diff --git a/lv_core/lv_group.c b/lv_core/lv_group.c
index a6f911dc2..0d710a1e1 100644
--- a/lv_core/lv_group.c
+++ b/lv_core/lv_group.c
@@ -43,6 +43,8 @@ static void style_mod_edit_def(lv_style_t * style);
 lv_group_t * lv_group_create(void)
 {
     lv_group_t * group = lv_mem_alloc(sizeof(lv_group_t));
+    lv_mem_assert(group);
+    if(group == NULL) return NULL;
     lv_ll_init(&group->obj_ll, sizeof(lv_obj_t *));
 
     group->style_mod = style_mod_def;
@@ -90,6 +92,8 @@ void lv_group_add_obj(lv_group_t * group, lv_obj_t * obj)
 
     obj->group_p = group;
     lv_obj_t ** next = lv_ll_ins_tail(&group->obj_ll);
+    lv_mem_assert(next);
+    if(next == NULL) return;
     *next = obj;
 
     /* If the head and the tail is equal then there is only one object in the linked list.
diff --git a/lv_core/lv_obj.c b/lv_core/lv_obj.c
index 892f6020a..923002eb9 100644
--- a/lv_core/lv_obj.c
+++ b/lv_core/lv_obj.c
@@ -128,6 +128,8 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, lv_obj_t * copy)
     /*Create a screen if the parent is NULL*/
     if(parent == NULL) {
         new_obj = lv_ll_ins_head(&scr_ll);
+        lv_mem_assert(new_obj);
+        if(new_obj == NULL) return NULL;
 
         new_obj->par = NULL; /*Screens has no a parent*/
         lv_ll_init(&(new_obj->child_ll), sizeof(lv_obj_t));
@@ -178,6 +180,9 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, lv_obj_t * copy)
     /*parent != NULL create normal obj. on a parent*/
     else {
         new_obj = lv_ll_ins_head(&(parent)->child_ll);
+        lv_mem_assert(new_obj);
+        if(new_obj == NULL) return NULL;
+
 
         new_obj->par = parent; /*Set the parent*/
         lv_ll_init(&(new_obj->child_ll), sizeof(lv_obj_t));
diff --git a/lv_core/lv_style.c b/lv_core/lv_style.c
index 3866a2da7..daa8ee116 100644
--- a/lv_core/lv_style.c
+++ b/lv_core/lv_style.c
@@ -226,6 +226,9 @@ void * lv_style_anim_create(lv_style_anim_t * anim)
 {
     lv_style_anim_dsc_t * dsc;
     dsc = lv_mem_alloc(sizeof(lv_style_anim_dsc_t));
+    lv_mem_assert(dsc);
+    if(dsc == NULL) return NULL;
+
     dsc->style_anim = anim->style_anim;
     memcpy(&dsc->style_start, anim->style_start, sizeof(lv_style_t));
     memcpy(&dsc->style_end, anim->style_end, sizeof(lv_style_t));
diff --git a/lv_hal/lv_hal_disp.c b/lv_hal/lv_hal_disp.c
index ea15ff070..8c8e699a2 100644
--- a/lv_hal/lv_hal_disp.c
+++ b/lv_hal/lv_hal_disp.c
@@ -70,7 +70,8 @@ lv_disp_t * lv_disp_drv_register(lv_disp_drv_t * driver)
     lv_disp_t * node;
 
     node = lv_mem_alloc(sizeof(lv_disp_t));
-    if(!node) return NULL;
+    lv_mem_assert(node);
+    if(node == NULL) return NULL;
 
     memcpy(&node->driver, driver, sizeof(lv_disp_drv_t));
     node->next = NULL;
diff --git a/lv_misc/lv_anim.c b/lv_misc/lv_anim.c
index 54b11b17f..9b271289f 100644
--- a/lv_misc/lv_anim.c
+++ b/lv_misc/lv_anim.c
@@ -68,6 +68,7 @@ void lv_anim_create(lv_anim_t * anim_p)
     /*Add the new animation to the animation linked list*/
     lv_anim_t * new_anim = lv_ll_ins_head(&anim_ll);
     lv_mem_assert(new_anim);
+    if(new_anim == NULL) return;
 
