Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.
Bug 81438
| Summary: | nss_ldap segfaults on big groups | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Panu Matilainen <pmatilai> |
| Component: | nss_ldap | Assignee: | Nalin Dahyabhai <nalin> |
| Status: | CLOSED NEXTRELEASE | QA Contact: | Jay Turner <jturner> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 9 | CC: | nicku, srevivo |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2003-07-31 14:40:42 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 79579, 100644 | ||
Forgot to mention: this is using RFC2307bis schema. If compiled without support for that nss_ldap doesn't crash but then it doesn't provide much info either :) This might very well be fixed in nss_ldap-203: http://bugzilla.padl.com/show_bug.cgi?id=121 Unfortunately I'm not able to actually test it currently as someone has pulled the plug on the LDAP-server :( Confirmed now: after updating the current rawhide nss_ldap package to 203 it no long segfaults. Severn has nss_ldap-207 and as mentioned earlier this was fixed in 203 already - closing... |
From Bugzilla Helper: User-Agent: Mozilla/5.0 Galeon/1.2.7 (X11; Linux i686; U;) Gecko/20021216 Description of problem: nss_ldap segfaults in presence of big(gish) groups on the ldap server. I'm not sure what's the actual breakup point is, but for nss_ldap-198 and 202 its 100% reproducible here with a group of 4793 users. Older versions (tested on RH7.2) segfault much earlier, for nss_ldap-189-4 the breakup point seems to be 10 users in a group. I can "fix" it (tested on nss_ldap 198) by causing a memory leak by commenting out "ldap_value_free (vals);" on line 158 of ldap-grp.c, after doing that I can no more make it crash. Also it doesn't appear to be a null pointer since changing it to if (vals != NULL) ldap_value_free (vals); doesn't help either. Oh and that doesn't help on nss_ldap-189.. Would be nice to have it fixed not just for the next release but for older versions too... Version-Release number of selected component (if applicable): 189, 198, 202 at least (haven't tried earlier versions) How reproducible: Always Steps to Reproduce: 1. create a group of at least (?) 4793 users on ldap server 2. configure client to fetch user information from ldap 3. run 'id username' Actual Results: [pmatilai@es-adsl-soho-30-186 pmatilai]$ id pmatilai Segmentation fault Expected Results: I should print out the list of groups.. Additional info: