From: Kangjie Lu <kjlu@umn.edu>
To: kjlu@umn.edu
Cc: pakki001@umn.edu, Bard Liao <bardliao@realtek.com>,
Oder Chiou <oder_chiou@realtek.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
Takashi Iwai <tiwai@suse.com>,
alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Subject: [PATCH] sound: codecs: fix a potential NULL pointer dereference
Date: Sun, 24 Mar 2019 18:12:37 -0500 [thread overview]
Message-ID: <20190324231237.2246-1-kjlu@umn.edu> (raw)
In case devm_kzalloc fails, the patch returns -ENOMEM to avoid
potential NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
---
sound/soc/codecs/rt5663.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/soc/codecs/rt5663.c b/sound/soc/codecs/rt5663.c
index da6647015708..909ab99a1995 100644
--- a/sound/soc/codecs/rt5663.c
+++ b/sound/soc/codecs/rt5663.c
@@ -3480,6 +3480,8 @@ static int rt5663_parse_dp(struct rt5663_priv *rt5663, struct device *dev)
table_size = sizeof(struct impedance_mapping_table) *
rt5663->pdata.impedance_sensing_num;
rt5663->imp_table = devm_kzalloc(dev, table_size, GFP_KERNEL);
+ if (!rt5663->imp_table)
+ return -ENOMEM;
device_property_read_u32_array(dev,
"realtek,impedance_sensing_table",
(u32 *)rt5663->imp_table, table_size);
--
2.17.1
next reply other threads:[~2019-03-24 23:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-24 23:12 Kangjie Lu [this message]
2019-03-25 6:45 ` Mukesh Ojha
2019-03-25 6:54 ` Mukesh Ojha
2019-03-25 21:19 ` [PATCH v2] " Kangjie Lu
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