diff mbox series

[wireless,07/17] wifi: iwlwifi: mld: avoid memory leak if mcc_init fails

Message ID 20250423084826.d07469f866ac.I84ad2e624ce7cd4a661c73b4942186e50cdf82b2@changeid
State New
Headers show
Series wifi: iwlwifi: updates - 2025-04-23 | expand

Commit Message

Miri Korenblit April 23, 2025, 5:50 a.m. UTC 
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 <miriam.rachel.korenblit@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
---
 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 mbox series

Patch

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();