[Pkg-samba-maint] Bug#820965: [regression]: net usersidlist: Could not malloc sid array Could not get the user/sid list

[Andrew Bartlett]

On Thu, 14 Apr 2016 14:06:00 +0800 Paul Wise <pabs at debian.org> wrote:
> On Thu, 14 Apr 2016 13:52:10 +0800 Paul Wise wrote:
> 
> > The upgrade of samba in the Debian security archive has caused an
error
> > with net usersidlist, it is now unable to retrieve the user SID
list:
> 
> Somehow I was able to make the error go away by downgrading the samba
> packages to 2:4.1.17+dfsg-2+deb8u2 and running `net usersidlist`
again
> and then upgrading back to 2:4.2.10+dfsg-0+deb8u1 again.

My best guess is that winbindd wasn't in a happy state after the
upgrade.  'net cache flush' or similar may have helped.

That is, I think wbcListUsers() returned 0 entries, which causes other
code to think a realloc of length 0 'failed'. 

wbinfo -u would probably have failed in a similar way, but with a more
useful error message.

Andrew Bartlett
-- 
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba