linux-kernel - [PATCH] staging: mt29f_spinand: fix memory leak while programming pages

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1533116658-14924-1-git-send-email-goodwater.wu@gmail.com>
Date:   Wed,  1 Aug 2018 17:44:18 +0800
From:   Jheng-Jhong Wu <goodwater.wu@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     goodwater.wu@...il.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH] staging: mt29f_spinand: fix memory leak while programming pages

In spinand_program_page(), it uses devm_kzalloc() to allocate memory to
wbuf dynamically if internal ECC is on, but it doesn't free memory
allocated to wbuf at the end of this function. This leads to a memory leak
issue when internal ECC is on.

Signed-off-by: Jheng-Jhong Wu <goodwater.wu@...il.com>
---
 drivers/staging/mt29f_spinand/mt29f_spinand.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/mt29f_spinand/mt29f_spinand.c b/drivers/staging/mt29f_spinand/mt29f_spinand.c
index e389009..cf51ca8 100644
--- a/drivers/staging/mt29f_spinand/mt29f_spinand.c
+++ b/drivers/staging/mt29f_spinand/mt29f_spinand.c
@@ -553,6 +553,8 @@ static int spinand_program_page(struct spi_device *spi_nand,
 		}
 		enable_hw_ecc = 0;
 	}
+
+	devm_kfree(&spi_nand->dev, wbuf);
 #endif
 
 	return 0;
-- 
2.7.4