RHEL5: System with IBM mvfs filesystem crashed with RIP message as "locks_remove_flock+0xe4/0x124" in logs

Issue

• Kernel panic on locks_remove_flock.

• The panic messages captured in logs are as below:

Kernel BUG at fs/locks.c:2080
invalid opcode: 0000 [1] SMP 
last sysfs file: /devices/pci0000:00/0000:00:00.0/irq
CPU 0 
Modules linked in: mptctl mptbase ipmi_devintf ipmi_si ipmi_msghandler dell_rbu nfs fscache nfs_acl mvfs(U) autofs4 hidp l2cap bluetooth lockd sunrpc bonding ipv6 xfrm_nalgo crypto_api dm_multipath scsi_dh video backlight sbs power_meter hwmon i2c_ec i2c_core dell_wmi wmi button battery asus_acpi acpi_memhotplug ac parport_pc lp parport sr_mod joydev i5000_edac usb_storage ide_cd edac_mc bnx2 serio_raw cdrom sg pcspkr dm_raid45 dm_message dm_region_hash dm_mem_cache dm_snapshot dm_zero dm_mirror dm_log dm_mod ata_piix libata shpchp megaraid_sas sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd
Pid: 26943, comm: quartus Tainted: G      2.6.18-194.8.1.el5 #1
RIP: 0010:[<ffffffff800273b2>]  [<ffffffff800273b2>] locks_remove_flock+0xe4/0x124
RSP: 0018:ffff8102b1efbe28  EFLAGS: 00010246
RAX: ffff81043e032e48 RBX: ffff8102f4ea48d8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8032bc40
RBP: ffff8102adcda3c0 R08: 0000000000000000 R09: 000000000000003b
R10: ffff8102c7c469f0 R11: ffffffff88586a10 R12: ffff8102f4ea47d8
R13: ffff8102f4ea47d8 R14: ffff81042f0a67c0 R15: ffff8102cd934660
FS:  00002ba015eccb80(0000) GS:ffffffff803ca000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00002ba006f18fb2 CR3: 00000002cb2b9000 CR4: 00000000000006e0
Process quartus (pid: 26943, threadinfo ffff8102b1efa000, task ffff810303987820)
Stack:  00000000ffffff8c ffff810303505980 ffff8102adcda3c0 ffff8102bfae1288
 0000000000000006 ffffffff8852960e ffff8102adcda3c0 00000000ffffff8c
 00007fff31650260 00007fff31650260 000000001c02ff50 ffffffff8003071d
Call Trace:
 [<ffffffff8852960e>] :mvfs:vnode_fop_lock+0x48/0x54
 [<ffffffff8003071d>] locks_remove_posix+0x84/0xa8
 [<ffffffff80012a31>] __fput+0x94/0x1bd
 [<ffffffff80023ae4>] filp_close+0x5c/0x64
 [<ffffffff8001dfac>] sys_close+0x88/0xbd
 [<ffffffff8005d116>] system_call+0x7e/0x83


Code: 0f 0b 68 d9 28 2b 80 c2 20 08 48 89 c3 48 8b 03 48 85 c0 75 
RIP  [<ffffffff800273b2>] locks_remove_flock+0xe4/0x124
 RSP <ffff8102b1efbe28>