From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Sat, 8 May 2021 07:23:09 +0000 (+0200)
Subject: ACPI: scan: Fix a memory leak in an error handling path
X-Git-Tag: accepted/tizen/unified/20230118.172025~7231^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0c8bd174f0fc131bc9dfab35cd8784f59045da87;p=platform%2Fkernel%2Flinux-rpi.git

ACPI: scan: Fix a memory leak in an error handling path

If 'acpi_device_set_name()' fails, we must free
'acpi_device_bus_id->bus_id' or there is a (potential) memory leak.

Fixes: eb50aaf960e3 ("ACPI: scan: Use unique number for instance_no")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index a22778e..651a431 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -700,6 +700,7 @@ int acpi_device_add(struct acpi_device *device,
 
 		result = acpi_device_set_name(device, acpi_device_bus_id);
 		if (result) {
+			kfree_const(acpi_device_bus_id->bus_id);
 			kfree(acpi_device_bus_id);
 			goto err_unlock;
 		}