Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  9p: add missing end-of-options record for trans_fd
  9p: return NULL when trans not found
  9p: use copy of the options value instead of original
  9p: fix memory leak in v9fs_get_sb

fs/9p/v9fs.c

@@ -82,7 +82,7 @@ static match_table_t tokens = {
 
 static void v9fs_parse_options(struct v9fs_session_info *v9ses)
 {
-	char *options = v9ses->options;
+	char *options;
 	substring_t args[MAX_OPT_ARGS];
 	char *p;
 	int option;
@@ -96,9 +96,10 @@ static void v9fs_parse_options(struct v9fs_session_info *v9ses)
 	v9ses->cache = 0;
 	v9ses->trans = v9fs_default_trans();
 
-	if (!options)
+	if (!v9ses->options)
 		return;
 
+	options = kstrdup(v9ses->options, GFP_KERNEL);
 	while ((p = strsep(&options, ",")) != NULL) {
 		int token;
 		if (!*p)
@@ -169,6 +170,7 @@ static void v9fs_parse_options(struct v9fs_session_info *v9ses)
 			continue;
 		}
 	}
+	kfree(options);
 }
 
 /**

fs/9p/vfs_super.c

@@ -119,6 +119,7 @@ static int v9fs_get_sb(struct file_system_type *fs_type, int flags,
 
 	P9_DPRINTK(P9_DEBUG_VFS, " \n");
 
+	st = NULL;
 	v9ses = kzalloc(sizeof(struct v9fs_session_info), GFP_KERNEL);
 	if (!v9ses)
 		return -ENOMEM;
@@ -164,10 +165,12 @@ static int v9fs_get_sb(struct file_system_type *fs_type, int flags,
 	root->d_inode->i_ino = v9fs_qid2ino(&st->qid);
 	v9fs_stat2inode(st, root->d_inode, sb);
 	v9fs_fid_add(root, fid);
+	kfree(st);
 
 	return simple_set_mnt(mnt, sb);
 
 error:
+	kfree(st);
 	if (fid)
 		p9_client_clunk(fid);
 

net/9p/mod.c

@@ -76,9 +76,9 @@ struct p9_trans_module *v9fs_match_trans(const substring_t *name)
 	list_for_each(p, &v9fs_trans_list) {
 		t = list_entry(p, struct p9_trans_module, list);
 		if (strncmp(t->name, name->from, name->to-name->from) == 0)
-			break;
+			return t;
 	}
-	return t;
+	return NULL;
 }
 EXPORT_SYMBOL(v9fs_match_trans);
 

net/9p/trans_fd.c

@@ -62,13 +62,14 @@ struct p9_trans_fd {
 
 enum {
 	/* Options that take integer arguments */
-	Opt_port, Opt_rfdno, Opt_wfdno,
+	Opt_port, Opt_rfdno, Opt_wfdno, Opt_err,
 };
 
 static match_table_t tokens = {
 	{Opt_port, "port=%u"},
 	{Opt_rfdno, "rfdno=%u"},
 	{Opt_wfdno, "wfdno=%u"},
+	{Opt_err, NULL},
 };
 
 /**