Bug 880571

Summary:

SSSD crashes when c-ares returns success but an empty hostent during the DNS update

Product:

[Fedora] Fedora

Reporter:

Stef Walter <stefw>

Component:

sssd

Assignee:

Jakub Hrozek <jhrozek>

Status:

CLOSED CURRENTRELEASE

QA Contact:

Fedora Extras Quality Assurance <extras-qa>

Severity:

unspecified

Docs Contact:

Priority:

unspecified

Version:

CC:

jhrozek, sbose, sgallagh, ssorce

Target Milestone:

---

Target Release:

---

Hardware:

x86_64

OS:

Unspecified

Whiteboard:

abrt_hash:ee4b5d815892178d086dbb1fd181b47c8e5901ed

Fixed In Version:

Doc Type:

Bug Fix

Doc Text:

Story Points:

---

Clone Of:

Clones:

880967 (view as bug list)

Environment:

Last Closed:

2013-01-12 00:10:25 UTC

Type:

---

Regression:

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Mount Type:

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Documentation:

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CRM:

Verified Versions:

Category:

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oVirt Team:

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RHEL 7.3 requirements from Atomic Host:

Cloudforms Team:

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Target Upstream Version:

Embargoed:

Bug Depends On:

Bug Blocks:

880967

Attachments:

Description	Flags
File: var_log_messages	none
File: core_backtrace	none
File: environ	none
File: limits	none
File: backtrace	none
File: cgroup	none
File: smolt_data	none
File: executable	none
File: maps	none
File: dso_list	none
File: build_ids	none
File: proc_pid_status	none
File: open_fds	none

Description Stef Walter 2012-11-27 11:07:34 UTC

Version-Release number of selected component:
sssd-1.9.2-3.fc18

Additional info:
libreport version: 2.0.18
abrt_version:   2.0.18
backtrace_rating: 4
cmdline:        /usr/libexec/sssd/sssd_be --domain idm.lab.bos.redhat.com --debug-to-files
crash_function: ipa_dyndns_update_get_addrs_done
kernel:         3.6.6-3.fc18.x86_64

truncated backtrace:
:Thread no. 1 (10 frames)
: #0 ipa_dyndns_update_get_addrs_done at src/providers/ipa/ipa_dyndns.c:736
: #1 resolv_gethostbyname_done at src/resolv/async_resolv.c:1413
: #2 resolv_gethostbyname_dns_query_done at src/resolv/async_resolv.c:988
: #3 end_squery at ares_search.c:208
: #4 search_callback at ares_search.c:155
: #5 qcallback at ares_query.c:180
: #6 end_query at ares_process.c:1266
: #7 process_answer at ares_process.c:611
: #9 read_udp_packets at ares_process.c:497
: #10 processfds at ares_process.c:152

Comment 1 Stef Walter 2012-11-27 11:07:37 UTC

Created attachment 652596 [details]
File: var_log_messages

Comment 2 Stef Walter 2012-11-27 11:07:47 UTC

Created attachment 652597 [details]
File: core_backtrace

Comment 3 Stef Walter 2012-11-27 11:07:49 UTC

Created attachment 652598 [details]
File: environ

Comment 4 Stef Walter 2012-11-27 11:07:51 UTC

Created attachment 652599 [details]
File: limits

Comment 5 Stef Walter 2012-11-27 11:07:53 UTC

Created attachment 652600 [details]
File: backtrace

Comment 6 Stef Walter 2012-11-27 11:07:55 UTC

Created attachment 652601 [details]
File: cgroup

Comment 7 Stef Walter 2012-11-27 11:07:57 UTC

Created attachment 652602 [details]
File: smolt_data

Comment 8 Stef Walter 2012-11-27 11:07:59 UTC

Created attachment 652603 [details]
File: executable

Comment 9 Stef Walter 2012-11-27 11:08:03 UTC

Created attachment 652604 [details]
File: maps

Comment 10 Stef Walter 2012-11-27 11:08:05 UTC

Created attachment 652605 [details]
File: dso_list

Comment 11 Stef Walter 2012-11-27 11:08:07 UTC

Created attachment 652606 [details]
File: build_ids

Comment 12 Stef Walter 2012-11-27 11:08:09 UTC

Created attachment 652607 [details]
File: proc_pid_status

Comment 13 Stef Walter 2012-11-27 11:08:15 UTC

Created attachment 652608 [details]
File: open_fds

Comment 14 Jakub Hrozek 2012-11-28 09:53:06 UTC

There are two bugs, really. One is that c-ares returns success and empty address list and the other is that the SSSD does not handle that situation well. Stephen patched the empty list check in the SSSD and I'll clone this bugzilla to c-ares, too. We should investigate how could c-ares return an empty list.

Stef, was that problem reproducable in your environment or just a one-time fluke?

Comment 15 Jakub Hrozek 2012-11-28 14:29:57 UTC

Upstream ticket:
https://fedorahosted.org/sssd/ticket/1675

Comment 16 Fedora Update System 2012-12-06 19:32:50 UTC

sssd-1.9.3-1.fc18 has been submitted as an update for Fedora 18.
https://admin.fedoraproject.org/updates/sssd-1.9.3-1.fc18

Comment 17 Fedora Update System 2012-12-07 20:46:15 UTC

Package sssd-1.9.3-1.fc18:
* should fix your issue,
* was pushed to the Fedora 18 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing sssd-1.9.3-1.fc18'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2012-19960/sssd-1.9.3-1.fc18
then log in and leave karma (feedback).

Comment 18 Fedora Update System 2013-01-12 00:10:29 UTC

sssd-1.9.3-1.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.