From: Xiu Jianfeng <xiujianfeng@huawei.com>
Date: Wed, 16 Nov 2022 12:22:37 +0000 (+0800)
Subject: ksmbd: Fix resource leak in ksmbd_session_rpc_open()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f9ed133381eba883c5e0059063d5b3ca7cac6d41;p=users%2Fjedix%2Flinux-maple.git

ksmbd: Fix resource leak in ksmbd_session_rpc_open()

[ Upstream commit bc044414fa0326a4e5c3c509c00b1fcaf621b5f4 ]

When ksmbd_rpc_open() fails then it must call ksmbd_rpc_id_free() to
undo the result of ksmbd_ipc_id_alloc().

Fixes: e2f34481b24d ("cifsd: add server-side procedures for SMB3")
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/fs/ksmbd/mgmt/user_session.c b/fs/ksmbd/mgmt/user_session.c
index 3fa2139a0b309..92b1603b5abeb 100644
--- a/fs/ksmbd/mgmt/user_session.c
+++ b/fs/ksmbd/mgmt/user_session.c
@@ -108,15 +108,17 @@ int ksmbd_session_rpc_open(struct ksmbd_session *sess, char *rpc_name)
 	entry->method = method;
 	entry->id = ksmbd_ipc_id_alloc();
 	if (entry->id < 0)
-		goto error;
+		goto free_entry;
 
 	resp = ksmbd_rpc_open(sess, entry->id);
 	if (!resp)
-		goto error;
+		goto free_id;
 
 	kvfree(resp);
 	return entry->id;
-error:
+free_id:
+	ksmbd_rpc_id_free(entry->id);
+free_entry:
 	list_del(&entry->list);
 	kfree(entry);
 	return -EINVAL;