From 092e9ca61f4b77cb2fea72a534c0f5a7a3b6b393 Mon Sep 17 00:00:00 2001 From: Miri Korenblit Date: Wed, 23 Apr 2025 09:16:33 +0300 Subject: [PATCH] wifi: iwlwifi: mld: avoid memory leak if mcc_init fails allocating mld->nvm_data used to be the last thing done in iwl_mld_load_fw, so there was no need to free on any error path of iwl_mld_load_fw. But now iwl_mld_load_fw also calls iwl_mld_init_mcc, that can fail, after allocating nvm->data. In that case, it is not freed. As allocating the NVM data should only be done at op mode start anyway, simply move it to there, where it is already freed in the right error paths. Signed-off-by: Miri Korenblit Reviewed-by: Johannes Berg Link: https://patch.msgid.link/20250423091408.d07469f866ac.I84ad2e624ce7cd4a661c73b4942186e50cdf82b2@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/mld/fw.c | 11 ----------- drivers/net/wireless/intel/iwlwifi/mld/mld.c | 10 ++++++++++ 2 files changed, 10 insertions(+), 11 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mld/fw.c b/drivers/net/wireless/intel/iwlwifi/mld/fw.c index 62da137e1024..77cc8e4bb498 100644 --- a/drivers/net/wireless/intel/iwlwifi/mld/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mld/fw.c @@ -11,7 +11,6 @@ #include "fw/dbg.h" #include "fw/pnvm.h" #include "hcmd.h" -#include "iwl-nvm-parse.h" #include "power.h" #include "mcc.h" #include "led.h" @@ -308,16 +307,6 @@ static int iwl_mld_run_fw_init_sequence(struct iwl_mld *mld) goto init_failure; } - if (!mld->nvm_data) { - mld->nvm_data = iwl_get_nvm(mld->trans, mld->fw, 0, 0); - if (IS_ERR(mld->nvm_data)) { - ret = PTR_ERR(mld->nvm_data); - mld->nvm_data = NULL; - IWL_ERR(mld, "Failed to read NVM: %d\n", ret); - goto init_failure; - } - } - return 0; init_failure: diff --git a/drivers/net/wireless/intel/iwlwifi/mld/mld.c b/drivers/net/wireless/intel/iwlwifi/mld/mld.c index 367f9738c011..8d788af8dcc8 100644 --- a/drivers/net/wireless/intel/iwlwifi/mld/mld.c +++ b/drivers/net/wireless/intel/iwlwifi/mld/mld.c @@ -26,6 +26,8 @@ #include "hcmd.h" #include "fw/api/location.h" +#include "iwl-nvm-parse.h" + #define DRV_DESCRIPTION "Intel(R) MLD wireless driver for Linux" MODULE_DESCRIPTION(DRV_DESCRIPTION); MODULE_LICENSE("GPL"); @@ -412,6 +414,14 @@ iwl_op_mode_mld_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, break; } + if (!ret) { + mld->nvm_data = iwl_get_nvm(mld->trans, mld->fw, 0, 0); + if (IS_ERR(mld->nvm_data)) { + IWL_ERR(mld, "Failed to read NVM: %d\n", ret); + ret = PTR_ERR(mld->nvm_data); + } + } + if (ret) { wiphy_unlock(mld->wiphy); rtnl_unlock(); -- 2.50.1