From f8e066521192c7debe59127d90abbe2773577e25 Mon Sep 17 00:00:00 2001 From: Pankaj Bharadiya Date: Tue, 7 Nov 2017 16:16:19 +0530 Subject: [PATCH] ASoC: Intel: Skylake: Fix uuid_module memory leak in failure case In the loop that adds the uuid_module to the uuid_list list, allocated memory is not properly freed in the error path free uuid_list whenever any of the memory allocation in the loop fails to avoid memory leak. Signed-off-by: Pankaj Bharadiya Signed-off-by: Guneshwor Singh Acked-By: Vinod Koul Signed-off-by: Mark Brown --- sound/soc/intel/skylake/skl-sst-utils.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/sound/soc/intel/skylake/skl-sst-utils.c b/sound/soc/intel/skylake/skl-sst-utils.c index 369ef7ce..8ff8928 100644 --- a/sound/soc/intel/skylake/skl-sst-utils.c +++ b/sound/soc/intel/skylake/skl-sst-utils.c @@ -251,6 +251,7 @@ int snd_skl_parse_uuids(struct sst_dsp *ctx, const struct firmware *fw, struct uuid_module *module; struct firmware stripped_fw; unsigned int safe_file; + int ret = 0; /* Get the FW pointer to derive ADSP header */ stripped_fw.data = fw->data; @@ -299,8 +300,10 @@ int snd_skl_parse_uuids(struct sst_dsp *ctx, const struct firmware *fw, for (i = 0; i < num_entry; i++, mod_entry++) { module = kzalloc(sizeof(*module), GFP_KERNEL); - if (!module) - return -ENOMEM; + if (!module) { + ret = -ENOMEM; + goto free_uuid_list; + } uuid_bin = (uuid_le *)mod_entry->uuid.id; memcpy(&module->uuid, uuid_bin, sizeof(module->uuid)); @@ -311,8 +314,8 @@ int snd_skl_parse_uuids(struct sst_dsp *ctx, const struct firmware *fw, size = sizeof(int) * mod_entry->instance_max_count; module->instance_id = devm_kzalloc(ctx->dev, size, GFP_KERNEL); if (!module->instance_id) { - kfree(module); - return -ENOMEM; + ret = -ENOMEM; + goto free_uuid_list; } list_add_tail(&module->list, &skl->uuid_list); @@ -323,6 +326,10 @@ int snd_skl_parse_uuids(struct sst_dsp *ctx, const struct firmware *fw, } return 0; + +free_uuid_list: + skl_freeup_uuid_list(skl); + return ret; } void skl_freeup_uuid_list(struct skl_sst *ctx) -- 2.7.4