diff options
| author | Zeng Heng <zengheng4@huawei.com> | 2022-11-14 16:56:29 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-14 10:15:29 +0100 |
| commit | 21a1409e8cf73053b54f7860548e3043dfa351a9 (patch) | |
| tree | bb8ee5fd355bed74cb701bb5edb9b9bfaeb01bd7 /sound | |
| parent | 698bbaf0b4ed93321c205a026fc8262b8b3264d5 (diff) | |
ASoC: pxa: fix null-pointer dereference in filter()
[ Upstream commit ec7bf231aaa1bdbcb69d23bc50c753c80fb22429 ]
kasprintf() would return NULL pointer when kmalloc() fail to allocate.
Need to check the return pointer before calling strcmp().
Fixes: 7a824e214e25 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/pxa/mmp-pcm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/pxa/mmp-pcm.c b/sound/soc/pxa/mmp-pcm.c index 53fc49e32fbc..0791737c3bf3 100644 --- a/sound/soc/pxa/mmp-pcm.c +++ b/sound/soc/pxa/mmp-pcm.c @@ -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; } |