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ASoC: hdac_hdmi: fix possible NULL dereference

Message ID 1448280913-16061-1-git-send-email-sudipm.mukherjee@gmail.com (mailing list archive)
State Accepted
Commit 8d33ab24242c5ce2f8e4add8c04d5409e36a330c
Headers show

Commit Message

Sudip Mukherjee Nov. 23, 2015, 12:15 p.m. UTC
kzalloc() can return NULL if it fails, and then we will be dereferencing
a NULL pointer.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
---
 sound/soc/codecs/hdac_hdmi.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index d155262..205f2c2 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -200,6 +200,8 @@  static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
 	}
 
 	dd = kzalloc(sizeof(*dd), GFP_KERNEL);
+	if (!dd)
+		return -ENOMEM;
 	dd->format = snd_hdac_calc_stream_format(params_rate(hparams),
 			params_channels(hparams), params_format(hparams),
 			24, 0);