From: Yang Yingliang <yangyingliang@huawei.com>
Date: Sat, 29 May 2021 08:20:56 +0000 (+0800)
Subject: cifsd: fix memleak in ksmbd_vfs_stream_write()
X-Git-Tag: v5.15-rc1~183^2~16^2~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=113ef68d47f5d36611c16a6ef4bd2a837aa344ab;p=thirdparty%2Fkernel%2Fstable.git

cifsd: fix memleak in ksmbd_vfs_stream_write()

Before assigning wbuf to stream_buf, memory allocate in
ksmbd_vfs_getcasexattr() need be freed.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
---

diff --git a/fs/cifsd/vfs.c b/fs/cifsd/vfs.c
index cd037594f4862..e70b67e41cd47 100644
--- a/fs/cifsd/vfs.c
+++ b/fs/cifsd/vfs.c
@@ -429,6 +429,7 @@ static int ksmbd_vfs_stream_write(struct ksmbd_file *fp, char *buf, loff_t *pos,
 
 		if (v_len > 0)
 			memcpy(wbuf, stream_buf, v_len);
+		kvfree(stream_buf);
 		stream_buf = wbuf;
 	}