Red Hat Bugzilla – Bug 455491
backport of fix endless page faults in mount_block_root for Linux 2.6 from 2.6.26 to RHEL5-U3
Last modified: 2009-01-20 15:15:51 EST
Description of problem:
x86: fix endless page faults in mount_block_root for Linux 2.6
Page faults in kernel address space between PAGE_OFFSET up to
VMALLOC_START should not try to map as vmalloc.
Fix rarely endless page faults inside mount_block_root for root
filesystem at boot time.
Version-Release number of selected component (if applicable):
The physically memory was trimmed down to 192MB to better catch the bug.
More memory gets the bug more rarely.
Steps to Reproduce:
Log error in /var.log/messages.
Created attachment 311865 [details]
Patch that fixes this problem.
Raise as exception:
Part of x86 2.6.26 backport to RHEL5 merge. for more detail info of
the feature please see bug 455409.
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
You can download this test kernel from http://people.redhat.com/dzickus/el5
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.