[cifs:for-next 1/1] fs/smbfs/ioctl.c:324:10: warning: variable 'caps' set but not used

From: kernel test robot <lkp@intel.com>
To: Steve French <stfrench@microsoft.com>
Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org,
	linux-cifs@vger.kernel.org, samba-technical@lists.samba.org
Subject: [cifs:for-next 1/1] fs/smbfs/ioctl.c:324:10: warning: variable 'caps' set but not used
Date: Mon, 13 Sep 2021 17:10:42 +0800	[thread overview]
Message-ID: <202109131721.EnzYJS4k-lkp@intel.com> (raw)

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Hi Steve,

First bad commit (maybe != root cause):

tree:   git://git.samba.org/sfrench/cifs-2.6.git for-next
head:   bba805a46c91e7a8a1d04704e5409f890acf8b66
commit: bba805a46c91e7a8a1d04704e5409f890acf8b66 [1/1] cifs: rename fs/cifs directory to fs/smbfs
config: hexagon-randconfig-r045-20210913 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 261cbe98c38f8c1ee1a482fe76511110e790f58a)
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
        git remote add cifs git://git.samba.org/sfrench/cifs-2.6.git
        git fetch --no-tags cifs for-next
        git checkout bba805a46c91e7a8a1d04704e5409f890acf8b66
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=hexagon 

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

All warnings (new ones prefixed by >>):

>> fs/smbfs/ioctl.c:324:10: warning: variable 'caps' set but not used [-Wunused-but-set-variable]
           __u64   caps;
                   ^
   1 warning generated.
--
>> fs/smbfs/connect.c:1093: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * Returns true if srcaddr isn't specified and rhs isn't specified, or
   fs/smbfs/connect.c:1558: warning: Function parameter or member 'ses' not described in 'cifs_setup_ipc'
   fs/smbfs/connect.c:1558: warning: Function parameter or member 'ctx' not described in 'cifs_setup_ipc'
   fs/smbfs/connect.c:1618: warning: Function parameter or member 'ses' not described in 'cifs_free_ipc'
   fs/smbfs/connect.c:1864: warning: Function parameter or member 'server' not described in 'cifs_get_smb_ses'
   fs/smbfs/connect.c:1864: warning: Function parameter or member 'ctx' not described in 'cifs_get_smb_ses'
   fs/smbfs/connect.c:2087: warning: Function parameter or member 'ses' not described in 'cifs_get_tcon'
   fs/smbfs/connect.c:2087: warning: Function parameter or member 'ctx' not described in 'cifs_get_tcon'
   fs/smbfs/connect.c:3046: warning: Function parameter or member 'xid' not described in 'expand_dfs_referral'
   fs/smbfs/connect.c:3046: warning: Function parameter or member 'ses' not described in 'expand_dfs_referral'
   fs/smbfs/connect.c:3046: warning: Function parameter or member 'ctx' not described in 'expand_dfs_referral'
   fs/smbfs/connect.c:3046: warning: Function parameter or member 'cifs_sb' not described in 'expand_dfs_referral'
   fs/smbfs/connect.c:3046: warning: Function parameter or member 'ref_path' not described in 'expand_dfs_referral'

vim +/caps +324 fs/smbfs/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@redhat.com>
:::::: CC: Steve French <sfrench@us.ibm.com>

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

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