From: Cristian Ciocaltea cristian.ciocaltea@collabora.com
[ Upstream commit 222be59e5eed1554119294edc743ee548c2371d0 ]
Driver uses kasprintf() to initialize fw_{code,data}_bin members of struct acp_dev_data, but kfree() is never called to deallocate the memory, which results in a memory leak.
Fix the issue by switching to devm_kasprintf(). Additionally, ensure the allocation was successful by checking the pointer validity.
Fixes: f7da88003c53 ("ASoC: SOF: amd: Enable signed firmware image loading for Vangogh platform") Signed-off-by: Cristian Ciocaltea cristian.ciocaltea@collabora.com Reviewed-by: Emil Velikov emil.velikov@collabora.com Link: https://msgid.link/r/20231219030728.2431640-6-cristian.ciocaltea@collabora.c... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/sof/amd/acp.c | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-)
diff --git a/sound/soc/sof/amd/acp.c b/sound/soc/sof/amd/acp.c index 19a801908b56d..4c54ce212de6a 100644 --- a/sound/soc/sof/amd/acp.c +++ b/sound/soc/sof/amd/acp.c @@ -547,17 +547,27 @@ int amd_sof_acp_probe(struct snd_sof_dev *sdev) adata->signed_fw_image = false; dmi_id = dmi_first_match(acp_sof_quirk_table); if (dmi_id && dmi_id->driver_data) { - adata->fw_code_bin = kasprintf(GFP_KERNEL, "%s/sof-%s-code.bin", - plat_data->fw_filename_prefix, - chip->name); - adata->fw_data_bin = kasprintf(GFP_KERNEL, "%s/sof-%s-data.bin", - plat_data->fw_filename_prefix, - chip->name); - adata->signed_fw_image = dmi_id->driver_data; + adata->fw_code_bin = devm_kasprintf(sdev->dev, GFP_KERNEL, + "%s/sof-%s-code.bin", + plat_data->fw_filename_prefix, + chip->name); + if (!adata->fw_code_bin) { + ret = -ENOMEM; + goto free_ipc_irq; + } + + adata->fw_data_bin = devm_kasprintf(sdev->dev, GFP_KERNEL, + "%s/sof-%s-data.bin", + plat_data->fw_filename_prefix, + chip->name); + if (!adata->fw_data_bin) { + ret = -ENOMEM; + goto free_ipc_irq; + }
- dev_dbg(sdev->dev, "fw_code_bin:%s, fw_data_bin:%s\n", adata->fw_code_bin, - adata->fw_data_bin); + adata->signed_fw_image = dmi_id->driver_data; } + adata->enable_fw_debug = enable_fw_debug; acp_memory_init(sdev);