From a764da46cd15f8b40292d2c0b29c4bf9a3e66c7e Mon Sep 17 00:00:00 2001
From: Xiu Jianfeng <xiujianfeng@huawei.com>
Date: Wed, 9 Nov 2022 17:19:05 +0800
Subject: [PATCH] drm/virtio: Fix memory leak in virtio_gpu_object_create()
Git-commit: a764da46cd15f8b40292d2c0b29c4bf9a3e66c7e
Patch-mainline: v6.2-rc3
References: git-fixes
The virtio_gpu_object_shmem_init() will alloc memory and save it in
@ents, so when virtio_gpu_array_alloc() fails, this memory should be
freed, this patch fixes it.
Fixes: e7fef0923303 ("drm/virtio: Simplify error handling of virtio_gpu_object_create()")
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221109091905.55451-1-xiujianfeng@huawei.com
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/virtio/virtgpu_object.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index 8d7728181de0..c7e74cf13022 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -184,7 +184,7 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
struct virtio_gpu_object_array *objs = NULL;
struct drm_gem_shmem_object *shmem_obj;
struct virtio_gpu_object *bo;
- struct virtio_gpu_mem_entry *ents;
+ struct virtio_gpu_mem_entry *ents = NULL;
unsigned int nents;
int ret;
@@ -210,7 +210,7 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
ret = -ENOMEM;
objs = virtio_gpu_array_alloc(1);
if (!objs)
- goto err_put_id;
+ goto err_free_entry;
virtio_gpu_array_add_obj(objs, &bo->base.base);
ret = virtio_gpu_array_lock_resv(objs);
@@ -239,6 +239,8 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
err_put_objs:
virtio_gpu_array_put_free(objs);
+err_free_entry:
+ kvfree(ents);
err_put_id:
virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle);
err_free_gem:
--
2.35.3