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From:   Jorge Lopez <jorgealtxwork@gmail.com>
To:     hdegoede@redhat.com, platform-driver-x86@vger.kernel.org,
        linux-kernel@vger.kernel.org, thomas@t-8ch.de,
        ilpo.jarvinen@linux.intel.com
Subject: [PATCH 1/5] hp-bioscfg: Fix memory leaks in string_elements_from_package()
Date:   Tue, 25 Jul 2023 17:00:52 -0500
Message-Id: <20230725220056.25560-2-jorge.lopez2@hp.com>
In-Reply-To: <20230725220056.25560-1-jorge.lopez2@hp.com>
References: <20230725220056.25560-1-jorge.lopez2@hp.com>
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Address memory leaks in hp_populate_string_elements_from_package()
and uninitialized variable errors.

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

---
Based on the latest platform-drivers-x86.git/for-next
---
 drivers/platform/x86/hp/hp-bioscfg/string-attributes.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/hp/hp-bioscfg/string-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/string-attributes.c
index 1b62e372fb9e..e0ecdfca4def 100644
--- a/drivers/platform/x86/hp/hp-bioscfg/string-attributes.c
+++ b/drivers/platform/x86/hp/hp-bioscfg/string-attributes.c
@@ -133,7 +133,7 @@ static int hp_populate_string_elements_from_package(union acpi_object *string_ob
 	char *str_value = NULL;
 	int value_len;
 	int ret = 0;
-	u32 int_value;
+	u32 int_value = 0;
 	int elem;
 	int reqs;
 	int eloc;
@@ -171,6 +171,7 @@ static int hp_populate_string_elements_from_package(union acpi_object *string_ob
 		if (expected_string_types[eloc] != string_obj[elem].type) {
 			pr_err("Error expected type %d for elem %d, but got type %d instead\n",
 			       expected_string_types[eloc], elem, string_obj[elem].type);
+			kfree(str_value);
 			return -EIO;
 		}
 
@@ -232,6 +233,7 @@ static int hp_populate_string_elements_from_package(union acpi_object *string_ob
 					str_value,
 					sizeof(string_data->common.prerequisites[reqs]));
 				kfree(str_value);
+				str_value = NULL;
 			}
 			break;
 
@@ -250,6 +252,7 @@ static int hp_populate_string_elements_from_package(union acpi_object *string_ob
 		}
 
 		kfree(str_value);
+		str_value = NULL;
 	}
 
 exit_string_package:
-- 
2.34.1