[linux-stable-rc:linux-4.14.y 2224/4044] include/linux/nodemask.h:371:13: error: comparison of unsigned expression >= 0 is always true

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

Hi Christophe,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y
head:   a6d71d85fd0f5c89a0e3aa52de437d22485dfa61
commit: 339aab239d54368580b9a03ceca009d83a00cfb7 [2224/4044] nodemask.h: fix compilation error with GCC12
config: alpha-randconfig-r006-20230123 (https://download.01.org/0day-ci/archive/20230123/202301231026.yRe8RaLy-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 7.5.0
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://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=339aab239d54368580b9a03ceca009d83a00cfb7
        git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        git fetch --no-tags linux-stable-rc linux-4.14.y
        git checkout 339aab239d54368580b9a03ceca009d83a00cfb7
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 make.cross W=1 O=build_dir ARCH=alpha olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 make.cross W=1 O=build_dir ARCH=alpha SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   In file included from include/linux/mmzone.h:17:0,
                    from include/linux/gfp.h:6,
                    from include/linux/mm.h:10,
                    from arch/alpha/mm/numa.c:12:
   arch/alpha/mm/numa.c: In function 'paging_init':
>> include/linux/nodemask.h:371:13: error: comparison of unsigned expression >= 0 is always true [-Werror=type-limits]
          (node >= 0) && (node) < MAX_NUMNODES;      \
                ^
   include/linux/nodemask.h:424:2: note: in expansion of macro 'for_each_node_mask'
     for_each_node_mask((__node), node_states[__state])
     ^~~~~~~~~~~~~~~~~~
   include/linux/nodemask.h:504:36: note: in expansion of macro 'for_each_node_state'
    #define for_each_online_node(node) for_each_node_state(node, N_ONLINE)
                                       ^~~~~~~~~~~~~~~~~~~
   arch/alpha/mm/numa.c:305:2: note: in expansion of macro 'for_each_online_node'
     for_each_online_node(nid) {
     ^~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +371 include/linux/nodemask.h

   367	
   368	#if MAX_NUMNODES > 1
   369	#define for_each_node_mask(node, mask)				    \
   370		for ((node) = first_node(mask);				    \
 > 371		     (node >= 0) && (node) < MAX_NUMNODES;		    \
   372		     (node) = next_node((node), (mask)))
   373	#else /* MAX_NUMNODES == 1 */
   374	#define for_each_node_mask(node, mask)                                  \
   375		for ((node) = 0; (node) < 1 && !nodes_empty(mask); (node)++)
   376	#endif /* MAX_NUMNODES */
   377	

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https://github.com/intel/lkp-tests