[Pkg-utopia-maintainers] Bug#1042479: avahi-daemon[…]: chroot.c: open() failed: No such file or directory

Al Ma alma1 at ro.ru
Sat Jul 29 01:24:12 BST 2023 

Package: avahi-daemon
Version: 0.8-10
In my journal.conf, we see this:
Jul 29 00:10:33 AnonymizedMachineName avahi-daemon[712]: Found user 'avahi' (UID 107) and group 'avahi' (GID 117).
Jul 29 00:10:33 AnonymizedMachineName avahi-daemon[712]: Successfully dropped root privileges.
Jul 29 00:10:33 AnonymizedMachineName avahi-daemon[712]: avahi-daemon 0.8 starting up.
Jul 29 00:10:33 AnonymizedMachineName systemd[1]: Starting lm-sensors.service - Initialize hardware monitoring sensors...
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Started low-memory-monitor.service - Low Memory Monitor.
Jul 29 00:10:34 AnonymizedMachineName /usr/sbin/gpm[721]: *** info [daemon/startup.c(131)]:
Jul 29 00:10:34 AnonymizedMachineName /usr/sbin/gpm[721]: Started gpm successfully. Entered daemon mode.
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Starting polkit.service - Authorization Manager...
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Starting power-profiles-daemon.service - Power Profiles daemon...
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Starting rsyslog.service - System Logging Service...
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Starting rtkit-daemon.service - RealtimeKit Scheduling Policy Service...
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Starting smartmontools.service - Self Monitoring and Reporting Technology (SMART) Daemon...
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Starting sysfsutils.service - LSB: Set sysfs variables from /etc/sysfs.conf...
Jul 29 00:10:34 AnonymizedMachineName polkitd[723]: Started polkitd version 122
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Starting systemd-logind.service - User Login Management...
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Starting udisks2.service - Disk Manager...
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Mounted run-rpc_pipefs.mount - RPC Pipe File System.
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Reached target rpc_pipefs.target.
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: rpc-gssd.service - RPC security service for NFS client and server was skipped because of an unmet condition check (ConditionPathExists=/etc/krb5.keytab).
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Reached target nfs-client.target - NFS client services.
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Reached target remote-fs-pre.target - Preparation for Remote File Systems.
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Reached target remote-fs.target - Remote File Systems.
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Starting atd.service - Deferred execution scheduler...
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Started cron.service - Regular background program processing daemon.
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: systemd-pcrphase.service - TPM2 PCR Barrier (User) was skipped because of an unmet condition check (ConditionPathExists=/sys/firmware/efi/efivars/StubPcrKernelImage-SomeLongUUID).
Jul 29 00:10:34 AnonymizedMachineName rsyslogd[726]: imuxsock: Acquired UNIX socket '/run/systemd/journal/syslog' (fd 3) from systemd.  [v8.2302.0]
Jul 29 00:10:34 AnonymizedMachineName rsyslogd[726]: [origin software="rsyslogd" swVersion="8.2302.0" x-pid="726" x-info="https://www.rsyslog.com"] start
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Started rsyslog.service - System Logging Service.
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: coretemp-isa-0000
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Adapter: ISA adapter
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Package id 0:  +78.0°C  (high = +87.0°C, crit = +105.0°C)
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Core 0:        +75.0°C  (high = +87.0°C, crit = +105.0°C)
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Core 1:        +77.0°C  (high = +87.0°C, crit = +105.0°C)
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Core 2:        +78.0°C  (high = +87.0°C, crit = +105.0°C)
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Core 3:        +75.0°C  (high = +87.0°C, crit = +105.0°C)
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: radeon-pci-0100
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Adapter: PCI adapter
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: temp1:        +58.0°C  (crit = +120.0°C, hyst = +90.0°C)
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: acpitz-acpi-0
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Adapter: ACPI interface
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: temp1:        +61.5°C  (crit = +107.0°C)
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: dell_smm-isa-0000
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Adapter: ISA adapter
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Processor Fan:    0 RPM  (min =    0 RPM, max = 4900 RPM)
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Video Fan:        0 RPM  (min =    0 RPM, max = 4900 RPM)
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: CPU:            +77.0°C
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Ambient:        +48.0°C
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Ambient:        +49.0°C
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: SODIMM:         +45.0°C
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: SODIMM:         +44.0°C
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: SODIMM:         +44.0°C
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: GPU:            +54.0°C
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: BAT0-acpi-0
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: Adapter: ACPI interface
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: in0:          10.39 V
Jul 29 00:10:34 AnonymizedMachineName sensors[741]: curr1:         3.40 A
Jul 29 00:10:34 AnonymizedMachineName cron[746]: (CRON) INFO (pidfile fd = 3)
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Finished lm-sensors.service - Initialize hardware monitoring sensors.
