[alsa-devel] [PATCH] ASoC: SOF: topology: free kcontrol memory on error
From: Dragos Tarcatu dragos_tarcatu@mentor.com
The volume and bytes kcontrols are currently not freeing their memory on initialization failures. When an error occurs, all the widgets loaded so far are unloaded via sof_widget_unload(). But this only happens for the widgets that got successfully loaded.
Fix that by kfree()-ing the allocated memory on load error.
Fixes: 311ce4fe7637d ("ASoC: SOF: Add support for loading topologies") Reviewed-by: Paul Olaru paul.olaru@nxp.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Signed-off-by: Dragos Tarcatu dragos_tarcatu@mentor.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/sof/topology.c | 67 +++++++++++++++++++++++++++++----------- 1 file changed, 49 insertions(+), 18 deletions(-)
diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c index 6096731e89ce..d82ab981e840 100644 --- a/sound/soc/sof/topology.c +++ b/sound/soc/sof/topology.c @@ -942,18 +942,22 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, struct sof_ipc_ctrl_data *cdata; int tlv[TLV_ITEMS]; unsigned int i; - int ret; + int ret = 0;
/* validate topology data */ - if (le32_to_cpu(mc->num_channels) > SND_SOC_TPLG_MAX_CHAN) - return -EINVAL; + if (le32_to_cpu(mc->num_channels) > SND_SOC_TPLG_MAX_CHAN) { + ret = -EINVAL; + goto out; + }
/* init the volume get/put data */ scontrol->size = struct_size(scontrol->control_data, chanv, le32_to_cpu(mc->num_channels)); scontrol->control_data = kzalloc(scontrol->size, GFP_KERNEL); - if (!scontrol->control_data) - return -ENOMEM; + if (!scontrol->control_data) { + ret = -ENOMEM; + goto out; + }
scontrol->comp_id = sdev->next_comp_id; scontrol->min_volume_step = le32_to_cpu(mc->min); @@ -963,7 +967,7 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, /* set cmd for mixer control */ if (le32_to_cpu(mc->max) == 1) { scontrol->cmd = SOF_CTRL_CMD_SWITCH; - goto out; + goto skip; }
scontrol->cmd = SOF_CTRL_CMD_VOLUME; @@ -971,14 +975,15 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, /* extract tlv data */ if (get_tlv_data(kc->tlv.p, tlv) < 0) { dev_err(sdev->dev, "error: invalid TLV data\n"); - return -EINVAL; + ret = -EINVAL; + goto out_free; }
/* set up volume table */ ret = set_up_volume_table(scontrol, tlv, le32_to_cpu(mc->max) + 1); if (ret < 0) { dev_err(sdev->dev, "error: setting up volume table\n"); - return ret; + goto out_free; }
/* set default volume values to 0dB in control */ @@ -988,7 +993,7 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, cdata->chanv[i].value = VOL_ZERO_DB; }
-out: +skip: /* set up possible led control from mixer private data */ ret = sof_parse_tokens(scomp, &scontrol->led_ctl, led_tokens, ARRAY_SIZE(led_tokens), mc->priv.array, @@ -996,13 +1001,21 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, if (ret != 0) { dev_err(sdev->dev, "error: parse led tokens failed %d\n", le32_to_cpu(mc->priv.size)); - return ret; + goto out_free_table; }
dev_dbg(sdev->dev, "tplg: load kcontrol index %d chans %d\n", scontrol->comp_id, scontrol->num_channels);
- return 0; + return ret; + +out_free_table: + if (le32_to_cpu(mc->max) > 1) + kfree(scontrol->volume_table); +out_free: + kfree(scontrol->control_data); +out: + return ret; }
static int sof_control_load_enum(struct snd_soc_component *scomp, @@ -1047,6 +1060,7 @@ static int sof_control_load_bytes(struct snd_soc_component *scomp, container_of(hdr, struct snd_soc_tplg_bytes_control, hdr); struct soc_bytes_ext *sbe = (struct soc_bytes_ext *)kc->private_value; int max_size = sbe->max; + int ret = 0;
