Re: [PATCH 2/2] selftests/fpu: Add an FPU selftest

[kernel test robot <lkp@intel.com>]

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In-Reply-To: <20200619174127.22304-3-bp@alien8.de>
References: <20200619174127.22304-3-bp@alien8.de>
TO: Borislav Petkov <bp@alien8.de>
TO: X86 ML <x86@kernel.org>
CC: jpa(a)kernelbug.mail.kapsi.fi
CC: Dave Hansen <dave.hansen@intel.com>
CC: LKML <linux-kernel@vger.kernel.org>

Hi Borislav,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on kselftest/next]
[also build test ERROR on tip/auto-latest linus/master v5.8-rc1 next-20200618]
[cannot apply to tip/x86/core]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use  as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Borislav-Petkov/x86-FPU-FPU-sanitization-for-in-kernel-use/20200620-014453
base:   https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git next
config: x86_64-allyesconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 487ca07fcc75d52755c9fe2ee05bcb3b6eeeec44)
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
        # 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 <lkp@intel.com>

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: __adddf3
   >>> referenced by test_fpu.c
   >>> test_fpu.o:(test_fpu_get) in archive lib/built-in.a
   >>> referenced by test_fpu.c
   >>> test_fpu.o:(test_fpu_get) in archive lib/built-in.a
   >>> referenced by test_fpu.c
   >>> test_fpu.o:(test_fpu_get) in archive lib/built-in.a
--
>> ld.lld: error: undefined symbol: __muldf3
   >>> referenced by test_fpu.c
   >>> test_fpu.o:(test_fpu_get) in archive lib/built-in.a
   >>> referenced by test_fpu.c
   >>> test_fpu.o:(test_fpu_get) in archive lib/built-in.a
--
>> ld.lld: error: undefined symbol: __divdf3
   >>> referenced by test_fpu.c
   >>> test_fpu.o:(test_fpu_get) in archive lib/built-in.a
--
>> ld.lld: error: undefined symbol: __gtdf2
   >>> referenced by test_fpu.c
   >>> test_fpu.o:(test_fpu_get) in archive lib/built-in.a
   >>> referenced by test_fpu.c
   >>> test_fpu.o:(test_fpu_get) in archive lib/built-in.a
   >>> referenced by test_fpu.c
   >>> test_fpu.o:(test_fpu_get) in archive lib/built-in.a

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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