On Sun, Dec 12, 2021 at 08:36:01PM -0800, Bryce Harrington wrote:
> On Mon, Dec 13, 2021 at 03:50:10PM +1300, Robert Ancell wrote:
> > Hi all,
> >
> > I have a software-properties SRU [1] in bionic that has phasing stopped due
> > to an error [2].
> >
> > The stack trace is showing the following (new) code is failing:
> >
> > di = distro_info.UbuntuDistroInfo()
> > releases = di.get_all(result="object")
> >
> > with the error:
> >
> > AttributeError: 'UbuntuDistroInfo' object has no attribute 'get_all'
> >
> > This is very confusing, since the code from this (from the distro-info
> > library) is essentially:
> >
> > class DistroInfo:
> > def get_all(self, result="codename"):
> > ...
> >
> > class UbuntuDistroInfo(DistroInfo):
> > def __init__(self):
> > super().__init__("Ubuntu")
> >
> > i.e. I can't see any reason why the `di` object would not have a get_all()
> > method. Running software-properties and various test scripts on a bionic VM
> > I haven't been able to reproduce any such issues.
> >
> > Theories that have been proposed:
> > - The user is actually running an older version of disto-info that was from
> > before this method was added (in distro-info 0.15).
> > - Seems unlikely since there are error cases in which the install was
> > done with a bionic image.
> > - The user has a locally installed version of distro-info.
> > - Stacktraces shows the system installed version, the appropriate version
> > of the binary installed, no PYTHONPATH set.
> > - A .pyc is being used that doesn't match the source.
> > - Since installs have been from bionic media, it seems impossible that an
> > older .pyc could be created.
> > - Other code has removed this method.
> > - Method is being accessed immediately, no other code seen in source that
> > could do this.
> > - Memory corruption.
> > - Too many cases for error to be random, not seeing other similar issues.
> >
> > Does anyone have any ideas about what might be going on?
>
> Could it be an old pip-installed version of distro-info?
> (C.f. LP: #1848829, #1874250)
This type of crash has come up before and it was always my thought that
it was an older pip-installed version of distro-info. For quite some
time the pypi version of distro-info was out of date and missing this
option.
--
Brian Murray
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