Bug#759320: systemd fails to close user sessions with nonexistent home (nobody)

[Michael Biebl]

Am 26.08.2014 15:09, schrieb Nicolas George:
> Thanks for looking into it.
> 
> Le nonidi 9 fructidor, an CCXXII, Michael Biebl a écrit :
>> I still get those error messages with v214 but it seems the session is
>> cleaned up properly. I do no longer have any (sd-pam) processes for that
>> user and no delay on shutdown.
> 
> I believe the difference is caused by this bug, present in v208 but fixed in
> v214:
> 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=749268
> 
> In v208, the failure and timeout happen at shutdown (or when the admin stops
> the service explicitly). In v214, the failure and timeout happen immediately
> when the "nobody" session finishes, and thus happens completely in
> background. The service still goes into failure state, and I suppose that
> can have subtle advert effects; it definitely looks unclean.
> 
>> That said, I guess we should fix the code to fall back to something safe
>> like / if the CHDIR does not succeed resp. the directory does not exist.
> 
> I am not entirely sure this would be a good thing: having a nonexistent home
> directory is made for preventing this kind of thing to happen.
> 
> In this particular case, I find it rather strange to try to invoke /bin/kill
> instead of killing directly. I did not manage to find where it came from by
> reading the code.


Since this looks like a clear upstream bug, could you please file it
upstream and report back with the bug number.

Thanks,
Michael


[1] https://bugs.freedesktop.org/enter_bug.cgi?product=systemd


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