linux-kernel - [PATCH] video: goldfishfb: fix memory leak on driver remove

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Message-Id: <20180706120422.14628-1-vasilyev@ispras.ru>
Date:   Fri,  6 Jul 2018 15:04:22 +0300
From:   Anton Vasilyev <vasilyev@...ras.ru>
To:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:     Anton Vasilyev <vasilyev@...ras.ru>,
        Aleksandar Markovic <aleksandar.markovic@...s.com>,
        Miodrag Dinic <miodrag.dinic@...s.com>,
        Goran Ferenc <goran.ferenc@...s.com>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: [PATCH] video: goldfishfb: fix memory leak on driver remove

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>
---
 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 3b70044773b6..9fe7edf725c6 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;
 }
 
-- 
2.18.0