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* [luto:x86/no_sce 1/2] arch/x86/kernel/cpu/common.c:1753:35: error: use of undeclared identifier 'entry_SYSCALL_compat'
@ 2021-09-29 19:47 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-09-29 19:47 UTC (permalink / raw)
  To: Andy Lutomirski; +Cc: llvm, kbuild-all, linux-kernel

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tree: x86/no_sce
head:   bfaecaf0dad8f61e80285125f4895c9737e3d6d8
commit: bf85057ed696c8996a5f5b924a3fd58698450511 [1/2] x86/syscall: Remove the IA32_EMULATION=n compat syscall code
config: x86_64-randconfig-a011-20210929 (attached as .config)
compiler: clang version 14.0.0 ( dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
reproduce (this is a W=1 build):
        wget -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add luto
        git fetch --no-tags luto x86/no_sce
        git checkout bf85057ed696c8996a5f5b924a3fd58698450511
        # save the attached .config 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 arch/x86/

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

All errors (new ones prefixed by >>):

>> arch/x86/kernel/cpu/common.c:1753:35: error: use of undeclared identifier 'entry_SYSCALL_compat'
           wrmsrl(MSR_CSTAR, (unsigned long)entry_SYSCALL_compat);
   1 error generated.

vim +/entry_SYSCALL_compat +1753 arch/x86/kernel/cpu/common.c

  1748	/* May not be marked __init: used by software suspend */
  1749	void syscall_init(void)
  1750	{
  1751		wrmsr(MSR_STAR, 0, (__USER32_CS << 16) | __KERNEL_CS);
  1752		wrmsrl(MSR_LSTAR, (unsigned long)entry_SYSCALL_64);
> 1753		wrmsrl(MSR_CSTAR, (unsigned long)entry_SYSCALL_compat);

0-DAY CI Kernel Test Service, Intel Corporation

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