     /*Initialize the animation descriptor*/
     anim_p->playback_now = 0;
diff --git a/lv_misc/lv_fs.c b/lv_misc/lv_fs.c
index 68af87cf0..139e11554 100644
--- a/lv_misc/lv_fs.c
+++ b/lv_misc/lv_fs.c
@@ -82,6 +82,7 @@ lv_fs_res_t lv_fs_open(lv_fs_file_t * file_p, const char * path, lv_fs_mode_t mo
     }
 
     file_p->file_d = lv_mem_alloc(file_p->drv->file_size);
+	lv_mem_assert(file_p->file_d);
     if(file_p->file_d == NULL) {
         file_p->drv = NULL;
         return LV_FS_RES_OUT_OF_MEM;  /* Out of memory */
@@ -286,6 +287,7 @@ lv_fs_res_t lv_fs_dir_open(lv_fs_dir_t * rddir_p, const char * path)
     }
 
     rddir_p->dir_d = lv_mem_alloc(rddir_p->drv->rddir_size);
+	lv_mem_assert(rddir_p->dir_d);
     if(rddir_p->dir_d == NULL) {
         rddir_p->dir_d = NULL;
         return LV_FS_RES_OUT_OF_MEM;  /* Out of memory */
@@ -392,8 +394,9 @@ void lv_fs_add_drv(lv_fs_drv_t * drv_p)
     lv_fs_drv_t * new_drv;
     new_drv =  lv_ll_ins_head(&drv_ll);
     lv_mem_assert(new_drv);
-    memcpy(new_drv, drv_p, sizeof(lv_fs_drv_t));
+    if(new_drv == NULL) return;
 
+    memcpy(new_drv, drv_p, sizeof(lv_fs_drv_t));
 }
 
 /**
diff --git a/lv_misc/lv_ll.c b/lv_misc/lv_ll.c
index c345eda4a..185157d9f 100644
--- a/lv_misc/lv_ll.c
+++ b/lv_misc/lv_ll.c
@@ -103,9 +103,10 @@ void * lv_ll_ins_prev(lv_ll_t * ll_p, void * n_act)
 
     if(lv_ll_get_head(ll_p) == n_act) {
         n_new = lv_ll_ins_head(ll_p);
+        if(n_new == NULL) return NULL;
     } else {
         n_new = lv_mem_alloc(ll_p->n_size + LL_NODE_META_SIZE);
-        lv_mem_assert(n_new);
+        if(n_new == NULL) return NULL;
 
         n_prev = lv_ll_get_prev(ll_p, n_act);
         node_set_next(ll_p, n_prev, n_new);
@@ -127,6 +128,7 @@ void * lv_ll_ins_tail(lv_ll_t * ll_p)
     lv_ll_node_t * n_new;
 
     n_new = lv_mem_alloc(ll_p->n_size + LL_NODE_META_SIZE);
+    if(n_new == NULL) return NULL;
 
     if(n_new != NULL) {
         node_set_next(ll_p, n_new, NULL); /*No next after the new tail*/
diff --git a/lv_misc/lv_task.c b/lv_misc/lv_task.c
index 9e1488f54..9efead715 100644
--- a/lv_misc/lv_task.c
+++ b/lv_misc/lv_task.c
@@ -147,10 +147,14 @@ lv_task_t * lv_task_create(void (*task)(void *), uint32_t period, lv_task_prio_t
     tmp = lv_ll_get_head(&lv_task_ll);
     if(NULL == tmp) {                               /*First task*/
         new_lv_task = lv_ll_ins_head(&lv_task_ll);
+        lv_mem_assert(new_lv_task);
+        if(new_lv_task == NULL) return NULL;
     } else {
         do {
             if(tmp->prio <= prio) {
                 new_lv_task = lv_ll_ins_prev(&lv_task_ll, tmp);
+                lv_mem_assert(new_lv_task);
+                if(new_lv_task == NULL) return NULL;
                 break;
             }
             tmp = lv_ll_get_next(&lv_task_ll, tmp);
@@ -158,11 +162,11 @@ lv_task_t * lv_task_create(void (*task)(void *), uint32_t period, lv_task_prio_t
 
         if(tmp == NULL) {   /*Only too high priority tasks were found*/
             new_lv_task = lv_ll_ins_tail(&lv_task_ll);
+            lv_mem_assert(new_lv_task);
+            if(new_lv_task == NULL) return NULL;
         }
     }
 
-    lv_mem_assert(new_lv_task);
-
     new_lv_task->period = period;
     new_lv_task->task = task;
     new_lv_task->prio = prio;
diff --git a/lv_misc/lv_ufs.c b/lv_misc/lv_ufs.c
index 5045c2719..4b28fbf6c 100644
--- a/lv_misc/lv_ufs.c
+++ b/lv_misc/lv_ufs.c
@@ -488,11 +488,13 @@ static lv_ufs_ent_t * lv_ufs_ent_new(const char * fn)
 {
     lv_ufs_ent_t * new_ent = NULL;
     new_ent = lv_ll_ins_head(&file_ll);                 /*Create a new file*/
-    if(new_ent == NULL) {
-        return NULL;
-    }
+    lv_mem_assert(new_ent);
+    if(new_ent == NULL) return NULL;
 
     new_ent->fn_d = lv_mem_alloc(strlen(fn)  + 1); /*Save the name*/
+	lv_mem_assert(new_ent->fn_d);
+    if(new_ent->fn_d == NULL) return NULL;
+
     strcpy(new_ent->fn_d, fn);
     new_ent->data_d = NULL;
     new_ent->size = 0;
diff --git a/lv_objx/lv_arc.c b/lv_objx/lv_arc.c
index 5314e99ac..b26929d88 100644
--- a/lv_objx/lv_arc.c
+++ b/lv_objx/lv_arc.c
@@ -53,10 +53,13 @@ lv_obj_t * lv_arc_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor of arc*/
     lv_obj_t * new_arc = lv_obj_create(par, copy);
     lv_mem_assert(new_arc);
+    if(new_arc == NULL) return NULL;
 
