mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-29 05:44:11 +00:00
Code Issues Releases Wiki Activity

ASoC: pxa: fix null-pointer dereference in filter()

Browse source 
kasprintf() would return NULL pointer when kmalloc() fail to allocate.
Need to check the return pointer before calling strcmp().

Fixes: 7a824e214e ("ASoC: mmp: add audio dma support")
Signed-off-by: Zeng Heng <zengheng4@huawei.com>
Link: https://lore.kernel.org/r/20221114085629.1910435-1-zengheng4@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Zeng Heng 2022-11-14 16:56:29 +08:00 committed by Mark Brown
parent 23dab2ec74
commit ec7bf231aa
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
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/pxa/mmp-pcm.c
View file

@ -98,7 +98,7 @@ static bool filter(struct dma_chan *chan, void *param)
devname = kasprintf(GFP_KERNEL, "%s.%d", dma_data->dma_res->name,
dma_data->ssp_id);
if ((strcmp(dev_name(chan->device->dev), devname) == 0) &&
if (devname && (strcmp(dev_name(chan->device->dev), devname) == 0) &&
(chan->chan_id == dma_data->dma_res->start)) {
found = true;
}