[android-common:android13-5.15 1/3] fs/fuse/backing.c:1218:undefined reference to `fuse_get_bpf_prog'

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

tree:   https://android.googlesource.com/kernel/common android13-5.15
head:   7ea5014410f786539cbdc8efa564732410677818
commit: f5f4199c102aa676998b42abff60d071385c1c0c [1/3] ANDROID: fuse-bpf v1.1
config: x86_64-randconfig-013-20240531 (https://download.01.org/0day-ci/archive/20240531/202405310502.LwiMndTe-lkp@intel.com/config)
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240531/202405310502.LwiMndTe-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/202405310502.LwiMndTe-lkp@intel.com/

All errors (new ones prefixed by >>):

   ld: fs/fuse/backing.o: in function `fuse_handle_bpf_prog':
>> fs/fuse/backing.c:1218:(.text+0xaa8e): undefined reference to `fuse_get_bpf_prog'

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for DRM_MIPI_DSI
   Depends on [n]: HAS_IOMEM [=y] && DRM [=n]
   Selected by [y]:
   - GKI_HIDDEN_DRM_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for SND_JACK
   Depends on [n]: SOUND [=y] && !UML && SND [=n]
   Selected by [y]:
   - GKI_HIDDEN_SND_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for DRM_KMS_CMA_HELPER
   Depends on [n]: HAS_IOMEM [=y] && DRM [=n]
   Selected by [y]:
   - GKI_HIDDEN_DRM_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for SND_VMASTER
   Depends on [n]: SOUND [=y] && !UML && SND [=n]
   Selected by [y]:
   - GKI_HIDDEN_SND_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for SND_PCM_IEC958
   Depends on [n]: SOUND [=y] && !UML && SND [=n]
   Selected by [y]:
   - GKI_HIDDEN_SND_SOC_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for SND_JACK_INPUT_DEV
   Depends on [n]: SOUND [=y] && !UML && SND [=n] && SND_JACK [=y]
   Selected by [y]:
   - GKI_HIDDEN_SND_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for SND_PCM_ELD
   Depends on [n]: SOUND [=y] && !UML && SND [=n]
   Selected by [y]:
   - GKI_HIDDEN_SND_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for DRM_GEM_CMA_HELPER
   Depends on [n]: HAS_IOMEM [=y] && DRM [=n]
   Selected by [y]:
   - GKI_HIDDEN_DRM_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for SND_INTEL_NHLT
   Depends on [n]: SOUND [=y] && !UML && SND [=n]
   Selected by [y]:
   - GKI_HIDDEN_SND_CONFIGS [=y] && ACPI [=y]


vim +1218 fs/fuse/backing.c

  1186	
  1187	int fuse_handle_bpf_prog(struct fuse_entry_bpf *feb, struct inode *parent,
  1188				 struct bpf_prog **bpf)
  1189	{
  1190		struct fuse_inode *pi;
  1191	
  1192		// Parent isn't presented, but we want to keep
  1193		// Don't touch bpf program at all in this case
  1194		if (feb->out.bpf_action == FUSE_ACTION_KEEP && !parent)
  1195			goto out;
  1196	
  1197		if (*bpf) {
  1198			bpf_prog_put(*bpf);
  1199			*bpf = NULL;
  1200		}
  1201	
  1202		switch (feb->out.bpf_action) {
  1203		case FUSE_ACTION_KEEP:
  1204			pi = get_fuse_inode(parent);
  1205			*bpf = pi->bpf;
  1206			if (*bpf)
  1207				bpf_prog_inc(*bpf);
  1208			break;
  1209	
  1210		case FUSE_ACTION_REMOVE:
  1211			break;
  1212	
  1213		case FUSE_ACTION_REPLACE: {
  1214			struct file *bpf_file = feb->bpf_file;
  1215			struct bpf_prog *bpf_prog = ERR_PTR(-EINVAL);
  1216	
  1217			if (bpf_file && !IS_ERR(bpf_file))
> 1218				bpf_prog = fuse_get_bpf_prog(bpf_file);
  1219	
  1220			if (IS_ERR(bpf_prog))
  1221				return PTR_ERR(bpf_prog);
  1222	
  1223			*bpf = bpf_prog;
  1224			break;
  1225		}
  1226	
  1227		default:
  1228			return -EINVAL;
  1229		}
  1230	
  1231	out:
  1232		return 0;
  1233	}
  1234	

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