Dear jeremyzhou,
Well, that's intriguing to say the least!
How to explain that the same demo project causes memory overflow on my side and it doesn't on yours?
Have you set code size optimization?
My MCUXpresso version is 10.1.0, but that shouldn't cause such a issue.
I will install MCUXpresso v. 10.2.0 and try again.
Best regards,
Marco Coelho
DFAE - Siletec Eletronica