linux-kernel - [PATCH 3.10 195/250] ACPI / resources: free memory on error in add_region

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Message-Id: <1496876436-32402-196-git-send-email-w@1wt.eu>
Date:   Thu,  8 Jun 2017 00:59:41 +0200
From:   Willy Tarreau <w@....eu>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        linux@...ck-us.net
Cc:     Dan Carpenter <dan.carpenter@...cle.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Willy Tarreau <w@....eu>
Subject: [PATCH 3.10 195/250] ACPI / resources: free memory on error in add_region_before()

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

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: Willy Tarreau <w@....eu>
---
 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 226aadb..2a7711f 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -579,8 +579,10 @@ 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;
-- 
2.8.0.rc2.1.gbe9624a