debug: 0.735 graphic: 0.711 device: 0.676 other: 0.658 performance: 0.600 semantic: 0.539 files: 0.499 network: 0.458 socket: 0.456 vnc: 0.402 PID: 0.368 permissions: 0.315 KVM: 0.175 boot: 0.175 QEMU crash after send data from Host through serial port Hi All I have two computer, one is Win7 32 another is Win7 64, Both computer meet this issue. My QEMU version is qemu-w32-setup-20160215 I want used EDK2 OVMF with Intel UDK Debugger tools to do source level debug I had install com0com Virtual Com Port, and set COM3 connect to COM4 Intel UDK Debugger tools used COM3 QEMU run OVMF used COM4 First execute Intel UDK Debugger tools, then launch QEMU C:\Program Files\qemu\qemu-system-x86_64.exe -bios "C:\EDK2\Build\OvmfX64\DEBUG_VS2010\FV\OVMF.fd" -serial COM4 Then QEMU crashes on stratup I have do some experiment Execute terminal tool Tera Term and used COM3 launch QEMU and used COM4 C:\Program Files\qemu\qemu-system-x86_64.exe -bios "C:\EDK2\Build\OvmfX64\DEBUG_VS2010\FV\OVMF.fd" -serial COM4 This is fine and i can see OVMF trace log on terminal But if i press "Down" key on terminal, then QEMU crashe It's caused by terminal send data("Down" key) to QEMU Have somebody can share some information about this? Thanks a lot. Sugar Looking through old bug tickets... can you still reproduce this issue with the latest version of QEMU? Or could we close this ticket nowadays? [Expired for QEMU because there has been no activity for 60 days.]