For ca0132 codec, azx_dev->stream is NULL during firmware loading. Calling snd_hdac_get_stream_stripe_ctl unconditionally causes NULL pointer dereference in that function. Signed-off-by: Mariusz Ceier <mceier+kernel@xxxxxxxxx> --- sound/hda/hdac_stream.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c index f5dd288d1a7a..76e9b41fcea2 100644 --- a/sound/hda/hdac_stream.c +++ b/sound/hda/hdac_stream.c @@ -95,7 +95,10 @@ void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start) 1 << azx_dev->index, 1 << azx_dev->index); /* set stripe control */ - stripe_ctl = snd_hdac_get_stream_stripe_ctl(bus, azx_dev->substream); + if (azx_dev->substream) + stripe_ctl = snd_hdac_get_stream_stripe_ctl(bus, azx_dev->substream); + else + stripe_ctl = 0; snd_hdac_stream_updateb(azx_dev, SD_CTL_3B, SD_CTL_STRIPE_MASK, stripe_ctl); /* set DMA start and interrupt mask */ -- 2.21.0 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
