On Thu, Jun 27, 2019 at 10:34:19PM -0700, Quanah Gibson-Mount wrote:

--On Sunday, April 07, 2019 10:15 AM +0000 henrik.bohnenkamp@ionos.com wrote:

...

On Thu, Apr 04, 2019 at 05:32:16PM +0100, Howard Chu wrote:

Had a customer who was hitting this issue try out these patches -- It greatly decreases the search time (from unknown/infinite to 1 minute). Unfortunately slapd then segv's. Working on getting a test database to reproduce the issue with for a good backtrace.

oh, that's too bad. I'd be happy to participate in the bug hunt. May I ask: which version did your customer use? I have modified the patch to work with the recent changes on master, but I did not dig in very deep to understand these changes. So I must admit that these modifications to the patch are completely untested (except the tests in the tests subdir).

Things might work better with the 2.4.46/47 patch, if that is an option for your customer.

Wrt getting a test-tree, maybe the python script I have in the github repo for the patch can provide one. (https://github.com/hbo/openldap-mdb-deref-problem/blob/master/scripts/write_...)

I'm of course very interested to keep this patch alive, so if you have details on the segv, please let me know.

Henrik

--Quanah

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Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: http://www.symas.com