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Bug 1113045

Summary:	Race condition in cupsdReadClient()
Product:	Red Hat Enterprise Linux 7	Reporter:	Tim Waugh <twaugh>
Component:	cups	Assignee:	Tim Waugh <twaugh>
Status:	CLOSED ERRATA	QA Contact:	qe-baseos-daemons
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.0	CC:	jscotka, psklenar
Target Milestone:	rc	Keywords:	Patch
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	cups-1.6.3-16.el7	Doc Type:	Bug Fix
Doc Text:	When the CUPS scheduler reads data from a client, it did not check for data availability in between reading the HTTP headers and the IPP request. This lead to a race condition causing client requests to fail depending on the timing of the data packets. The scheduler now checks for data availability, preventing the race condition.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-03-05 09:08:56 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:

Description Tim Waugh 2014-06-25 10:54:50 UTC

Description of problem:
There is a race condition in cupsdReadClient(), fixed upstream.

Version-Release number of selected component (if applicable):
cups-1.6.3-14.el7

How reproducible:
100%

Steps to Reproduce:
Run 'gdb --args lp /etc/fstab' and set a breakpoint on http_write_chunk. Running this through to the breakpoint causes the scheduler to drop the connection with 'IPP read error'.

Actual results:
Bad request

Expected results:
Job submitted after continuing from breakpoint.

Comment 4 errata-xmlrpc 2015-03-05 09:08:56 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-2015-0386.html