Re: [PATCH v9 06/11] io_uring: introduce attributes for read/write and PI support

[kernel test robot <lkp@intel.com>]

Hi Anuj,

kernel test robot noticed the following build warnings:

[auto build test WARNING on axboe-block/for-next]
[also build test WARNING on next-20241115]
[cannot apply to brauner-vfs/vfs.all mkp-scsi/for-next hch-configfs/for-next linus/master jejb-scsi/for-next v6.12-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Anuj-Gupta/block-define-set-of-integrity-flags-to-be-inherited-by-cloned-bip/20241114-193419
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
patch link:    https://lore.kernel.org/r/20241114104517.51726-7-anuj20.g%40samsung.com
patch subject: [PATCH v9 06/11] io_uring: introduce attributes for read/write and PI support
config: arc-nsimosci_hs_smp_defconfig (https://download.01.org/0day-ci/archive/20241117/202411170724.GLZyWdlD-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241117/202411170724.GLZyWdlD-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411170724.GLZyWdlD-lkp@intel.com/

All warnings (new ones prefixed by >>):

   io_uring/rw.c: In function 'io_prep_pi_indirect':
>> io_uring/rw.c:305:38: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
     305 |         if (copy_from_user(&pi_attr, (void __user *)pi_attr_addr, sizeof(pi_attr)))
         |                                      ^
   io_uring/rw.c: In function 'io_prep_attr_vec':
   io_uring/rw.c:321:38: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
     321 |         if (copy_from_user(attr_vec, (void __user *)attr_addr, attr_vec_size))
         |                                      ^


vim +305 io_uring/rw.c

   298	
   299	
   300	static inline int io_prep_pi_indirect(struct io_kiocb *req, struct io_rw *rw,
   301					      int ddir, u64 pi_attr_addr)
   302	{
   303		struct io_uring_attr_pi pi_attr;
   304	
 > 305		if (copy_from_user(&pi_attr, (void __user *)pi_attr_addr, sizeof(pi_attr)))
   306			return -EFAULT;
   307		return io_prep_rw_pi(req, rw, ddir, &pi_attr);
   308	}
   309	

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