Bug 5984

Summary:	lockd kernel panic in nlmclnt_mark_reclaim
Product:	File System	Reporter:	Hallstein (hallstein)
Component:	NFS	Assignee:	Trond Myklebust (trondmy)
Status:	REJECTED INSUFFICIENT_DATA
Severity:	high	CC:	nacc, protasnb
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.9-22.0.1.ELsmp	Subsystem:
Regression:	---	Bisected commit-id:

Description Hallstein 2006-01-31 01:06:33 UTC

Most recent kernel where this bug did not occur: (unknown)
Distribution: CentOS release 4.2
Hardware Environment: Dell PowerEdge 2650
Software Environment: NFS/SMB Server (samba-3.0.10-1.4E.2)

Problem Description:

We've encountered Kernel Panic in lockd (nlmclnt_mark_reclaim) several times 
in the last months. This seem to be related to heavy usage on server. 

The server runs Samba export of NFS imported (and local) filesystems. 

A picture of the panic is here: 
http://www.ii.uib.no/~hallstei/kernelpanic_screen.jpg

After this panic, the computer stops responding, and we are forced to reboot 
the computer.



Steps to reproduce:
Seem related to high load, but otherwise difficult to reproduce.

Comment 1 Nishanth Aravamudan 2006-01-31 09:48:55 UTC

I think your kernel is a distro kernel. Not a kernel.org one. If that is the
case, please file a bug with the distribution. If you can reproduce the same
situation with 2.6.15, or 2.6.16-rc1, it is more likely we could help. Presuming
this is a distro kernel bug and you are unable to reproduce it in a more recent
kernel.org kernel, I'll close the bug.

Thanks,
Nish

Comment 2 Hallstein 2006-02-01 05:57:24 UTC

ive posted the bug at https://bugzilla.redhat.com/bugzilla/show_bug.cgi?
id=179545 and I hope redhat will look into it.  The bug *might* be related to 
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=176848

Comment 3 Trond Myklebust 2006-02-01 07:13:56 UTC

This bug has also been seen on newer kernels and reported on LKML. I'm still in
the process of tracking it down.

Comment 4 Natalie Protasevich 2007-07-06 18:50:07 UTC

Any updates on this problem?
Hallstein, have you tested with newer kernels?
Thanks.