Red Hat Bugzilla – Full Text Bug Listing
|Summary:||[abrt] krb5-workstation-1.8.2-10.fc14: strcmp: Process /usr/bin/klist was killed by signal 11 (SIGSEGV)|
|Product:||[Fedora] Fedora||Reporter:||Sheldon Hearn <sheldonh>|
|Component:||krb5||Assignee:||Nalin Dahyabhai <nalin>|
|Status:||CLOSED ERRATA||QA Contact:||Fedora Extras Quality Assurance <extras-qa>|
|Fixed In Version:||krb5-1.8.4-2.fc14||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2011-07-06 17:34:31 EDT||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
Description Sheldon Hearn 2011-05-24 04:20:36 EDT
abrt version: 1.1.18 architecture: x86_64 Attached file: backtrace, 59856 bytes cmdline: klist -s component: krb5 Attached file: coredump, 548864 bytes crash_function: strcmp executable: /usr/bin/klist kernel: 126.96.36.199-91.fc14.x86_64 package: krb5-workstation-1.8.2-10.fc14 rating: 4 reason: Process /usr/bin/klist was killed by signal 11 (SIGSEGV) release: Fedora release 14 (Laughlin) time: 1306223272 uid: 500 comment ----- Note that klist without arguments works as expected: $ klist Ticket cache: FILE:/tmp/krb5cc_500 Default principal: sheldonh/root@HOST-H.NET Valid starting Expires Service principal 05/23/11 09:35:37 05/24/11 09:35:32 krbtgt/HOST-H.NET@HOST-H.NET ... It's only klist -s that crashes. How to reproduce ----- 1. kinit sheldonh/root 2. Wait for ticket to expire 3. klist -s
Comment 2 Nalin Dahyabhai 2011-05-24 11:45:10 EDT
Do you have the core dump from this crash? When I get a TGT for nalin/admin here, and wait for it to expire, I don't see a crash. Based on the partial klist output you gave above, the strcmp() call should be comparing two non-empty, correctly terminated strings, so it really shouldn't be triggering a segfault there. Additionally, just to rule out any variation, are you also using glibc-2.13-1.x86_64?
Comment 3 Sheldon Hearn 2011-05-25 03:47:21 EDT
Thanks for your interest in this issue. I installed some more debuginfo files, obtained a core file, and traced it. I'll attach the compressed core file and the trace. I've also confirmed that I'm using glibc-devel-2.13-1.x86_64.
Comment 4 Sheldon Hearn 2011-05-25 03:50:42 EDT
Created attachment 500751 [details] core dump of segfaulting klist -s
Comment 6 Nalin Dahyabhai 2011-05-25 16:54:56 EDT
Ah, I see what's going on now. The klist output was truncated at the interesting part: the crash is happening while examining credentials for "host/vcs.hetzner.co.za" with no realm name, which suggests that referrals were involved in getting the ticket for that server, and that's something that the KDC I usually use doesn't support yet. With a one-off test KDC, it was pretty easy to reproduce.
Comment 7 Fedora Update System 2011-06-24 15:29:44 EDT
krb5-1.8.4-2.fc14 has been submitted as an update for Fedora 14. https://admin.fedoraproject.org/updates/krb5-1.8.4-2.fc14
Comment 8 Fedora Update System 2011-06-25 16:00:55 EDT
Package krb5-1.8.4-2.fc14: * should fix your issue, * was pushed to the Fedora 14 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing krb5-1.8.4-2.fc14' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/krb5-1.8.4-2.fc14 then log in and leave karma (feedback).
Comment 9 Fedora Update System 2011-07-06 17:34:20 EDT
krb5-1.8.4-2.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report.