4.14-stable review patch. If anyone has any objections, please let me know.
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From: Pankaj Bharadiya pankaj.laxminarayan.bharadiya@intel.com
[ Upstream commit f8e066521192c7debe59127d90abbe2773577e25 ]
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 pankaj.laxminarayan.bharadiya@intel.com Signed-off-by: Guneshwor Singh guneshwor.o.singh@intel.com Acked-By: Vinod Koul vinod.koul@intel.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- sound/soc/intel/skylake/skl-sst-utils.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
--- 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 * 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 *
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 * 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 * }
return 0; + +free_uuid_list: + skl_freeup_uuid_list(skl); + return ret; }
void skl_freeup_uuid_list(struct skl_sst *ctx)