From: kernel test robot <lkp@intel.com>
To: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
Michael Ellerman <mpe@ellerman.id.au>
Subject: drivers/w1/slaves/w1_ds28e04.c:342:13: sparse: sparse: incorrect type in initializer (different address spaces)
Date: Fri, 19 Nov 2021 05:30:37 +0800 [thread overview]
Message-ID: <202111190526.K5vb7NWC-lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 42eb8fdac2fc5d62392dcfcf0253753e821a97b0
commit: e72fcdb26cde72985c418b39f72ecaa222e1f4d5 powerpc/uaccess: Refactor get/put_user() and __get/put_user()
date: 8 months ago
config: powerpc64-randconfig-s032-20211118 (attached as .config)
compiler: powerpc64-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/torvalds/linux.git/commit/?id=e72fcdb26cde72985c418b39f72ecaa222e1f4d5
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e72fcdb26cde72985c418b39f72ecaa222e1f4d5
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=powerpc64
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 >>)
>> drivers/w1/slaves/w1_ds28e04.c:342:13: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected char [noderef] __user *_pu_addr @@ got char *buf @@
drivers/w1/slaves/w1_ds28e04.c:342:13: sparse: expected char [noderef] __user *_pu_addr
drivers/w1/slaves/w1_ds28e04.c:342:13: sparse: got char *buf
>> drivers/w1/slaves/w1_ds28e04.c:356:13: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected char const [noderef] __user *_gu_addr @@ got char const *buf @@
drivers/w1/slaves/w1_ds28e04.c:356:13: sparse: expected char const [noderef] __user *_gu_addr
drivers/w1/slaves/w1_ds28e04.c:356:13: sparse: got char const *buf
vim +342 drivers/w1/slaves/w1_ds28e04.c
fa33a65a9cf7e2 Greg Kroah-Hartman 2013-08-21 338
fa33a65a9cf7e2 Greg Kroah-Hartman 2013-08-21 339 static ssize_t crccheck_show(struct device *dev, struct device_attribute *attr,
fa33a65a9cf7e2 Greg Kroah-Hartman 2013-08-21 340 char *buf)
fbf7f7b4e2ae40 Markus Franke 2012-05-26 341 {
fbf7f7b4e2ae40 Markus Franke 2012-05-26 @342 if (put_user(w1_enable_crccheck + 0x30, buf))
fbf7f7b4e2ae40 Markus Franke 2012-05-26 343 return -EFAULT;
fbf7f7b4e2ae40 Markus Franke 2012-05-26 344
fbf7f7b4e2ae40 Markus Franke 2012-05-26 345 return sizeof(w1_enable_crccheck);
fbf7f7b4e2ae40 Markus Franke 2012-05-26 346 }
fbf7f7b4e2ae40 Markus Franke 2012-05-26 347
fa33a65a9cf7e2 Greg Kroah-Hartman 2013-08-21 348 static ssize_t crccheck_store(struct device *dev, struct device_attribute *attr,
fbf7f7b4e2ae40 Markus Franke 2012-05-26 349 const char *buf, size_t count)
fbf7f7b4e2ae40 Markus Franke 2012-05-26 350 {
fbf7f7b4e2ae40 Markus Franke 2012-05-26 351 char val;
fbf7f7b4e2ae40 Markus Franke 2012-05-26 352
fbf7f7b4e2ae40 Markus Franke 2012-05-26 353 if (count != 1 || !buf)
fbf7f7b4e2ae40 Markus Franke 2012-05-26 354 return -EINVAL;
fbf7f7b4e2ae40 Markus Franke 2012-05-26 355
fbf7f7b4e2ae40 Markus Franke 2012-05-26 @356 if (get_user(val, buf))
fbf7f7b4e2ae40 Markus Franke 2012-05-26 357 return -EFAULT;
fbf7f7b4e2ae40 Markus Franke 2012-05-26 358
fbf7f7b4e2ae40 Markus Franke 2012-05-26 359 /* convert to decimal */
fbf7f7b4e2ae40 Markus Franke 2012-05-26 360 val = val - 0x30;
fbf7f7b4e2ae40 Markus Franke 2012-05-26 361 if (val != 0 && val != 1)
fbf7f7b4e2ae40 Markus Franke 2012-05-26 362 return -EINVAL;
fbf7f7b4e2ae40 Markus Franke 2012-05-26 363
fbf7f7b4e2ae40 Markus Franke 2012-05-26 364 /* set the new value */
fbf7f7b4e2ae40 Markus Franke 2012-05-26 365 w1_enable_crccheck = val;
fbf7f7b4e2ae40 Markus Franke 2012-05-26 366
fbf7f7b4e2ae40 Markus Franke 2012-05-26 367 return sizeof(w1_enable_crccheck);
fbf7f7b4e2ae40 Markus Franke 2012-05-26 368 }
fbf7f7b4e2ae40 Markus Franke 2012-05-26 369
:::::: The code at line 342 was first introduced by commit
:::::: fbf7f7b4e2ae40f790828c86d31beff2d49e9ac8 w1: Add 1-wire slave device driver for DS28E04-100
:::::: TO: Markus Franke <franm@hrz.tu-chemnitz.de>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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