On 23/11/2022 04:11, Samuel Thibault wrote:
Arnaud Rebillout, le lun. 21 nov. 2022 15:52:47 +0700, a ecrit:
It's fairly easy to reproduce, for me it crashes every time, although it
doesn't always crash at the same moment of the installation. The exact
moment when it crashes seems quite unpredictable.
Note that I'm running the iso in a QEMU VM on an up-to-date Debian Sid,
so that's qemu-system-x86 7.1+dfsg-2+b2 and linux-image-amd64 6.0.8-1,
in case it matters.
Every detail can matter. Since it's in a vm, normally one should be able
to reproduce it, but it seems I can't. So please provide all details:
- how exactly you start the VM, notably which audio device do you use
My command is:
kvm -m 4G -cpu host \
-device e1000,netdev=net0 \
-netdev user,id=net0,hostfwd=tcp::10022-:22,hostfwd=tcp::3389-:3389 \
-device intel-hda \
-device hda-duplex \
-spice port=5930,disable-ticketing=on \
-device virtio-serial \
-device virtserialport,chardev=vdagent,name=com.redhat.spice.0 \
-chardev spicevmc,debug=0,id=vdagent,name=vdagent \
-vga qxl \
-virtfs local,mount_tag=home,path=/home/arno,security_model=none \
-drive file=debian-testing-amd64-netinst.img,format=raw \
-boot d -cdrom debian-testing-amd64-netinst.iso
I use remote-viewer and SPICE protocol to interact with the VM.
- during installation, which choices do you make that depart from the
default value (language, tasks, etc.)
No choices, I just press Enter and stick with the defaults.
Maybe of interest, I see some errror messages in /var/log/syslog, after
I confirm the second screen. Here's a good chunk of logs for context,
the actual errors are the lines with "main-menu[527]: (process:xxxx):":
Nov 23 00:55:38 debconf: Setting debconf/language to en
Nov 23 00:55:38 main-menu[527]: INFO: Falling back to the package
description for brltty-udeb
Nov 23 00:55:38 main-menu[527]: INFO: Menu item 'localechooser' selected
Nov 23 00:55:40 debconf: Setting debconf/language to en
Nov 23 00:55:47 init: starting pid 507, tty '/dev/tty2': '-/bin/sh'
Nov 23 00:56:05 localechooser: info: Language = 'en'
Nov 23 00:56:05 localechooser: info: line=en;0;US;en_US.UTF-8;;console-setup
Nov 23 00:56:05 localechooser: info: Set debian-installer/language = 'en'
Nov 23 00:56:05 localechooser: info: Default country = 'US'
Nov 23 00:56:05 localechooser: info: Default locale = 'en_US.UTF-8'
Nov 23 00:56:05 localechooser: info: Set debian-installer/consoledisplay
= 'console-setup'
Nov 23 00:56:05 debconf: Setting debconf/language to en
Nov 23 00:56:08 localechooser: info: Set debian-installer/country = 'US'
Nov 23 00:56:08 localechooser: info: Set debian-installer/locale =
'en_US.UTF-8'
Nov 23 00:56:08 localechooser: info: System locale
(debian-installer/locale) = 'en_US.UTF-8'
Nov 23 00:56:08 main-menu[527]: (process:538): ls:
/usr/share/mbrola/en[1-9]/en[1-9]: No such file or directory
Nov 23 00:56:08 main-menu[527]: (process:538): sh: missing ]
Nov 23 00:56:08 main-menu[527]: (process:538): ls:
/usr/share/mbrola/en[1-9]/en[1-9]: No such file or directory
Nov 23 00:56:08 main-menu[527]: (process:538): sh: missing ]
Nov 23 00:56:08 main-menu[527]: INFO: Falling back to the package
description for brltty-udeb
Nov 23 00:56:08 main-menu[527]: INFO: Falling back to the package
description for brltty-udeb
Nov 23 00:56:08 main-menu[527]: INFO: Falling back to the package
description for brltty-udeb
Nov 23 00:56:08 main-menu[527]: INFO: Menu item 'brltty-udeb' selected
Nov 23 00:56:08 main-menu[527]: WARNING **: Unable to set title for
brltty-udeb.
Nov 23 00:56:08 main-menu[527]: INFO: Falling back to the package
description for brltty-udeb
Nov 23 00:56:08 main-menu[527]: INFO: Falling back to the package
description for brltty-udeb
Nov 23 00:56:08 main-menu[527]: INFO: Menu item 'espeakup-udeb' selected
Nov 23 00:56:10 main-menu[527]: (process:1753): ls:
/usr/share/mbrola/en[1-9]/en[1-9]: No such file or directory
Nov 23 00:56:10 main-menu[527]: (process:1753): sh: missing ]
Nov 23 00:56:10 main-menu[527]: INFO: Falling back to the package
description for brltty-udeb
Nov 23 00:56:10 main-menu[527]: INFO: Falling back to the package
description for brltty-udeb
Nov 23 00:56:10 main-menu[527]: INFO: Menu item 'console-setup-udeb'
selected
The errors related to mbrola and sh come from
debian/espeakup-udeb.restart in src:espeakup. I don't know if it's
relevant to the issue at hand though.
Yes, I really doubt the bug is in espeakup (or pcaudiolib) itself since
these functions are really deep inside alsa, but we have to investigate
to be sure about it.
Just to confirm, I grabbed the debian-testing-amd64-netinst.iso from
today (2022-11-22) and I can confirm that I can still reproduce the issue.
Another interesting detail is that restarting espeakup makes it speaks
again, like if nothing happens. So I think it could be useful to have
something monitor the daemon and restart it in case it crashes. Would
make it more reliable overall, I suppose. Unfortunately I'm not familiar
with d-i and I couldn't even find from *where* espeakup is started (no
etc/init.d, no systemd).
Cheers,
--
Arnaud Rebillout / Offensive Security / Kali Linux Developer
