[hch-misc:quota-compat 4/4] fs/quota/quota.c:295:21: sparse: sparse: incorrect type in initializer (different address spaces)

[hch-misc:quota-compat 4/4] fs/quota/quota.c:295:21: sparse: sparse: incorrect type in initializer (different address spaces)

[kernel test robot]

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tree:   git://git.infradead.org/users/hch/misc.git quota-compat
head:   7869dc95f0b4f7deb84d8d9ef6e216e48ef1d08d
commit: 7869dc95f0b4f7deb84d8d9ef6e216e48ef1d08d [4/4] quota: simplify the quotactl compat handling
config: sh-randconfig-s031-20200724 (attached as .config)
compiler: sh4-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.2-93-g4c6cbe55-dirty
        git checkout 7869dc95f0b4f7deb84d8d9ef6e216e48ef1d08d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=sh 

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


sparse warnings: (new ones prefixed by >>)

>> fs/quota/quota.c:295:21: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected unsigned int const *__gu_addr @@     got unsigned int [noderef] __user * @@
>> fs/quota/quota.c:295:21: sparse:     expected unsigned int const *__gu_addr
>> fs/quota/quota.c:295:21: sparse:     got unsigned int [noderef] __user *
>> fs/quota/quota.c:295:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __user * @@     got unsigned int const *__gu_addr @@
>> fs/quota/quota.c:295:21: sparse:     expected void const volatile [noderef] __user *
>> fs/quota/quota.c:295:21: sparse:     got unsigned int const *__gu_addr

vim +295 fs/quota/quota.c

   283	
   284	static int quota_setquota(struct super_block *sb, int type, qid_t id,
   285				  void __user *addr)
   286	{
   287		struct qc_dqblk fdq;
   288		struct if_dqblk idq;
   289		struct kqid qid;
   290	
   291		if (compat_need_64bit_alignment_fixup()) {
   292			struct compat_if_dqblk __user *compat_dqblk = addr;
   293	
   294			if (copy_from_user(&idq, compat_dqblk, sizeof(*compat_dqblk)) ||
 > 295			    get_user(idq.dqb_valid, &compat_dqblk->dqb_valid))
   296				return -EFAULT;
   297		} else {
   298			if (copy_from_user(&idq, addr, sizeof(idq)))
   299				return -EFAULT;
   300		}
   301		if (!sb->s_qcop->set_dqblk)
   302			return -ENOSYS;
   303		qid = make_kqid(current_user_ns(), type, id);
   304		if (!qid_has_mapping(sb->s_user_ns, qid))
   305			return -EINVAL;
   306		copy_from_if_dqblk(&fdq, &idq);
   307		return sb->s_qcop->set_dqblk(sb, qid, &fdq);
   308	}
   309	

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

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