Bug 1734248

Summary: [abrt] [faf] sssd: _dbus_list_unlink(): /usr/libexec/sssd/proxy_child killed by 11
Product: Red Hat Enterprise Linux 8 Reporter: Steeve Goveas <sgoveas>
Component: sssdAssignee: Pavel Březina <pbrezina>
Status: CLOSED DUPLICATE QA Contact: sssd-qe <sssd-qe>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 8.1CC: apeetham, atikhono, grajaiya, jhrozek, lslebodn, mzidek, pbrezina, tscherf
Target Milestone: rc   
Target Release: 8.0   
Hardware: Unspecified   
OS: Unspecified   
URL: http://faf.lab.eng.brq.redhat.com/faf/reports/bthash/8b44e4b9c0da7715d2198e37adfe691e76a468d3/
Whiteboard: sync-to-jira
Fixed In Version: Doc Type: If docs needed, set a value
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Story Points: ---
Clone Of: Environment:
Last Closed: 2019-11-05 10:36:37 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:

Description Steeve Goveas 2019-07-30 04:54:27 UTC
This bug has been created based on an anonymous crash report requested by the package maintainer.

Report URL: http://faf.lab.eng.brq.redhat.com/faf/reports/bthash/8b44e4b9c0da7715d2198e37adfe691e76a468d3/


Crash report email was sent from case_sensitive test suite

time:           Mon 29 Jul 2019 11:27:43 AM EDT
package:        sssd-proxy-2.2.0-1.el8
reason:         proxy_child killed by SIGSEGV
crash_function: _dbus_list_unlink
cmdline:        /usr/libexec/sssd/proxy_child -d 0xf7f0 --debug-timestamps=1 --debug-microseconds=0 --logger=files --domain PROXY --id 1
executable:     /usr/libexec/sssd/proxy_child
component:      sssd
uid:            0
username:       root
hostname:       ci-vm-10-0-155-17.hosted.upshift.rdu2.redhat.com
os_release:     Red Hat Enterprise Linux release 8.1 Beta (Ootpa)
architecture:   x86_64
pwd:            /
kernel:         4.18.0-107.el8.x86_64
abrt_version:   2.10.9
exploitable:
:Likely crash reason: Jump to an invalid address
:Exploitable rating (0-9 scale): 6

Reports:
uReport: BTHASH=8b44e4b9c0da7715d2198e37adfe691e76a468d3
ABRT Server: URL=http://faf.lab.eng.brq.redhat.com/faf/reports/bthash/8b44e4b9c0da7715d2198e37adfe691e76a468d3
ABRT Server: URL=http://faf.lab.eng.brq.redhat.com/faf/reports/12208/
CI Job: https://idm-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/job/sssd-rhel-prod-tier2/job/master/8/

Full Backtrace:
could not find '.gnu_debugaltlink' file for /var/cache/abrt-di/usr/lib/debug/usr/libexec/sssd/proxy_child-2.2.0-1.el8.x86_64.debug
[New LWP 4770]
Error while reading shared library symbols for /usr/lib64/sssd/libsss_util.so:
could not find '.gnu_debugaltlink' file for /var/cache/abrt-di/usr/lib/debug/usr/lib64/sssd/libsss_util.so-2.2.0-1.el8.x86_64.debug
Error while reading shared library symbols for /lib64/libbasicobjects.so.0:
could not find '.gnu_debugaltlink' file for /var/cache/abrt-di/usr/lib/debug/usr/lib64/libbasicobjects.so.0.1.0-0.6.1-39.el8.x86_64.debug
Error while reading shared library symbols for /lib64/libref_array.so.1:

Comment 1 Alexey Tikhonov 2019-07-30 19:27:34 UTC
Hi Steeve,

Do you know reliable way to reproduce an issue?

Comment 3 Steeve Goveas 2019-08-22 11:45:25 UTC
No crashes noticed with the latest build sssd-proxy-2.2.0-11.el8

Comment 4 Steeve Goveas 2019-08-26 07:19:24 UTC
I see this crash again with the latest build

time:           Fri 23 Aug 2019 04:44:12 AM EDT
package:        sssd-proxy-2.2.0-16.el8
reason:         proxy_child killed by SIGSEGV
crash_function: _dbus_list_unlink
cmdline:        /usr/libexec/sssd/proxy_child -d 0xf7f0 --debug-timestamps=1 --debug-microseconds=0 --logger=files --domain PROXY --id 1
executable:     /usr/libexec/sssd/proxy_child
component:      sssd
uid:            0
username:       root
hostname:       ci-vm-10-0-152-197.hosted.upshift.rdu2.redhat.com
os_release:     Red Hat Enterprise Linux release 8.1 Beta (Ootpa)
architecture:   x86_64
pwd:            /
kernel:         4.18.0-136.el8.x86_64
abrt_version:   2.10.9
exploitable:
:Likely crash reason: Jump to an invalid address
:Exploitable rating (0-9 scale): 6

Reports:
uReport: BTHASH=8b44e4b9c0da7715d2198e37adfe691e76a468d3
ABRT Server: URL=http://faf.lab.eng.brq.redhat.com/faf/reports/bthash/8b44e4b9c0da7715d2198e37adfe691e76a468d3
ABRT Server: URL=http://faf.lab.eng.brq.redhat.com/faf/reports/12208/
Bugzilla: URL=https://bugzilla.redhat.com/show_bug.cgi?id=1734248
CI Job: https://idm-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/job/sgoveas-dev-pipeline/job/newjobs/2/

Comment 5 Alexey Tikhonov 2019-10-14 10:36:12 UTC
Hi Pavel,

this bug seems to be very similar to one you recently investigated - bz 1752730

backtrace here is:
```
_dbus_list_unlink()
_dbus_list_remove_link()
_dbus_message_remove_counter()
...
```

How do you think, can we close this bug as a duplicate?

Comment 6 Pavel Březina 2019-10-15 11:11:04 UTC
Yes, the backtrace is similar. This actually makes me more confident that the problem is in dbus since we do not do any magic with the dbus message here in sbus_watch_handler.

We should mark it as a duplicate, but first - Steeve, does this happen randomly or always?

Comment 10 Pavel Březina 2019-11-05 10:35:35 UTC
Ok, the logs didn't reveal any problem in sssd. The last debug message comes from `sbus_watch_toggle` which doesn't call any dbus function. After `sbus_watch_toggle` finish, `sbus_watch_handle` is called since some event occured on file descriptor and this function calls `dbus_watch_handle` which produces this crash. Since the backtrace is similar, I'm marking it as duplicate of https://bugzilla.redhat.com/show_bug.cgi?id=1752730

Comment 11 Pavel Březina 2019-11-05 10:36:37 UTC

*** This bug has been marked as a duplicate of bug 1752730 ***

Comment 12 Alexey Tikhonov 2019-12-13 16:45:14 UTC
*** Bug 1656451 has been marked as a duplicate of this bug. ***