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Bug 1464205

Summary: NULL LDAP context in call to ldap_search_ext_s during search in cn=ad,cn=trusts,dc=example,dc=com
Product: Red Hat Enterprise Linux 7 Reporter: Petr Vobornik <pvoborni>
Component: ipaAssignee: IPA Maintainers <ipa-maint>
Status: CLOSED ERRATA QA Contact: ipa-qe <ipa-qe>
Severity: high Docs Contact:
Priority: high    
Version: 7.4CC: enewland, ksiddiqu, pasik, pvoborni, rcritten, sumenon, tscherf
Target Milestone: rcKeywords: ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: ipa-4.5.0-21.el7.1 Doc Type: If docs needed, set a value
Doc Text:
Prior to this update, the ipadb plug-in sometimes handled LDAP connections incorrectly. As a consequence, the krb5kdc tool terminated unexpectedly at random times. With this update, the ipadb plug-in has been fixed, and the described problem no longer occurs.
 Story Points: ---
Clone Of:
: 1475664 (view as bug list) Environment:
Last Closed: 2018-04-10 16:42:04 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: 1475664    

Description Petr Vobornik 2017-06-22 16:12:42 UTC 
Cloned from upstream: https://pagure.io/freeipa/issue/7017

...which causes krb5kdc to crash as it hits an assert.

```
#0  0x00007f38f96611d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007f38f96628c8 in __GI_abort () at abort.c:90
#2  0x00007f38f965a146 in __assert_fail_base (fmt=0x7f38f97ab3a8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n",
    assertion=assertion@entry=0x7f38f26506d3 "ld != ((void *)0)", file=file@entry=0x7f38f264acb6 "search.c", line=line@entry=95,
    function=function@entry=0x7f38f264ad90 <__PRETTY_FUNCTION__.8931> "ldap_pvt_search") at assert.c:92
#3  0x00007f38f965a1f2 in __GI___assert_fail (assertion=assertion@entry=0x7f38f26506d3 "ld != ((void *)0)",
    file=file@entry=0x7f38f264acb6 "search.c", line=line@entry=95,
    function=function@entry=0x7f38f264ad90 <__PRETTY_FUNCTION__.8931> "ldap_pvt_search") at assert.c:101
#4  0x00007f38f261d29c in ldap_pvt_search (ld=ld@entry=0x0, base=base@entry=0x7f38fc6ea1e0 "cn=ad,cn=trusts,dc=example,dc=com",
    scope=scope@entry=2, filter=filter@entry=0x7f38f2a819f0 "(objectclass=ipaNTTrustedDomain)", attrs=attrs@entry=0x7ffd28f71110,
    attrsonly=attrsonly@entry=0, sctrls=sctrls@entry=0x0, cctrls=cctrls@entry=0x0, timeout=timeout@entry=0x7f38f2c855d0 <std_timeout>,
    sizelimit=sizelimit@entry=0, deref=deref@entry=-1, msgidp=msgidp@entry=0x7ffd28f71034) at search.c:95
#5  0x00007f38f261d35a in ldap_pvt_search_s (ld=0x0, base=base@entry=0x7f38fc6ea1e0 "cn=ad,cn=trusts,dc=example,dc=com",
    scope=scope@entry=2, filter=filter@entry=0x7f38f2a819f0 "(objectclass=ipaNTTrustedDomain)", attrs=attrs@entry=0x7ffd28f71110,
    attrsonly=attrsonly@entry=0, sctrls=sctrls@entry=0x0, cctrls=cctrls@entry=0x0, timeout=timeout@entry=0x7f38f2c855d0 <std_timeout>,
    sizelimit=sizelimit@entry=0, deref=deref@entry=-1, res=res@entry=0x7ffd28f71120) at search.c:174
#6  0x00007f38f261d430 in ldap_search_ext_s (ld=<optimized out>, base=base@entry=0x7f38fc6ea1e0 "cn=ad,cn=trusts,dc=example,dc=com",
    scope=scope@entry=2, filter=filter@entry=0x7f38f2a819f0 "(objectclass=ipaNTTrustedDomain)", attrs=attrs@entry=0x7ffd28f71110,
    attrsonly=attrsonly@entry=0, sctrls=sctrls@entry=0x0, cctrls=cctrls@entry=0x0, timeout=timeout@entry=0x7f38f2c855d0 <std_timeout>,
