Red Hat Bugzilla – Bug 880571
SSSD crashes when c-ares returns success but an empty hostent during the DNS update
Last modified: 2013-01-11 19:10:29 EST
Version-Release number of selected component:
libreport version: 2.0.18
cmdline: /usr/libexec/sssd/sssd_be --domain idm.lab.bos.redhat.com --debug-to-files
: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
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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?
sssd-1.9.3-1.fc18 has been submitted as an update for Fedora 18.
* 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:
then log in and leave karma (feedback).
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.