[linux-next:master 2683/4234] drivers/accel/amdxdna/aie2_pci.c:794:13: sparse: sparse: incorrect type in assignment (different address spaces)

[linux-next:master 2683/4234] drivers/accel/amdxdna/aie2_pci.c:794:13: sparse: sparse: incorrect type in assignment (different address spaces)

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   0f4c93f7eb861acab537dbe94441817a270537bf
commit: c8cea4371e5eca30cda8660aabb337747dabc51d [2683/4234] accel/amdxdna: Add a function to walk hardware contexts
config: x86_64-randconfig-122-20250823 (https://download.01.org/0day-ci/archive/20250823/202508230855.0b9efFl6-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/20250823/202508230855.0b9efFl6-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/202508230855.0b9efFl6-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/accel/amdxdna/aie2_pci.c:794:13: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct amdxdna_drm_query_hwctx [noderef] __user *tmp @@     got void *[assigned] _res @@
   drivers/accel/amdxdna/aie2_pci.c:794:13: sparse:     expected struct amdxdna_drm_query_hwctx [noderef] __user *tmp
   drivers/accel/amdxdna/aie2_pci.c:794:13: sparse:     got void *[assigned] _res
>> drivers/accel/amdxdna/aie2_pci.c:807:31: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const *from @@     got struct amdxdna_drm_query_hwctx [noderef] __user *tmp @@
   drivers/accel/amdxdna/aie2_pci.c:807:31: sparse:     expected void const *from
   drivers/accel/amdxdna/aie2_pci.c:807:31: sparse:     got struct amdxdna_drm_query_hwctx [noderef] __user *tmp
>> drivers/accel/amdxdna/aie2_pci.c:798:9: sparse: sparse: dereference of noderef expression
   drivers/accel/amdxdna/aie2_pci.c:799:9: sparse: sparse: dereference of noderef expression
   drivers/accel/amdxdna/aie2_pci.c:800:9: sparse: sparse: dereference of noderef expression
   drivers/accel/amdxdna/aie2_pci.c:801:9: sparse: sparse: dereference of noderef expression
   drivers/accel/amdxdna/aie2_pci.c:802:9: sparse: sparse: dereference of noderef expression
   drivers/accel/amdxdna/aie2_pci.c:803:9: sparse: sparse: dereference of noderef expression

vim +794 drivers/accel/amdxdna/aie2_pci.c

850d71f6bf4c20 Lizhi Hou 2024-11-18  785  
c8cea4371e5eca Lizhi Hou 2025-08-15  786  static int aie2_hwctx_status_cb(struct amdxdna_hwctx *hwctx, void *arg)
850d71f6bf4c20 Lizhi Hou 2024-11-18  787  {
c8cea4371e5eca Lizhi Hou 2025-08-15  788  	struct amdxdna_drm_query_hwctx __user *buf, *tmp __free(kfree) = NULL;
c8cea4371e5eca Lizhi Hou 2025-08-15  789  	struct amdxdna_drm_get_info *get_info_args = arg;
850d71f6bf4c20 Lizhi Hou 2024-11-18  790  
c8cea4371e5eca Lizhi Hou 2025-08-15  791  	if (get_info_args->buffer_size < sizeof(*tmp))
c8cea4371e5eca Lizhi Hou 2025-08-15  792  		return -EINVAL;
850d71f6bf4c20 Lizhi Hou 2024-11-18  793  
850d71f6bf4c20 Lizhi Hou 2024-11-18 @794  	tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
850d71f6bf4c20 Lizhi Hou 2024-11-18  795  	if (!tmp)
850d71f6bf4c20 Lizhi Hou 2024-11-18  796  		return -ENOMEM;
850d71f6bf4c20 Lizhi Hou 2024-11-18  797  
c8cea4371e5eca Lizhi Hou 2025-08-15 @798  	tmp->pid = hwctx->client->pid;
850d71f6bf4c20 Lizhi Hou 2024-11-18  799  	tmp->context_id = hwctx->id;
850d71f6bf4c20 Lizhi Hou 2024-11-18  800  	tmp->start_col = hwctx->start_col;
850d71f6bf4c20 Lizhi Hou 2024-11-18  801  	tmp->num_col = hwctx->num_col;
850d71f6bf4c20 Lizhi Hou 2024-11-18  802  	tmp->command_submissions = hwctx->priv->seq;
850d71f6bf4c20 Lizhi Hou 2024-11-18  803  	tmp->command_completions = hwctx->priv->completed;
850d71f6bf4c20 Lizhi Hou 2024-11-18  804  
c8cea4371e5eca Lizhi Hou 2025-08-15  805  	buf = u64_to_user_ptr(get_info_args->buffer);
c8cea4371e5eca Lizhi Hou 2025-08-15  806  
c8cea4371e5eca Lizhi Hou 2025-08-15 @807  	if (copy_to_user(buf, tmp, sizeof(*tmp)))
c8cea4371e5eca Lizhi Hou 2025-08-15  808  		return -EFAULT;
c8cea4371e5eca Lizhi Hou 2025-08-15  809  
c8cea4371e5eca Lizhi Hou 2025-08-15  810  	get_info_args->buffer += sizeof(*tmp);
c8cea4371e5eca Lizhi Hou 2025-08-15  811  	get_info_args->buffer_size -= sizeof(*tmp);
c8cea4371e5eca Lizhi Hou 2025-08-15  812  
c8cea4371e5eca Lizhi Hou 2025-08-15  813  	return 0;
850d71f6bf4c20 Lizhi Hou 2024-11-18  814  }
850d71f6bf4c20 Lizhi Hou 2024-11-18  815  

:::::: The code at line 794 was first introduced by commit
:::::: 850d71f6bf4c2010efae845f9ff841cce902f22c accel/amdxdna: Add query functions

:::::: TO: Lizhi Hou <lizhi.hou@amd.com>
:::::: CC: Jeffrey Hugo <quic_jhugo@quicinc.com>

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