linux-kernel - [PATCH 4/5] hp-bioscfg: Fix memory leaks in enumeration_elements_from

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Message-Id: <20230725220056.25560-5-jorge.lopez2@hp.com>
Date:   Tue, 25 Jul 2023 17:00:55 -0500
From:   Jorge Lopez <jorgealtxwork@...il.com>
To:     hdegoede@...hat.com, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org, thomas@...ch.de,
        ilpo.jarvinen@...ux.intel.com
Subject: [PATCH 4/5] hp-bioscfg: Fix memory leaks in enumeration_elements_from_package()

Address memory leaks in hp_populate_enumeration_elements_from_package()
and uninitialized variable errors.

Signed-off-by: Jorge Lopez <jorge.lopez2@...com>

---
Based on the latest platform-drivers-x86.git/for-next
---
 drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c
index b1b241f0205a..7f77963cd7fa 100644
--- a/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c
+++ b/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c
@@ -129,7 +129,7 @@ static int hp_populate_enumeration_elements_from_package(union acpi_object *enum
 	char *str_value = NULL;
 	int value_len;
 	u32 size = 0;
-	u32 int_value;
+	u32 int_value = 0;
 	int elem = 0;
 	int reqs;
 	int pos_values;
@@ -164,6 +164,7 @@ static int hp_populate_enumeration_elements_from_package(union acpi_object *enum
 		if (expected_enum_types[eloc] != enum_obj[elem].type) {
 			pr_err("Error expected type %d for elem %d, but got type %d instead\n",
 			       expected_enum_types[eloc], elem, enum_obj[elem].type);
+			kfree(str_value);
 			return -EIO;
 		}
 
@@ -224,6 +225,7 @@ static int hp_populate_enumeration_elements_from_package(union acpi_object *enum
 					sizeof(enum_data->common.prerequisites[reqs]));
 
 				kfree(str_value);
+				str_value = NULL;
 			}
 			break;
 
@@ -275,6 +277,9 @@ static int hp_populate_enumeration_elements_from_package(union acpi_object *enum
 					strscpy(enum_data->possible_values[pos_values],
 						str_value,
 						sizeof(enum_data->possible_values[pos_values]));
+
+				kfree(str_value);
+				str_value = NULL;
 			}
 			break;
 		default:
@@ -283,6 +288,7 @@ static int hp_populate_enumeration_elements_from_package(union acpi_object *enum
 		}
 
 		kfree(str_value);
+		str_value = NULL;
 	}
 
 exit_enumeration_package:
-- 
2.34.1