linux-kernel - [PATCH AUTOSEL 4.14 33/67] video: goldfishfb: fix memory leak on driver remove

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20180907003716.57737-33-alexander.levin@microsoft.com>
Date:   Fri, 7 Sep 2018 00:37:45 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Anton Vasilyev <vasilyev@...ras.ru>,
        Aleksandar Markovic <aleksandar.markovic@...s.com>,
        Miodrag Dinic <miodrag.dinic@...s.com>,
        Goran Ferenc <goran.ferenc@...s.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL 4.14 33/67] video: goldfishfb: fix memory leak on
 driver remove

From: Anton Vasilyev <vasilyev@...ras.ru>

[ Upstream commit 5958fde72d04e7b8c6de3669d1f794a90997e3eb ]

goldfish_fb_probe() allocates memory for fb, but goldfish_fb_remove() does
not have deallocation of fb, which leads to memory leak on probe/remove.

The patch adds deallocation into goldfish_fb_remove().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Anton Vasilyev <vasilyev@...ras.ru>
Cc: Aleksandar Markovic <aleksandar.markovic@...s.com>
Cc: Miodrag Dinic <miodrag.dinic@...s.com>
Cc: Goran Ferenc <goran.ferenc@...s.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/video/fbdev/goldfishfb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/video/fbdev/goldfishfb.c b/drivers/video/fbdev/goldfishfb.c
index 7f6c9e6cfc6c..14a93cb21310 100644
--- a/drivers/video/fbdev/goldfishfb.c
+++ b/drivers/video/fbdev/goldfishfb.c
@@ -301,6 +301,7 @@ static int goldfish_fb_remove(struct platform_device *pdev)
 	dma_free_coherent(&pdev->dev, framesize, (void *)fb->fb.screen_base,
 						fb->fb.fix.smem_start);
 	iounmap(fb->reg_base);
+	kfree(fb);
 	return 0;
 }
 
-- 
2.17.1