[alsa-devel] [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 sudip@vectorindia.org --- sound/soc/codecs/hdac_hdmi.c | 2 ++ 1 file changed, 2 insertions(+)

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);