From: kernel test robot <lkp@intel.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org
Subject: [kas:lam 6/10] drivers/char/ipmi/ipmi_watchdog.c:776:37: sparse: sparse: incorrect type in initializer (different address spaces)
Date: Fri, 29 Apr 2022 07:14:24 +0800 [thread overview]
Message-ID: <202204290719.Ro26lojw-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git lam
head: 956305b67dd062e5a58c68c871dee2ee1d579feb
commit: 2d7493c0421d267a906653b33aca69bf87f0595f [6/10] x86/uaccess: Remove tags from the address before checking
config: x86_64-randconfig-s022 (https://download.01.org/0day-ci/archive/20220429/202204290719.Ro26lojw-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git/commit/?id=2d7493c0421d267a906653b33aca69bf87f0595f
git remote add kas https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git
git fetch --no-tags kas lam
git checkout 2d7493c0421d267a906653b33aca69bf87f0595f
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash
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/char/ipmi/ipmi_watchdog.c:776:37: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected char const [noderef] __user *__ptr_clean @@ got char const * @@
drivers/char/ipmi/ipmi_watchdog.c:776:37: sparse: expected char const [noderef] __user *__ptr_clean
drivers/char/ipmi/ipmi_watchdog.c:776:37: sparse: got char const *
vim +776 drivers/char/ipmi/ipmi_watchdog.c
55929332c92e5d3 Arnd Bergmann 2010-04-27 758
^1da177e4c3f415 Linus Torvalds 2005-04-16 759 static ssize_t ipmi_write(struct file *file,
^1da177e4c3f415 Linus Torvalds 2005-04-16 760 const char __user *buf,
^1da177e4c3f415 Linus Torvalds 2005-04-16 761 size_t len,
^1da177e4c3f415 Linus Torvalds 2005-04-16 762 loff_t *ppos)
^1da177e4c3f415 Linus Torvalds 2005-04-16 763 {
^1da177e4c3f415 Linus Torvalds 2005-04-16 764 int rv;
^1da177e4c3f415 Linus Torvalds 2005-04-16 765
^1da177e4c3f415 Linus Torvalds 2005-04-16 766 if (len) {
^1da177e4c3f415 Linus Torvalds 2005-04-16 767 if (!nowayout) {
^1da177e4c3f415 Linus Torvalds 2005-04-16 768 size_t i;
^1da177e4c3f415 Linus Torvalds 2005-04-16 769
^1da177e4c3f415 Linus Torvalds 2005-04-16 770 /* In case it was set long ago */
^1da177e4c3f415 Linus Torvalds 2005-04-16 771 expect_close = 0;
^1da177e4c3f415 Linus Torvalds 2005-04-16 772
^1da177e4c3f415 Linus Torvalds 2005-04-16 773 for (i = 0; i != len; i++) {
^1da177e4c3f415 Linus Torvalds 2005-04-16 774 char c;
^1da177e4c3f415 Linus Torvalds 2005-04-16 775
^1da177e4c3f415 Linus Torvalds 2005-04-16 @776 if (get_user(c, buf + i))
^1da177e4c3f415 Linus Torvalds 2005-04-16 777 return -EFAULT;
^1da177e4c3f415 Linus Torvalds 2005-04-16 778 if (c == 'V')
^1da177e4c3f415 Linus Torvalds 2005-04-16 779 expect_close = 42;
^1da177e4c3f415 Linus Torvalds 2005-04-16 780 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 781 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 782 rv = ipmi_heartbeat();
^1da177e4c3f415 Linus Torvalds 2005-04-16 783 if (rv)
^1da177e4c3f415 Linus Torvalds 2005-04-16 784 return rv;
^1da177e4c3f415 Linus Torvalds 2005-04-16 785 }
3976df9b04c113a Mark Rustad 2008-07-10 786 return len;
^1da177e4c3f415 Linus Torvalds 2005-04-16 787 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 788
:::::: The code at line 776 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
reply other threads:[~2022-04-28 23:14 UTC|newest]
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