On Sun, 5 Jul 2020 21:13:52 +0800, 孙世龙 sunshilong wrote: >I apologize for not posting the related error message at the beginning: >"watchdog: BUG: soft lockup - CPU#0 stuck for 22s!" Seemingly a non-maskable interrupt stalls the CPU. Maskable interrupts could be disabled, while non-maskable interrupts can't be ignored. It likely is caused by a hardware error.