Bug 1891790

Summary:	nft crashes with "Unknown expression binop"
Product:	Red Hat Enterprise Linux 8	Reporter:	Denis Silakov <dsilakov>
Component:	nftables	Assignee:	Phil Sutter <psutter>
Status:	CLOSED ERRATA	QA Contact:	Tomas Dolezal <todoleza>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	8.2	CC:	snemec, todoleza
Target Milestone:	rc	Keywords:	Triaged, Upstream
Target Release:	8.0	Flags:	pm-rhel: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	nftables-0.9.3-17.el8	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-18 15:10:15 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 Denis Silakov 2020-10-27 11:33:11 UTC

Description of problem:

In certain setups, nft crashes with the following message:

BUG: Unknown expression binop
nft: mergesort.c:47: expr_msort_cmp: Assertion `0' failed.
Aborted (core dumped)

Seems to be a known bug, fixed upstream:
http://git.netfilter.org/nftables/commit/?id=3926a3369bb5ada5c0706dadcbcf938517822a35

Is it possible to pick that fix to RH 8?

Comment 1 Phil Sutter 2020-11-04 13:09:25 UTC

Hi Denis,

(In reply to Denis Silakov from comment #0)
> Description of problem:
> 
> In certain setups, nft crashes with the following message:
> 
> BUG: Unknown expression binop
> nft: mergesort.c:47: expr_msort_cmp: Assertion `0' failed.
> Aborted (core dumped)
> 
> Seems to be a known bug, fixed upstream:
> http://git.netfilter.org/nftables/commit/
> ?id=3926a3369bb5ada5c0706dadcbcf938517822a35
> 
> Is it possible to pick that fix to RH 8?

Sure, thanks for the report and analysis! Are you OK with this being fixed in RHEL8.4 or do you need a backport into an earlier release?

Thanks, Phil

Comment 2 Denis Silakov 2020-11-04 16:02:33 UTC

8.4 is ok.

Comment 12 errata-xmlrpc 2021-05-18 15:10:15 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 (nftables 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/RHEA-2021:1722