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virtual: 0.883
permissions: 0.818
boot: 0.800
device: 0.768
graphic: 0.766
semantic: 0.752
register: 0.752
PID: 0.748
architecture: 0.729
debug: 0.728
performance: 0.722
network: 0.708
TCG: 0.704
vnc: 0.698
assembly: 0.677
peripherals: 0.673
risc-v: 0.670
arm: 0.667
ppc: 0.628
VMM: 0.623
files: 0.572
user-level: 0.543
kernel: 0.541
socket: 0.534
KVM: 0.469
hypervisor: 0.421
x86: 0.402
mistranslation: 0.380
i386: 0.359
"-serial telnet::xxxx,server" causes "Device 'serial0' is in use"
I start qemu version 4.2.50 in a first terminal :
$ sudo ./qemu-system-hppa -boot d -serial telnet::4441,server -drive if=scsi,bus=0,index=6,file=./hpux.img,format=raw -serial mon:stdio -D /tmp/foo -nographic -m 512 -d nochain -cdrom ./HPUX_9.05_Installation_Disc_S700.iso -D /tmp/foo -net nic,model=tulip -net tap
qemu-system-hppa: -serial telnet::4441,server: info: QEMU waiting for connection on: disconnected:telnet:0.0.0.0:4441,server
In another terminal, I launch "telnet localhost 4441"
And in the qemu window I have the following error:
Unexpected error in qemu_chr_fe_init() at chardev/char-fe.c:220:
qemu-system-hppa: Device 'serial0' is in use
Try top put "-serial mon:stdio" before "-serial telnet::4441,server"
Effectively, no more error !
Now, my hppa machine is booted on its installation support for HP-UX 10.20, et I am connected with telnet in an other terminal. I don't know what I must enter now (on a real machine, the installation starts automatically, if I remember well what I did in 1990 !)
If I use an installation support HP-UX 11.00, the installation starts automatically. Then, it finds no disk for installation, but I will work on the drive option of qemu to resolve this trouble.
Thanks a lot for your help !
I would observe that it would be much better if the order of the -serial arguments did not matter so much. I know gcc has the same sort of madness (for instance), but it sure isn't intuitive.
But in my case, when you do the -serial things out of order, you end up with a segfault.
That can't be the intended behavior.
Yes, a segfault is definitely a bug. Can you give instructions to reproduce that (full command line, any necessary images) ? The example originally reported in this bug doesn't seem to be a segfault.
I'm now using qemu-system-hppa version 5.2.50, and I can put "-serial mon: stdio" before or after "-serial telnet :: 4441, server" without a problem.
#qemu-system-hppa --version
QEMU emulator version 5.2.50 (v5.2.0-1300-g0e32462630)
Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
For me, no more bug.
Ok, since you said that there is no more bug, I'm closing this issue now.
Reporting again. Compiled QEMU from the latest stable Git:
QEMU emulator version 6.2.50 (v6.2.0-529-gfb084237a3)
Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers
Exactly as original post, if I place -serial telnet::4441,server ahead of -serial mon,stdio on the command line, it dumps core and aborts.
if I flip them, it runs... BUT! The vm console output appears in the terminal where I launched qemu, I get no output in the telnet session. That's backwards. I have no access to the qemu console and can't issue commands to do things like change the CDROM.
full command startup script (this one works but output doesn't happen where I expect)
#!/bin/sh
CDROM="-cdrom HP-UX-OE-1.iso"
QEMU=/home/ascott/Documents/hpux/qemu/qemu/build/qemu-system-hppa
IMAGE=/home/ascott/Documents/hpux/hpux.img
$QEMU -boot d -serial mon:stdio -serial telnet::4441,server -drive if=scsi,bus=0,index=6,file=$IMAGE,format=raw -nographic -m 512 -d nochain $CDROM -net nic,model=tulip -net user
This one dumps core with the serial0 error from the originla post:
#!/bin/sh
CDROM="-cdrom HP-UX-OE-1.iso"
QEMU=/home/ascott/Documents/hpux/qemu/qemu/build/qemu-system-hppa
IMAGE=/home/ascott/Documents/hpux/hpux.img
$QEMU -boot d -serial telnet::4441,server -serial mon:stdio -drive if=scsi,bus=0,index=6,file=$IMAGE,format=raw -nographic -m 512 -d nochain $CDROM -net nic,model=tulip -net user
ascott@vmhost01:~/Documents/hpux$ sh ./install-hpux.sh
qemu-system-hppa: -serial telnet::4441,server: info: QEMU waiting for connection on: disconnected:telnet:0.0.0.0:4441,server=on
Unexpected error in qemu_chr_fe_init() at ../chardev/char-fe.c:220:
qemu-system-hppa: Device 'serial0' is in use
Aborted (core dumped)
Hi Andrew! The QEMU project does not use this bug tracker anymore - could you please open a new issue here: https://gitlab.com/qemu-project/qemu/-/issues - Thanks!
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