What does "cpu lock-up" mean? and how should i debug this issue?

[Tommy_Li]

Dear All:
            My board will reset some time, and i print the register "RESETREAS", and It's value is 8, the PS says it is "cpu lock up detected", Could anyone tell me what will cause that issue, How should i solve that problem?

            Thanks in advance

[Kenneth]

Hi, you should possible check your hardfault handler, for instance a hardfault within the hardfault handler may cause reset by CPU lockup.