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User-Agent: Mozilla/5.0 (compatible; Konqueror/3.1; Linux)

Description of problem:
mount gfs on all nodes, then umount

Unable to handle kernel paging request at virtual address 01000034
 printing eip:
f8a73b90
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: gnbd lock_gulm lock_nolock lock_dlm dlm cman gfs lock_harness ipv6 parport_pc lp parport autofs4 sunrpc e1000 floppy sg microcode dm_mod uhci_hcd ehci_hcd button battery asus_acpi ac ext3 jbd qla2300 qla2xxx scsi_transport_fc sd_mod scsi_mod
CPU:    0
EIP:    0060:[<f8a73b90>]    Not tainted
EFLAGS: 00010286   (2.6.7)
EIP is at lockspace_busy+0x10/0x80 [dlm]
eax: 01000004   ebx: 00000001   ecx: 00000000   edx: 00000001
esi: f88b5f00   edi: 00000000   ebp: f6d0e200   esp: f67e3ee4
ds: 007b   es: 007b   ss: 0068
Process umount (pid: 3960, threadinfo=f67e2000 task=f6a0e5b0)
Stack: 00000000 00000001 f88b5f00 f8d38758 f6d0e200 f8a73c12 f7280190 01000004
       f7280138 f88b5f00 f8d38758 f6d0e200 f8b390ed f8b392e6 f8d34694 f88b53aa
       f8c34000 f8d38748 f8a380cf 00000000 f67e3f30 f6d0e200 f6d0e24c f8a4e5c0
Call Trace:
 [<f8a73c12>] dlm_release_lockspace+0x12/0x2e0 [dlm]
 [<f8b390ed>] release_gdlm+0xd/0x10 [lock_dlm]
 [<f8b392e6>] lm_dlm_unmount+0x16/0x30 [lock_dlm]
 [<f88b53aa>] lm_unmount+0x3a/0x78 [lock_harness]
 [<f8a380cf>] gfs_put_super+0x29f/0x330 [gfs]
 [<c0152904>] generic_shutdown_super+0x104/0x120
 [<c01531e7>] kill_block_super+0x17/0x40
 [<c0152760>] deactivate_super+0x60/0x80
 [<c016556b>] sys_umount+0x3b/0x80
 [<c014291a>] unmap_vma_list+0x1a/0x30
 [<c01655c5>] sys_oldumount+0x15/0x20
 [<c0105cad>] sysenter_past_esp+0x52/0x71

Code: 8b 68 30 39 ef 73 4b 8b 58 2c 8d b6 00 00 00 00 8b 13 39 da


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


How reproducible:
Sometimes

Steps to Reproduce:
1. mount
2. umount


Additional info: