[rgushchin:kmem_reparent.2 253/327] fs/binfmt_elf.c:1140:7: error: 'elf_interpreter' undeclared; did you mean 'interpreter'?

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

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tree:   https://github.com/rgushchin/linux.git kmem_reparent.2
head:   3239ac71c274fa41b651ec92e43cbb18cc5b8112
commit: e0477c3bfa481937438fa6733bcb70e1d8f3d1a9 [253/327] fs/binfmt_elf.c: move brk out of mmap when doing direct loader exec
config: x86_64-randconfig-h1-201915 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout e0477c3bfa481937438fa6733bcb70e1d8f3d1a9
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>


Note: the rgushchin/kmem_reparent.2 HEAD 3239ac71c274fa41b651ec92e43cbb18cc5b8112 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   fs/binfmt_elf.c: In function 'load_elf_binary':
>> fs/binfmt_elf.c:1140:7: error: 'elf_interpreter' undeclared (first use in this function); did you mean 'interpreter'?
     if (!elf_interpreter)
          ^~~~~~~~~~~~~~~
          interpreter
   fs/binfmt_elf.c:1140:7: note: each undeclared identifier is reported only once for each function it appears in

vim +1140 fs/binfmt_elf.c

  1122	
  1123		retval = create_elf_tables(bprm, &loc->elf_ex,
  1124				  load_addr, interp_load_addr);
  1125		if (retval < 0)
  1126			goto out;
  1127		/* N.B. passed_fileno might not be initialized? */
  1128		current->mm->end_code = end_code;
  1129		current->mm->start_code = start_code;
  1130		current->mm->start_data = start_data;
  1131		current->mm->end_data = end_data;
  1132		current->mm->start_stack = bprm->p;
  1133	
  1134		/*
  1135		 * When executing a loader directly (ET_DYN without Interp), move
  1136		 * the brk area out of the mmap region (since it grows up, and may
  1137		 * collide early with the stack growing down), and into the unused
  1138		 * ELF_ET_DYN_BASE region.
  1139		 */
> 1140		if (!elf_interpreter)
  1141			current->mm->brk = current->mm->start_brk = ELF_ET_DYN_BASE;
  1142	
  1143		if ((current->flags & PF_RANDOMIZE) && (randomize_va_space > 1)) {
  1144			current->mm->brk = current->mm->start_brk =
  1145				arch_randomize_brk(current->mm);
  1146	#ifdef compat_brk_randomized
  1147			current->brk_randomized = 1;
  1148	#endif
  1149		}
  1150	
  1151		if (current->personality & MMAP_PAGE_ZERO) {
  1152			/* Why this, you ask???  Well SVr4 maps page 0 as read-only,
  1153			   and some applications "depend" upon this behavior.
  1154			   Since we do not have the power to recompile these, we
  1155			   emulate the SVr4 behavior. Sigh. */
  1156			error = vm_mmap(NULL, 0, PAGE_SIZE, PROT_READ | PROT_EXEC,
  1157					MAP_FIXED | MAP_PRIVATE, 0);
  1158		}
  1159	

---
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