linux-kernel - [PATCH] drm/virtgpu: Fix a resource leak in an error handling path

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Date:   Sun, 16 May 2021 09:44:21 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     airlied@...ux.ie, kraxel@...hat.com, daniel@...ll.ch,
        ezequiel@...labora.com
Cc:     dri-devel@...ts.freedesktop.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] drm/virtgpu: Fix a resource leak in an error handling path

If an error occurs after calling 'virtio_gpu_init()', 'virtio_gpu_deinit()'
must be called as already done in the remove function.

Fixes: d516e75c71c9 ("drm/virtio: Drop deprecated load/unload initialization")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/gpu/drm/virtio/virtgpu_drv.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
index 33bf5f53ae31..ca77edbc5ea0 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -125,11 +125,13 @@ static int virtio_gpu_probe(struct virtio_device *vdev)
 
 	ret = drm_dev_register(dev, 0);
 	if (ret)
-		goto err_free;
+		goto err_deinit;
 
 	drm_fbdev_generic_setup(vdev->priv, 32);
 	return 0;
 
+err_deinit:
+	virtio_gpu_deinit(dev);
 err_free:
 	drm_dev_put(dev);
 	return ret;
-- 
2.30.2