Re: [PATCH] ASoC: topology: Add missing memory checks

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On 3/21/2020 1:18 AM, Ranjani Sridharan wrote:

(...)

  	if (pcm->compress)
@@ -1835,11 +1849,7 @@ static int soc_tplg_dai_create(struct soc_tplg
*tplg,
  	ret = soc_tplg_dai_load(tplg, dai_drv, pcm, NULL);
  	if (ret < 0) {
  		dev_err(tplg->comp->dev, "ASoC: DAI loading failed\n");
-		kfree(dai_drv->playback.stream_name);
-		kfree(dai_drv->capture.stream_name);
-		kfree(dai_drv->name);
-		kfree(dai_drv);
-		return ret;
+		goto err;
  	}
dai_drv->dobj.index = tplg->index;
@@ -1857,9 +1867,17 @@ static int soc_tplg_dai_create(struct soc_tplg
*tplg,
  	if (ret != 0) {
  		dev_err(dai->dev, "Failed to create DAI widgets %d\n",
ret);
  		snd_soc_unregister_dai(dai);
-		return ret;
+		goto err;
Hi Amadeusz,

I think this is not needed. Once the dai_drv is added to the dobj_list,
upon a failure here, the tplg components will be removed and this will
be taken care of. So it is safe to just return ret here.

Hi,
you are right will do in v2.

(...)
if (d->capture) {
  		stream = &dai_drv->capture;
  		caps = &d->caps[SND_SOC_TPLG_STREAM_CAPTURE];
-		set_stream_info(stream, caps);
+		ret = set_stream_info(stream, caps);
+		if (ret < 0)
+			goto err;
  	}
if (d->flag_mask)
@@ -2454,10 +2485,16 @@ static int soc_tplg_dai_config(struct
soc_tplg *tplg,
The return value of soc_tplg_dai_config() in soc_tplg_dai_elems_load()
is never checked. So maybe we need a follow-up patch to fix that too?


Yes, actually there is few more functions where status is not checked, will add checks for them too.

Amadeusz



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