linux-kernel - Re: [PATCH] iouring:added boundary value check for io_uring

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Message-ID: <202401202013.dEvDNaAX-lkp@intel.com>
Date: Sat, 20 Jan 2024 20:13:46 +0800
From: kernel test robot <lkp@...el.com>
To: Subramanya Swamy <subramanya.swamy.linux@...il.com>, corbet@....net,
	axboe@...nel.dk, asml.silence@...il.com, ribalda@...omium.org,
	rostedt@...dmis.org, bhe@...hat.com, akpm@...ux-foundation.org,
	matteorizzo@...gle.com, ardb@...nel.org, alexghiti@...osinc.com,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	io-uring@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev
Subject: Re: [PATCH] iouring:added boundary value check for io_uring_group
 systl

Hi Subramanya,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linus/master v6.7 next-20240119]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Subramanya-Swamy/iouring-added-boundary-value-check-for-io_uring_group-systl/20240115-205112
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20240115124925.1735-1-subramanya.swamy.linux%40gmail.com
patch subject: [PATCH] iouring:added boundary value check for io_uring_group systl
config: i386-buildonly-randconfig-002-20240116 (https://download.01.org/0day-ci/archive/20240120/202401202013.dEvDNaAX-lkp@intel.com/config)
compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240120/202401202013.dEvDNaAX-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401202013.dEvDNaAX-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> io_uring/io_uring.c:157:21: warning: unused variable 'min_gid' [-Wunused-variable]
     157 | static unsigned int min_gid;
         |                     ^~~~~~~
>> io_uring/io_uring.c:158:21: warning: unused variable 'max_gid' [-Wunused-variable]
     158 | static unsigned int max_gid  = 4294967294;  /*4294967294 is the max guid*/
         |                     ^~~~~~~
   2 warnings generated.


vim +/min_gid +157 io_uring/io_uring.c

   154	
   155	static int __read_mostly sysctl_io_uring_disabled;
   156	static unsigned int __read_mostly sysctl_io_uring_group;
 > 157	static unsigned int min_gid;
 > 158	static unsigned int max_gid  = 4294967294;  /*4294967294 is the max guid*/
   159	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki