Hello everyone, Recently when I reboot my guest installed kernel 4.4.114, qemu-kvm throws the error
qemu-kvm: hw/char/serial.c:232: serial_xmit: Assertion `!(s->lsr & 0x40)' failed. shutting down then qemu-kvm powers off the VM, I can meet the issue after a lot of time to reboot the VM. The issue looks like to be reproduced more easily by increasing the loglevel to make kernel throws more log to the console. It seems I did not meet the issue with guest installed kernel 3.0. There is another thread of Redhat about this bug but looks like they cannot reproduce the issue and just provide the potential fix https://bugzilla.redhat.com/show_bug.cgi?id=1481701. I used the same qemu version with Redhat thread, qemu 2.6 qemu-kvm-rhev-2.6.0-28.el7_3.9.x86_64. My guest xml setup is to redirect the console to file. I used the same config between guest kernel 3.0 and 4.4. Could you please help me to understand more about this issue: - In what conditions can make qemu-kvm trigger this issue like: guest console hangs or guest output to console too much? - Why I just see the issue on guest installed kernel 4.4, not on kernel 3.0? Thanks a lot, Brs, Naruto
