From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: 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>
Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH] ASoC: rt5514-spi: Fix potential NULL pointer dereference
Date: Tue, 15 Jan 2019 11:57:23 -0600 [thread overview]
Message-ID: <20190115175723.GA32176@embeddedor> (raw)
There is a potential NULL pointer dereference in case devm_kzalloc()
fails and returns NULL.
Fix this by adding a NULL check on rt5514_dsp.
This issue was detected with the help of Coccinelle.
Fixes: 6eebf35b0e4a ("ASoC: rt5514: add rt5514 SPI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
sound/soc/codecs/rt5514-spi.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c
index 4d46f4567c3a..bec2eefa8b0f 100644
--- a/sound/soc/codecs/rt5514-spi.c
+++ b/sound/soc/codecs/rt5514-spi.c
@@ -280,6 +280,8 @@ static int rt5514_spi_pcm_probe(struct snd_soc_component *component)
rt5514_dsp = devm_kzalloc(component->dev, sizeof(*rt5514_dsp),
GFP_KERNEL);
+ if (!rt5514_dsp)
+ return -ENOMEM;
rt5514_dsp->dev = &rt5514_spi->dev;
mutex_init(&rt5514_dsp->dma_lock);
--
2.20.1
next reply other threads:[~2019-01-15 17:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-15 17:57 Gustavo A. R. Silva [this message]
2019-01-15 19:08 ` Applied "ASoC: rt5514-spi: Fix potential NULL pointer dereference" to the asoc tree Mark Brown
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