linux-kernel - [hch-misc:i915-mdev 37/40] virt/kvm/vfio.c:63:19: error: redefinition of 'kv'

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Date:   Sun, 25 Jul 2021 11:44:50 +0800
From:   kernel test robot <lkp@...el.com>
To:     Christoph Hellwig <hch@....de>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [hch-misc:i915-mdev 37/40] virt/kvm/vfio.c:63:19: error:
 redefinition of 'kv'

tree:   git://git.infradead.org/users/hch/misc.git i915-mdev
head:   3e7e1da34feaeb5473f397c9cab73b4eb7f6a33c
commit: 4e07f42532ddb1837a7eeb3e1ed6dc18fa673220 [37/40] kvm/vfio: refactor kvm_vfio_set_group
config: powerpc64-randconfig-p001-20210725 (attached as .config)
compiler: powerpc-linux-gcc (GCC) 10.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add hch-misc git://git.infradead.org/users/hch/misc.git
        git fetch --no-tags hch-misc i915-mdev
        git checkout 4e07f42532ddb1837a7eeb3e1ed6dc18fa673220
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   virt/kvm/vfio.c: In function 'kvm_vfio_set_spapr_tce':
>> virt/kvm/vfio.c:63:19: error: redefinition of 'kv'
      63 |  struct kvm_vfio *kv = dev->private;
         |                   ^~
   virt/kvm/vfio.c:60:19: note: previous definition of 'kv' was here
      60 |  struct kvm_vfio *kv = dev->private;
         |                   ^~
>> virt/kvm/vfio.c:65:25: error: redeclaration of 'kvg' with no linkage
      65 |  struct kvm_vfio_group *kvg;
         |                         ^~~
   virt/kvm/vfio.c:61:25: note: previous declaration of 'kvg' was here
      61 |  struct kvm_vfio_group *kvg;
         |                         ^~~


vim +/kv +63 virt/kvm/vfio.c

    57	
    58	static int kvm_vfio_set_spapr_tce(struct kvm_device *dev, void __user *argp)
    59	{
    60		struct kvm_vfio *kv = dev->private;
    61		struct kvm_vfio_group *kvg;
    62		struct kvm_vfio_spapr_tce param;
  > 63		struct kvm_vfio *kv = dev->private;
    64		struct vfio_group *vfio_group;
  > 65		struct kvm_vfio_group *kvg;
    66		struct iommu_group *grp;
    67		struct fd f;
    68		int ret;
    69	
    70		if (copy_from_user(&param, argp, sizeof(struct kvm_vfio_spapr_tce)))
    71			return -EFAULT;
    72	
    73		f = fdget(param.groupfd);
    74		if (!f.file)
    75			return -EBADF;
    76		vfio_group = vfio_group_get_external_user(f.file);
    77		fdput(f);
    78	
    79		if (IS_ERR(vfio_group))
    80			return PTR_ERR(vfio_group);
    81	
    82		ret = -EIO;
    83		grp = kvm_vfio_group_get_iommu_group(vfio_group);
    84		if (WARN_ON_ONCE(!grp))
    85			goto out;
    86	
    87		ret = -ENOENT;
    88		mutex_lock(&kv->lock);
    89		list_for_each_entry(kvg, &kv->group_list, node) {
    90			if (kvg->vfio_group != vfio_group)
    91				continue;
    92			ret = kvm_spapr_tce_attach_iommu_group(dev->kvm, param.tablefd,
    93							       grp);
    94			break;
    95		}
    96		mutex_unlock(&kv->lock);
    97	
    98		iommu_group_put(grp);
    99	out:
   100		vfio_group_put_external_user(vfio_group);
   101		return ret;
   102	}
   103	#else
   104	static inline void kvm_spapr_tce_release_vfio_group(struct kvm *kvm,
   105			struct vfio_group *vfio_group)
   106	{
   107	}
   108	#endif /* CONFIG_SPAPR_TCE_IOMMU */
   109	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (33621 bytes)