UART RX Interrupt Problem

Hi,

I am working on Uart rx interrupt.I send the data through terminal,then my code receive the data and print on the console.

But my code problem is when i  send the data upto 15 bytes but reads upto 8 bytes only,if i change the buffer size in uart  receiver settings morethan 8 bytes than

the my code always executes the interrupt only ,i.e it is not coming out from interrupt.

so,please help me to resolve the issue.

Thanks in advance.

please find the attachment