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Message-Id: <20221024113010.934162613@linuxfoundation.org>
Date: Mon, 24 Oct 2022 13:32:23 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Philipp Hortmann <philipp.g.hortmann@...il.com>,
Nam Cao <namcaov@...il.com>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 233/255] staging: vt6655: fix potential memory leak
From: Nam Cao <namcaov@...il.com>
[ Upstream commit c8ff91535880d41b49699b3829fb6151942de29e ]
In function device_init_td0_ring, memory is allocated for member
td_info of priv->apTD0Rings[i], with i increasing from 0. In case of
allocation failure, the memory is freed in reversed order, with i
decreasing to 0. However, the case i=0 is left out and thus memory is
leaked.
Modify the memory freeing loop to include the case i=0.
Tested-by: Philipp Hortmann <philipp.g.hortmann@...il.com>
Signed-off-by: Nam Cao <namcaov@...il.com>
Link: https://lore.kernel.org/r/20220909141338.19343-1-namcaov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/staging/vt6655/device_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index c1f9b263129e..18284c427b7e 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -670,7 +670,7 @@ static int device_init_td0_ring(struct vnt_private *priv)
return 0;
err_free_desc:
- while (--i) {
+ while (i--) {
desc = &priv->apTD0Rings[i];
kfree(desc->td_info);
}
--
2.35.1
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