DIRAC reported the following issue:

(7) AUDIO-AM275-EVM: fread() on AM275x C7x DSP via JTAG not returning expected data - Simulation, hardware & system design tools forum - Simulation, hardware & system design tools - TI E2E support forums

Because the CCS_DEBUG_LOG_MEM is defined before the MSRAM_BANK0_TO_BANK3, so its MAIR4 (non-cacheable) will be overwritten by the MSRAM_BANK0_TO_BANK3's MAIR7 (cacheable). CCS_DEBUG_LOG_MEM defined memory region will be used as C75_0_CIO_MEM in linker command file linker.cmd for host file IO. By set the C75_0_CIO_MEM to MAIR7 will cause the fread error. 

The above issue exists in hello_world_am275x-evm_c75ss0-0_freertos_ti-c7000 and hello_world_cpp_am275x-evm_c75ss0-0_freertos_ti-c7000, but it may exist for other C7x examples.