drivers/gpu/drm/xe/xe_oa.c:401:15: sparse: sparse: incorrect type in initializer (different address spaces)

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   850925a8133c73c4a2453c360b2c3beb3bab67c9
commit: cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0 drm/xe/oa/uapi: Add/remove OA config perf ops
date:   4 months ago
config: arm-randconfig-r123-20241027 (https://download.01.org/0day-ci/archive/20241027/202410271916.ugChvDGA-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 5886454669c3c9026f7f27eab13509dd0241f2d6)
reproduce: (https://download.01.org/0day-ci/archive/20241027/202410271916.ugChvDGA-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/202410271916.ugChvDGA-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/gpu/drm/xe/xe_oa.c:388:25: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected unsigned long long [usertype] *ptr @@     got void [noderef] __user * @@
   drivers/gpu/drm/xe/xe_oa.c:388:25: sparse:     expected unsigned long long [usertype] *ptr
   drivers/gpu/drm/xe/xe_oa.c:388:25: sparse:     got void [noderef] __user *
>> drivers/gpu/drm/xe/xe_oa.c:401:15: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected unsigned long long [noderef] __user *register __p @@     got unsigned long long [usertype] *ptr @@
   drivers/gpu/drm/xe/xe_oa.c:401:15: sparse:     expected unsigned long long [noderef] __user *register __p
   drivers/gpu/drm/xe/xe_oa.c:401:15: sparse:     got unsigned long long [usertype] *ptr

vim +401 drivers/gpu/drm/xe/xe_oa.c

   377	
   378	/**
   379	 * xe_oa_remove_config_ioctl - Removes one OA config
   380	 * @dev: @drm_device
   381	 * @data: pointer to struct @drm_xe_perf_param
   382	 * @file: @drm_file
   383	 */
   384	int xe_oa_remove_config_ioctl(struct drm_device *dev, u64 data, struct drm_file *file)
   385	{
   386		struct xe_oa *oa = &to_xe_device(dev)->oa;
   387		struct xe_oa_config *oa_config;
   388		u64 arg, *ptr = u64_to_user_ptr(data);
   389		int ret;
   390	
   391		if (!oa->xe) {
   392			drm_dbg(&oa->xe->drm, "xe oa interface not available for this system\n");
   393			return -ENODEV;
   394		}
   395	
   396		if (xe_perf_stream_paranoid && !perfmon_capable()) {
   397			drm_dbg(&oa->xe->drm, "Insufficient privileges to remove xe OA config\n");
   398			return -EACCES;
   399		}
   400	
 > 401		ret = get_user(arg, ptr);
   402		if (XE_IOCTL_DBG(oa->xe, ret))
   403			return ret;
   404	
   405		ret = mutex_lock_interruptible(&oa->metrics_lock);
   406		if (ret)
   407			return ret;
   408	
   409		oa_config = idr_find(&oa->metrics_idr, arg);
   410		if (!oa_config) {
   411			drm_dbg(&oa->xe->drm, "Failed to remove unknown OA config\n");
   412			ret = -ENOENT;
   413			goto err_unlock;
   414		}
   415	
   416		WARN_ON(arg != oa_config->id);
   417	
   418		sysfs_remove_group(oa->metrics_kobj, &oa_config->sysfs_metric);
   419		idr_remove(&oa->metrics_idr, arg);
   420	
   421		mutex_unlock(&oa->metrics_lock);
   422	
   423		drm_dbg(&oa->xe->drm, "Removed config %s id=%i\n", oa_config->uuid, oa_config->id);
   424	
   425		xe_oa_config_put(oa_config);
   426	
   427		return 0;
   428	
   429	err_unlock:
   430		mutex_unlock(&oa->metrics_lock);
   431		return ret;
   432	}
   433	

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