/* init the get/put bytes data */ scontrol->size = sizeof(struct sof_ipc_ctrl_data) + @@ -1055,13 +1069,16 @@ static int sof_control_load_bytes(struct snd_soc_component *scomp, if (scontrol->size > max_size) { dev_err(sdev->dev, "err: bytes data size %d exceeds max %d.\n", scontrol->size, max_size); - return -EINVAL; + ret = -EINVAL; + goto out; }
scontrol->control_data = kzalloc(max_size, GFP_KERNEL); cdata = scontrol->control_data; - if (!scontrol->control_data) - return -ENOMEM; + if (!scontrol->control_data) { + ret = -ENOMEM; + goto out; + }
scontrol->comp_id = sdev->next_comp_id; scontrol->cmd = SOF_CTRL_CMD_BINARY; @@ -1076,23 +1093,32 @@ static int sof_control_load_bytes(struct snd_soc_component *scomp, if (cdata->data->magic != SOF_ABI_MAGIC) { dev_err(sdev->dev, "error: Wrong ABI magic 0x%08x.\n", cdata->data->magic); - return -EINVAL; + ret = -EINVAL; + goto out_free; } if (SOF_ABI_VERSION_INCOMPATIBLE(SOF_ABI_VERSION, cdata->data->abi)) { dev_err(sdev->dev, "error: Incompatible ABI version 0x%08x.\n", cdata->data->abi); - return -EINVAL; + ret = -EINVAL; + goto out_free; } if (cdata->data->size + sizeof(const struct sof_abi_hdr) != le32_to_cpu(control->priv.size)) { dev_err(sdev->dev, "error: Conflict in bytes vs. priv size.\n"); - return -EINVAL; + ret = -EINVAL; + goto out_free; } } - return 0; + + return ret; + +out_free: + kfree(scontrol->control_data); +out: + return ret; }
/* external kcontrol init - used for any driver specific init */ @@ -1150,6 +1176,11 @@ static int sof_control_load(struct snd_soc_component *scomp, int index, return 0; }
+ if (ret < 0) { + kfree(scontrol); + return ret; + } + dobj->private = scontrol; list_add(&scontrol->list, &sdev->kcontrol_list); return ret;
The patch
ASoC: SOF: topology: free kcontrol memory on error
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.5
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
From 1b4efdaf6d6053c8944cee0edba0969dc1be7d4b Mon Sep 17 00:00:00 2001
From: Dragos Tarcatu dragos_tarcatu@mentor.com Date: Mon, 11 Nov 2019 16:20:38 -0600 Subject: [PATCH] ASoC: SOF: topology: free kcontrol memory on error
The volume and bytes kcontrols are currently not freeing their memory on initialization failures. When an error occurs, all the widgets loaded so far are unloaded via sof_widget_unload(). But this only happens for the widgets that got successfully loaded.
Fix that by kfree()-ing the allocated memory on load error.
Fixes: 311ce4fe7637d ("ASoC: SOF: Add support for loading topologies") Reviewed-by: Paul Olaru paul.olaru@nxp.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Signed-off-by: Dragos Tarcatu dragos_tarcatu@mentor.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Link: https://lore.kernel.org/r/20191111222039.19651-1-pierre-louis.bossart@linux.... Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/sof/topology.c | 67 +++++++++++++++++++++++++++++----------- 1 file changed, 49 insertions(+), 18 deletions(-)
diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c index 6096731e89ce..d82ab981e840 100644 --- a/sound/soc/sof/topology.c +++ b/sound/soc/sof/topology.c @@ -942,18 +942,22 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, struct sof_ipc_ctrl_data *cdata; int tlv[TLV_ITEMS]; unsigned int i; - int ret; + int ret = 0;
/* validate topology data */ - if (le32_to_cpu(mc->num_channels) > SND_SOC_TPLG_MAX_CHAN) - return -EINVAL; + if (le32_to_cpu(mc->num_channels) > SND_SOC_TPLG_MAX_CHAN) { + ret = -EINVAL; + goto out; + }
/* init the volume get/put data */ scontrol->size = struct_size(scontrol->control_data, chanv, le32_to_cpu(mc->num_channels)); scontrol->control_data = kzalloc(scontrol->size, GFP_KERNEL); - if (!scontrol->control_data) - return -ENOMEM; + if (!scontrol->control_data) { + ret = -ENOMEM; + goto out; + }
