From: Xiu Jianfeng Date: Wed, 9 Nov 2022 09:19:05 +0000 (+0800) Subject: drm/virtio: Fix memory leak in virtio_gpu_object_create() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a764da46cd15f8b40292d2c0b29c4bf9a3e66c7e;p=linux.git drm/virtio: Fix memory leak in virtio_gpu_object_create() 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 Reviewed-by: Dmitry Osipenko Signed-off-by: Dmitry Osipenko Link: https://patchwork.freedesktop.org/patch/msgid/20221109091905.55451-1-xiujianfeng@huawei.com --- diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index 8d7728181de01..c7e74cf130221 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: