Dynamic memory referenced by runtime->private_data pointer is allocated in acp_pdm_dma_open() and needs to be freed in the corresponding ->close() callback.
Found by Linux Verification Center (linuxtesting.org).
Fixes: 4a767b1d039a ("ASoC: amd: add acp3x pdm driver dma ops") Cc: stable@vger.kernel.org Signed-off-by: Fedor Pchelkin pchelkin@ispras.ru --- sound/soc/amd/renoir/acp3x-pdm-dma.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/sound/soc/amd/renoir/acp3x-pdm-dma.c b/sound/soc/amd/renoir/acp3x-pdm-dma.c index 95ac8c680037..6b294040e164 100644 --- a/sound/soc/amd/renoir/acp3x-pdm-dma.c +++ b/sound/soc/amd/renoir/acp3x-pdm-dma.c @@ -301,9 +301,11 @@ static int acp_pdm_dma_close(struct snd_soc_component *component, struct snd_pcm_substream *substream) { struct pdm_dev_data *adata = dev_get_drvdata(component->dev); + struct snd_pcm_runtime *runtime = substream->runtime;
disable_pdm_interrupts(adata->acp_base); adata->capture_stream = NULL; + kfree(runtime->private_data); return 0; }