On Mon, 11 Mar 2019 21:53:57 +0100, Mariusz Ceier wrote: > > 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> Applied now (with a proper Fixes tag). thanks, Takashi > --- > 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
