linux-kernel - [PATCH AUTOSEL 5.7 05/54] drm/virtio: fix memory leak in virtio_gpu_cleanup

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Message-Id: <20200824163634.606093-5-sashal@kernel.org>
Date:   Mon, 24 Aug 2020 12:35:44 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Xin He <hexin.op@...edance.com>, Qi Liu <liuqi.16@...edance.com>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Sasha Levin <sashal@...nel.org>,
        dri-devel@...ts.freedesktop.org,
        virtualization@...ts.linux-foundation.org
Subject: [PATCH AUTOSEL 5.7 05/54] drm/virtio: fix memory leak in virtio_gpu_cleanup_object()

From: Xin He <hexin.op@...edance.com>

[ Upstream commit 836b194d65782aaec4485a07d2aab52d3f698505 ]

Before setting shmem->pages to NULL, kfree() should
be called.

Signed-off-by: Xin He <hexin.op@...edance.com>
Reviewed-by: Qi Liu <liuqi.16@...edance.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200722051851.72662-1-hexin.op@bytedance.com
Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/virtio/virtgpu_object.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index d9039bb7c5e37..1e65c5ac573b1 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -79,6 +79,7 @@ void virtio_gpu_cleanup_object(struct virtio_gpu_object *bo)
 			}
 
 			sg_free_table(shmem->pages);
+			kfree(shmem->pages);
 			shmem->pages = NULL;
 			drm_gem_shmem_unpin(&bo->base.base);
 		}
-- 
2.25.1