     /*Allocate the arc type specific extended data*/
     lv_arc_ext_t * ext = lv_obj_allocate_ext_attr(new_arc, sizeof(lv_arc_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_arc);
     if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_arc);
 
diff --git a/lv_objx/lv_bar.c b/lv_objx/lv_bar.c
index 7cc84c951..24ba5f2bd 100644
--- a/lv_objx/lv_bar.c
+++ b/lv_objx/lv_bar.c
@@ -55,6 +55,7 @@ lv_obj_t * lv_bar_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor basic object*/
     lv_obj_t * new_bar = lv_obj_create(par, copy);
     lv_mem_assert(new_bar);
+    if(new_bar== NULL) return NULL;
 
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_bar);
     if(ancestor_design_f == NULL) ancestor_design_f = lv_obj_get_design_func(new_bar);
@@ -62,6 +63,8 @@ lv_obj_t * lv_bar_create(lv_obj_t * par, lv_obj_t * copy)
     /*Allocate the object type specific extended data*/
     lv_bar_ext_t * ext = lv_obj_allocate_ext_attr(new_bar, sizeof(lv_bar_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->min_value = 0;
     ext->max_value = 100;
     ext->cur_value = 0;
diff --git a/lv_objx/lv_btn.c b/lv_objx/lv_btn.c
index b72469e90..d59771105 100644
--- a/lv_objx/lv_btn.c
+++ b/lv_objx/lv_btn.c
@@ -71,12 +71,16 @@ lv_obj_t * lv_btn_create(lv_obj_t * par, lv_obj_t * copy)
 
     new_btn = lv_cont_create(par, copy);
     lv_mem_assert(new_btn);
+    if(new_btn == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_btn);
     if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_btn);
 
     /*Allocate the extended data*/
     lv_btn_ext_t * ext = lv_obj_allocate_ext_attr(new_btn, sizeof(lv_btn_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->state = LV_BTN_STATE_REL;
 
     ext->actions[LV_BTN_ACTION_PR] = NULL;
diff --git a/lv_objx/lv_btnm.c b/lv_objx/lv_btnm.c
index fdccadb7d..d1c39c45d 100644
--- a/lv_objx/lv_btnm.c
+++ b/lv_objx/lv_btnm.c
@@ -67,11 +67,15 @@ lv_obj_t * lv_btnm_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor object*/
     lv_obj_t * new_btnm = lv_obj_create(par, copy);
     lv_mem_assert(new_btnm);
+    if(new_btnm == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_btnm);
 
     /*Allocate the object type specific extended data*/
     lv_btnm_ext_t * ext = lv_obj_allocate_ext_attr(new_btnm, sizeof(lv_btnm_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->btn_cnt = 0;
     ext->btn_id_pr = LV_BTNM_PR_NONE;
     ext->btn_id_tgl = LV_BTNM_PR_NONE;
@@ -693,6 +697,9 @@ static void create_buttons(lv_obj_t * btnm, const char ** map)
     }
 
     ext->button_areas = lv_mem_alloc(sizeof(lv_area_t) * btn_cnt);
+    lv_mem_assert(ext->button_areas);
+    if(ext->button_areas == NULL) btn_cnt = 0;
+
     ext->btn_cnt = btn_cnt;
 }
 
diff --git a/lv_objx/lv_calendar.c b/lv_objx/lv_calendar.c
index 66cdc7154..c76d7d6f3 100644
--- a/lv_objx/lv_calendar.c
+++ b/lv_objx/lv_calendar.c
@@ -73,10 +73,12 @@ lv_obj_t * lv_calendar_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor of calendar*/
     lv_obj_t * new_calendar = lv_obj_create(par, copy);
     lv_mem_assert(new_calendar);
+    if(new_calendar == NULL) return NULL;
 
