Bug 856631
| Summary: | segfault in IA__g_type_check_instance_is_a when dealing with expired tickets | ||||||
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| Product: | Red Hat Enterprise Linux 6 | Reporter: | David Jaša <djasa> | ||||
| Component: | krb5-auth-dialog | Assignee: | Alexander Larsson <alexl> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | BaseOS QE Security Team <qe-baseos-security> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 6.3 | CC: | dpal, jplans, pkis | ||||
| Target Milestone: | beta | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2017-12-06 12:16:36 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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assinging to the right component. This request was evaluated by Red Hat Product Management for inclusion in the current release of Red Hat Enterprise Linux. Because the affected component is not scheduled to be updated in the current release, Red Hat is unable to address this request at this time. Red Hat invites you to ask your support representative to propose this request, if appropriate, in the next release of Red Hat Enterprise Linux. (In reply to comment #0) ... > krb5-auth-dialog started to throw some error when I click its icon after the > credentials expired (not reported yet). The error in question says "Couldn't acquire kerberos ticket: 'Illegal argument'" and the whole bug somehow related with connection changes and/or suspend, when the credentials expired on the same network, the error didn't occur. One more observation: when the error is popped-up, no traffic is on kerberos ports. I finally found when this occurs: when the DNS return NXDOMAIN or non-A/non-AAAA records for kerberos servers. krb5-auth-dialog then pops up error window with "Invalid argument" message, or it crashes right away with backtrace above. Red Hat Enterprise Linux 6 is in the Production 3 Phase. During the Production 3 Phase, Critical impact Security Advisories (RHSAs) and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available. The official life cycle policy can be reviewed here: http://redhat.com/rhel/lifecycle This issue does not meet the inclusion criteria for the Production 3 Phase and will be marked as CLOSED/WONTFIX. If this remains a critical requirement, please contact Red Hat Customer Support to request a re-evaluation of the issue, citing a clear business justification. Note that a strong business justification will be required for re-evaluation. Red Hat Customer Support can be contacted via the Red Hat Customer Portal at the following URL: https://access.redhat.com/ |
Created attachment 612105 [details] backtrace by abrt Description of problem: krb5-auth-dialog started to throw some error when I click its icon after the credentials expired (not reported yet). When I try to "Remove credentials cache", the dialog segfaults. I use these debugging variables on my system: export MALLOC_CHECK_=1 export MALLOC_PERTURB_=$(($RANDOM % 255 + 1)) export G_SLICE=always-malloc,debug-blocks Version-Release number of selected component (if applicable): # rpm -qa '*krb5*' krb5-devel-1.9-33.el6_3.2.x86_64 krb5-auth-dialog-0.13-3.el6.x86_64 krb5-libs-1.9-33.el6_3.2.x86_64 krb5-auth-dialog-debuginfo-0.13-3.el6.x86_64 krb5-debuginfo-1.9-33.el6_3.2.x86_64 krb5-workstation-1.9-33.el6_3.2.x86_64 pam_krb5-2.3.11-9.el6.x86_64 How reproducible: often (didn't have enough attempts to say "always") Steps to Reproduce: 1. wait for tickets expiry 2. try to remove them by right-click -> remove credentials cache 3. Actual results: segfault Expected results: krb5-auth-dialog removes tickets successfully Additional info: /var/log/messages: Sep 11 10:05:17 dhcp-29-7 kernel: krb5-auth-dialo[25600] general protection ip:3ee8c26170 sp:7fff0ed82c90 error:0 in libgobject-2.0.so.0.2200.5[3ee8c00000+43000] ... Sep 12 10:40:46 dhcp-29-7 kernel: krb5-auth-dialo[17412]: segfault at 80101046c ip 0000003fd00824f6 sp 00007fff23320220 error 4 in libgtk-x11-2.0.so.0.1800.9[3fcfe00000+459000] Top of the backtrace: Program terminated with signal 11, Segmentation fault. #0 IA__g_type_check_instance_is_a (type_instance=0x1b49930, iface_type=<value optimized out>) at gtype.c:3697 3697 check = node && node->is_instantiatable && iface && type_node_conforms_to_U (node, iface, TRUE, FALSE); Thread 1 (Thread 0x7f2bde58f940 (LWP 25600)): #0 IA__g_type_check_instance_is_a (type_instance=0x1b49930, iface_type=<value optimized out>) at gtype.c:3697 node = 0x700000000000090 iface = 0x1a174d0 check = 28507808 #1 0x0000003eef682506 in IA__gtk_widget_destroy (widget=0x1b49930) at gtkwidget.c:2964 __inst = 0x1b49930 __t = <value optimized out> __r = <value optimized out> _g_boolean_var_ = <value optimized out> __PRETTY_FUNCTION__ = "IA__gtk_widget_destroy" #2 0x00000000004085ec in ka_grab_credentials (applet=0x1a5ddb0) at krb5-auth-dialog.c:1007 errmsg = 0x1be78e0 "Nep\305\231\303\255pustn\303\275 argument" retval = <value optimized out> success = 0 pwdialog = 0x1a92f00 #3 0x0000000000409c0c in ka_tray_icon_on_click (status_icon=<value optimized out>, data=0x1a5ddb0) at krb5-auth-applet.c:759 applet = <value optimized out>