[Patch v2 03/13] PCI, pci-label: release allocated ACPI object on error recovery path

From: Jiang Liu
Date: Thu Dec 19 2013 - 07:43:03 EST


Function dsm_get_label() leaks the returned ACPI object if
obj->package.count is not 2, so fix the possible memory leak.

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
---
drivers/pci/pci-label.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/pci/pci-label.c b/drivers/pci/pci-label.c
index d51f45a..f6e01a5 100644
--- a/drivers/pci/pci-label.c
+++ b/drivers/pci/pci-label.c
@@ -233,11 +233,7 @@ dsm_get_label(acpi_handle handle, int func,
return -1;

obj = (union acpi_object *)output->pointer;
-
- switch (obj->type) {
- case ACPI_TYPE_PACKAGE:
- if (obj->package.count != 2)
- break;
+ if (obj->type == ACPI_TYPE_PACKAGE && obj->package.count == 2) {
len = obj->package.elements[0].integer.value;
if (buf) {
if (attribute == ACPI_ATTR_INDEX_SHOW)
@@ -250,10 +246,10 @@ dsm_get_label(acpi_handle handle, int func,
}
kfree(output->pointer);
return len;
- break;
- default:
- kfree(output->pointer);
}
+
+ kfree(output->pointer);
+
return -1;
}

--
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/