linux-kernel - [PATCH] cifs: fix wrong release in sess_alloc

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Date:   Tue, 17 Aug 2021 22:55:10 +0800
From:   Ding Hui <dinghui@...gfor.com.cn>
To:     sfrench@...ba.org
Cc:     linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
        linux-kernel@...r.kernel.org, Ding Hui <dinghui@...gfor.com.cn>
Subject: [PATCH] cifs: fix wrong release in sess_alloc_buffer() failed path

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@...gfor.com.cn>
---
 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 c5785fd3f52e..606fd7d6cb71 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -877,7 +877,7 @@ 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;
-- 
2.17.1