Bug 1198671

Summary:	zsh hangs in rt_sig state in getoutput()
Product:	Red Hat Enterprise Linux 7	Reporter:	Filip Krska <fkrska>
Component:	zsh	Assignee:	Kamil Dudka <kdudka>
Status:	CLOSED ERRATA	QA Contact:	Jan Kepler <jkejda>
Severity:	medium	Docs Contact:
Priority:	urgent
Version:	7.2	CC:	fkrska, jkejda, kdudka, mkolaja, ovasik
Target Milestone:	beta	Keywords:	ZStream
Target Release:	7.3
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	zsh-5.0.2-19.el7	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	1338663 (view as bug list)		Environment:
Last Closed:	2016-11-03 23:01:51 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:
Bug Depends On:
Bug Blocks:	1311166, 1338663, 1622892

Comment 5 Kamil Dudka 2015-08-10 10:58:08 UTC

A similar issues is now discussed in the following thread on upstream ML:

http://www.zsh.org/mla/workers/2015/msg01897.html

Two patches were applied to address it recently:

http://sourceforge.net/p/zsh/code/ci/99586845
http://sourceforge.net/p/zsh/code/ci/df5f8255

The solution does not seem to be ready for RHEL yet.  One of the patches currently breaks the upstream test-suite on Intel x86_64:

http://www.zsh.org/mla/workers/2015/msg01961.html

Comment 6 Kamil Dudka 2015-08-10 16:15:54 UTC

The following upstream commit makes the test-suite work again:

http://sourceforge.net/p/zsh/code/ci/a07f74fa

Comment 7 Kamil Dudka 2015-08-11 14:55:36 UTC

Yet another follow-up commit upstream:

http://sourceforge.net/p/zsh/code/ci/93ca77f8

Comment 8 Kamil Dudka 2015-08-11 17:24:42 UTC

Two more upstream commits on this topic:

http://sourceforge.net/p/zsh/code/ci/1af2e6e0
http://sourceforge.net/p/zsh/code/ci/128bf385

Comment 9 Kamil Dudka 2015-08-17 08:26:04 UTC

One more commit upstream:

http://sourceforge.net/p/zsh/code/ci/5d019f42

Comment 10 Kamil Dudka 2015-09-10 14:38:11 UTC

One more commit upstream:

http://sourceforge.net/p/zsh/code/ci/9f5dffa1

Comment 11 Kamil Dudka 2016-03-01 12:31:04 UTC

The above patches may change the order of execution under some circumstances, which can be observed as a change in behavior inappropriate for RHEL-6 in its current phase of life.

I am moving this bug to RHEL-7 but for RHEL-6 I will pick the fixes that look safe enough to be applied on RHEL-6 (the signal queuing guards around code using heap memory allocation).  I will use bug #1311166 for the RHEL-6 fixes.

Comment 12 Kamil Dudka 2016-03-01 12:40:07 UTC

*** Bug 1311172 has been marked as a duplicate of this bug. ***

Comment 14 Kamil Dudka 2016-03-01 15:31:26 UTC

I have picked one more upstream commit to make sure that pattern matching will not become less interruptible because of the other upstream patches that were backported:

http://sourceforge.net/p/zsh/code/ci/8672d19f

Comment 19 Kamil Dudka 2016-03-09 16:08:42 UTC

This seems to be also related (although more about interactive use of zsh):

https://sourceforge.net/p/zsh/code/ci/f4dfca49

Comment 29 errata-xmlrpc 2016-11-03 23:01:51 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, 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://rhn.redhat.com/errata/RHBA-2016-2152.html