Bug 424871

Summary: Implement netif_release_rx_bufs for copying receiver
Product: Red Hat Enterprise Linux 4 Reporter: Ian Campbell <ijc>
Component: kernel-xenAssignee: Don Dutile (Red Hat) <ddutile>
Status: CLOSED ERRATA QA Contact: Martin Jenner <mjenner>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.6CC: xen-maint
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHSA-2008-0665 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2008-07-24 19:23:23 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: 437423    
Bug Blocks:    
Attachments:
Description Flags
linux-2.6.18-xen 137:41918416db51 ported to 2.6.9-67.EL none

Description Ian Campbell 2007-12-14 10:58:58 UTC 
+++ This bug was initially created as a clone of Bug #424861 +++

Description of problem:

This kernel does not implement netif_release_rx_bufs for copying receiver which
leaks grant references on hot unplug. This was implemented upstream in 
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/41918416db51

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

2.6.9.67.EL

-- Additional comment from ijc.uk on 2007-12-14 05:57 EST --
Created an attachment (id=288991)
linux-2.6.18-xen 137:41918416db51 backported to 2.6.18-53.el5
Comment 1 Ian Campbell 2007-12-14 10:58:58 UTC 
Created attachment 289001 [details]
linux-2.6.18-xen 137:41918416db51 ported to 2.6.9-67.EL
Comment 2 Don Dutile (Red Hat) 2007-12-14 19:33:50 UTC 
A test is needed to show the problem & the fix.
Would a simple rmmod of xen-vnif be sufficient ?
Comment 3 Ian Campbell 2007-12-14 19:43:08 UTC 
It might but the scenario I was thinking was to attach and detach a VIF from
domain0 using xm network-attach and network-detach.
Comment 4 Bill Burns 2008-02-28 21:28:45 UTC 
Set devel ack.
Comment 5 Don Dutile (Red Hat) 2008-03-19 21:57:18 UTC 
Part of post for 437423 -- pv-on-hvm support built into rhel4.7.
Comment 7 Bill Burns 2008-04-30 18:15:46 UTC 
Fix for this is already in, as part of the post for bz 437423. Added dependency.
Comment 11 errata-xmlrpc 2008-07-24 19:23:23 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-2008-0665.html