4.20-stable review patch. If anyone has any objections, please let me know.
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From: Gustavo A. R. Silva gustavo@embeddedor.com
commit 060d0bf491874daece47053c4e1fb0489eb867d2 upstream.
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 Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- sound/soc/codecs/rt5514-spi.c | 2 ++ 1 file changed, 2 insertions(+)
--- 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 s
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);