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

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Message-ID: <202412110733.NL3DGHyV-lkp@intel.com>
Date: Wed, 11 Dec 2024 07:56:16 +0800
From: kernel test robot <lkp@...el.com>
To: Ashutosh Dixit <ashutosh.dixit@...el.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Umesh Nerlige Ramappa <umesh.nerlige.ramappa@...el.com>
Subject: drivers/gpu/drm/xe/xe_oa.c:401:15: sparse: sparse: incorrect type in
 initializer (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7cb1b466315004af98f6ba6c2546bb713ca3c237
commit: cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0 drm/xe/oa/uapi: Add/remove OA config perf ops
date:   6 months ago
config: csky-randconfig-r121-20241211 (https://download.01.org/0day-ci/archive/20241211/202412110733.NL3DGHyV-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 14.2.0
reproduce: (https://download.01.org/0day-ci/archive/20241211/202412110733.NL3DGHyV-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202412110733.NL3DGHyV-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 void const [noderef] __user *__p @@     got unsigned long long [usertype] *ptr @@
   drivers/gpu/drm/xe/xe_oa.c:401:15: sparse:     expected void const [noderef] __user *__p
   drivers/gpu/drm/xe/xe_oa.c:401:15: sparse:     got unsigned long long [usertype] *ptr
   drivers/gpu/drm/xe/xe_oa.c: note: in included file (through include/linux/sched/task.h, include/linux/sched/signal.h, include/linux/rcuwait.h, ...):
   include/linux/uaccess.h:102:38: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const *from @@     got void const [noderef] __user *from @@
   include/linux/uaccess.h:102:38: sparse:     expected void const *from
   include/linux/uaccess.h:102:38: sparse:     got void const [noderef] __user *from

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	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki