[Bug 1884912] New: [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by SIGSEGV

https://bugzilla.redhat.com/show_bug.cgi?id=1884912

Bug ID: 1884912
           Summary: [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by
                    SIGSEGV
           Product: Fedora
           Version: 32
          Hardware: x86_64
            Status: NEW
        Whiteboard: abrt_hash:a07038fd78acc47fd66b266203cafebd50509e00;VAR
                    IANT_ID=workstation;
         Component: sssd
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail]
  Target Milestone: ---
             Group: fedora_contrib_private
    Classification: Fedora

Description of problem:
Always happens when the Kerberos tickets expire after letting the system sit
overnight.

Log in to Redhat krbtgt/[e-mail]
let the system sit overnight, or until ticket expires
try to login via gdm or vt
login fails

Version-Release number of selected component:
sssd-common-2.3.1-2.fc32

Additional info:
reporter:       libreport-2.13.1
backtrace_rating: 4
cgroup:         0::/system.slice/sssd.service
cmdline:        /usr/libexec/sssd/sssd_be --domain redhat.com --uid 0 --gid 0
--logger=files
crash_function: __strcmp_avx2
executable:     /usr/libexec/sssd/sssd_be
journald_cursor:
s=a7dff00ea3904bcf94e9c47f3af11249;i=99168;b=d69fa027bac74e0c82bae802fce15dc2;m=8e9b12f6b4;t=5b0c43dd4cdcb;x=5af4a1ece75efc5a
kernel:         5.7.17-200.fc32.x86_64
rootdir:        /
runlevel:       N 5
type:           CCpp
uid:            0

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 __strcmp_avx2 at ../sysdeps/x86_64/multiarch/strcmp-avx2.S:101
 #1 be_resolve_server_process at src/providers/data_provider_fo.c:671
 #2 be_resolve_server_done at src/providers/data_provider_fo.c:555
 #3 fo_resolve_service_server at src/providers/fail_over.c:1165
 #4 _tevent_req_error at ../../tevent_req.c:211
 #5 resolve_srv_done at src/providers/fail_over.c:1466
 #6 fo_discover_srv_done at src/providers/fail_over_srv.c:141
 #7 resolv_discover_srv_done at src/resolv/async_resolv_utils.c:302
 #8 resolv_getsrv_done at src/resolv/async_resolv.c:1762
 #9 qcallback at /usr/src/debug/c-ares-1.15.0-5.fc32.x86_64/ares_query.c:183

Potential duplicate: bug 1773488

[Bug 1884912] [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by SIGSEGV

https://bugzilla.redhat.com/show_bug.cgi?id=1884912

--- Comment #13 from Ross Brattain  ---
Looks like dup of https://bugzilla.redhat.com/show_bug.cgi?id=1773488

I can reproduce at will, just let the system sit overnight.

[Bug 1884912] [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by SIGSEGV

https://bugzilla.redhat.com/show_bug.cgi?id=1884912

Ross Brattain  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|unspecified                 |high

--- Comment #16 from Ross Brattain  ---
severity High because it locks me out as my user and I have to login as `root`
then `su` to fix.

[Bug 1884912] [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by SIGSEGV

https://bugzilla.redhat.com/show_bug.cgi?id=1884912

Alexey Tikhonov  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |NEW
           Assignee|[e-mail]         |[e-mail]
                   |                            |raproject.org

needinfo requested: [Bug 1884912] [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by SIGSEGV

Product: Fedora
Version: 33
Component: sssd

Alexey Tikhonov  has asked sssd-maintainers
 for needinfo:
Bug 1884912: [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by SIGSEGV
https://bugzilla.redhat.com/show_bug.cgi?id=1884912

[Bug 1884912] [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by SIGSEGV

https://bugzilla.redhat.com/show_bug.cgi?id=1884912

Alexey Tikhonov  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|[e-mail] |[e-mail]
                   |raproject.org               |
              Flags|needinfo?(sssd-maintainers@ |
                   |lists.fedoraproject.org)    |

[Bug 1884912] [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by SIGSEGV

https://bugzilla.redhat.com/show_bug.cgi?id=1884912

--- Comment #41 from Pavel Březina  ---
Hi, Ross. Does the issue still persist? If yes, can you please provide fresh
logs?
> Always happens when the Kerberos tickets expire after letting the system sit overnight.

I don't think we should focus on Kerberos here, rather on the "letting the
system sit overnight" part. Is it possible that VPN connection fails during
this time? Because I see in the logs prior the crash that SSSD can not resolve
the DNS SRV record.

My best guess at this moment is that SSSD is online, then VPN fails and SSSD
fails recover by going correctly offline and crash instead on something
unexpected.

[Bug 1884912] [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by SIGSEGV

https://bugzilla.redhat.com/show_bug.cgi?id=1884912

--- Comment #42 from Ross Brattain  ---
Has not reproduced on Fedora 33 so far.  sssd-client-2.4.2-2.fc33.x86_64

[Bug 1884912] [abrt] sssd-common: __strcmp_avx2(): sssd_be killed by SIGSEGV

https://bugzilla.redhat.com/show_bug.cgi?id=1884912

Pavel Březina  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |CLOSED
         Resolution|---                         |INSUFFICIENT_DATA
        Last Closed|                            |2021-04-08 13:19:48

--- Comment #43 from Pavel Březina  ---
Thank you for the information. I'm going to close this BZ since I was not able
to reproduce it locally and we have no new lead. Please, reopen it if the issue
occurs again.