usi@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/sof/ipc4-topology.c | 35 +++++++++++++++++++++++++++-------- 1 file changed, 27 insertions(+), 8 deletions(-) diff --git a/sound/soc/sof/ipc4-topology.c b/sound/soc/sof/ipc4-topology.c index d621e7914a73c..4854903654364 100644 --- a/sound/soc/sof/ipc4-topology.c +++ b/sound/soc/sof/ipc4-topology.c @@ -2870,22 +2870,41 @@ static int sof_ipc4_control_load_bytes(struct snd_sof_dev *sdev, struct snd_sof_ struct sof_ipc4_msg *msg; int ret; - if (scontrol->max_size < (sizeof(*control_data) + sizeof(struct sof_abi_hdr))) { - dev_err(sdev->dev, "insufficient size for a bytes control %s: %zu.\n", + /* + * The max_size is coming from topology and indicates the maximum size + * of sof_abi_hdr plus the payload, which excludes the local only + * 'struct sof_ipc4_control_data' + */ + if (scontrol->max_size < sizeof(struct sof_abi_hdr)) { + dev_err(sdev->dev, + "insufficient maximum size for a bytes control %s: %zu.\n", scontrol->name, scontrol->max_size); return -EINVAL; } - if (scontrol->priv_size > scontrol->max_size - sizeof(*control_data)) { - dev_err(sdev->dev, "scontrol %s bytes data size %zu exceeds max %zu.\n", - scontrol->name, scontrol->priv_size, - scontrol->max_size - sizeof(*control_data)); + if (scontrol->priv_size > scontrol->max_size) { + dev_err(sdev->dev, + "bytes control %s initial data size %zu exceeds max %zu.\n", + scontrol->name, scontrol->priv_size, scontrol->max_size); + return -EINVAL; + } + + if (scontrol->priv_size < sizeof(struct sof_abi_hdr)) { + dev_err(sdev->dev, + "bytes control %s initial data size %zu is insufficient.\n", + scontrol->name, scontrol->priv_size); return -EINVAL; } - scontrol->size = sizeof(struct sof_ipc4_control_data) + scontrol->priv_size; + /* + * The used size behind the cdata pointer, which can be smaller than + * the maximum size + */ + scontrol->size = sizeof(*control_data) + scontrol->priv_size; - scontrol->ipc_control_data = kzalloc(scontrol->max_size, GFP_KERNEL); + /* Allocate the cdata: local struct size + maximum payload size */ + scontrol->ipc_control_data = kzalloc(sizeof(*control_data) + scontrol->max_size, + GFP_KERNEL); if (!scontrol->ipc_control_data) return -ENOMEM; -- 2.51.0[PATCH 6.19 514/844] ASoC: SOF: ipc4-topology: Correct the allocation size for bytes controlsSasha Levin undefinedlinux-kernel@vger.kernel.org, stable@vger.kernel.org undefined undefined undefined undefined undefined undefined undefined undefinedŤu†¨b