[vhost:vhost 14/14] drivers/vhost/vhost.c:915:30: warning: passing argument 2 of 'access_ok' makes pointer from integer without a cast

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost
head:   51ce50c54895044f949129e595ed9a37e4d6c13a
commit: 51ce50c54895044f949129e595ed9a37e4d6c13a [14/14] vhost: new device 
IOTLB API
config: sparc64-allmodconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609
reproduce:
        wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 51ce50c54895044f949129e595ed9a37e4d6c13a
        # save the attached .config to linux build tree
        make.cross ARCH=sparc64 

All warnings (new ones prefixed by >>):

   drivers/vhost/vhost.c: In function 'umem_access_ok':
>> drivers/vhost/vhost.c:915:30: warning: passing argument 2 of 'access_ok' 
>> makes pointer from integer without a cast [-Wint-conversion]
         !access_ok(VERIFY_READ, uaddr, size))
                                 ^
   In file included from arch/sparc/include/asm/uaccess.h:4:0,
                    from include/linux/poll.h:11,
                    from drivers/vhost/vhost.c:21:
   arch/sparc/include/asm/uaccess_64.h:79:19: note: expected 'const void *' but 
argument is of type 'u64 {aka long long unsigned int}'
    static inline int access_ok(int type, const void __user * addr, unsigned 
long size)
                      ^
   drivers/vhost/vhost.c:918:31: warning: passing argument 2 of 'access_ok' 
makes pointer from integer without a cast [-Wint-conversion]
         !access_ok(VERIFY_WRITE, uaddr, size))
                                  ^
   In file included from arch/sparc/include/asm/uaccess.h:4:0,
                    from include/linux/poll.h:11,
                    from drivers/vhost/vhost.c:21:
   arch/sparc/include/asm/uaccess_64.h:79:19: note: expected 'const void *' but 
argument is of type 'u64 {aka long long unsigned int}'
    static inline int access_ok(int type, const void __user * addr, unsigned 
long size)
                      ^

vim +/access_ok +915 drivers/vhost/vhost.c

   899                  struct vhost_iotlb_msg *vq_msg = &node->msg.iotlb;
   900                  if (msg->iova <= vq_msg->iova &&
   901                      msg->iova + msg->size - 1 > vq_msg->iova &&
   902                      vq_msg->type == VHOST_IOTLB_MISS) {
   903                          vhost_poll_queue(&node->vq->poll);
   904                          list_del(&node->node);
   905                          kfree(node);
   906                  }
   907          }
   908  
   909          spin_unlock(&d->iotlb_lock);
   910  }
   911  
   912  static int umem_access_ok(u64 uaddr, u64 size, int access)
   913  {
   914          if ((access & VHOST_ACCESS_RO) &&
 > 915              !access_ok(VERIFY_READ, uaddr, size))
   916                  return -EFAULT;
   917          if ((access & VHOST_ACCESS_WO) &&
   918              !access_ok(VERIFY_WRITE, uaddr, size))
   919                  return -EFAULT;
   920          return 0;
   921  }
   922  
   923  int vhost_process_iotlb_msg(struct vhost_dev *dev,

---
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.config.gz
Description: Binary data