     /*Allocate the calendar type specific extended data*/
     lv_calendar_ext_t * ext = lv_obj_allocate_ext_attr(new_calendar, sizeof(lv_calendar_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_calendar);
     if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_calendar);
 
diff --git a/lv_objx/lv_cb.c b/lv_objx/lv_cb.c
index 604aa7573..ba847397c 100644
--- a/lv_objx/lv_cb.c
+++ b/lv_objx/lv_cb.c
@@ -53,11 +53,15 @@ lv_obj_t * lv_cb_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor basic object*/
     lv_obj_t * new_cb = lv_btn_create(par, copy);
     lv_mem_assert(new_cb);
+    if(new_cb == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_cb);
     if(ancestor_bg_design == NULL) ancestor_bg_design = lv_obj_get_design_func(new_cb);
 
     lv_cb_ext_t * ext = lv_obj_allocate_ext_attr(new_cb, sizeof(lv_cb_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->bullet = NULL;
     ext->label = NULL;
 
diff --git a/lv_objx/lv_chart.c b/lv_objx/lv_chart.c
index 1a3a499de..f1bc57592 100644
--- a/lv_objx/lv_chart.c
+++ b/lv_objx/lv_chart.c
@@ -60,10 +60,13 @@ lv_obj_t * lv_chart_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor basic object*/
     lv_obj_t * new_chart = lv_obj_create(par, copy);
     lv_mem_assert(new_chart);
+    if(new_chart == NULL) return NULL;
 
     /*Allocate the object type specific extended data*/
     lv_chart_ext_t * ext = lv_obj_allocate_ext_attr(new_chart, sizeof(lv_chart_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     lv_ll_init(&ext->series_ll, sizeof(lv_chart_series_t));
     ext->series.num = 0;
     ext->ymin = LV_CHART_YMIN_DEF;
@@ -125,6 +128,9 @@ lv_chart_series_t * lv_chart_add_series(lv_obj_t * chart, lv_color_t color)
 {
     lv_chart_ext_t * ext = lv_obj_get_ext_attr(chart);
     lv_chart_series_t * ser = lv_ll_ins_head(&ext->series_ll);
+	lv_mem_assert(ser);
+    if(ser == NULL) return NULL;
+
     lv_coord_t def = (ext->ymin + ext->ymax) >> 1;  /*half range as default value*/
 
     if(ser == NULL) return NULL;
@@ -132,6 +138,12 @@ lv_chart_series_t * lv_chart_add_series(lv_obj_t * chart, lv_color_t color)
     ser->color = color;
 
     ser->points = lv_mem_alloc(sizeof(lv_coord_t) * ext->point_cnt);
+    lv_mem_assert(ser->points);
+    if(ser->points == NULL) {
+    	lv_ll_rem(&ext->series_ll, ser);
+    	lv_mem_free(ser);
+    	return NULL;
+    }
 
     uint16_t i;
     lv_coord_t * p_tmp = ser->points;
diff --git a/lv_objx/lv_cont.c b/lv_objx/lv_cont.c
index cbe3fce65..2205dc133 100644
--- a/lv_objx/lv_cont.c
+++ b/lv_objx/lv_cont.c
@@ -65,10 +65,14 @@ lv_obj_t * lv_cont_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create a basic object*/
     lv_obj_t * new_cont = lv_obj_create(par, copy);
     lv_mem_assert(new_cont);
+    if(new_cont == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_cont);
 
     lv_obj_allocate_ext_attr(new_cont, sizeof(lv_cont_ext_t));
     lv_cont_ext_t * ext = lv_obj_get_ext_attr(new_cont);
+    if(ext == NULL) return NULL;
+
     lv_mem_assert(ext);
     ext->hor_fit = 0;
     ext->ver_fit = 0;
diff --git a/lv_objx/lv_ddlist.c b/lv_objx/lv_ddlist.c
index 7dcf2e40c..99621fb63 100644
--- a/lv_objx/lv_ddlist.c
+++ b/lv_objx/lv_ddlist.c
@@ -69,6 +69,8 @@ lv_obj_t * lv_ddlist_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor drop down list*/
     lv_obj_t * new_ddlist = lv_page_create(par, copy);
     lv_mem_assert(new_ddlist);
+    if(new_ddlist == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_ddlist);
     if(ancestor_scrl_signal == NULL) ancestor_scrl_signal = lv_obj_get_signal_func(lv_page_get_scrl(new_ddlist));
     if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_ddlist);
@@ -76,6 +78,7 @@ lv_obj_t * lv_ddlist_create(lv_obj_t * par, lv_obj_t * copy)
     /*Allocate the drop down list type specific extended data*/
     lv_ddlist_ext_t * ext = lv_obj_allocate_ext_attr(new_ddlist, sizeof(lv_ddlist_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
 
     /*Initialize the allocated 'ext' */
     ext->label = NULL;
diff --git a/lv_objx/lv_gauge.c b/lv_objx/lv_gauge.c
index 4cf73e65a..cd3306eff 100644
--- a/lv_objx/lv_gauge.c
+++ b/lv_objx/lv_gauge.c
@@ -63,10 +63,12 @@ lv_obj_t * lv_gauge_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor gauge*/
     lv_obj_t * new_gauge = lv_lmeter_create(par, copy);
     lv_mem_assert(new_gauge);
+    if(new_gauge == NULL) return NULL;
 
