Piteball/android_kernel_google_msm
1
0
Fork 0
mirror of https://github.com/followmsi/android_kernel_google_msm.git synced 2024-11-06 23:17:41 +00:00
Code Issues Projects Releases Wiki Activity

ASoC: core: fix possible ZERO_SIZE_PTR pointer dereferencing error.

Browse source 
commit 6596aa047b upstream.

Since we cannot make sure the 'params->num_regs' will always be none
zero here, and then if it equals to zero, the kmemdup() will return
ZERO_SIZE_PTR, which equals to ((void *)16).

So this patch fix this with just doing the zero check before calling
kmemdup().

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
This commit is contained in:
Xiubo Li 2014-09-28 17:29:37 +08:00 committed by Zefan Li
parent 3efcfa5433
commit e5b741351f
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
sound/soc/soc-core.c
View file

@ -2799,7 +2799,7 @@ int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
unsigned int val;
void *data;
if (!codec->using_regmap)
if (!codec->using_regmap || !params->num_regs)
return -EINVAL;
data = ucontrol->value.bytes.data;