fs/9p, net/9p: memory leak fixes

Four memory leak fixes in the 9P code.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

2 files changed, 8 insertions, 1 deletions

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index c7c23eab9440..84159cf9c521 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -1128,6 +1128,7 @@ v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
         v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb);
                 generic_fillattr(dentry->d_inode, stat);
 
+        p9stat_free(st);
         kfree(st);
         return 0;
 }
@@ -1489,6 +1490,7 @@ static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen)
 
         retval = strnlen(buffer, buflen);
 done:
+        p9stat_free(st);
         kfree(st);
         return retval;
 }
diff --git a/net/9p/client.c b/net/9p/client.c
index dc6f2f26d023..9eb72505308f 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -331,8 +331,10 @@ static void p9_tag_cleanup(struct p9_client *c)
                 }
         }
 
-        if (c->tagpool)
+        if (c->tagpool) {
+                p9_idpool_put(0, c->tagpool); /* free reserved tag 0 */
                 p9_idpool_destroy(c->tagpool);
+        }
 
         /* free requests associated with tags */
         for (row = 0; row < (c->max_tag/P9_ROW_MAXTAG); row++) {
@@ -944,6 +946,7 @@ struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
         int16_t nwqids, count;
 
         err = 0;
+        wqids = NULL;
         clnt = oldfid->clnt;
         if (clone) {
                 fid = p9_fid_create(clnt);
@@ -994,9 +997,11 @@ struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
         else
                 fid->qid = oldfid->qid;
 
+        kfree(wqids);
         return fid;
 
 clunk_fid:
+        kfree(wqids);
         p9_client_clunk(fid);
         fid = NULL;