Loading...

XML

Word

Printable

Type: Bug
Resolution: Done-Errata
Priority: Normal
Fix Version/s: rhel-8.10
Affects Version/s: rhel-8.8.0
Component/s: glibc
Labels:

Fixed in Build:
glibc-2.28-239.el8
Regression:
None
Severity:
Moderate
Epic Link:
RHEL-15455
Keywords:

ZStream

Pool Team:

rhel-sst-pt-libraries
Sub-System Group:

ssg_platform_tools

Dev Target Milestone:
11
Internal Target Milestone:
13
Story Points:
1
Blocked:
False
Blocked Reason:

Hide

None

Show
None
Product Documentation Required:
Yes
Sprint:
None
Release Blocker:
Approved Blocker

Preliminary Testing:
Pass
Test Link:
https://tcms.engineering.redhat.com/case/615923/
Errata Link:
https://errata.devel.redhat.com/advisory/122573
Test Coverage:
None

Release Note Type:
Bug Fix
Release Note Text:

Hide
.`ncsd` no longer fails to start due to inconsistent cache expiry information

Previously, the `glibc` Name Service Switch Caching Daemon (`nscd`) could fail to start due to inconsistent cache expiry information in the persistent cache file. With this update, `ncsd` now marks cache entries with inconsistent timing information for deletion and skips them. As a result, `ncsd` no longer fails to start due to inconsistent cache expiry information.

Show
.`ncsd` no longer fails to start due to inconsistent cache expiry information Previously, the `glibc` Name Service Switch Caching Daemon (`nscd`) could fail to start due to inconsistent cache expiry information in the persistent cache file. With this update, `ncsd` now marks cache entries with inconsistent timing information for deletion and skips them. As a result, `ncsd` no longer fails to start due to inconsistent cache expiry information.
Release Note Status:
Done

Experience:
Architecture:

Unspecified
Bugzilla Bug:
RHBZ: 2217921

PX Impact Score:
PX Priority Data:
SFDC Cases Counter:
SFDC Cases Open:
SFDC Cases Links:

Planning:
None

Description of problem:

NSCD exits with ABRT when reading `passwd` cache.

Version-Release number of selected component (if applicable):
glibc-2.28-189.1.el8.x86_64

How reproducible:
always

Steps to Reproduce:
1. start nscd
2. ABRT almost immediately

Actual results:
strace shows :

[pid 219045] write(2</dev/null>, "nscd: cache.c:426: prune_cache: Assertion `dh->usable' failed.\n", 63) = 63

Expected results:
runs without error

Additional info:

Debug output (actual IDs redacted for safety / confidentiality) :

Mon 26 Jun 2023 06:55:18 PM EDT - 452466: Reloading "<redacted>" in user database cache!
Mon 26 Jun 2023 06:55:18 PM EDT - 452466: Reloading "<redacted>" in user database cache!
Mon 26 Jun 2023 06:55:18 PM EDT - 452466: Reloading "<redacted>" in user database cache!
Mon 26 Jun 2023 06:55:18 PM EDT - 452466: Reloading "<redacted>" in user database cache!
nscd: cache.c:426: prune_cache: Assertion `dh->usable' failed.

Back trace :

#0 0x00007fd2d11336cc in __nscd_get_map_ref () from /lib64/libc.so.6
#1 0x00007fd2d112fa7a in nscd_getpw_r () from /lib64/libc.so.6
#2 0x00007fd2d112feac in __nscd_getpwuid_r () from /lib64/libc.so.6
#3 0x00007fd2d10c6dbf in getpwuid_r@@GLIBC_2.2.5 () from /lib64/libc.so.6
#4 0x00007fd2d17d0976 in pam_modutil_getpwuid () from /lib64/libpam.so.0
#5 0x00007fd2cdd8cb12 in pam_sm_authenticate () from /usr/lib64/security/pam_succeed_if.so
#6 0x00007fd2d17ca7b4 in _pam_dispatch () from /lib64/libpam.so.0
#7 0x00005630c43259a3 in cron_close_pam ()
#8 0x00005630c43251cf in do_command ()
#9 0x00005630c4324170 in job_runqueue ()
#10 0x00005630c432193c in main ()

bt full attached.

is cloned by

RHEL-3397 glibc: nscd aborts with failed assert in prune_cache