     /*Allocate the gauge type specific extended data*/
     lv_gauge_ext_t * ext = lv_obj_allocate_ext_attr(new_gauge, sizeof(lv_gauge_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
 
     /*Initialize the allocated 'ext' */
     ext->needle_count = 0;
diff --git a/lv_objx/lv_img.c b/lv_objx/lv_img.c
index f26b479e9..06d72c28e 100644
--- a/lv_objx/lv_img.c
+++ b/lv_objx/lv_img.c
@@ -59,11 +59,15 @@ lv_obj_t * lv_img_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create a basic object*/
     new_img = lv_obj_create(par, copy);
     lv_mem_assert(new_img);
+    if(new_img == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_img);
 
     /*Extend the basic object to image object*/
     lv_img_ext_t * ext = lv_obj_allocate_ext_attr(new_img, sizeof(lv_img_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->src = NULL;
     ext->src_type = LV_IMG_SRC_UNKNOWN;
     ext->w = lv_obj_get_width(new_img);
@@ -167,6 +171,8 @@ void lv_img_set_src(lv_obj_t * img, const void * src_img)
         if(ext->src != src_img) {
             lv_mem_free(ext->src);
             char * new_fn = lv_mem_alloc(strlen(src_img) + 1);
+            lv_mem_assert(new_fn);
+            if(new_fn == NULL) return;
             strcpy(new_fn, src_img);
             ext->src = new_fn;
 
@@ -185,6 +191,8 @@ void lv_img_set_src(lv_obj_t * img, const void * src_img)
         if(ext->src != src_img) {
             lv_mem_free(ext->src);
             char * new_txt = lv_mem_alloc(strlen(src_img) + 1);
+            lv_mem_assert(new_txt);
+            if(new_txt == NULL) return;
             strcpy(new_txt, src_img);
             ext->src = new_txt;
         }
diff --git a/lv_objx/lv_kb.c b/lv_objx/lv_kb.c
index 455b25b20..6caf32538 100644
--- a/lv_objx/lv_kb.c
+++ b/lv_objx/lv_kb.c
@@ -78,11 +78,14 @@ lv_obj_t * lv_kb_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor of keyboard*/
     lv_obj_t * new_kb = lv_btnm_create(par, copy);
     lv_mem_assert(new_kb);
+    if(new_kb == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_kb);
 
     /*Allocate the keyboard type specific extended data*/
     lv_kb_ext_t * ext = lv_obj_allocate_ext_attr(new_kb, sizeof(lv_kb_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
 
     /*Initialize the allocated 'ext' */
 
diff --git a/lv_objx/lv_label.c b/lv_objx/lv_label.c
index 0cda61a08..2a4aa0a37 100644
--- a/lv_objx/lv_label.c
+++ b/lv_objx/lv_label.c
@@ -67,6 +67,8 @@ lv_obj_t * lv_label_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create a basic object*/
     lv_obj_t * new_label = lv_obj_create(par, copy);
     lv_mem_assert(new_label);
+    if(new_label == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_label);
 
     /*Extend the basic object to a label object*/
@@ -74,6 +76,8 @@ lv_obj_t * lv_label_create(lv_obj_t * par, lv_obj_t * copy)
 
     lv_label_ext_t * ext = lv_obj_get_ext_attr(new_label);
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->text = NULL;
     ext->static_txt = 0;
     ext->recolor = 0;
@@ -153,6 +157,9 @@ void lv_label_set_text(lv_obj_t * label, const char * text)
         }
 
         ext->text = lv_mem_alloc(len);
+        lv_mem_assert(ext->text);
+        if(ext->text == NULL) return;
+
         strcpy(ext->text, text);
         ext->static_txt = 0;    /*Now the text is dynamically allocated*/
     }
@@ -184,6 +191,9 @@ void lv_label_set_array_text(lv_obj_t * label, const char * array, uint16_t size
         ext->text = NULL;
     }
     ext->text = lv_mem_alloc(size + 1);
+    lv_mem_assert(ext->text);
+    if(ext->text == NULL) return;
+
     memcpy(ext->text, array, size);
     ext->text[size] = '\0';
     ext->static_txt = 0;    /*Now the text is dynamically allocated*/
diff --git a/lv_objx/lv_led.c b/lv_objx/lv_led.c
index 985534da9..0c5c3a6f3 100644
--- a/lv_objx/lv_led.c
+++ b/lv_objx/lv_led.c
@@ -55,12 +55,16 @@ lv_obj_t * lv_led_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor basic object*/
     lv_obj_t * new_led = lv_obj_create(par, copy);
     lv_mem_assert(new_led);
+    if(new_led == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_led);
     if(ancestor_design_f == NULL) ancestor_design_f = lv_obj_get_design_func(new_led);
 
