Bug 1408168 – tar hangs with --extract --xattrs --skip-old-files

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Bug 1408168 - tar hangs with --extract --xattrs --skip-old-files

Summary:	tar hangs with --extract --xattrs --skip-old-files

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	tar (Show other bugs)
Sub Component:
Version:	7.2
Hardware:	Unspecified Unspecified

Priority	unspecified Severity unspecified
Target Milestone:	rc
Target Release:	---
Assigned To:	Pavel Raiskup
QA Contact:	Vaclav Danek
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:	1399036
Blocks:
	Show dependency tree / graph

Reported:	2016-12-22 06:04 EST by Pavel Raiskup
Modified:	2018-04-10 07:31 EDT (History)
CC List:	9 users (show)

See Also:
Fixed In Version:	tar-1.26-33.el7
Doc Type:	Bug Fix
Doc Text:	Cause: Tar mistakenly tried to extract extended attributes also for files which were not expected to be extracted. Consequence: Tar got stuck in busy loop, repeatedly trying to restore extended file attributes. Fix: The extended attribute extraction method was fixed to respect --skip-old-files option. Result: Tar now behaves properly with --xattrs and --skip-old-files.
Story Points:	---
Clone Of:	1399036
Environment:
Last Closed:	2018-04-10 07:30:49 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2018:0716	None	None	None	2018-04-10 07:31 EDT

Groups: None (edit)

Description Pavel Raiskup 2016-12-22 06:04:43 EST

The busy hang is IMO worth fixing in RHEL 7, too.

+++ This bug was initially created as a clone of Bug #1399036 +++)

Steps to reproduce:

$ tar tvf a.tar --xattrs
-rw-------* praiskup/praiskup 0 2016-11-28 07:06 a
$ touch a
$ tar xf a.tar --xattrs --skip-old-files
[busy loop..]

Upstream report:
http://www.mail-archive.com/bug-tar@gnu.org/msg05184.html

Upstream fix:
597b0ae509 and ca9399d4e

Comment 1 Tomas Repik 2017-01-05 03:16:15 EST

(In reply to Pavel Raiskup from comment #0)

Tried to reproduce it but I'm not able to.
I'm not sure how to get this output line:
> -rw-------* praiskup/praiskup 0 2016-11-28 07:06 a

expecialy the star in file mode.

Comment 2 Pavel Raiskup 2017-01-05 03:25:41 EST

Some files in archive need to have xattrs set.

Comment 14 Vaclav Danek 2017-12-15 05:33:21 EST

143: xattrs: basic functionality                     ok
144: xattrs: change directory with -C option         ok
146: xattrs: s/open/openat/ regression               ok
147: xattrs: keywords with '=' and '%'               ok
148: xattrs: exclude xattrs on create                ok
149: xattrs: xattrs and --skip-old-files             ok
=> Verified

Comment 17 errata-xmlrpc 2018-04-10 07:30:49 EDT

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, 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-2018:0716

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