Dan, that was helpful because I found kernel 6.12.57+deb13-amd64 in the boot options and have been running that version three days with no crashing. The version I'm having a regression with is 6.12.63.To try to narrow the problem down more before filing a bug I was going to connect a kernel debugger, get symbols lined up and wait for it to crash and hopefully find the culprit in the stack trace. But on https://www.kernel.org/doc/html/v4.14/dev-tools/kgdb.html it shows only serial bus for debugging and the debugger machine doesn't have a serial port. It has a network jack and USB. is there another reliable (it stays connected) way to connect a KD besides over serial?