Bug 233746

Summary:	pstack can cause process to suspend
Product:	Red Hat Enterprise Linux 4	Reporter:	Jan Kratochvil <jan.kratochvil>
Component:	gdb	Assignee:	Jan Kratochvil <jan.kratochvil>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.0	CC:	cagney
Target Milestone:	---	Keywords:	Patch
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	RHBA-2007-0811	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-11-15 16:11:53 UTC	Type:	---
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:	189607
Bug Blocks:	292971, 483262

Description Jan Kratochvil 2007-03-24 15:29:54 UTC

+++ This bug was initially created as a clone of Bug #189607 +++

gdb-6.3.0.0-1.132.EL4.x86_64
kernel-smp-2.6.9-42.0.10.EL.x86_64

First terminal:
- compile signal_test:
gcc -Wall -g -o signal_test signal_test.c
- run signal_test

Second terminal:
- killall -ALRM signal_test
- while true ; do pstack `pidof signal_test` > /dev/null ; done

Let it run for a little while (about 5 minutes in my tests), and as soon as you
type "Ctrl+C" in the second terminal, signal_test will be in "stopped" state.

This line will show on the first terminal:
[1]+  Stopped                 ./signal_test

-- Additional comment from mschmidt on 2007-03-08 11:41 EST --
Created an attachment (id=149583)
a modified testcase


-- Additional comment from jan.kratochvil on 2007-03-23 19:24 EST --
Committed:
[ to RHEL3 ]
* Fri Mar 23 2007 Jan Kratochvil <jan.kratochvil> - 6.3.0.0-1.137
- Never lose any pending signal while attaching - resubmit them (BZ 189607).

Comment 1 RHEL Program Management 2007-07-29 18:13:55 UTC

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.

Comment 2 RHEL Program Management 2007-07-29 18:15:15 UTC

This bugzilla has Keywords: Regression.  

Since no regressions are allowed between releases, 
it is also being proposed as a blocker for this release.  

Please resolve ASAP.

Comment 5 Andrew Cagney 2007-07-30 19:10:18 UTC

Fix available, new tests added.

Comment 10 errata-xmlrpc 2007-11-15 16:11:53 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2007-0811.html