     /*Allocate the object type specific extended data*/
     lv_led_ext_t * ext = lv_obj_allocate_ext_attr(new_led, sizeof(lv_led_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->bright = LV_LED_BRIGHT_ON;
 
     lv_obj_set_signal_func(new_led, lv_led_signal);
diff --git a/lv_objx/lv_line.c b/lv_objx/lv_line.c
index cef87180e..17dfd2b5d 100644
--- a/lv_objx/lv_line.c
+++ b/lv_objx/lv_line.c
@@ -53,11 +53,15 @@ lv_obj_t * lv_line_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create a basic object*/
     lv_obj_t * new_line = lv_obj_create(par, copy);
     lv_mem_assert(new_line);
+    if(new_line == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_line);
 
     /*Extend the basic object to line object*/
     lv_line_ext_t * ext = lv_obj_allocate_ext_attr(new_line, sizeof(lv_line_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->point_num = 0;
     ext->point_array = NULL;
     ext->auto_size = 1;
diff --git a/lv_objx/lv_list.c b/lv_objx/lv_list.c
index 9a4866c0d..4789c75c8 100644
--- a/lv_objx/lv_list.c
+++ b/lv_objx/lv_list.c
@@ -74,10 +74,13 @@ lv_obj_t * lv_list_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor basic object*/
     lv_obj_t * new_list = lv_page_create(par, copy);
     lv_mem_assert(new_list);
+    if(new_list == NULL) return NULL;
+
     if(ancestor_page_signal == NULL) ancestor_page_signal = lv_obj_get_signal_func(new_list);
 
     lv_list_ext_t * ext = lv_obj_allocate_ext_attr(new_list, sizeof(lv_list_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
 
     ext->style_img = NULL;
     ext->styles_btn[LV_BTN_STATE_REL] = &lv_style_btn_rel;
diff --git a/lv_objx/lv_lmeter.c b/lv_objx/lv_lmeter.c
index adc5879f7..ec7956871 100644
--- a/lv_objx/lv_lmeter.c
+++ b/lv_objx/lv_lmeter.c
@@ -55,11 +55,14 @@ lv_obj_t * lv_lmeter_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor of line meter*/
     lv_obj_t * new_lmeter = lv_obj_create(par, copy);
     lv_mem_assert(new_lmeter);
+    if(new_lmeter== NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_lmeter);
 
     /*Allocate the line meter type specific extended data*/
     lv_lmeter_ext_t * ext = lv_obj_allocate_ext_attr(new_lmeter, sizeof(lv_lmeter_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
 
     /*Initialize the allocated 'ext' */
     ext->min_value = 0;
diff --git a/lv_objx/lv_mbox.c b/lv_objx/lv_mbox.c
index 7ecd1f7fb..004e5c41f 100644
--- a/lv_objx/lv_mbox.c
+++ b/lv_objx/lv_mbox.c
@@ -63,11 +63,15 @@ lv_obj_t * lv_mbox_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor message box*/
     lv_obj_t * new_mbox = lv_cont_create(par, copy);
     lv_mem_assert(new_mbox);
+    if(new_mbox == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_mbox);
 
     /*Allocate the message box type specific extended data*/
     lv_mbox_ext_t * ext = lv_obj_allocate_ext_attr(new_mbox, sizeof(lv_mbox_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->text = NULL;
     ext->btnm = NULL;
     ext->anim_time = LV_MBOX_CLOSE_ANIM_TIME;
diff --git a/lv_objx/lv_page.c b/lv_objx/lv_page.c
index 28e8aeae9..4dff3b2f0 100644
--- a/lv_objx/lv_page.c
+++ b/lv_objx/lv_page.c
@@ -60,12 +60,16 @@ lv_obj_t * lv_page_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor object*/
     lv_obj_t * new_page = lv_cont_create(par, copy);
     lv_mem_assert(new_page);
+    if(new_page == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_page);
     if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_page);
 
     /*Allocate the object type specific extended data*/
     lv_page_ext_t * ext = lv_obj_allocate_ext_attr(new_page, sizeof(lv_page_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->scrl = NULL;
     ext->pr_action = NULL;
     ext->rel_action = NULL;
diff --git a/lv_objx/lv_preload.c b/lv_objx/lv_preload.c
index 78043b0a8..6df95c3a5 100644
--- a/lv_objx/lv_preload.c
+++ b/lv_objx/lv_preload.c
@@ -58,10 +58,13 @@ lv_obj_t * lv_preload_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor of pre loader*/
     lv_obj_t * new_preload = lv_arc_create(par, copy);
     lv_mem_assert(new_preload);
+    if(new_preload == NULL) return NULL;
 
