From: kernel test robot <lkp@intel.com>
To: Huang Ying <ying.huang@intel.com>
Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>
Subject: include/linux/minmax.h:93:30: warning: large integer implicitly truncated to unsigned type
Date: Thu, 20 Mar 2025 12:16:57 +0800 [thread overview]
Message-ID: <202503201231.VrUIFcq2-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: a7f2e10ecd8f18b83951b0bab47ddaf48f93bf47
commit: 99185c10d5d9214d0d0c8b7866660203e344ee3b resource, kunit: add test case for region_intersects()
date: 6 months ago
config: arm-randconfig-r063-20250320 (https://download.01.org/0day-ci/archive/20250320/202503201231.VrUIFcq2-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250320/202503201231.VrUIFcq2-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503201231.VrUIFcq2-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/linux/ioport.h:15:0,
from kernel/resource.c:15:
kernel/resource.c: In function 'gfr_start':
>> include/linux/minmax.h:93:30: warning: large integer implicitly truncated to unsigned type [-Woverflow]
({ type ux = (x); type uy = (y); __cmp(op, ux, uy); })
^
include/linux/minmax.h:96:2: note: in expansion of macro '__cmp_once_unique'
__cmp_once_unique(op, type, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
^~~~~~~~~~~~~~~~~
include/linux/minmax.h:213:27: note: in expansion of macro '__cmp_once'
#define min_t(type, x, y) __cmp_once(min, type, x, y)
^~~~~~~~~~
kernel/resource.c:1838:9: note: in expansion of macro 'min_t'
end = min_t(resource_size_t, base->end, MAX_PHYS_ADDR);
^~~~~
kernel/resource.c: In function 'gfr_continue':
>> include/linux/minmax.h:93:30: warning: large integer implicitly truncated to unsigned type [-Woverflow]
({ type ux = (x); type uy = (y); __cmp(op, ux, uy); })
^
include/linux/minmax.h:96:2: note: in expansion of macro '__cmp_once_unique'
__cmp_once_unique(op, type, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
^~~~~~~~~~~~~~~~~
include/linux/minmax.h:213:27: note: in expansion of macro '__cmp_once'
#define min_t(type, x, y) __cmp_once(min, type, x, y)
^~~~~~~~~~
kernel/resource.c:1855:11: note: in expansion of macro 'min_t'
addr <= min_t(resource_size_t, base->end, MAX_PHYS_ADDR);
^~~~~
vim +93 include/linux/minmax.h
d03eba99f5bf7c David Laight 2023-09-18 91
017fa3e8918784 Linus Torvalds 2024-07-28 92 #define __cmp_once_unique(op, type, x, y, ux, uy) \
017fa3e8918784 Linus Torvalds 2024-07-28 @93 ({ type ux = (x); type uy = (y); __cmp(op, ux, uy); })
017fa3e8918784 Linus Torvalds 2024-07-28 94
:::::: The code at line 93 was first introduced by commit
:::::: 017fa3e89187848fd056af757769c9e66ac3e93d minmax: simplify and clarify min_t()/max_t() implementation
:::::: TO: Linus Torvalds <torvalds@linux-foundation.org>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2025-03-20 4:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-20 4:16 kernel test robot [this message]
2025-03-21 21:58 ` David Laight
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