[hch-misc:set_fs-removal 14/14] include/linux/regset.h:323:7: error: result of comparison of constant 70368744177664 with expression of type 'unsigned int' is always true

[hch-misc:set_fs-removal 14/14] include/linux/regset.h:323:7: error: result of comparison of constant 70368744177664 with expression of type 'unsigned int' is always true

[kernel test robot]

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tree:   git://git.infradead.org/users/hch/misc.git set_fs-removal
head:   916d3a255939d055cd4cbe1953f4a195f6aa3b0d
commit: 916d3a255939d055cd4cbe1953f4a195f6aa3b0d [14/14] powerpc: remove address space overrides using set_fs()
config: powerpc64-randconfig-r032-20200902 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 1284dc34abd11ce4275ad21c0470ad8c679b59b7)
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
        # install powerpc64 cross compiling tool for clang build
        # apt-get install binutils-powerpc64-linux-gnu
        git checkout 916d3a255939d055cd4cbe1953f4a195f6aa3b0d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 

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

All errors (new ones prefixed by >>):

   In file included from arch/powerpc/kernel/ptrace/ptrace.c:18:
>> include/linux/regset.h:323:7: error: result of comparison of constant 70368744177664 with expression of type 'unsigned int' is always true [-Werror,-Wtautological-constant-out-of-range-compare]
           if (!access_ok(data, size))
                ^~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/uaccess.h:35:3: note: expanded from macro 'access_ok'
            __access_ok((unsigned long)(addr), (size)))
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/uaccess.h:20:32: note: expanded from macro '__access_ok'
           (addr < TASK_SIZE_MAX && size < TASK_SIZE_MAX)
                                    ~~~~ ^ ~~~~~~~~~~~~~
   1 error generated.

git remote add hch-misc git://git.infradead.org/users/hch/misc.git
git fetch --no-tags hch-misc set_fs-removal
git checkout 916d3a255939d055cd4cbe1953f4a195f6aa3b0d
vim +323 include/linux/regset.h

bae3f7c39dee59 Roland McGrath 2008-01-30  288  
b4e9c9549f6232 Al Viro        2020-06-01  289  extern int regset_get(struct task_struct *target,
b4e9c9549f6232 Al Viro        2020-06-01  290  		      const struct user_regset *regset,
b4e9c9549f6232 Al Viro        2020-06-01  291  		      unsigned int size, void *data);
b4e9c9549f6232 Al Viro        2020-06-01  292  
b4e9c9549f6232 Al Viro        2020-06-01  293  extern int regset_get_alloc(struct task_struct *target,
b4e9c9549f6232 Al Viro        2020-06-01  294  			    const struct user_regset *regset,
b4e9c9549f6232 Al Viro        2020-06-01  295  			    unsigned int size,
b4e9c9549f6232 Al Viro        2020-06-01  296  			    void **data);
b4e9c9549f6232 Al Viro        2020-06-01  297  
dc12d7968f9c95 Al Viro        2020-02-17  298  extern int copy_regset_to_user(struct task_struct *target,
5bde4d181793be Roland McGrath 2008-01-30  299  			       const struct user_regset_view *view,
dc12d7968f9c95 Al Viro        2020-02-17  300  			       unsigned int setno, unsigned int offset,
dc12d7968f9c95 Al Viro        2020-02-17  301  			       unsigned int size, void __user *data);
5bde4d181793be Roland McGrath 2008-01-30  302  
5bde4d181793be Roland McGrath 2008-01-30  303  /**
5bde4d181793be Roland McGrath 2008-01-30  304   * copy_regset_from_user - store into thread's user_regset data from user memory
5bde4d181793be Roland McGrath 2008-01-30  305   * @target:	thread to be examined
5bde4d181793be Roland McGrath 2008-01-30  306   * @view:	&struct user_regset_view describing user thread machine state
5bde4d181793be Roland McGrath 2008-01-30  307   * @setno:	index in @view->regsets
5bde4d181793be Roland McGrath 2008-01-30  308   * @offset:	offset into the regset data, in bytes
5bde4d181793be Roland McGrath 2008-01-30  309   * @size:	amount of data to copy, in bytes
5bde4d181793be Roland McGrath 2008-01-30  310   * @data:	user-mode pointer to copy from
5bde4d181793be Roland McGrath 2008-01-30  311   */
5bde4d181793be Roland McGrath 2008-01-30  312  static inline int copy_regset_from_user(struct task_struct *target,
5bde4d181793be Roland McGrath 2008-01-30  313  					const struct user_regset_view *view,
5bde4d181793be Roland McGrath 2008-01-30  314  					unsigned int setno,
5bde4d181793be Roland McGrath 2008-01-30  315  					unsigned int offset, unsigned int size,
5bde4d181793be Roland McGrath 2008-01-30  316  					const void __user *data)
5bde4d181793be Roland McGrath 2008-01-30  317  {
5bde4d181793be Roland McGrath 2008-01-30  318  	const struct user_regset *regset = &view->regsets[setno];
5bde4d181793be Roland McGrath 2008-01-30  319  
c8e252586f8d5d H. Peter Anvin 2012-03-02  320  	if (!regset->set)
c8e252586f8d5d H. Peter Anvin 2012-03-02  321  		return -EOPNOTSUPP;
c8e252586f8d5d H. Peter Anvin 2012-03-02  322  
96d4f267e40f95 Linus Torvalds 2019-01-03 @323  	if (!access_ok(data, size))
5189fa19a4b2b4 H. Peter Anvin 2012-03-02  324  		return -EFAULT;
5bde4d181793be Roland McGrath 2008-01-30  325  
5bde4d181793be Roland McGrath 2008-01-30  326  	return regset->set(target, regset, offset, size, NULL, data);
5bde4d181793be Roland McGrath 2008-01-30  327  }
5bde4d181793be Roland McGrath 2008-01-30  328  

:::::: The code at line 323 was first introduced by commit
:::::: 96d4f267e40f9509e8a66e2b39e8b95655617693 Remove 'type' argument from access_ok() function

:::::: TO: Linus Torvalds <torvalds@linux-foundation.org>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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

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