The patch
ASoC: topology: kfree kcontrol->private_value before freeing kcontrol
has been applied to the asoc tree at
git://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.
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Thanks, Mark
From c2b36129ce53a22b89dd2b88db33e7ffdefe0f41 Mon Sep 17 00:00:00 2001
From: Colin Ian King colin.king@canonical.com Date: Fri, 9 Dec 2016 14:17:47 +0000 Subject: [PATCH] ASoC: topology: kfree kcontrol->private_value before freeing kcontrol
kcontrol->private_value is being kfree'd after kcontrol has been freed (in previous call to snd_ctl_remove). Instead, fix this by kfreeing the private_value before kcontrol.
CoverityScan CID#1388311 "Read from pointer after free"
Fixes: eea3dd4f1247a ("ASoC: topology: Only free TLV for volume mixers of a widget") Signed-off-by: Colin Ian King colin.king@canonical.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/soc-topology.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index 65670b2b408c..fbfb1fab88d5 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -514,13 +514,12 @@ static void remove_widget(struct snd_soc_component *comp, == SND_SOC_TPLG_TYPE_MIXER) kfree(kcontrol->tlv.p);
- snd_ctl_remove(card, kcontrol); - /* Private value is used as struct soc_mixer_control * for volume mixers or soc_bytes_ext for bytes * controls. */ kfree((void *)kcontrol->private_value); + snd_ctl_remove(card, kcontrol); } kfree(w->kcontrol_news); }