Bug 640117

Summary: [RHEL4.5] select() cannot return in UDP/UNIX domain socket [rhel-4.8.z]
Product: Red Hat Enterprise Linux 4 Reporter: Benjamin Kahn <bkahn>
Component: kernelAssignee: Don Howard <dhoward>
Status: CLOSED ERRATA QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: medium Docs Contact:
Priority: urgent    
Version: 4.8CC: agospoda, bkahn, cww, dhoward, fleitner, haliu, pm-eus, tao
Target Milestone: rcKeywords: ZStream
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
For UDP/UNIX domain sockets, due to insufficient memory barriers in the network code, a process sleeping in select() may have missed notifications about new data. In rare cases, this bug may have caused a process to sleep forever.
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-10-19 18:48:27 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 546251    
Bug Blocks:    

Description Benjamin Kahn 2010-10-04 21:04:46 UTC
This bug has been copied from bug #546251 and has been proposed
to be backported to 4.8 z-stream (EUS).

Comment 3 Don Howard 2010-10-05 21:23:05 UTC
A patch for this issue has been included in kernel 2.6.9-89.31.1.EL.

Comment 5 errata-xmlrpc 2010-10-19 18:48:27 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 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-2010-0779.html

Comment 6 Martin Prpič 2010-10-21 12:26:28 UTC
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
For UDP/UNIX domain sockets, due to insufficient memory barriers in the network code, a process sleeping in select() may have missed notifications about new data. In rare cases, this bug may have caused a process to sleep forever.