[android-common:android17-6.18-2026-06 0/1] fs/fuse/fuse_bpf_backing.c:156:16: sparse: sparse: Using plain integer as NULL pointer

[android-common:android17-6.18-2026-06 0/1] fs/fuse/fuse_bpf_backing.c:156:16: sparse: sparse: Using plain integer as NULL pointer

[kernel test robot]

tree:   https://android.googlesource.com/kernel/common android17-6.18-2026-06
head:   de2fe859a26ac8b782d8d325668854871edb9f6d
commit: be926e6761d28d105ba672242e81e911e0d7e5e0 [0/1] ANDROID: fuse-bpf: fuse-bpf v1.3
config: i386-randconfig-061-20260904 (https://download.01.org/0day-ci/archive/20260906/202609060108.q8MKmXJY-lkp@intel.com/config)
compiler: gcc-13 (Debian 13.3.0-16) 13.3.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260906/202609060108.q8MKmXJY-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/202609060108.q8MKmXJY-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> fs/fuse/fuse_bpf_backing.c:156:16: sparse: sparse: Using plain integer as NULL pointer
   fs/fuse/fuse_bpf_backing.c:315:16: sparse: sparse: Using plain integer as NULL pointer
>> fs/fuse/fuse_bpf_backing.c:862:48: sparse: sparse: incorrect type in argument 4 (different base types) @@     expected restricted __kernel_rwf_t [usertype] flags @@     got int @@
   fs/fuse/fuse_bpf_backing.c:862:48: sparse:     expected restricted __kernel_rwf_t [usertype] flags
   fs/fuse/fuse_bpf_backing.c:862:48: sparse:     got int
   fs/fuse/fuse_bpf_backing.c:949:59: sparse: sparse: incorrect type in argument 4 (different base types) @@     expected restricted __kernel_rwf_t [usertype] flags @@     got int @@
   fs/fuse/fuse_bpf_backing.c:949:59: sparse:     expected restricted __kernel_rwf_t [usertype] flags
   fs/fuse/fuse_bpf_backing.c:949:59: sparse:     got int
>> fs/fuse/fuse_bpf_backing.c:2142:18: sparse: sparse: Initializer entry defined twice
   fs/fuse/fuse_bpf_backing.c:2143:18: sparse:   also defined here

vim +156 fs/fuse/fuse_bpf_backing.c

   145	
   146	void *fuse_open_finalize(struct fuse_bpf_args *fa,
   147			       struct inode *inode, struct file *file, bool isdir)
   148	{
   149		struct fuse_file *ff = file->private_data;
   150		struct fuse_open_out *foo = fa->out_args[0].value;
   151	
   152		if (ff) {
   153			ff->fh = foo->fh;
   154			ff->nodeid = get_fuse_inode(inode)->nodeid;
   155		}
 > 156		return 0;
   157	}
   158	

--
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https://github.com/intel/lkp-tests/wiki