Bug 114960 - nfs layer livelocks after after using up all of the kmap space
Summary: nfs layer livelocks after after using up all of the kmap space
Alias: None
Product: Red Hat Enterprise Linux 2.1
Classification: Red Hat
Component: kernel (Show other bugs)
(Show other bugs)
Version: 2.1
Hardware: All Linux
Target Milestone: ---
Assignee: Steve Dickson
QA Contact: Brian Brock
: 114209 (view as bug list)
Depends On: 58216 89453
Blocks: 107565
TreeView+ depends on / blocked
Reported: 2004-02-04 20:54 UTC by Jason Baron
Modified: 2013-03-06 05:56 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2004-08-18 14:25:16 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2004:437 normal SHIPPED_LIVE Low: Updated kernel packages fix security vulnerability 2004-09-21 04:00:00 UTC

Description Jason Baron 2004-02-04 20:54:26 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.2)

Description of problem:
Some of the rpc layer calls kmap in the the same thread. This can lead
to livelock when there are lots of threads and i/o. ie high load. This
bug is being created to track a number of places where this bug has
been hit. related bz #89453, bz #114209, and bz #58216. Issue tracker
is: it #33097.

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

How reproducible:
Didn't try

Additional info:

Comment 1 Jason Baron 2004-02-04 20:58:44 UTC
ABI issues might be a pain on this one but i'm adding to the blocker
list, since this is a serious and prevalent issue.

Comment 2 Jason Baron 2004-02-12 20:15:22 UTC
we can use this 'tracker' bug to mark progress. Dave Anderson is
currently building a kernel through beehive, that we can give out to
test to partners.

Comment 3 Dave Anderson 2004-02-12 23:02:08 UTC
Binary RPMs containing test kernels can found in:


Comment 5 Jason Baron 2004-07-09 20:19:26 UTC
ok, we've fixed this by adding the nfs module parameters, which should
be set as: nfs_max_request_hard=60 nfs_max_request_soft=30. Fix is in U5.

Comment 6 Jason Baron 2004-07-09 20:21:05 UTC
*** Bug 114209 has been marked as a duplicate of this bug. ***

Comment 7 John Flanagan 2004-08-18 14:25:16 UTC
An errata 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 the 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.


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