The patch
ASoC: topology: Check widget kcontrols before deref
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
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.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From f53c4c20d6d38bcefd89bfcab135486cbb797884 Mon Sep 17 00:00:00 2001
From: Liam Girdwood liam.r.girdwood@linux.intel.com Date: Tue, 27 Mar 2018 14:30:44 +0100 Subject: [PATCH] ASoC: topology: Check widget kcontrols before deref
Validate the topology input before we dereference the pointer.
Signed-off-by: Liam Girdwood liam.r.girdwood@linux.intel.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/soc-topology.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index 5598e891b2b3..986b8b2f90fb 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -513,7 +513,7 @@ static void remove_widget(struct snd_soc_component *comp, */ if (dobj->widget.kcontrol_type == SND_SOC_TPLG_TYPE_ENUM) { /* enumerated widget mixer */ - for (i = 0; i < w->num_kcontrols; i++) { + for (i = 0; w->kcontrols != NULL && i < w->num_kcontrols; i++) { struct snd_kcontrol *kcontrol = w->kcontrols[i]; struct soc_enum *se = (struct soc_enum *)kcontrol->private_value; @@ -530,7 +530,7 @@ static void remove_widget(struct snd_soc_component *comp, } } else { /* volume mixer or bytes controls */ - for (i = 0; i < w->num_kcontrols; i++) { + for (i = 0; w->kcontrols != NULL && i < w->num_kcontrols; i++) { struct snd_kcontrol *kcontrol = w->kcontrols[i];
if (dobj->widget.kcontrol_type