linux-kernel - [PATCH 3.12 130/142] ACPI / resources: free memory on error in add_region

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Message-Id: <e8111323028522a9072a6039f21da68e989739f7.1491838390.git.jslaby@suse.cz>
Date:   Mon, 10 Apr 2017 17:33:31 +0200
From:   Jiri Slaby <jslaby@...e.cz>
To:     stable@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Dan Carpenter <dan.carpenter@...cle.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 130/142] ACPI / resources: free memory on error in add_region_before()

From: Dan Carpenter <dan.carpenter@...cle.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 7bc10388ccdd79b3d20463151a1f8e7a590a775b upstream.

There is a small memory leak on error.

Fixes: 0f1b414d1907 (ACPI / PNP: Avoid conflicting resource reservations)
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/acpi/resource.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 28314ba82320..3760e9635aea 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -577,8 +577,10 @@ static int add_region_before(u64 start, u64 end, u8 space_id,
 		return -ENOMEM;
 
 	error = request_range(start, end, space_id, flags, desc);
-	if (error)
+	if (error) {
+		kfree(reg);
 		return error;
+	}
 
 	reg->start = start;
 	reg->end = end;
-- 
2.12.2