Hello Dave Wysochanski, This is a semi-automatic email about new static checker warnings. The patch bc6d7b12e4ea: "NFS: Convert to the netfs API and nfs_readpage to use netfs_readpage" from Nov 14, 2020, leads to the following Smatch complaint: fs/nfs/read.c:365 nfs_readpage() error: we previously assumed 'file' could be null (see line 356) fs/nfs/read.c 355 356 if (file == NULL) { ^^^^^^^^^^^^ "file" is NULL here 357 ret = -EBADF; 358 desc.ctx = nfs_find_open_context(inode, NULL, FMODE_READ); 359 if (desc.ctx == NULL) 360 goto out_unlock; 361 } else 362 desc.ctx = get_nfs_open_context(nfs_file_open_context(file)); 363 364 if (!IS_SYNC(inode)) { 365 ret = nfs_readpage_from_fscache(file, page, &desc); ^^^^ Unchecked dereference inside function call. 366 if (ret == 0) 367 goto out; regards, dan carpenter