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Bug 1858288

Summary: After applying latest updates, SSSD with multiple LDAP back-ends crashes
Product: Red Hat Enterprise Linux 7 Reporter: Karvik Kimalane <karvik.kimalane>
Component: sssdAssignee: SSSD Maintainers <sssd-maint>
Status: CLOSED DUPLICATE QA Contact: sssd-qe <sssd-qe>
Severity: urgent Docs Contact:
Priority: unspecified    
Version: 7.8CC: atikhono, grajaiya, jhrozek, lslebodn, mzidek, pbrezina, tscherf
Target Milestone: rcKeywords: Reopened
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Hardware: All   
OS: Linux   
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Clone Of: Environment:
Last Closed: 2020-07-17 14:16:02 UTC Type: Bug
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Flags
Sample configuration with multiple ldap back-ends none

Description Karvik Kimalane 2020-07-17 12:25:52 UTC
Created attachment 1701553 [details]
Sample configuration with multiple ldap back-ends

Description of problem:


Version-Release number of selected component (if applicable):

sssd packages version 1.16.4-37.el7_8.3


How reproducible:
every time


Steps to Reproduce:
1. update sssd from version 1.16.4-21.el7_7.3 to1.16.4-37.el7_8.3
2. restart sssd daemon
3. daemon fails

Actual results:
hard failure, entire sssd based identity managemnt dies


Expected results:
sssd starts and provides it's intended services to the system


Additional info:
Exactly the same configuration with multiple ldap back-end domains works correctly with version 1.16.4-21.el7_7.3 but fails with segfault when updated to 1.16.4-37
dmesg:
[Thu Jul 16 16:13:54 2020] sssd_be[172815]: segfault at 0 ip 00007fea26d302e2 sp 00007ffd755e19e8 error 4 in libsss_util.so[7fea26d13000+8c000]
[Thu Jul 16 16:13:54 2020] Code: d0 75 07 48 83 c4 18 5b 5d c3 e8 c9 9d ff ff 66 0f 1f 84 00 00 00 00 00 48 8b 86 c0 00 00 00 48 8b 4e 08 48 8d 15 86 ad 04 00 <48> 8b 30 31 c0 e9 64 a0 ff ff 0f 1f 40 00 55 48 89 fd 31 ff 53 48

Comment 2 Alexey Tikhonov 2020-07-17 12:46:12 UTC

*** This bug has been marked as a duplicate of bug 1854317 ***

Comment 3 Alexey Tikhonov 2020-07-17 12:50:52 UTC
This is duplicate of RHEL7 bz 1854317 and Fedora bz 1792184

Comment 4 Karvik Kimalane 2020-07-17 13:48:01 UTC
How is it a duplicate, I can't see it. Result is the same, sssd crashes but according to github the issue marked as duplicate was fix in January although in July similar crashes appear. I marked this issue as urgen for a reason! I did update few systems to the latest patch lavel at the beginning of the June but still there is no fix for this crash despite that I'm not the only one facing this issue.

Comment 5 Alexey Tikhonov 2020-07-17 14:16:02 UTC
Please check bz 1792184 which is public (btw, there are offered a couple of temporary workarounds)

Issue is fixed upstream in `master` branch, in Fedora and in RHEL8.

Is is not yet fixed in RHEL7 and this is tracked in bz 1854317 (I will check if description can be made public or will add a public comment). Please, do not reopen this ticket as this won't help in anyway.

*** This bug has been marked as a duplicate of bug 1854317 ***