    sizelimit=sizelimit@entry=0, res=res@entry=0x7ffd28f71120) at search.c:150
#7  0x00007f38f2a745d3 in ipadb_simple_search (ipactx=ipactx@entry=0x7f38fc7021b0,
    basedn=0x7f38fc6ea1e0 "cn=ad,cn=trusts,dc=example,dc=com", scope=scope@entry=2,
    filter=filter@entry=0x7f38f2a819f0 "(objectclass=ipaNTTrustedDomain)", attrs=attrs@entry=0x7ffd28f71110,
    res=res@entry=0x7ffd28f71120) at ipa_kdb_common.c:189
#8  0x00007f38f2a7b128 in ipadb_mspac_check_trusted_domains (ipactx=ipactx@entry=0x7f38fc7021b0) at ipa_kdb_mspac.c:2378
#9  0x00007f38f2a7b7a8 in ipadb_reinit_mspac (ipactx=ipactx@entry=0x7f38fc7021b0, force_reinit=force_reinit@entry=false)
    at ipa_kdb_mspac.c:2631
#10 0x00007f38f2a73e61 in ipadb_get_connection (ipactx=0x7f38fc7021b0) at ipa_kdb.c:460
#11 0x00007f38f2a74361 in ipadb_need_retry (ipactx=<optimized out>, error=<optimized out>) at ipa_kdb_common.c:149
#12 0x00007f38f2a7452e in ipadb_simple_search (ipactx=ipactx@entry=0x7f38fc7021b0,
    basedn=0x7f38fc704c00 "cn=ad,cn=trusts,dc=example,dc=com", scope=scope@entry=2,
    filter=filter@entry=0x7f38f2a819f0 "(objectclass=ipaNTTrustedDomain)", attrs=attrs@entry=0x7ffd28f71360,
    res=res@entry=0x7ffd28f71370) at ipa_kdb_common.c:187
#13 0x00007f38f2a7b128 in ipadb_mspac_check_trusted_domains (ipactx=ipactx@entry=0x7f38fc7021b0) at ipa_kdb_mspac.c:2378
#14 0x00007f38f2a7b7a8 in ipadb_reinit_mspac (ipactx=ipactx@entry=0x7f38fc7021b0, force_reinit=force_reinit@entry=false)
    at ipa_kdb_mspac.c:2631
#15 0x00007f38f2a73e61 in ipadb_get_connection (ipactx=0x7f38fc7021b0) at ipa_kdb.c:460
#16 0x00007f38f2a74361 in ipadb_need_retry (ipactx=<optimized out>, error=<optimized out>) at ipa_kdb_common.c:149
#17 0x00007f38f2a7452e in ipadb_simple_search (ipactx=ipactx@entry=0x7f38fc7021b0,
    basedn=0x7f38fc6e9fb0 "cn=ad,cn=trusts,dc=example,dc=com", scope=scope@entry=2,
    filter=filter@entry=0x7f38f2a819f0 "(objectclass=ipaNTTrustedDomain)", attrs=attrs@entry=0x7ffd28f715b0,
    res=res@entry=0x7ffd28f715c0) at ipa_kdb_common.c:187
#18 0x00007f38f2a7b128 in ipadb_mspac_check_trusted_domains (ipactx=ipactx@entry=0x7f38fc7021b0) at ipa_kdb_mspac.c:2378
#19 0x00007f38f2a7b7a8 in ipadb_reinit_mspac (ipactx=ipactx@entry=0x7f38fc7021b0, force_reinit=force_reinit@entry=false)
    at ipa_kdb_mspac.c:2631
#20 0x00007f38f2a73e61 in ipadb_get_connection (ipactx=0x7f38fc7021b0) at ipa_kdb.c:460
#21 0x00007f38f2a74361 in ipadb_need_retry (ipactx=<optimized out>, error=<optimized out>) at ipa_kdb_common.c:149
#22 0x00007f38f2a747db in ipadb_simple_modify (ipactx=ipactx@entry=0x7f38fc7021b0,
    dn=0x7f38fc6e8e60 "fqdn=ccs-10-22-1-26.hosts.example.com,cn=computers,cn=accounts,dc=example,dc=com", mods=0x7f38fc6ea4b0)
    at ipa_kdb_common.c:252
#23 0x00007f38f2a78a1d in ipadb_modify_principal (entry=0x7f38fc7044b0, kcontext=0x7f38fc701c70) at ipa_kdb_principals.c:2349
#24 ipadb_put_principal (kcontext=kcontext@entry=0x7f38fc701c70, entry=entry@entry=0x7f38fc7044b0, db_args=db_args@entry=0x0)
    at ipa_kdb_principals.c:2367
#25 0x00007f38f2a7e211 in ipadb_audit_as_req (kcontext=0x7f38fc701c70, request=<optimized out>, client=0x7f38fc7044b0,
    server=<optimized out>, authtime=1491042316, error_code=0) at ipa_kdb_audit_as.c:132
#26 0x00007f38fb1dd8d0 in krb5_db_audit_as_req (kcontext=kcontext@entry=0x7f38fc701c70, request=request@entry=0x7f38fc703700,
