linux-kernel - [PATCH v2] um: vector: Fix memory leak in vector

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Message-Id: <20230104081408.4074275-1-linmq006@gmail.com>
Date:   Wed,  4 Jan 2023 12:14:05 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Johannes Berg <johannes@...solutions.net>,
        Miaoqian Lin <linmq006@...il.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-um@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2] um: vector: Fix memory leak in vector_config

kstrdup() return newly allocated copy of the string.
Call kfree() to release the memory when uml_parse_vector_ifspec() fails.

Fixes: 49da7e64f33e ("High Performance UML Vector Network Driver")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
changes in v2:
- only call kfree() when uml_parse_vector_ifspec() fails.
---
 arch/um/drivers/vector_kern.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
index ded7c47d2fbe..131b7cb29576 100644
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -767,6 +767,7 @@ static int vector_config(char *str, char **error_out)
 
 	if (parsed == NULL) {
 		*error_out = "vector_config failed to parse parameters";
+		kfree(params);
 		return -EINVAL;
 	}
 
-- 
2.25.1