only section `__mcount_loc'
   ld: arch/x86/entry/vdso/vgetrandom.o: in function `chacha_permute':
>> arch/x86/entry/vdso/../../../../lib/vdso/../crypto/chacha.c:17: undefined reference to `__fentry__'
   ld: arch/x86/entry/vdso/vgetrandom.o: in function `chacha_block_generic':
   arch/x86/entry/vdso/../../../../lib/vdso/../crypto/chacha.c:77: undefined reference to `__fentry__'
   ld: arch/x86/entry/vdso/vgetrandom.o: in function `hchacha_block_generic':
   arch/x86/entry/vdso/../../../../lib/vdso/../crypto/chacha.c:104: undefined reference to `__fentry__'
   ld: arch/x86/entry/vdso/vgetrandom.o: in function `__vdso_getrandom':
>> arch/x86/entry/vdso/vgetrandom.c:11: undefined reference to `__fentry__'
   ld: arch/x86/entry/vdso/vgetrandom.o: in function `__vdso_getrandom_alloc':
   arch/x86/entry/vdso/vgetrandom.c:19: undefined reference to `__fentry__'
   ld: warning: creating DT_TEXTREL in a shared object
>> objdump: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file
--
>> objcopy: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file


vim +11 arch/x86/entry/vdso/vgetrandom.c

     9	
    10	ssize_t __vdso_getrandom(void *state, void *buffer, size_t len, unsigned int flags)
  > 11	{
    12		return __cvdso_getrandom(state, buffer, len, flags);
    13	}
    14	

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