     /*Allocate the pre loader type specific extended data*/
     lv_preload_ext_t * ext = lv_obj_allocate_ext_attr(new_preload, sizeof(lv_preload_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_preload);
     if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_preload);
 
diff --git a/lv_objx/lv_roller.c b/lv_objx/lv_roller.c
index 4614c28ad..0ae8a179c 100644
--- a/lv_objx/lv_roller.c
+++ b/lv_objx/lv_roller.c
@@ -63,12 +63,15 @@ lv_obj_t * lv_roller_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor of roller*/
     lv_obj_t * new_roller = lv_ddlist_create(par, copy);
     lv_mem_assert(new_roller);
+    if(new_roller == NULL) return NULL;
+
     if(ancestor_scrl_signal == NULL) ancestor_scrl_signal = lv_obj_get_signal_func(lv_page_get_scrl(new_roller));
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_roller);
 
     /*Allocate the roller type specific extended data*/
     lv_roller_ext_t * ext = lv_obj_allocate_ext_attr(new_roller, sizeof(lv_roller_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
 
     /*The signal and design functions are not copied so set them here*/
     lv_obj_set_signal_func(new_roller, lv_roller_signal);
diff --git a/lv_objx/lv_slider.c b/lv_objx/lv_slider.c
index 5d907d0f8..835207a42 100644
--- a/lv_objx/lv_slider.c
+++ b/lv_objx/lv_slider.c
@@ -56,6 +56,7 @@ lv_obj_t * lv_slider_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor slider*/
     lv_obj_t * new_slider = lv_bar_create(par, copy);
     lv_mem_assert(new_slider);
+    if(new_slider == NULL) return NULL;
 
     if(ancestor_design_f == NULL) ancestor_design_f = lv_obj_get_design_func(new_slider);
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_slider);
@@ -63,6 +64,7 @@ lv_obj_t * lv_slider_create(lv_obj_t * par, lv_obj_t * copy)
     /*Allocate the slider type specific extended data*/
     lv_slider_ext_t * ext = lv_obj_allocate_ext_attr(new_slider, sizeof(lv_slider_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
 
     /*Initialize the allocated 'ext' */
     ext->action = NULL;
diff --git a/lv_objx/lv_sw.c b/lv_objx/lv_sw.c
index 48746d341..457986c99 100644
--- a/lv_objx/lv_sw.c
+++ b/lv_objx/lv_sw.c
@@ -53,12 +53,14 @@ lv_obj_t * lv_sw_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor of switch*/
     lv_obj_t * new_sw = lv_slider_create(par, copy);
     lv_mem_assert(new_sw);
+    if(new_sw == NULL) return NULL;
 
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_sw);
 
     /*Allocate the switch type specific extended data*/
     lv_sw_ext_t * ext = lv_obj_allocate_ext_attr(new_sw, sizeof(lv_sw_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
 
     /*Initialize the allocated 'ext' */
     ext->changed = 0;
diff --git a/lv_objx/lv_ta.c b/lv_objx/lv_ta.c
index 51f0e14f1..9b6e54e73 100644
--- a/lv_objx/lv_ta.c
+++ b/lv_objx/lv_ta.c
@@ -77,6 +77,8 @@ lv_obj_t * lv_ta_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor object*/
     lv_obj_t * new_ta = lv_page_create(par, copy);
     lv_mem_assert(new_ta);
+    if(new_ta == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_ta);
     if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_ta);
     if(scrl_signal == NULL) scrl_signal = lv_obj_get_signal_func(lv_page_get_scrl(new_ta));
@@ -85,6 +87,8 @@ lv_obj_t * lv_ta_create(lv_obj_t * par, lv_obj_t * copy)
     /*Allocate the object type specific extended data*/
     lv_ta_ext_t * ext = lv_obj_allocate_ext_attr(new_ta, sizeof(lv_ta_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->cursor.state = 0;
     ext->pwd_mode = 0;
     ext->pwd_tmp = NULL;
@@ -185,6 +189,7 @@ void lv_ta_add_char(lv_obj_t * ta, char c)
 
         ext->pwd_tmp = lv_mem_realloc(ext->pwd_tmp, strlen(ext->pwd_tmp) + 2);  /*+2: the new char + \0 */
         lv_mem_assert(ext->pwd_tmp);
+        if(ext->pwd_tmp== NULL) return;
         lv_txt_ins(ext->pwd_tmp, ext->cursor.pos, letter_buf);
 
 #if USE_LV_ANIMATION
@@ -227,6 +232,7 @@ void lv_ta_add_text(lv_obj_t * ta, const char * txt)
     if(ext->pwd_mode != 0) {
         ext->pwd_tmp = lv_mem_realloc(ext->pwd_tmp, strlen(ext->pwd_tmp) + strlen(txt) + 1);
         lv_mem_assert(ext->pwd_tmp);
+        if(ext->pwd_tmp == NULL) return;
 
         lv_txt_ins(ext->pwd_tmp, ext->cursor.pos, txt);
 
@@ -285,6 +291,7 @@ void lv_ta_del_char(lv_obj_t * ta)
 #endif
         ext->pwd_tmp = lv_mem_realloc(ext->pwd_tmp, strlen(ext->pwd_tmp) + 1);
         lv_mem_assert(ext->pwd_tmp);
+        if(ext->pwd_tmp == NULL) return;
     }
 
