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Re: (ITS#8660) slapd segmentation faults (relay backend and rwm overlay)
- To: openldap-its@OpenLDAP.org
- Subject: Re: (ITS#8660) slapd segmentation faults (relay backend and rwm overlay)
- From: firstname.lastname@example.org
- Date: Wed, 24 May 2017 13:49:00 +0000
- Auto-submitted: auto-generated (OpenLDAP-ITS)
Howard Chu wrote:
> email@example.com wrote:
>> Full_Name: Vlado Nespor
>> Version: 2.4.44
>> OS: Red Hat el7
>> URL: ftp://ftp.openldap.org/incoming/
>> Submission from: (NULL) (2001:67c:10ec:32d0::222)
>> We have experienced random slapd segmentation faults, when the relay
>> backend and rwm overlay were used in the configuration. After some
>> time I could reproduce the segmentation fault on a slow client and
>> with test queries, which were supposed to return a larger set of entries.
>> I could trace the problem to a wrong pointer in the slap_writewait_play
>> function in the openldap-2.4.44/servers/slapd/result.c file, and then
>> further to the openldap-2.4.44/servers/slapd/back-relay/op.c file. After
>> the addition of the sc_writewait pointer initialisation (see the patch
>> below), the test queries returned correct results and random slapd
>> segmentation faults disappeared.
> Thanks for the report, but this was already fixed in ITS#8218 released in
> 2.4.43. Sounds like Red Hat has botched their source code since the official
> fix has been out for nearly 2 years already.
Sorry, a typo on my part. It was ITS#8428.
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/