ehlo,
As I already mention in [1] the ticket #2743 should be also fixed in
stable branches as well. It migh cause serious performance regression.
It depends on allocator.
BTW another solution is to remove integrity check because bug with corrupted
cache is alredy fixed in sssd-1.12
LS
[1]
https://lists.fedorahosted.org/pipermail/sssd-devel/2015-August/024295.html