[norov:compat_get_cpumask 7/8] io_uring/register.c:241:42: error: passing argument 1 of 'compat_get_cpumask' from incompatible pointer type

[norov:compat_get_cpumask 7/8] io_uring/register.c:241:42: error: passing argument 1 of 'compat_get_cpumask' from incompatible pointer type

[kernel test robot]

tree:   https://github.com/norov/linux compat_get_cpumask
head:   b7162e407638adc57cdf6d6f1acea90f9d84a638
commit: bba742e7f4aab4b879cc1620c1b57be76607bff8 [7/8] io_uring/register.c: use compat_get_cpumask
config: x86_64-randconfig-004-20250125 (https://download.01.org/0day-ci/archive/20250126/202501260050.iJS9eGMt-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250126/202501260050.iJS9eGMt-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/202501260050.iJS9eGMt-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/x86/include/asm/ia32.h:7,
                    from arch/x86/include/asm/elf.h:10,
                    from include/linux/elf.h:6,
                    from include/linux/module.h:19,
                    from include/linux/device/driver.h:21,
                    from include/linux/device.h:32,
                    from include/linux/node.h:18,
                    from include/linux/cpu.h:17,
                    from include/linux/static_call.h:135,
                    from include/linux/tracepoint.h:22,
                    from include/trace/syscall.h:5,
                    from include/linux/syscalls.h:94,
                    from io_uring/register.c:9:
   include/linux/compat.h:955:32: warning: 'struct cpumask_t' declared inside parameter list will not be visible outside of this definition or declaration
     955 | long compat_get_cpumask(struct cpumask_t *cpumask, const compat_ulong_t __user *umask,
         |                                ^~~~~~~~~
   io_uring/register.c: In function 'io_register_iowq_aff':
>> io_uring/register.c:241:42: error: passing argument 1 of 'compat_get_cpumask' from incompatible pointer type [-Werror=incompatible-pointer-types]
     241 |                 ret = compat_get_cpumask(new_mask, (const compat_ulong_t __user *)arg, len);
         |                                          ^~~~~~~~
         |                                          |
         |                                          struct cpumask *
   In file included from arch/x86/include/asm/ia32.h:7,
                    from arch/x86/include/asm/elf.h:10,
                    from include/linux/elf.h:6,
                    from include/linux/module.h:19,
                    from include/linux/device/driver.h:21,
                    from include/linux/device.h:32,
                    from include/linux/node.h:18,
                    from include/linux/cpu.h:17,
                    from include/linux/static_call.h:135,
                    from include/linux/tracepoint.h:22,
                    from include/trace/syscall.h:5,
                    from include/linux/syscalls.h:94,
                    from io_uring/register.c:9:
   include/linux/compat.h:955:43: note: expected 'struct cpumask_t *' but argument is of type 'struct cpumask *'
     955 | long compat_get_cpumask(struct cpumask_t *cpumask, const compat_ulong_t __user *umask,
         |                         ~~~~~~~~~~~~~~~~~~^~~~~~~
   cc1: some warnings being treated as errors


vim +/compat_get_cpumask +241 io_uring/register.c

   229	
   230	static __cold int io_register_iowq_aff(struct io_ring_ctx *ctx,
   231					       void __user *arg, unsigned len)
   232	{
   233		cpumask_var_t new_mask;
   234		int ret;
   235	
   236		if (!alloc_cpumask_var(&new_mask, GFP_KERNEL))
   237			return -ENOMEM;
   238	
   239	#ifdef CONFIG_COMPAT
   240		if (in_compat_syscall())
 > 241			ret = compat_get_cpumask(new_mask, (const compat_ulong_t __user *)arg, len);
   242		else
   243	#endif
   244			ret = copy_iowq_aff_cpus(new_mask, arg, len);
   245	
   246		if (ret) {
   247			free_cpumask_var(new_mask);
   248			return -EFAULT;
   249		}
   250	
   251		ret = __io_register_iowq_aff(ctx, new_mask);
   252		free_cpumask_var(new_mask);
   253		return ret;
   254	}
   255	

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