NFSD: Put file after ima_file_check fail in nfsd_open()

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/vfs.c

@@ -649,6 +649,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
 {
 	struct path	path;
 	struct inode	*inode;
+	struct file	*file;
 	int		flags = O_RDONLY|O_LARGEFILE;
 	__be32		err;
 	int		host_err = 0;
@@ -703,19 +704,25 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
 		else
 			flags = O_WRONLY|O_LARGEFILE;
 	}
-	*filp = dentry_open(&path, flags, current_cred());
-	if (IS_ERR(*filp)) {
-		host_err = PTR_ERR(*filp);
-		*filp = NULL;
-	} else {
-		host_err = ima_file_check(*filp, may_flags);
+
+	file = dentry_open(&path, flags, current_cred());
+	if (IS_ERR(file)) {
+		host_err = PTR_ERR(file);
+		goto out_nfserr;
+	}
+
+	host_err = ima_file_check(file, may_flags);
+	if (host_err) {
+		nfsd_close(file);
+		goto out_nfserr;
+	}
 
 	if (may_flags & NFSD_MAY_64BIT_COOKIE)
-			(*filp)->f_mode |= FMODE_64BITHASH;
+		file->f_mode |= FMODE_64BITHASH;
 	else
-			(*filp)->f_mode |= FMODE_32BITHASH;
-	}
+		file->f_mode |= FMODE_32BITHASH;
 
+	*filp = file;
 out_nfserr:
 	err = nfserrno(host_err);
 out: