This was fixed in snapd: https://github.com/snapcore/snapd/pull/8426
** Changed in: snapd
Status: Triaged => Fix Released
** Changed in: linux-raspi2 (Ubuntu Bionic)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1868894
Title:
[uc18] docker overlayfs* seems broken
Status in snapd:
Fix Released
Status in linux-raspi2 package in Ubuntu:
Confirmed
Status in linux-raspi2 source package in Bionic:
Invalid
Bug description:
A customer recently reported that 'sudo docker run hello-world' fails
on a pi3 or pi4 running UC18. Looking at the journal, the failure
appears to be caused by an apparmor denial related docker's overlay2
storage driver. I've tried both the unified and the Pi3 specific UC18
images and both fail with the same error. The same command works fine
on other devices running UC18 (I've tested multipass+macOS, and
dragonboard), and also works on a Pi3b running our standard UC16
image.
Here are the details from the UC18 image.
$ snap list
core 16-2.43.3 8691 stable canonical✓
core
core18 20200124 1673 stable canonical✓
base
docker 18.09.9 427 stable canonical✓ -
pi 18-1 27 18-pi canonical✓
gadget
pi-kernel 5.3.0-1019.21~18.04.1 104 18-pi canonical✓
kernel
snapd 2.43.3 6438 stable canonical✓
snapd
And here's the apparmor denial:
Mar 24 19:38:55 localhost sudo[3095]: awe : TTY=pts/0 ; PWD=/home/awe ;
USER=root ; COMMAND=/snap/bin/docker run hello-world
Mar 24 19:39:02 localhost audit[2932]: AVC apparmor="DENIED" operation="open"
profile="snap.docker.dockerd"
name="/system-data/var/snap/docker/common/var-lib-docker/overlay2/afce643d5ac2c31f46b8c867c35abea776166c6da199fab370c30af17d314fd7-init/diff/.dockerenv"
pid=2932 comm="dockerd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
I've been told this may end up being something that gets worked around
in snapd, however as this looks like a regression, I'm erring on the
side of caution and filing this bug anyways.
Please let me know if there's anything else I can provide.
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