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Started atd.service - Deferred execution scheduler.
Jul 29 00:10:34 AnonymizedMachineName cron[746]: (CRON) INFO (Running @reboot jobs)
Jul 29 00:10:34 AnonymizedMachineName smartd[728]: smartd 7.3 2022-02-28 r5338 [x86_64-linux-6.1.0-10-amd64] (local build)
Jul 29 00:10:34 AnonymizedMachineName smartd[728]: Copyright (C) 2002-22, Bruce Allen, Christian Franke, https://www.smartmontools.org www.smartmontools.org
Jul 29 00:10:34 AnonymizedMachineName udisksd[738]: udisks daemon version 2.9.4 starting
Jul 29 00:10:34 AnonymizedMachineName smartd[728]: Opened configuration file /etc/smartd.conf
Jul 29 00:10:34 AnonymizedMachineName smartd[728]: Drive: DEVICESCAN, implied '-a' Directive on line 21 of file /etc/smartd.conf
Jul 29 00:10:34 AnonymizedMachineName smartd[728]: Configuration file /etc/smartd.conf was parsed, found DEVICESCAN, scanning devices
Jul 29 00:10:34 AnonymizedMachineName bluetoothd[713]: Bluetooth daemon 5.66
Jul 29 00:10:34 AnonymizedMachineName smartd[728]: Device: /dev/sda, type changed from 'scsi' to 'sat'
Jul 29 00:10:34 AnonymizedMachineName smartd[728]: Device: /dev/sda [SAT], opened
Jul 29 00:10:34 AnonymizedMachineName smartd[728]: Device: /dev/sda [SAT], SAMSUNG SSD PM830 2.5" 7mm 512GB, S/N:SerialNumberOne, WWN:SerialNumberTwo, FW:SerialNumberThree, 512 GB
Jul 29 00:10:34 AnonymizedMachineName systemd[1]: Started dbus.service - D-Bus System Message Bus.
Jul 29 00:10:34 AnonymizedMachineName smartd[728]: Device: /dev/sda [SAT], found in smartd database 7.3/5319: Samsung based SSDs
Jul 29 00:10:34 AnonymizedMachineName rtkit-daemon[727]: Successfully called chroot.
Jul 29 00:10:34 AnonymizedMachineName rtkit-daemon[727]: Successfully dropped privileges.
Jul 29 00:10:34 AnonymizedMachineName rtkit-daemon[727]: Successfully limited resources.
Jul 29 00:10:34 AnonymizedMachineName rtkit-daemon[727]: Canary thread running.
Jul 29 00:10:34 AnonymizedMachineName rtkit-daemon[727]: Running.
Jul 29 00:10:34 AnonymizedMachineName rtkit-daemon[727]: Watchdog thread running.
Jul 29 00:10:34 AnonymizedMachineName avahi-daemon[712]: Successfully called chroot().
Jul 29 00:10:34 AnonymizedMachineName avahi-daemon[712]: Successfully dropped remaining capabilities.
Jul 29 00:10:34 AnonymizedMachineName avahi-daemon[717]: chroot.c: open() failed: No such file or directory
Jul 29 00:10:34 AnonymizedMachineName avahi-daemon[712]: Failed to open /etc/resolv.conf: Invalid argument
The text “chroot.c: open() failed: No such file or directory” in the last but one line is red, i.e., indicates an error.  The text “Failed to open /etc/resolv.conf: Invalid argument” is yellow, i.e., indicates a warning.  From a high level, what went wrong, and how do we recover from this?  Further, I'd welcome it if the errors and warnings contain a bit more data here (unless sensitive stuff gets disclosed) because, as of now, we neither know which file was tried to be opened nor which which argument to which program (resolv.conf is not a program) was invalid.
Gratefully,
AlMa
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