    client=client@entry=0x7f38fc7044b0, server=server@entry=0x7f38fc704680, authtime=authtime@entry=1491042316,
    error_code=error_code@entry=0) at kdb5.c:2536
#27 0x00007f38fb84a356 in log_as_req (context=0x7f38fc701c70, from=<optimized out>, request=0x7f38fc703700,
    reply=reply@entry=0x7f38fc702ae8, client=0x7f38fc7044b0, cname=<optimized out>, server=0x7f38fc704680,
    sname=0x7f38fc703860 "krbtgt/example.COM", authtime=1491042316, status=status@entry=0x0, errcode=errcode@entry=0,
    emsg=emsg@entry=0x0) at kdc_log.c:92
#28 0x00007f38fb839c27 in finish_process_as_req (state=0x7f38fc702920, errcode=<optimized out>) at do_as_req.c:362
#29 0x00007f38fb844aa5 in enc_ts_verify (context=0x7f38fc701c70, req_pkt=<optimized out>, request=<optimized out>,
    enc_tkt_reply=0x7f38fc702958, pa=<optimized out>, cb=<optimized out>, rock=0x7f38fc702a90, moddata=0x0,
    respond=0x7f38fb842ef0 <finish_verify_padata>, arg=0x7f38fc6e9fb0) at kdc_preauth_encts.c:131
#30 0x00007f38fb842e73 in next_padata (state=<optimized out>) at kdc_preauth.c:1178
#31 0x00007f38fb83a7b5 in process_as_req (request=<optimized out>, req_pkt=req_pkt@entry=0x7f38fc703c68,
    from=from@entry=0x7f38fc702808, kdc_active_realm=0x7f38fc6e9e90, vctx=vctx@entry=0x7f38fc6e9b30,
    respond=respond@entry=0x7f38fb8389e0 <finish_dispatch_cache>, arg=arg@entry=0x7f38fc6ff360) at do_as_req.c:819
#32 0x00007f38fb838d02 in dispatch (cb=0x7f38fba552c0 <shandle>, local_saddr=<optimized out>, from=0x7f38fc702808,
    pkt=pkt@entry=0x7f38fc703c68, is_tcp=is_tcp@entry=1, vctx=vctx@entry=0x7f38fc6e9b30,
    respond=respond@entry=0x7f38fb84bf60 <process_tcp_response>, arg=arg@entry=0x7f38fc703be0) at dispatch.c:190
#33 0x00007f38fb84c240 in process_tcp_connection_read (ctx=0x7f38fc6e9b30, ev=0x7f38fc6e8f10) at net-server.c:1739
#34 0x00007f38f99efcd8 in verto_fire (ev=0x7f38fc6e8f10) at verto.c:947
#35 0x00007f38f1d68d8b in epoll_event_loop (tvalp=0x7ffd28f72050, epoll_ev=0x7f38fc709620) at ../tevent_epoll.c:728
#36 epoll_event_loop_once (ev=<optimized out>, location=<optimized out>) at ../tevent_epoll.c:926
#37 0x00007f38f1d67257 in std_event_loop_once (ev=0x7f38fc709a90, location=0x7f38ec6c7132 "verto-tevent.c:55")
    at ../tevent_standard.c:114
#38 0x00007f38f1d6340d in _tevent_loop_once (ev=0x7f38fc709a90, location=0x7f38ec6c7132 "verto-tevent.c:55") at ../tevent.c:533
#39 0x00007f38f99ef4af in verto_run (ctx=ctx@entry=0x7f38fc6e9b30) at verto.c:578
#40 0x00007f38fb837997 in main (argc=5, argv=0x7ffd28f722c8) at main.c:1064
```

This happens at random intervals, as far as I can tell. Also, I think it might be related to the fact that I turned on ipaNTHash generation on IPA user principals, as I don't otherwise have AD set up. Also, since I was asked about it on IRC: I have run ipa-adtrust-install
Comment 2 Petr Vobornik 2017-06-22 16:12:55 UTC 
Upstream ticket:
https://pagure.io/freeipa/issue/7017
Comment 3 Pavel Vomacka 2017-07-24 11:35:21 UTC 
Fixed upstream
master:
https://pagure.io/freeipa/c/0f0423cf531d5fab73516323750af6b5106ba070
ipa-4-5:
https://pagure.io/freeipa/c/1cb93edd5bbfbca51362ca8dd3bf7c40d2020218
Comment 9 Sudhir Menon 2017-12-20 08:41:12 UTC 
Verified the bug using ipa-server.x86_64 0:4.5.4-6.el7 and running ipa-adtrust sanity run.
Comment 13 errata-xmlrpc 2018-04-10 16:42:04 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:0918