Applied "ASoC: hdac_hdmi: fix possible NULL dereference" to the asoc tree

Message ID E1a0sG6-0007Up-6v@debutante
State New
Headers show

Commit Message

Mark Brown Nov. 23, 2015, 2:38 p.m.
The patch

   ASoC: hdac_hdmi: fix possible NULL dereference

has been applied to the asoc tree at


All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

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From 8d33ab24242c5ce2f8e4add8c04d5409e36a330c Mon Sep 17 00:00:00 2001
From: Sudip Mukherjee <>

Date: Mon, 23 Nov 2015 17:45:13 +0530
Subject: [PATCH] ASoC: hdac_hdmi: fix possible NULL dereference

kzalloc() can return NULL if it fails, and then we will be dereferencing
a NULL pointer.

Signed-off-by: Sudip Mukherjee <>

Signed-off-by: Mark Brown <>

 sound/soc/codecs/hdac_hdmi.c | 2 ++
 1 file changed, 2 insertions(+)


Alsa-devel mailing list


diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index d1552620257f..205f2c27263d 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);