linux-kernel - [chunkuang-hu:pagecaller 1/2] mm/page_alloc.c:193:33: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295'

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <202207120805.VMoxhHK2-lkp@intel.com>
Date:   Tue, 12 Jul 2022 09:04:44 +0800
From:   kernel test robot <lkp@...el.com>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [chunkuang-hu:pagecaller 1/2] mm/page_alloc.c:193:33: warning:
 conversion from 'long long unsigned int' to 'long unsigned int' changes
 value from '18446744073709551615' to '4294967295'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git pagecaller
head:   de987a7312cd3e22d7d6985225db9839c3bd9818
commit: c879bb3e3a54d1e18415030a68f327dc4cf17363 [1/2] mm: Add pagecaller base trace point
config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20220712/202207120805.VMoxhHK2-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/commit/?id=c879bb3e3a54d1e18415030a68f327dc4cf17363
        git remote add chunkuang-hu https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git
        git fetch --no-tags chunkuang-hu pagecaller
        git checkout c879bb3e3a54d1e18415030a68f327dc4cf17363
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

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

All warnings (new ones prefixed by >>):

   mm/page_alloc.c: In function 'pagecaller_get':
>> mm/page_alloc.c:193:33: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
     193 | #define PAGECALLER_RESERVED     0xffffffffffffffff
         |                                 ^~~~~~~~~~~~~~~~~~
   mm/page_alloc.c:939:24: note: in expansion of macro 'PAGECALLER_RESERVED'
     939 |                 return PAGECALLER_RESERVED;
         |                        ^~~~~~~~~~~~~~~~~~~
>> mm/page_alloc.c:193:33: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
     193 | #define PAGECALLER_RESERVED     0xffffffffffffffff
         |                                 ^~~~~~~~~~~~~~~~~~
   mm/page_alloc.c:944:16: note: in expansion of macro 'PAGECALLER_RESERVED'
     944 |         return PAGECALLER_RESERVED;
         |                ^~~~~~~~~~~~~~~~~~~
   mm/page_alloc.c: In function 'free_area_init_node':
>> mm/page_alloc.c:193:33: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
     193 | #define PAGECALLER_RESERVED     0xffffffffffffffff
         |                                 ^~~~~~~~~~~~~~~~~~
   mm/page_alloc.c:7798:56: note: in expansion of macro 'PAGECALLER_RESERVED'
    7798 |                 pagecaller_set(0, end_pfn - start_pfn, PAGECALLER_RESERVED);
         |                                                        ^~~~~~~~~~~~~~~~~~~


vim +193 mm/page_alloc.c

   190	
   191	#ifdef CONFIG_PAGECALLER
   192	#define PAGECALLER_FREE		0
 > 193	#define PAGECALLER_RESERVED	0xffffffffffffffff
   194	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp