linux-kernel - [hare-scsi-devel:tls-upcall.v4 155/156] lib/iov_iter.c:1782:46: sparse: sparse: incorrect type in argument 2 (different address spaces)

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]

Date:   Sun, 13 Mar 2022 22:45:36 +0800
From:   kernel test robot <lkp@...el.com>
To:     Hannes Reinecke <hare@...e.de>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [hare-scsi-devel:tls-upcall.v4 155/156] lib/iov_iter.c:1782:46:
 sparse: sparse: incorrect type in argument 2 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git tls-upcall.v4
head:   d2416ecdb6b03fc2e4aa40b20cdf919322713224
commit: 921f6399790df513118d6c1aa829d4e9fab5131c [155/156] lib/iov_iter: add hash_iov_iter()
config: microblaze-randconfig-s032-20220313 (https://download.01.org/0day-ci/archive/20220313/202203132257.6GlVo2BL-lkp@intel.com/config)
compiler: microblaze-linux-gcc (GCC) 11.2.0
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: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git/commit/?id=921f6399790df513118d6c1aa829d4e9fab5131c
        git remote add hare-scsi-devel https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git
        git fetch --no-tags hare-scsi-devel tls-upcall.v4
        git checkout 921f6399790df513118d6c1aa829d4e9fab5131c
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=microblaze SHELL=/bin/bash

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


sparse warnings: (new ones prefixed by >>)
>> lib/iov_iter.c:1782:46: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const * @@     got void [noderef] __user * @@
   lib/iov_iter.c:1782:46: sparse:     expected void const *
   lib/iov_iter.c:1782:46: sparse:     got void [noderef] __user *
   lib/iov_iter.c: note: in included file:
   include/net/checksum.h:31:39: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected restricted __wsum [usertype] sum @@     got unsigned int @@
   include/net/checksum.h:31:39: sparse:     expected restricted __wsum [usertype] sum
   include/net/checksum.h:31:39: sparse:     got unsigned int
   include/net/checksum.h:39:45: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected restricted __wsum [usertype] sum @@     got unsigned int @@
   include/net/checksum.h:39:45: sparse:     expected restricted __wsum [usertype] sum
   include/net/checksum.h:39:45: sparse:     got unsigned int

vim +1782 lib/iov_iter.c

  1767	
  1768	size_t hash_iov_iter(void *hashp, const struct iov_iter *i)
  1769	{
  1770	#ifdef CONFIG_CRYPTO_HASH
  1771		struct ahash_request *hash = hashp;
  1772		size_t skip = i->iov_offset, size = i->count;
  1773		const struct iovec *p;
  1774	
  1775		for (p = i->iov; size; skip = 0, p++) {
  1776			struct scatterlist sg;
  1777			unsigned offs = offset_in_page(p->iov_base + skip);
  1778			size_t len = min(p->iov_len - skip, size);
  1779	
  1780			if (!len)
  1781				continue;
> 1782			sg_init_one(&sg, p->iov_base + offs, len);
  1783			ahash_request_set_crypt(hash, &sg, NULL, len);
  1784			crypto_ahash_update(hash);
  1785			size -= len;
  1786		}
  1787		return i->count;
  1788	#else
  1789		return 0;
  1790	#endif
  1791	}
  1792	EXPORT_SYMBOL(hash_iov_iter);
  1793	

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