[Pkg-utopia-maintainers] Bug#813803: Bug#813803: Bug#813803: network-manager: Network-manager update to 1.1.90-4 in unstable broken if resolvconf enabled

[Michael Biebl]

Control: clone -1
Control: reassign -1 openresolv
Control: retitle -1  restarting non-existing services leads to failure
Control: found -1 3.7.2-1

Am 02/05/2016 um 07:00 PM schrieb Michael Biebl:
> Am 02/05/2016 um 06:26 PM schrieb Giacomo Mulas:

>> well, apparently either resolvconf does not work properly or NetworkManager
>> does not call it as it expects to be called, since it fails (from the debug
>> output of NetworkManager):

>> NetworkManager[26333]: <warn>  dns-mgr: resolvconf failed with status 3072
>> NetworkManager[26333]: <debug> [1454681100.577095]

So, I looked into this a bit more.
What NM does is, it opens a pipe to /sbin/resolvconf, and then pushes
the DNS information to that process.
You can simulate that by creating a tmp file and doing this by hand:

$ cat /tmp/dns
# test
search test
nameserver 192.168.179.1

$ cat /tmp/dns | /sbin/resolvconf -a NetworkManager
Failed to try-restart nscd.service: Unit nscd.service failed to load: No
such file or directory.
Failed to try-restart unbound.service: Unit unbound.service failed to
load: No such file or directory.

$ echo $?
6

$ cat /etc/resolv.conf
# Generated by resolvconf
search test
nameserver 192.168.179.1


As you can see, resolvconf returns a non-zero exit code, even though it
apparently has properly updated /etc/resolv.conf
That non-zero exit code is generated afaics, because resolvconf tries to
restart non-existing services and propagates that error to the caller.
It should handle that more carefully.
This is a bug in openresolv. I'm therefor cloning this bug report and
reassign it to openresolv.

The second bug is, that NetworkManager didn't handle that failure
(non-zero exit code) properly and segfaulted because of that.
This is fixed by the already mentioned patch.

I'll upload a fixed package this evening.

Regards,
Michael


-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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