Bug 479264 – [RHEL4] lost siginfo when a signal queue is full

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Bug 479264 - [RHEL4] lost siginfo when a signal queue is full

Summary:	[RHEL4] lost siginfo when a signal queue is full

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 4
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	4.6
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	Linda Wang
QA Contact:	Evan McNabb
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2009-01-08 09:12 EST by Tomas Smetana
Modified:	2011-02-16 11:01 EST (History)
CC List:	3 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2011-02-16 11:01:53 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Testing program (2.20 KB, text/plain) 2009-01-08 09:12 EST, Tomas Smetana	no flags	Details
Proposed patch (2.75 KB, patch) 2009-01-08 09:14 EST, Tomas Smetana	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2011:0263	normal	SHIPPED_LIVE	Important: Red Hat Enterprise Linux 4.9 kernel security and bug fix update	2011-02-16 10:14:55 EST

Groups: None (edit)

Description Tomas Smetana 2009-01-08 09:12:57 EST

Created attachment 328465 [details]
Testing program

Description of problem:
When the signal queue is filled up to RLIMIT_SIGPENDING, the subsequent signal (not originated from the sigqueue call) would miss the siginfo.

Version-Release number of selected component (if applicable):
kernel-2.6.9-78.21

How reproducible:
always

Steps to Reproduce:
1. compile and run the testing c-program.
  
Actual results:
The application prints:
signal: signo=11 si_code=0 si_addr=(nil)

Expected results:
The application prints:
signal: signo=11 si_code=1 si_addr=0xffffffff

Comment 1 Tomas Smetana 2009-01-08 09:14:49 EST

Created attachment 328466 [details]
Proposed patch

My attempt to backport the fix from RHEL-5 kernel.  Briefly tested on i386 and seems to work OK.

Comment 2 Roland McGrath 2009-05-13 14:08:41 EDT

Looks like a straightforward backport to the current upstream behavior.

Comment 3 RHEL Product and Program Management 2009-07-02 17:23:48 EDT

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 4 Vivek Goyal 2009-07-14 14:51:19 EDT

Committed in 89.6.EL . RPMS are available at http://people.redhat.com/vgoyal/rhel4/

Comment 11 errata-xmlrpc 2011-02-16 11:01:53 EST

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 therefore 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/RHSA-2011-0263.html

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