From: Markus Elfring <Markus.Elfring@web.de>
To: dri-devel@lists.freedesktop.org, kernel@pengutronix.de,
linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com,
Daniel Vetter <daniel@ffwll.ch>, David Airlie <airlied@linux.ie>,
Fabio Estevam <festevam@gmail.com>,
Philipp Zabel <p.zabel@pengutronix.de>,
Sascha Hauer <s.hauer@pengutronix.de>,
Shawn Guo <shawnguo@kernel.org>,
Navid Emamdoost <navid.emamdoost@gmail.com>,
Peter Senna Tschudin <peter.senna@collabora.com>
Cc: Rob Herring <robh@kernel.org>,
kernel-janitors@vger.kernel.org, Kangjie Lu <kjlu@umn.edu>,
LKML <linux-kernel@vger.kernel.org>,
Thierry Reding <thierry.reding@gmail.com>,
Stephen McCamant <smccaman@umn.edu>,
Navid Emamdoost <emamd001@umn.edu>
Subject: [PATCH 2/2] drm/imx: Fix error handling for a kmemdup() call in imx_ldb_panel_ddc()
Date: Sat, 12 Oct 2019 11:10:07 +0200 [thread overview]
Message-ID: <d35e4483-e310-c5b8-467e-a6a51f49dfef@web.de> (raw)
In-Reply-To: <2abf545b-023b-853a-95ef-ce99e1896a5d@web.de>
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 12 Oct 2019 10:33:47 +0200
The return value from a call of the function “kmemdup” was not checked
in this function implementation. Thus add the corresponding error handling.
This issue was detected by using the Coccinelle software.
Fixes: dc80d7038883feca2abd08975165bc0d83c84762 ("drm/imx-ldb: Add support to drm-bridge")
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/gpu/drm/imx/imx-ldb.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index 208069faf183..801a2265dd11 100644
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -569,6 +569,8 @@ static int imx_ldb_panel_ddc(struct device *dev,
channel->edid = kmemdup(edidp,
channel->edid_len,
GFP_KERNEL);
+ if (!channel->edid)
+ return -ENOMEM;
} else if (!channel->panel) {
/* fallback to display-timings node */
ret = of_get_drm_display_mode(child,
--
2.23.0
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next prev parent reply other threads:[~2019-10-12 9:10 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-04 19:09 [PATCH] drm/imx: fix memory leak in imx_pd_bind Navid Emamdoost
2019-10-05 15:02 ` Markus Elfring
2019-10-12 11:54 ` Markus Elfring
2019-10-12 19:22 ` Navid Emamdoost
2019-10-06 9:33 ` drm/imx: Checking a kmemdup() call in imx_pd_bind() Markus Elfring
2019-10-07 4:26 ` Navid Emamdoost
2019-10-07 7:44 ` Markus Elfring
2019-10-12 9:04 ` [PATCH 0/2] drm/imx: Adjustments for two functions Markus Elfring
2019-10-12 9:07 ` [PATCH 1/2] drm/imx: Fix error handling for a kmemdup() call in imx_pd_bind() Markus Elfring
2019-10-12 19:16 ` Navid Emamdoost
2019-10-12 19:24 ` Julia Lawall
2019-10-12 9:10 ` Markus Elfring [this message]
2019-11-21 18:31 ` [PATCH] drm/imx: fix memory leak in imx_pd_bind Navid Emamdoost
2019-11-22 7:22 ` Marco Felsch
2019-11-22 17:43 ` Navid Emamdoost
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