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Bug 1904153 - glibc: Transaction ID collisions cause slow DNS lookups in getaddrinfo [rhel-8.3.0.z]
Summary: glibc: Transaction ID collisions cause slow DNS lookups in getaddrinfo [rhel-...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: glibc
Version: 8.3
Hardware: All
OS: Linux
unspecified
high
Target Milestone: rc
: ---
Assignee: Florian Weimer
QA Contact: qe-baseos-tools-bugs
URL:
Whiteboard:
: 1903880 (view as bug list)
Depends On: 1868106
Blocks: 1886394
TreeView+ depends on / blocked
 
Reported: 2020-12-03 17:22 UTC by RHEL Program Management Team
Modified: 2023-07-18 14:30 UTC (History)
33 users (show)

Fixed In Version: glibc-2.28-127.el8_3.1
Doc Type: Bug Fix
Doc Text:
.The `glibc` DNS stub resolver correctly processes parallel queries with identical transaction IDs Prior to this update, the DNS stub resolver in the GNU C library `glibc` did not process responses to parallel queries with identical transaction IDs correctly. Consequently, when the transaction IDs were equal, the second parallel response was never matched to a query, resulting in a timeout and retry. With this update, the second parallel response is now recognized as valid. As a result, the `glibc` DNS stub resolver avoids excessive timeouts due to unrecognized responses.
Clone Of: 1868106
Environment:
Last Closed: 2021-02-16 14:36:33 UTC
Type: ---
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
IBM Linux Technology Center 190136 0 None None None 2020-12-03 17:38:11 UTC

Comment 2 Florian Weimer 2020-12-11 14:52:07 UTC 
*** Bug 1903880 has been marked as a duplicate of this bug. ***
Comment 6 Sergey Kolosov 2020-12-18 08:41:28 UTC 
Verified with resolv/tst-resolv-txnid-collision
Comment 10 errata-xmlrpc 2021-02-16 14:36:33 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (glibc bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:0556
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