SIGSEGV in Java_com_fazecast_jSerialComm_SerialPort_setEventListeningStatus+0x4

[HanyzPAPU]

Called from Thread.run() in SerialPortEventListener.startListening().

jSerialComm/src/main/java/com/fazecast/jSerialComm/SerialPort.java

Line 2098 in ff8a78f

setEventListeningStatus(portHandle, false);

Looks like there's a race with closing the port or shutting down, that the portHandle is set to 0 before the native code is called.
The native code then dereferences the null pointer here:

jSerialComm/src/main/c/Posix/SerialPort_Posix.c

Line 1091 in ff8a78f

port->eventListenerRunning = eventListenerRunning;

[HanyzPAPU]

I think it can happen if SerialPort.closePort() is called from the user event handler. The wait for the event thread is bypassed, the port is closed and portHandle set to 0, and after that the event thread exits its loop and tries to call setEventListeningStatus(portHandle, false);.

[HanyzPAPU]

I see that it is fixed for LISTENING_EVENT_PORT_DISCONNECTED in 5966a40, but it can still happen for other events.