Issue

• One of Cluster Node autoreboot
• Cluster node panics with this message:

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kernel BUG at fs/gfs2/glock.c:133!
invalid opcode: 0000 [#1] SMP 
last sysfs file: /sys/devices/system/cpu/cpu15/cache/index2/shared_cpu_map
CPU 11 
Modules linked in: nfsd exportfs nfs lockd fscache nfs_acl auth_rpcgss sunrpc gfs2 dlm configfs pcc_cpufreq bonding ipv6 dm_round_robin scsi_dh_alua dm_multipath microcode hpilo hpwdt serio_raw iTCO_wdt iTCO_vendor_support sg be2iscsi iscsi_boot_sysfs libiscsi scsi_transport_iscsi power_meter be2net ioatdma dca shpchp ext4 mbcache jbd2 sd_mod crc_t10dif qla2xxx scsi_transport_fc scsi_tgt hpsa video output dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]

Pid: 178, comm: kswapd0 Tainted: G        W  ----------------   2.6.32-220.7.1.el6.x86_64 #1 HP ProLiant BL460c Gen8
RIP: 0010:[<ffffffffa02cfc70>]  [<ffffffffa02cfc70>] gfs2_glock_hold+0x20/0x30 [gfs2]
RSP: 0018:ffff8802381bdc30  EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff880348fb74a0 RCX: 00000000000017c5
RDX: 0000000000000000 RSI: 0000000000000046 RDI: 0000000000000246
RBP: ffff8802381bdc30 R08: 0000000000000000 R09: ffffffff8163a940
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000080
R13: 00000000000001f4 R14: 00000000000000a6 R15: ffff8802381bdc50
FS:  0000000000000000(0000) GS:ffff88002f6e0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 00007feedad45000 CR3: 0000000001a85000 CR4: 00000000000406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process kswapd0 (pid: 178, threadinfo ffff8802381bc000, task ffff8802381bb500)
Stack:
 ffff8802381bdc90 ffffffffa02cfd1c ffff8802381bdc90 ffff880348fb7568
<0> ffff880385f7ac20 ffff8801414b5340 ffffffffffffffff ffffffffa02fa160
<0> 0000000000000085 00000000000001f4 00000000000000d0 0000000000012ae0
Call Trace:
 [<ffffffffa02cfd1c>] gfs2_shrink_glock_memory+0x9c/0x210 [gfs2]
 [<ffffffff8112995a>] shrink_slab+0x12a/0x1a0
 [<ffffffff8112c70d>] balance_pgdat+0x57d/0x7e0
 [<ffffffff8112cd20>] ? isolate_pages_global+0x0/0x350
 [<ffffffff8112caa6>] kswapd+0x136/0x3b0
 [<ffffffff81090a90>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff8112c970>] ? kswapd+0x0/0x3b0
 [<ffffffff81090726>] kthread+0x96/0xa0
 [<ffffffff8100c14a>] child_rip+0xa/0x20
 [<ffffffff81090690>] ? kthread+0x0/0xa0
 [<ffffffff8100c140>] ? child_rip+0x0/0x20
Code: 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 0f 1f 44 00 00 8b 47 28 85 c0 74 06 f0 ff 47 28 c9 c3 48 89 fe 31 ff e8 f0 fc ff ff <0f> 0b eb fe 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 48 
RIP  [<ffffffffa02cfc70>] gfs2_glock_hold+0x20/0x30 [gfs2]
 RSP <ffff8802381bdc30>