linux-kernel - [dhowells-fs:fscache-iter 35/55] fs/cachefiles/io.c:371:27: warning: variable 'cache' set but not used

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: <202108011648.WPYz1TKV-lkp@intel.com>
Date:   Sun, 1 Aug 2021 16:52:51 +0800
From:   kernel test robot <lkp@...el.com>
To:     David Howells <dhowells@...hat.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [dhowells-fs:fscache-iter 35/55] fs/cachefiles/io.c:371:27: warning:
 variable 'cache' set but not used

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git fscache-iter
head:   47585048b7ec10d66ca6c102b468b9b362910475
commit: c560d97274dfacbe0101a06240a1d22fb0763fa1 [35/55] cachefiles: Implement read and write parts of new I/O API
config: arc-buildonly-randconfig-r006-20210801 (attached as .config)
compiler: arceb-elf-gcc (GCC) 10.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit/?id=c560d97274dfacbe0101a06240a1d22fb0763fa1
        git remote add dhowells-fs https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git
        git fetch --no-tags dhowells-fs fscache-iter
        git checkout c560d97274dfacbe0101a06240a1d22fb0763fa1
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arc 

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

All warnings (new ones prefixed by >>):

   fs/cachefiles/io.c: In function 'cachefiles_begin_operation':
>> fs/cachefiles/io.c:371:27: warning: variable 'cache' set but not used [-Wunused-but-set-variable]
     371 |  struct cachefiles_cache *cache;
         |                           ^~~~~


vim +/cache +371 fs/cachefiles/io.c

61ea886d763ce80 David Howells 2020-02-06  364  
26aaeffcafe6cbb David Howells 2021-02-22  365  /*
26aaeffcafe6cbb David Howells 2021-02-22  366   * Open the cache file when beginning a cache operation.
26aaeffcafe6cbb David Howells 2021-02-22  367   */
e3f113683fd3fd8 David Howells 2020-02-06  368  int cachefiles_begin_operation(struct netfs_cache_resources *cres)
26aaeffcafe6cbb David Howells 2021-02-22  369  {
e3f113683fd3fd8 David Howells 2020-02-06  370  	struct cachefiles_object *object = cachefiles_cres_object(cres);
26aaeffcafe6cbb David Howells 2021-02-22 @371  	struct cachefiles_cache *cache;
c560d97274dfacb David Howells 2020-02-06  372  	//struct path path;
26aaeffcafe6cbb David Howells 2021-02-22  373  	struct file *file;
26aaeffcafe6cbb David Howells 2021-02-22  374  
26aaeffcafe6cbb David Howells 2021-02-22  375  	_enter("");
26aaeffcafe6cbb David Howells 2021-02-22  376  
26aaeffcafe6cbb David Howells 2021-02-22  377  	cache = container_of(object->fscache.cache,
26aaeffcafe6cbb David Howells 2021-02-22  378  			     struct cachefiles_cache, cache);
26aaeffcafe6cbb David Howells 2021-02-22  379  

:::::: The code at line 371 was first introduced by commit
:::::: 26aaeffcafe6cbb7c3978fa6ed7555122f8c9f8c fscache, cachefiles: Add alternate API to use kiocb for read/write to cache

:::::: TO: David Howells <dhowells@...hat.com>
:::::: CC: David Howells <dhowells@...hat.com>

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

Download attachment ".config.gz" of type "application/gzip" (28556 bytes)