[Ocfs2-users] Kernel panic on OCFS2 1.2.6-6 for EL5

[Daniel]

Hello

I'm still having weekly panics on my system, but now I've at least got
something to report back from the netconsole.

To summarize system: 2x Dell 1950 connected to a EMC CX3-20 SAN. Centos 5
x86_64 2.6.18-8.1.8.el5 #1 SMP.

Tonight both servers locked up - both while idling afaik. But this time
tilesrv2 reported the following via netconsole before it went dead.

(4225,2):dlm_drop_lockres_ref:2289 ERROR: while dropping ref on
359E1C1D38374654BC5E5896EB7D5187:M0000000000000009cb578f4d7803fc (master=0)
got -22.
(4225,2):dlm_print_one_lock_resource:294 lockres:
M0000000000000009cb578f4d7803fc, owner=0, state=64
(4225,2):__dlm_print_one_lock_resource:309 lockres:
M0000000000000009cb578f4d7803fc, owner=0, state=64
(4225,2):__dlm_print_one_lock_resource:311   last used: 4354492857, on purge
list: yes
(4225,2):dlm_print_lockres_refmap:277   refmap nodes: [ ], inflight=0
(4225,2):__dlm_print_one_lock_resource:313   granted queue:
(4225,2):__dlm_print_one_lock_resource:328   converting queue:
(4225,2):__dlm_print_one_lock_resource:343   blocked queue:
----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at ...mushran/BUILD/ocfs2-1.2.6/fs/ocfs2/dlm/dlmmaster.c:2291
invalid opcode: 0000 [1] SMP
last sysfs file: /devices/pci0000:00/0000:00:04.0/0000:0c:00.0
/host1/rport-1:0-1/target1:0:1/1:0:1:4/vendor
CPU 2
Modules linked in: netconsole autofs4 hidp ocfs2(U) nfs lockd fscache
nfs_acl rfcomm l2cap bluetooth ocfs2_dlmfs(U) ocfs2_dlm(U)
ocfs2_nodemanager(U) configfs sunrpc ipt_REJECT ip6t_REJECT xt_tcpudp
ip6table_filter ip6_tables x_tables dm_emc dm_round_robin dm_multipath video
sbs i2c_ec i2c_core button battery asus_acpi acpi_memhotplug ac ipv6
parport_pc lp parport joydev shpchp bnx2 sr_mod ide_cd serio_raw cdrom sg
pcspkr dm_snapshot dm_zero dm_mirror dm_mod usb_storage qla2xxx
scsi_transport_fc megaraid_sas sd_mod scsi_mod ext3 jbd ehci_hcd
ohci_hcdPid: 4225, comm: dlm_thread Not tainted 2.6.18-8.1.8.el5 #1
 [<ffffffff884d60d3>] :ocfs2_dlm:dlm_drop_lockres_ref+0x1d3/0x1ec
RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffffffff802da65c
R13: ffff81012d087000 R14: ffff8100435c5f60 R15: ffffffff8009b4f6
CR2: 000000001ec07000 CR3: 00000001289c9000 CR4: 00000000000006e0
 303030303030304d
 0000000000000000 0000000000000000 ffff81001defe648 [<ffffffff884e9031>]
:ocfs2_dlm:dlm_purge_lockres+0x175/0x34a
 [<ffffffff8009b6b9>] autoremove_wake_function+0x0/0x2e
 [<ffffffff884e93c2>] :ocfs2_dlm:dlm_thread+0x0/0x579
 [<ffffffff80032189>] kthread+0xfe/0x132
 [<ffffffff8005bfe5>] child_rip+0xa/0x11
 [<ffffffff8009b4f6>] keventd_create_kthread+0x0/0x61
 [<ffffffff8005bfdb>] child_rip+0x0/0x11
0f d6 c2 83 d8 5c  [<ffffffff884d60d3>]
:ocfs2_dlm:dlm_drop_lockres_ref+0x1d3/0x1ec
<0>Kernel panic - not syncing: Fatal exception

I'd be happy to provide more info or open a bug-report. Just tell me what
you need. I hope this is a better report than last time :)

Daniel
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