Thank you @jdstrand @zyga for all your help in resolving this persky
problem. Kudos!
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https://bugs.launchpad.net/bugs/1760416
Title:
dropping privs did not work: Invalid argument
To
"I suspect that /etc/passwd has:
ubuntu:x:1000:0::/home/arky:/bin/bash
Adjust that to be:
ubuntu:x:1000:1000::/home/arky:/bin/bash"
That should've read:
I suspect that /etc/passwd has:
arky:x:1000:0::/home/arky:/bin/bash
Adjust that to be:
arky:x:1000:1000::/home/arky:/bin/bash
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You
@Daan your issue is different and specific to snapcraft. I suggest you
file a bug at https://bugs.launchpad.net/snapcraft/+filebug
** Changed in: snapd (Ubuntu)
Status: New => Invalid
** Changed in: snapd (Ubuntu)
Assignee: Zygmunt Krynicki (zyga) => (unassigned)
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@arky, you should take a look at /etc/passwd and /etc/group. Typically
your regular account will have its own group. Eg:
In /etc/passwd, a typical user will have:
$ grep ubuntu /etc/passwd
ubuntu:x:1000:1000:Ubuntu:/home/ubuntu:/bin/bash
$ grep 1000 /etc/group
ubuntu:x:1000:
You should verify
This is only account on this laptop. It was created such a long time
back. What is the best way to de-escalate the permissions.
$ id ; id -ru ; id -rg ; id -rG
uid=1000(arky) gid=0(root) groups=0(root)
1000
0
0
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@arky and @zyga:
Notice: uid=1000(arky) gid=0(root) groups=0(root)
It seems at the time you are running a snap command that you are not a
regular user. Please also give the output of:
$ id ; id -ru ; id -rg ; id -rG
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for me this happened when I was running the example commands from [1] as
root:
mkdir test-snapcraft
cd test-snapcraft
snapcraft init
snapcraft cleanbuild
[1] https://docs.snapcraft.io/build-snaps/get-started-snapcraft
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$ snap install vlc
vlc 3.0.1-4-g14a4897 from 'videolan' installed
$ vlc
dropping privs did not work: Invalid argument
$ sudo journalctl | grep audit > errors.txt
Mar 30 19:02:53 think kernel: audit: type=1400 audit(1522411373.004:5):
apparmor="STATUS" operation="profile_load"
Are security policy denials? Please paste the output of after trying to run a
snap:
$ sudo journalctl | grep audit
What is the output of:
$ set|grep 'USER.*=' ; id
What is the output of (it should return nothing):
$ getcap /usr/lib/snapd/snap-confine
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No, that's all fine. It should not cause any issues.
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Title:
dropping privs did not work: Invalid argument
To manage notifications about this
@zyga, As a snap newbie, I used 'sudo snap install'. Perhaps that must
have screwed up the snapd setup.
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Title:
dropping privs did not work:
Hmm, this looks correct. I have no idea what happened. When did this
start failing? Did you do anything interesting to your system lately?
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Title:
$ ls -ld /usr/lib/snapd/snap-confine
-rwsr-sr-x 1 root root 88632 Nov 30 23:42 /usr/lib/snapd/snap-confine
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Title:
dropping privs did not work:
Dear reporter, can you please attach some more information:
ls -ld /usr/lib/snapd/snap-confine
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Title:
dropping privs did not work: Invalid
** Changed in: snapd (Ubuntu)
Assignee: (unassigned) => Zygmunt Krynicki (zyga)
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Title:
dropping privs did not work: Invalid argument
To
Adding additional Information missing in the main bug report.
$ snap version
snap2.31.2
snapd 2.31.2
series 16
ubuntu 17.10
kernel 4.13.0-37-generic
$ snap list
Name Version Rev Developer Notes
core 16-2.31.2 4206 canonical core
vlc 3.0.1-4-g14a4897 190
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