Bug#699205: [3.7.1->3.7.3 regression] ps, pgrep and pkill segfault

[Jonathan Nieder <jrnieder@gmail.com>]

Sascha Silbe wrote:
> Jonathan Nieder <jrnieder@gmail.com> writes:

>>> after updating the linux-image-3.7-trunk-amd64 from
>>> 3.7.1-1~experimental.2 to 3.7.3-1~experimental.1 today and rebooting,
>>> the tools ps, pgrep and pkill (package procps) are always segfaulting:
>>
>> Just to check: if you downgrade to 3.7.1 again, do the segfaults go
>> away?  (Historical versions of Debian packages are available from
>> http://snapshot.debian.org)
>
> Confirmed.

Thanks.  Presumably this is triggered by

  3f0f3b1f1d41 proc: pid/status: show all supplementary groups
               (2012-12-17)

What exact 'ps' command triggers this?  Can you reproduce it with
'ps $$'?  What does 'cat /proc/$$/status' say?

Hope that helps,
Jonathan