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InstrFetchProhibited usually occurs because of a jump to an invalid pointer. In this case, PC in the exception frame is the address of the jump destination. 'esp_ptr_executable' check in print_backtrace function recognizes the first frame as invalid, and the backtrace is interrupted. This prevents the user from finding the location where the invalid pointer is dereferenced. Bypass the 'esp_ptr_executable' check if the exception cause is InstrFetchProhibited. Update the test case to no longer ignore this issue.