[Pkg-samba-maint] Bug#827141: winbind: regression in 4.2.10: extremely slow user/group name lookup

[HW42]

Package: winbind
Version: 2:4.2.10+dfsg-0+deb8u3
Severity: important
Tags: patch

Hi,

with the update to the 4.2.10 based samba a regression has been
introduced. Resolving of user/group names is extremely slow. An 'ls -l'
which normally takes significantly less than a second now takes a minute
or more. Filling as 'important' since this degenerates the usability
considerably.

I could identify the problem with a git-bisect. It's upstream bug
#11852 [0]. And has been fixed with commit aec25b0 [1].

The upstream patch applies cleanly on top of 2:4.2.10+dfsg-0+deb8u3 (see
attached patch). I have tested it and it resolves the problem in my use
case.

Thanks.

[0]: https://bugzilla.samba.org/show_bug.cgi?id=11852
[1]: https://git.samba.org/?p=samba.git;a=commitdiff;h=aec25b0cc232286c3e4d85de7f00483c09f7c66e
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