fs/smb/client/ioctl.c:324:10: warning: variable 'caps' set but not used

From: kernel test robot
Date: Sat May 27 2023 - 02:22:49 EST

Hi Steve,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 49572d5361298711207ab387a6c318407deb963a
commit: 38c8a9a52082579090e34c033d439ed2cd1a462d smb: move client and server files to common directory fs/smb
date: 2 days ago
config: i386-randconfig-i054-20230527 (https://download.01.org/0day-ci/archive/20230527/202305271421.pwX0wfIT-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
mkdir -p ~/bin
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/torvalds/linux.git/commit/?id=38c8a9a52082579090e34c033d439ed2cd1a462d
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 38c8a9a52082579090e34c033d439ed2cd1a462d
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=i386 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash fs/smb/client/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305271421.pwX0wfIT-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> fs/smb/client/ioctl.c:324:10: warning: variable 'caps' set but not used [-Wunused-but-set-variable]
__u64 caps;
1 warning generated.

vim +/caps +324 fs/smb/client/ioctl.c

7ba3d1cdb7988c fs/cifs/ioctl.c Steve French 2021-05-02 312
f9ddcca4cf7d95 fs/cifs/ioctl.c Steve French 2008-05-15 313 long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
^1da177e4c3f41 fs/cifs/ioctl.c Linus Torvalds 2005-04-16 314 {
496ad9aa8ef448 fs/cifs/ioctl.c Al Viro 2013-01-23 315 struct inode *inode = file_inode(filep);
7e7db86c7e1088 fs/cifs/ioctl.c Steve French 2019-09-19 316 struct smb3_key_debug_info pkey_inf;
^1da177e4c3f41 fs/cifs/ioctl.c Linus Torvalds 2005-04-16 317 int rc = -ENOTTY; /* strange error - but the precedent */
6d5786a34d98bf fs/cifs/ioctl.c Pavel Shilovsky 2012-06-20 318 unsigned int xid;
ba00ba64cf0895 fs/cifs/ioctl.c Jeff Layton 2010-09-20 319 struct cifsFileInfo *pSMBFile = filep->private_data;
96daf2b09178d8 fs/cifs/ioctl.c Steve French 2011-05-27 320 struct cifs_tcon *tcon;
a77592a70081ed fs/cifs/ioctl.c Ronnie Sahlberg 2020-07-09 321 struct tcon_link *tlink;
d26c2ddd335696 fs/cifs/ioctl.c Steve French 2020-02-06 322 struct cifs_sb_info *cifs_sb;
f654bac2227adc fs/cifs/ioctl.c Steve French 2005-04-28 323 __u64 ExtAttrBits = 0;
618763958b2291 fs/cifs/ioctl.c Jeff Layton 2010-11-08 @324 __u64 caps;

:::::: The code at line 324 was first introduced by commit
:::::: 618763958b2291a09057dbfa553da6ded93dcfad cifs: make cifs_ioctl handle NULL filp->private_data correctly

:::::: TO: Jeff Layton <jlayton@xxxxxxxxxx>
:::::: CC: Steve French <sfrench@xxxxxxxxxx>

0-DAY CI Kernel Test Service