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From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Ding Hui <dinghui@sangfor.com.cn>, Paulo Alcantara <pc@cjr.nz>,
        Steve French <stfrench@microsoft.com>,
        Sasha Levin <sashal@kernel.org>, linux-cifs@vger.kernel.org,
        samba-technical@lists.samba.org
Subject: [PATCH AUTOSEL 4.14 48/59] cifs: fix wrong release in sess_alloc_buffer() failed path
Date:   Thu,  9 Sep 2021 07:58:49 -0400
Message-Id: <20210909115900.149795-48-sashal@kernel.org>
In-Reply-To: <20210909115900.149795-1-sashal@kernel.org>
References: <20210909115900.149795-1-sashal@kernel.org>
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From: Ding Hui <dinghui@sangfor.com.cn>

[ Upstream commit d72c74197b70bc3c95152f351a568007bffa3e11 ]

smb_buf is allocated by small_smb_init_no_tc(), and buf type is
CIFS_SMALL_BUFFER, so we should use cifs_small_buf_release() to
release it in failed path.

Signed-off-by: Ding Hui <dinghui@sangfor.com.cn>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/cifs/sess.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index aa23c00367ec..0113dba28eb0 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -602,7 +602,7 @@ sess_alloc_buffer(struct sess_data *sess_data, int wct)
 	return 0;
 
 out_free_smb_buf:
-	kfree(smb_buf);
+	cifs_small_buf_release(smb_buf);
 	sess_data->iov[0].iov_base = NULL;
 	sess_data->iov[0].iov_len = 0;
 	sess_data->buf0_type = CIFS_NO_BUFFER;
-- 
2.30.2