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From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: "Péter Ujfalusi" <peter.ujfalusi@linux.intel.com>,
	"Daniel Baluta" <daniel.baluta@oss.nxp.com>,
	broonie@kernel.org
Cc: alsa-devel@alsa-project.org, kai.vehmanen@linux.intel.com,
	lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
	ranjani.sridharan@linux.intel.com,
	Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>,
	daniel.baluta@nxp.com
Subject: Re: [PATCH v2 10/12] ASoC: SOF: Intel: hda: make sure DAI widget is set up before IPC
Date: Thu, 23 Sep 2021 07:58:36 -0500	[thread overview]
Message-ID: <b90eff84-b56c-7764-a5bb-f1e07db57cc3@linux.intel.com> (raw)
In-Reply-To: <203bf6cd-6407-f01d-52c3-e399d06cb3f6@linux.intel.com>


>> +static struct sof_ipc_dai_config *hda_dai_update_config(struct snd_soc_dapm_widget *w,
>> +							int channel)
>>  {
>> +	struct snd_sof_widget *swidget = w->dobj.private;
>>  	struct sof_ipc_dai_config *config;
>>  	struct snd_sof_dai *sof_dai;
>> -	struct sof_ipc_reply reply;
>> -	int ret = 0;
>>  
>> -	list_for_each_entry(sof_dai, &hda_stream->sdev->dai_list, list) {
>> -		if (!sof_dai->cpu_dai_name)
>> -			continue;
>> +	if (!swidget) {
>> +		dev_err(swidget->scomp->dev, "error: No private data for widget %s\n", w->name);
> 
> NULL pointer dereference, just return NULL without the print. The caller
> is printing anyways.

yes good catch, we need a v3 with the fixes suggested by Peter in
https://github.com/thesofproject/linux/pull/3171/ applied.

WARNING: multiple messages have this Message-ID (diff)
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: "Péter Ujfalusi" <peter.ujfalusi@linux.intel.com>,
	"Daniel Baluta" <daniel.baluta@oss.nxp.com>,
	broonie@kernel.org
Cc: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>,
	alsa-devel@alsa-project.org, kai.vehmanen@linux.intel.com,
	linux-kernel@vger.kernel.org, ranjani.sridharan@linux.intel.com,
	lgirdwood@gmail.com, daniel.baluta@nxp.com
Subject: Re: [PATCH v2 10/12] ASoC: SOF: Intel: hda: make sure DAI widget is set up before IPC
Date: Thu, 23 Sep 2021 07:58:36 -0500	[thread overview]
Message-ID: <b90eff84-b56c-7764-a5bb-f1e07db57cc3@linux.intel.com> (raw)
In-Reply-To: <203bf6cd-6407-f01d-52c3-e399d06cb3f6@linux.intel.com>


>> +static struct sof_ipc_dai_config *hda_dai_update_config(struct snd_soc_dapm_widget *w,
>> +							int channel)
>>  {
>> +	struct snd_sof_widget *swidget = w->dobj.private;
>>  	struct sof_ipc_dai_config *config;
>>  	struct snd_sof_dai *sof_dai;
>> -	struct sof_ipc_reply reply;
>> -	int ret = 0;
>>  
>> -	list_for_each_entry(sof_dai, &hda_stream->sdev->dai_list, list) {
>> -		if (!sof_dai->cpu_dai_name)
>> -			continue;
>> +	if (!swidget) {
>> +		dev_err(swidget->scomp->dev, "error: No private data for widget %s\n", w->name);
> 
> NULL pointer dereference, just return NULL without the print. The caller
> is printing anyways.

yes good catch, we need a v3 with the fixes suggested by Peter in
https://github.com/thesofproject/linux/pull/3171/ applied.

  reply	other threads:[~2021-09-23 12:58 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-17 14:36 [PATCH v2 00/12] Add support for on demand pipeline setup/destroy Daniel Baluta
2021-09-17 14:36 ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 01/12] ASoC: topology: change the complete op in snd_soc_tplg_ops to return int Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 02/12] ASoC: SOF: control: Add access field in struct snd_sof_control Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 03/12] ASoC: SOF: topology: Add new token for dynamic pipeline Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 04/12] ASoC: SOF: sof-audio: add helpers for widgets, kcontrols and dai config set up Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 05/12] AsoC: dapm: export a couple of functions Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 06/12] ASoC: SOF: Add new fields to snd_sof_route Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 07/12] ASoC: SOF: restore kcontrols for widget during set up Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 08/12] ASoC: SOF: Don't set up widgets during topology parsing Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 09/12] ASoC: SOF: Introduce widget use_count Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 10/12] ASoC: SOF: Intel: hda: make sure DAI widget is set up before IPC Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-23 12:54   ` Péter Ujfalusi
2021-09-23 12:58     ` Pierre-Louis Bossart [this message]
2021-09-23 12:58       ` Pierre-Louis Bossart
2021-09-23 13:00       ` Péter Ujfalusi
2021-09-23 13:00         ` Péter Ujfalusi
2021-09-24  7:42         ` Daniel Baluta
2021-09-24  7:42           ` Daniel Baluta
2021-09-27  9:09           ` Péter Ujfalusi
2021-09-27  9:09             ` Péter Ujfalusi
2021-09-17 14:36 ` [PATCH v2 11/12] ASoC: SOF: Add support for dynamic pipelines Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta
2021-09-17 14:36 ` [PATCH v2 12/12] ASoC: SOF: topology: Add kernel parameter for topology verification Daniel Baluta
2021-09-17 14:36   ` Daniel Baluta

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