linux-kernel - [PATCH] smb: client: compress: fix an "illegal accesses" issue

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Message-Id: <20240913032448.174936-1-qianqiang.liu@163.com>
Date: Fri, 13 Sep 2024 11:24:49 +0800
From: Qianqiang Liu <qianqiang.liu@....com>
To: ematsumiya@...e.de,
	sfrench@...ba.org
Cc: linux-cifs@...r.kernel.org,
	samba-technical@...ts.samba.org,
	linux-kernel@...r.kernel.org,
	Qianqiang Liu <qianqiang.liu@....com>
Subject: [PATCH] smb: client: compress: fix an "illegal accesses" issue

Using uninitialized value "bkt" when calling "kfree"

Fixes: 13b68d44990d9 ("mb: client: compress: LZ77 code improvements cleanup")
Signed-off-by: Qianqiang Liu <qianqiang.liu@....com>
---
 fs/smb/client/compress.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/smb/client/compress.c b/fs/smb/client/compress.c
index daf84e39861c..2c008e9f0206 100644
--- a/fs/smb/client/compress.c
+++ b/fs/smb/client/compress.c
@@ -233,7 +233,7 @@ static int collect_sample(const struct iov_iter *iter, ssize_t max, u8 *sample)
 static int is_compressible(const struct iov_iter *data)
 {
 	const size_t read_size = SZ_2K, bkt_size = 256, max = SZ_4M;
-	struct bucket *bkt;
+	struct bucket *bkt = NULL;
 	int i = 0, ret = 0;
 	size_t len;
 	u8 *sample;
-- 
2.34.1