linux-kernel - [PATCH] drm/virtio: fix the missed drm_gem_object_put() in virtio_gpu_user_framebuffer

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Message-ID: <1633770560-11658-1-git-send-email-jingxiangfeng@huawei.com>
Date:   Sat, 9 Oct 2021 17:09:20 +0800
From:   Jing Xiangfeng <jingxiangfeng@...wei.com>
To:     <airlied@...ux.ie>, <kraxel@...hat.com>, <daniel@...ll.ch>
CC:     <dri-devel@...ts.freedesktop.org>,
        <virtualization@...ts.linux-foundation.org>,
        <linux-kernel@...r.kernel.org>, <jingxiangfeng@...wei.com>
Subject: [PATCH] drm/virtio: fix the missed drm_gem_object_put() in virtio_gpu_user_framebuffer_create()

virtio_gpu_user_framebuffer_create() misses to call drm_gem_object_put()
in an error path. Add the missed function call to fix it.

Signed-off-by: Jing Xiangfeng <jingxiangfeng@...wei.com>
---
 drivers/gpu/drm/virtio/virtgpu_display.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c
index a6caebd4a0dd..5b00310ac4cd 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -308,8 +308,10 @@ virtio_gpu_user_framebuffer_create(struct drm_device *dev,
 		return ERR_PTR(-EINVAL);
 
 	virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL);
-	if (virtio_gpu_fb == NULL)
+	if (virtio_gpu_fb == NULL) {
+		drm_gem_object_put(obj);
 		return ERR_PTR(-ENOMEM);
+	}
 
 	ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
 	if (ret) {
-- 
2.26.0.106.g9fadedd