diff --git a/linux-4.19/hi3516dv300_patch/hi3516dv300.patch b/linux-4.19/hi3516dv300_patch/hi3516dv300.patch
index fd0098263560970bf3fc6298887934da7b32344a..dc7489597de3ebb3923569baf3bdf0d97f8eb02a 100644
--- a/linux-4.19/hi3516dv300_patch/hi3516dv300.patch
+++ b/linux-4.19/hi3516dv300_patch/hi3516dv300.patch
@@ -301491,7 +301491,7 @@ new file mode 100644
 index 000000000000..123a61f44d1c
 --- /dev/null
 +++ b/drivers/gpu/drm/hisilicon/hismart/hi_drm_drv.c
-@@ -0,0 +1,367 @@
+@@ -0,0 +1,376 @@
 +/*
 + * Copyright (c) Hisilicon Technologies Co., Ltd. 2020-2020. All rights reserved.
 + * Description: Hisilicon DRM driver
@@ -301583,6 +301583,9 @@ index 000000000000..123a61f44d1c
 +    page = sg_page(sgt->sgl);
 +    arg->phyaddr = PFN_PHYS(page_to_pfn(page));
 +    drm_gem_object_put_unlocked(gem_obj);
++    sg_free_table(sgt);
++    kfree(sgt);
++    sgt = ERR_PTR(-ENOMEM);
 +    return 0;
 +}
 +
@@ -301647,6 +301650,9 @@ index 000000000000..123a61f44d1c
 +    node->size = args->size;
 +    drm_gem_object_put_unlocked(gem_obj);
 +    osal_list_add(&node->list, &g_phys_addr);
++    sg_free_table(sgt);
++    kfree(sgt);
++    sgt = ERR_PTR(-ENOMEM);
 +    return 0;
 +}
 +
@@ -301666,6 +301672,9 @@ index 000000000000..123a61f44d1c
 +    phyaddr = PFN_PHYS(page_to_pfn(page));
 +
 +    drm_gem_cma_free_object(gem_obj);
++    sg_free_table(sgt);
++    kfree(sgt);
++    sgt = ERR_PTR(-ENOMEM);
 +    osal_list_for_each_entry(p, &g_phys_addr, list) {
 +        if (p->phys_addr == phyaddr) {
 +            osal_list_del(&p->list);