From: Ronnie Sahlberg <lsahlber@redhat.com>
Date: Tue, 13 Feb 2018 15:42:30 +1100
Subject: [PATCH] cifs: fix memory leak in SMB2_open()
Git-commit: b7a73c84eb96dabd6bb8e9d7c56f796d83efee8e
Patch-mainline: v4.17-rc1
References: bsc#1112894, bsc#1144333

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
CC: Stable <stable@vger.kernel.org>
Acked-by: Aurelien Aptel <aaptel@suse.com>
---
 fs/cifs/smb2pdu.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 63778ac22fd9..ab4c20687cc0 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1738,8 +1738,10 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
 		rc = alloc_path_with_tree_prefix(&copy_path, &copy_size,
 						 &name_len,
 						 tcon->treeName, path);
-		if (rc)
+		if (rc) {
+			cifs_small_buf_release(req);
 			return rc;
+		}
 		req->NameLength = cpu_to_le16(name_len * 2);
 		uni_path_len = copy_size;
 		path = copy_path;
@@ -1750,8 +1752,10 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
 		if (uni_path_len % 8 != 0) {
 			copy_size = roundup(uni_path_len, 8);
 			copy_path = kzalloc(copy_size, GFP_KERNEL);
-			if (!copy_path)
+			if (!copy_path) {
+				cifs_small_buf_release(req);
 				return -ENOMEM;
+			}
 			memcpy((char *)copy_path, (const char *)path,
 			       uni_path_len);
 			uni_path_len = copy_size;
-- 
2.16.4