[hnaz-linux-mm:master 179/239] include/linux/thread_info.h:215:27: error: 'INT_MAX' undeclared

From: kernel test robot <lkp@intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: kbuild-all@lists.01.org, Johannes Weiner <hannes@cmpxchg.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Linux Memory Management List <linux-mm@kvack.org>
Subject: [hnaz-linux-mm:master 179/239] include/linux/thread_info.h:215:27: error: 'INT_MAX' undeclared
Date: Thu, 13 May 2021 17:36:14 +0800	[thread overview]
Message-ID: <202105131700.z2HuiNSx-lkp@intel.com> (raw)

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tree:   https://github.com/hnaz/linux-mm master
head:   12891f829e4851b3562ddcde27a4a9ade308ada3
commit: 161b082aa6ac5047f1b0f243f0e834d2bfb39842 [179/239] kernel.h: split out panic and oops helpers
config: nds32-defconfig (attached as .config)
compiler: nds32le-linux-gcc (GCC) 9.3.0
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
        # https://github.com/hnaz/linux-mm/commit/161b082aa6ac5047f1b0f243f0e834d2bfb39842
        git remote add hnaz-linux-mm https://github.com/hnaz/linux-mm
        git fetch --no-tags hnaz-linux-mm master
        git checkout 161b082aa6ac5047f1b0f243f0e834d2bfb39842
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=nds32 

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

Note: the hnaz-linux-mm/master HEAD 12891f829e4851b3562ddcde27a4a9ade308ada3 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   In file included from ./arch/nds32/include/generated/asm/bug.h:1,
                    from include/linux/bug.h:5,
                    from include/linux/thread_info.h:12,
                    from lib/strncpy_from_user.c:6:
   include/linux/thread_info.h: In function 'check_copy_size':
>> include/linux/thread_info.h:215:27: error: 'INT_MAX' undeclared (first use in this function)
     215 |  if (WARN_ON_ONCE(bytes > INT_MAX))
         |                           ^~~~~~~
   include/asm-generic/bug.h:146:27: note: in definition of macro 'WARN_ON_ONCE'
     146 |  int __ret_warn_once = !!(condition);   \
         |                           ^~~~~~~~~
   In file included from lib/strncpy_from_user.c:6:
   include/linux/thread_info.h:60:1: note: 'INT_MAX' is defined in header '<limits.h>'; did you forget to '#include <limits.h>'?
      59 | #include <asm/thread_info.h>
     +++ |+#include <limits.h>
      60 | 
   In file included from ./arch/nds32/include/generated/asm/bug.h:1,
                    from include/linux/bug.h:5,
                    from include/linux/thread_info.h:12,
                    from lib/strncpy_from_user.c:6:
   include/linux/thread_info.h:215:27: note: each undeclared identifier is reported only once for each function it appears in
     215 |  if (WARN_ON_ONCE(bytes > INT_MAX))
         |                           ^~~~~~~
   include/asm-generic/bug.h:146:27: note: in definition of macro 'WARN_ON_ONCE'
     146 |  int __ret_warn_once = !!(condition);   \
         |                           ^~~~~~~~~

vim +/INT_MAX +215 include/linux/thread_info.h

b0377fedb65280 Al Viro   2017-06-29  201  
9dd819a15162f8 Kees Cook 2019-09-25  202  static __always_inline __must_check bool
b0377fedb65280 Al Viro   2017-06-29  203  check_copy_size(const void *addr, size_t bytes, bool is_source)
b0377fedb65280 Al Viro   2017-06-29  204  {
b0377fedb65280 Al Viro   2017-06-29  205  	int sz = __compiletime_object_size(addr);
b0377fedb65280 Al Viro   2017-06-29  206  	if (unlikely(sz >= 0 && sz < bytes)) {
b0377fedb65280 Al Viro   2017-06-29  207  		if (!__builtin_constant_p(bytes))
b0377fedb65280 Al Viro   2017-06-29  208  			copy_overflow(sz, bytes);
b0377fedb65280 Al Viro   2017-06-29  209  		else if (is_source)
b0377fedb65280 Al Viro   2017-06-29  210  			__bad_copy_from();
b0377fedb65280 Al Viro   2017-06-29  211  		else
b0377fedb65280 Al Viro   2017-06-29  212  			__bad_copy_to();
b0377fedb65280 Al Viro   2017-06-29  213  		return false;
b0377fedb65280 Al Viro   2017-06-29  214  	}
6d13de1489b6bf Kees Cook 2019-12-04 @215  	if (WARN_ON_ONCE(bytes > INT_MAX))
6d13de1489b6bf Kees Cook 2019-12-04  216  		return false;
b0377fedb65280 Al Viro   2017-06-29  217  	check_object_size(addr, bytes, is_source);
b0377fedb65280 Al Viro   2017-06-29  218  	return true;
b0377fedb65280 Al Viro   2017-06-29  219  }
b0377fedb65280 Al Viro   2017-06-29  220  

:::::: The code at line 215 was first introduced by commit
:::::: 6d13de1489b6bf539695f96d945de3860e6d5e17 uaccess: disallow > INT_MAX copy sizes

:::::: TO: Kees Cook <keescook@chromium.org>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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

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