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In free_area_init(), we will continue to run after allocation of memoryless node pgdat fails. However, in the subsequent process (such as when initializing zonelist), the case that NODE_DATA(nid) is NULL is not handled, which will cause panic. Instead of this, it's better to call panic() directly when the memory allocation fails during system boot. Link: https://lkml.kernel.org/r/20230212111027.95520-1-zhengqi.arch@bytedance.com Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>