scontrol->comp_id = sdev->next_comp_id; scontrol->min_volume_step = le32_to_cpu(mc->min); @@ -963,7 +967,7 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, /* set cmd for mixer control */ if (le32_to_cpu(mc->max) == 1) { scontrol->cmd = SOF_CTRL_CMD_SWITCH; - goto out; + goto skip; }
scontrol->cmd = SOF_CTRL_CMD_VOLUME; @@ -971,14 +975,15 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, /* extract tlv data */ if (get_tlv_data(kc->tlv.p, tlv) < 0) { dev_err(sdev->dev, "error: invalid TLV data\n"); - return -EINVAL; + ret = -EINVAL; + goto out_free; }
/* set up volume table */ ret = set_up_volume_table(scontrol, tlv, le32_to_cpu(mc->max) + 1); if (ret < 0) { dev_err(sdev->dev, "error: setting up volume table\n"); - return ret; + goto out_free; }
/* set default volume values to 0dB in control */ @@ -988,7 +993,7 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, cdata->chanv[i].value = VOL_ZERO_DB; }
-out: +skip: /* set up possible led control from mixer private data */ ret = sof_parse_tokens(scomp, &scontrol->led_ctl, led_tokens, ARRAY_SIZE(led_tokens), mc->priv.array, @@ -996,13 +1001,21 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, if (ret != 0) { dev_err(sdev->dev, "error: parse led tokens failed %d\n", le32_to_cpu(mc->priv.size)); - return ret; + goto out_free_table; }
dev_dbg(sdev->dev, "tplg: load kcontrol index %d chans %d\n", scontrol->comp_id, scontrol->num_channels);
- return 0; + return ret; + +out_free_table: + if (le32_to_cpu(mc->max) > 1) + kfree(scontrol->volume_table); +out_free: + kfree(scontrol->control_data); +out: + return ret; }
static int sof_control_load_enum(struct snd_soc_component *scomp, @@ -1047,6 +1060,7 @@ static int sof_control_load_bytes(struct snd_soc_component *scomp, container_of(hdr, struct snd_soc_tplg_bytes_control, hdr); struct soc_bytes_ext *sbe = (struct soc_bytes_ext *)kc->private_value; int max_size = sbe->max; + int ret = 0;
/* init the get/put bytes data */ scontrol->size = sizeof(struct sof_ipc_ctrl_data) + @@ -1055,13 +1069,16 @@ static int sof_control_load_bytes(struct snd_soc_component *scomp, if (scontrol->size > max_size) { dev_err(sdev->dev, "err: bytes data size %d exceeds max %d.\n", scontrol->size, max_size); - return -EINVAL; + ret = -EINVAL; + goto out; }
scontrol->control_data = kzalloc(max_size, GFP_KERNEL); cdata = scontrol->control_data; - if (!scontrol->control_data) - return -ENOMEM; + if (!scontrol->control_data) { + ret = -ENOMEM; + goto out; + }
scontrol->comp_id = sdev->next_comp_id; scontrol->cmd = SOF_CTRL_CMD_BINARY; @@ -1076,23 +1093,32 @@ static int sof_control_load_bytes(struct snd_soc_component *scomp, if (cdata->data->magic != SOF_ABI_MAGIC) { dev_err(sdev->dev, "error: Wrong ABI magic 0x%08x.\n", cdata->data->magic); - return -EINVAL; + ret = -EINVAL; + goto out_free; } if (SOF_ABI_VERSION_INCOMPATIBLE(SOF_ABI_VERSION, cdata->data->abi)) { dev_err(sdev->dev, "error: Incompatible ABI version 0x%08x.\n", cdata->data->abi); - return -EINVAL; + ret = -EINVAL; + goto out_free; } if (cdata->data->size + sizeof(const struct sof_abi_hdr) != le32_to_cpu(control->priv.size)) { dev_err(sdev->dev, "error: Conflict in bytes vs. priv size.\n"); - return -EINVAL; + ret = -EINVAL; + goto out_free; } } - return 0; + + return ret; + +out_free: + kfree(scontrol->control_data); +out: + return ret; }
/* external kcontrol init - used for any driver specific init */ @@ -1150,6 +1176,11 @@ static int sof_control_load(struct snd_soc_component *scomp, int index, return 0; }
+ if (ret < 0) { + kfree(scontrol); + return ret; + } + dobj->private = scontrol; list_add(&scontrol->list, &sdev->kcontrol_list); return ret;
participants (2)
-
Mark Brown -
Pierre-Louis Bossart