Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 55634

Summary:	lpq (lpr-0.50.1-1) segfaults when trying to access a queue with entries in it.
Product:	[Retired] Red Hat Linux	Reporter:	Michael McConnell <linux>
Component:	lpr	Assignee:	Tim Waugh <twaugh>
Status:	CLOSED ERRATA	QA Contact:	Brock Organ <borgan>
Severity:	high	Docs Contact:
Priority:	medium
Version:	6.2
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2001-12-18 22:43:00 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:

Description Michael McConnell 2001-11-03 12:28:54 UTC

From Bugzilla Helper:
User-Agent: Mozilla/4.78 [en] (X11; U; Linux 2.2.19 i586)

Description of problem:
lpq crashes with a segmentation fault when trying to query entries in a
printer queue when there are entries in it. 

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


How reproducible:
Always

Steps to Reproduce:
1. Print something (e.g. RHS Printtool -> Tests -> Print Postscript test
page) with printer switched off. (This will make sure the queue can't
empty.)
2. At a shell: lpq -Plpc

	

Actual Results:  Segmentation fault.
(no other information given)

Expected Results:  An entry detailing the entry in the queue, who sent it
and how big it is.

Additional info:

Occured both with the RHLinux compiled binary package, and a package
recompiled locally from the source RPM.

This is with lpr-0.50.1-1

Comment 1 Michael McConnell 2001-11-03 12:31:52 UTC

My printer configuration:

Epson Stylus Color 880, connected via parallel port.
Using Epson Stylus Color (UP) driver on /dev/lp0,
with rhs-printfilters-1.63-4.rh6.2.i386.rpm installed.

Comment 2 Kuszmaul, Bradley 2001-11-05 06:16:26 UTC

I get the same behavior (segfault) for a remote lpd printer.
Going back from package lpr-0.50.1-1 to lpr-0.50-7.6.x fixed the problem.
 ftp://updates.redhat.com/6.2/en/os/i386/lpr-0.50-7.6.x.i386.rpm

Comment 3 Fabrice Bellet 2001-11-06 09:53:45 UTC

This line has been lost from previous lpr-0.50 version. This makes sense,
when cp here previously has a NULL value taken from the 
(cp = checkremote()) assignment fews lines above.

--- lpr-0.50.1/common_source/displayq.c.bak	Tue Nov  6 10:40:59 2001
+++ lpr-0.50.1/common_source/displayq.c	Tue Nov  6 10:41:15 2001
@@ -159,6 +159,7 @@
 
		warn();
 
	else {
 
		/* get daemon pid */
+
		cp = current;
 
		ep = cp + sizeof(current) - 1;
 
		while ((c = getc(fp)) != EOF && c != '\n' && cp < ep)
 
			cp++;

Comment 4 Crutcher Dunnavant 2001-11-07 03:36:45 UTC

Grumble. Will fix (again).

Comment 5 Tim Waugh 2002-01-10 11:54:01 UTC

This is fixed now.