Re: [PATCH 13/13] security/integrity/ima: converts stats to seqnum_ops

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Hi Shuah,

I love your patch! Perhaps something to improve:

[auto build test WARNING on staging/staging-testing]
[also build test WARNING on integrity/next-integrity char-misc/char-misc-testing usb/usb-testing linus/master v5.10-rc3 next-20201110]
[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]

url:    https://github.com/0day-ci/linux/commits/Shuah-Khan/Introduce-seqnum_ops/20201111-035753
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git f4acd33c446b2ba97f1552a4da90050109d01ca7
config: sh-allmodconfig (attached as .config)
compiler: sh4-linux-gcc (GCC) 9.3.0
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://github.com/0day-ci/linux/commit/4124aef613b0e30b7da08aaec750983854e1ca5a
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Shuah-Khan/Introduce-seqnum_ops/20201111-035753
        git checkout 4124aef613b0e30b7da08aaec750983854e1ca5a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh 

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

All warnings (new ones prefixed by >>):

   In file included from security/integrity/ima/ima_fs.c:25:
   security/integrity/ima/ima.h:178:18: error: field 'len' has incomplete type
     178 |  struct seqnum64 len; /* number of stored measurements in the list */
         |                  ^~~
   security/integrity/ima/ima.h:179:18: error: field 'violations' has incomplete type
     179 |  struct seqnum64 violations;
         |                  ^~~~~~~~~~
   security/integrity/ima/ima_fs.c: In function 'ima_show_htable_value':
   security/integrity/ima/ima_fs.c:47:52: error: implicit declaration of function 'seqnum64_read'; did you mean 'seqnum32_read'? [-Werror=implicit-function-declaration]
      47 |  len = scnprintf(tmpbuf, sizeof(tmpbuf), "%lli\n", seqnum64_read(val));
         |                                                    ^~~~~~~~~~~~~
         |                                                    seqnum32_read
>> security/integrity/ima/ima_fs.c:47:46: warning: format '%lli' expects argument of type 'long long int', but argument 4 has type 'int' [-Wformat=]
      47 |  len = scnprintf(tmpbuf, sizeof(tmpbuf), "%lli\n", seqnum64_read(val));
         |                                           ~~~^     ~~~~~~~~~~~~~~~~~~
         |                                              |     |
         |                                              |     int
         |                                              long long int
         |                                           %i
   security/integrity/ima/ima_fs.c: In function 'ima_show_htable_violations':
   security/integrity/ima/ima_fs.c:56:1: error: control reaches end of non-void function [-Werror=return-type]
      56 | }
         | ^
   security/integrity/ima/ima_fs.c: In function 'ima_show_measurements_count':
   security/integrity/ima/ima_fs.c:69:1: error: control reaches end of non-void function [-Werror=return-type]
      69 | }
         | ^
   cc1: some warnings being treated as errors

vim +47 security/integrity/ima/ima_fs.c

    40	
    41	static ssize_t ima_show_htable_value(char __user *buf, size_t count,
    42					     loff_t *ppos, struct seqnum64 *val)
    43	{
    44		char tmpbuf[32];	/* greater than largest 'long' string value */
    45		ssize_t len;
    46	
  > 47		len = scnprintf(tmpbuf, sizeof(tmpbuf), "%lli\n", seqnum64_read(val));
    48		return simple_read_from_buffer(buf, count, ppos, tmpbuf, len);
    49	}
    50	

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

Attachment: .config.gz
Description: application/gzip


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