| Message ID | 20221114085629.1910435-1-zengheng4@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ASoC: pxa: fix null-pointer dereference in filter() | expand |
On Mon, 14 Nov 2022 16:56:29 +0800, Zeng Heng wrote: > kasprintf() would return NULL pointer when kmalloc() fail to allocate. > Need to check the return pointer before calling strcmp(). > > Applied to broonie/sound.git for-next Thanks! [1/1] ASoC: pxa: fix null-pointer dereference in filter() commit: ec7bf231aaa1bdbcb69d23bc50c753c80fb22429 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
diff --git a/sound/soc/pxa/mmp-pcm.c b/sound/soc/pxa/mmp-pcm.c index 5d520e18e512..99b245e3079a 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; }
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> --- sound/soc/pxa/mmp-pcm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)