Bug 598776

Summary: fsstress on btrfs may cause kernel bug and panic
Product: Red Hat Enterprise Linux 6 Reporter: Eryu Guan <eguan>
Component: kernelAssignee: Josef Bacik <jbacik>
Status: CLOSED WORKSFORME QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: medium Docs Contact:
Priority: medium    
Version: 6.0CC: esandeen, jbacik, rwheeler
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-07-15 18:04:53 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:    
Bug Blocks: 584197    
Attachments:
Description Flags
fsstress panic log none

Description Eryu Guan 2010-06-02 02:37:03 UTC 
Created attachment 418880 [details]
fsstress panic log

Description of problem:
Run fsstress test on btrfs may cause kernel bug and panic.
Attachment is console log.

Version-Release number of selected component (if applicable):
[root@amd-drachma-01 ~]# uname -a
Linux amd-drachma-01.lab.bos.redhat.com 2.6.32-27.el6.x86_64 #1 SMP Tue May 18 12:25:26 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
[root@amd-drachma-01 ~]# rpm -q btrfs-progs nfs-utils rpcbind
btrfs-progs-0.19-10.el6.x86_64
nfs-utils-1.2.2-2.el6.x86_64
rpcbind-0.2.0-4.1.el6.x86_64

Also on RHEL6.0-Snapshot-5, that is 2.6.32-28.el6.x86_64

How reproducible:
About 50%

Steps to Reproduce:
1. Schedule /kernel/filesystems/btrfs/fsstress in rhts or beaker

2. Or yum install rh-tests-kernel-filesystems-btrfs-fsstress
   then cd to /mnt/tests/kernel/filesystems/btrfs/fsstress, make run manually
  
Actual results:
kernel bug and panic

Expected results:
Pass test all the time

Additional info:
rhts job link
http://rhts.redhat.com/cgi-bin/rhts/jobs.cgi?id=160738
beaker job link
https://beaker.engineering.redhat.com/jobs/1373

And there is a PASS test in beaker, but fsstress process may be stuck.
https://beaker.engineering.redhat.com/jobs/1388
https://beaker.engineering.redhat.com/logs/2010/88/1388/2558/24768/113246///console_dmesg--kernel-filesystems-btrfs-fsstress.log
Comment 2 Eric Sandeen 2010-06-02 12:29:48 UTC 
It looks like there was not actually a bug or a panic, but there was a soft lockup and a WARNING due to list corruption, which is bad enough ...
Comment 3 RHEL Program Management 2010-06-07 16:21:02 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
inclusion.
Comment 4 RHEL Program Management 2010-07-15 15:08:57 UTC 
This issue has been proposed when we are only considering blocker
issues in the current Red Hat Enterprise Linux release. It has
been denied for the current Red Hat Enterprise Linux release.

** If you would still like this issue considered for the current
release, ask your support representative to file as a blocker on
your behalf. Otherwise ask that it be considered for the next
Red Hat Enterprise Linux release. **
Comment 5 Ric Wheeler 2010-07-15 17:52:04 UTC 
Josef, can you validate that this does not happen in the current 6.0 builds and close it if not?  If it is still an issue, we should reflag this for 6.1 since we are not going to have tech preview items be blockers unless really severe.

Thanks!
Comment 6 Josef Bacik 2010-07-15 18:04:53 UTC 
I ran xfstests against the updated btrfs in RHEL6 and I didn't get any panics (it runs fsstress), so I'm going to close this.