     /*Move the cursor to the place of the deleted character*/
@@ -441,6 +448,9 @@ void lv_ta_set_pwd_mode(lv_obj_t * ta, bool pwd_en)
         char * txt = lv_label_get_text(ext->label);
         uint16_t len = strlen(txt);
         ext->pwd_tmp = lv_mem_alloc(len + 1);
+        lv_mem_assert(ext->pwd_tmp);
+        if(ext->pwd_tmp == NULL) return;
+
         strcpy(ext->pwd_tmp, txt);
 
         uint16_t i;
diff --git a/lv_objx/lv_tabview.c b/lv_objx/lv_tabview.c
index ffd1dd496..23786c693 100644
--- a/lv_objx/lv_tabview.c
+++ b/lv_objx/lv_tabview.c
@@ -69,11 +69,13 @@ lv_obj_t * lv_tabview_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor of tab*/
     lv_obj_t * new_tabview = lv_obj_create(par, copy);
     lv_mem_assert(new_tabview);
+    if(new_tabview == NULL) return NULL;
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_tabview);
 
     /*Allocate the tab type specific extended data*/
     lv_tabview_ext_t * ext = lv_obj_allocate_ext_attr(new_tabview, sizeof(lv_tabview_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
 
     /*Initialize the allocated 'ext' */
     ext->drag_hor = 0;
@@ -87,15 +89,19 @@ lv_obj_t * lv_tabview_create(lv_obj_t * par, lv_obj_t * copy)
     ext->btns = NULL;
     ext->tab_load_action = NULL;
     ext->anim_time = LV_TABVIEW_ANIM_TIME;
-    ext->tab_name_ptr = lv_mem_alloc(sizeof(char *));
-    ext->tab_name_ptr[0] = "";
-    ext->tab_cnt = 0;
+
 
     /*The signal and design functions are not copied so set them here*/
     lv_obj_set_signal_func(new_tabview, lv_tabview_signal);
 
     /*Init the new tab tab*/
     if(copy == NULL) {
+    	 ext->tab_name_ptr = lv_mem_alloc(sizeof(char *));
+		lv_mem_assert(ext->tab_name_ptr);
+		if(ext->tab_name_ptr == NULL) return NULL;
+		ext->tab_name_ptr[0] = "";
+		ext->tab_cnt = 0;
+
         lv_obj_set_size(new_tabview, LV_HOR_RES, LV_VER_RES);
 
         ext->btns = lv_btnm_create(new_tabview, NULL);
@@ -144,6 +150,8 @@ lv_obj_t * lv_tabview_create(lv_obj_t * par, lv_obj_t * copy)
         ext->tab_load_action = copy_ext->tab_load_action;
 
         ext->tab_name_ptr = lv_mem_alloc(sizeof(char *));
+        lv_mem_assert(ext->tab_name_ptr);
+        if(ext->tab_name_ptr == NULL) return NULL;
         ext->tab_name_ptr[0] = "";
         lv_btnm_set_map(ext->btns, ext->tab_name_ptr);
 
@@ -205,9 +213,13 @@ lv_obj_t * lv_tabview_add_tab(lv_obj_t * tabview, const char * name)
     char * name_dm;
     if((name[0] & LV_BTNM_CTRL_MASK) == LV_BTNM_CTRL_CODE) { /*If control byte presented let is*/
         name_dm = lv_mem_alloc(strlen(name) + 1); /*+1 for the the closing '\0' */
+        lv_mem_assert(name_dm);
+        if(name_dm == NULL) return NULL;
         strcpy(name_dm, name);
     } else { /*Set a no long press control byte is not presented*/
         name_dm = lv_mem_alloc(strlen(name) + 2); /*+1 for the the closing '\0' and +1 for the control byte */
+        lv_mem_assert(name_dm);
+        if(name_dm == NULL) return NULL;
         name_dm[0] = '\221';
         strcpy(&name_dm[1], name);
     }
diff --git a/lv_objx/lv_win.c b/lv_objx/lv_win.c
index 23546938c..b3ab5f166 100644
--- a/lv_objx/lv_win.c
+++ b/lv_objx/lv_win.c
@@ -49,11 +49,15 @@ lv_obj_t * lv_win_create(lv_obj_t * par, lv_obj_t * copy)
     /*Create the ancestor object*/
     lv_obj_t * new_win = lv_obj_create(par, copy);
     lv_mem_assert(new_win);
+    if(new_win == NULL) return NULL;
+
     if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_win);
 
     /*Allocate the object type specific extended data*/
     lv_win_ext_t * ext = lv_obj_allocate_ext_attr(new_win, sizeof(lv_win_ext_t));
     lv_mem_assert(ext);
+    if(ext == NULL) return NULL;
+
     ext->page = NULL;
     ext->header = NULL;
     ext->title = NULL;