Public bug reported:
1) root@fry:~# lsb_release -rd
Description: Ubuntu 20.10
Release: 20.10
2) root@fry:~# apt-cache policy linux-image-raspi
linux-image-raspi:
Installed: 5.8.0.1011.14
[...]
3) Nothing
4) On a Raspberry Pi 4 Rev 1.4 8GB, the kernel panics if you read the
/sys/kernel/debug/regmap/dummy-avs-monitor@7d5d2000/registers file. You
find a screenshot attached. Unfortunately, I don't have a serial adaptor
at hand, and I didn't get netconsole working right now.
ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: linux-image-raspi 5.8.0.1011.14
ProcVersionSignature: Ubuntu 5.8.0-1011.14-raspi 5.8.18
Uname: Linux 5.8.0-1011-raspi aarch64
AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.8.0-1011-raspi.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.11-0ubuntu50.3
Architecture: arm64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/controlC1', '/dev/snd/pcmC1D0p', '/dev/snd/controlC0',
'/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
CasperMD5CheckResult: skip
Date: Fri Jan 22 11:29:32 2021
ImageMediaBuild: 20201022
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lspci-vt: -[0000:00]---00.0-[01]----00.0 VIA Technologies, Inc. VL805 USB 3.0
Host Controller
Lsusb:
Bus 002 Device 002: ID 0781:558c SanDisk Corp. Extreme Portable SSD
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 046d:c31d Logitech, Inc. Media Keyboard K200
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
PciMultimedia:
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
ProcFB: 0 BCM2708 FB
ProcKernelCmdLine: coherent_pool=1M 8250.nr_uarts=1
snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1
snd_bcm2835.enable_headphones=1 bcm2708_fb.fbwidth=1920
bcm2708_fb.fbheight=1080 bcm2708_fb.fbswap=1 smsc95xx.macaddr=DC:A6:32:E2:2A:BE
vc_mem.mem_base=0x3eb00000 vc_mem.mem_size=0x3ff00000 dwc_otg.lpm_enable=0
console=ttyS0,115200 console=tty1 root=LABEL=writable rootfstype=ext4
elevator=deadline rootwait fixrtc quiet splash
RelatedPackageVersions:
linux-restricted-modules-5.8.0-1011-raspi N/A
linux-backports-modules-5.8.0-1011-raspi N/A
linux-firmware 1.190.3
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux-raspi
StagingDrivers: bcm2835_v4l2 bcm2835_mmal_vchiq bcm2835_codec bcm2835_isp
snd_bcm2835 vc_sm_cma
UpgradeStatus: No upgrade log present (probably fresh install)
acpidump:
** Affects: linux-raspi (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug arm64 groovy staging
** Attachment added: "Panic"
https://bugs.launchpad.net/bugs/1912772/+attachment/5455614/+files/Screenshot%202021-01-22%20at%2012.55.01.png
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https://bugs.launchpad.net/bugs/1912772
Title:
Panic on sysfs read
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