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

[Sunil Mushran]

Please file a bugzilla. It is very hard to track issue via email.
Attach the trace below. You should also see a corresponding
message in one of the other nodes. Specifically node 0. Add
that too in the bugzilla.

Daniel wrote:
> 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