Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.
First Last Prev Next    This bug is not in your last search results.
Bug 595827 - page refcount leak in cifs
page refcount leak in cifs
Status: CLOSED CURRENTRELEASE
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel (Show other bugs)
6.0
All Linux
high Severity high
: rc
: ---
Assigned To: Jeff Layton
yanfu,wang
:
Depends On:
Blocks:
  Show dependency tree / graph
 
Reported: 2010-05-25 13:51 EDT by Jeff Layton
Modified: 2010-11-11 10:53 EST (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2010-11-11 10:53:37 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

  None (edit)
Description Jeff Layton 2010-05-25 13:51:18 EDT 
One of the patches for bug 591483 introduces a page refcount leak. Machines that have CIFS filesystems under heavy I/O (particularly for reads) are susceptible to OOM kills. I've proposed a patch upstream to fix this which has been acked by Nick Piggin.

Once I confirm that the CIFS maintainer will take in the patch, I'll post it for RHEL6. I think we want this in the next beta if at all possible.
Comment 2 Aristeu Rozanski 2010-06-03 15:58:21 EDT 
Patch(es) available on kernel-2.6.32-32.el6
Comment 5 yanfu,wang 2010-08-04 22:40:23 EDT 
I run fsstress on cifs filesystem for a few hours and no OOM kills error occurs on.
# uname -a
Linux dell-pem605-01.rhts.eng.bos.redhat.com 2.6.32-54.el6.x86_64 #1 SMP Wed Jul 28 00:06:54 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
# rpm -qa|grep samba
samba-winbind-clients-3.5.4-65.el6.x86_64
samba-common-3.5.4-65.el6.x86_64
samba-client-3.5.4-65.el6.x86_64
# rpm -qa|grep nfs-utils
nfs-utils-1.2.2-5.el6.x86_64
nfs-utils-lib-1.1.5-1.el6.x86_64
# cat /proc/mounts 
//localhost/public/ /cifs cifs rw,mand,relatime,unc=\\localhost\public,username=root,uid=0,noforceuid,gid=0,noforcegid,addr=0000:0000:0000:0000:0000:0000:0000:0001,posixpaths,acl,rsize=16384,wsize=57344 0 0
# nohup ./fsstress -d /cifs  -l 0 -n 1000 -p 4 -r &
Comment 6 releng-rhel@redhat.com 2010-11-11 10:53:37 EST 
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.
Note You need to log in before you can comment on or make changes to this bug.
First Last Prev Next    This bug is not in your last search results.