Kernel Panics due to RIP: update_shares

Issue

• System panic with following calltraces in kernel ring buffer.

BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
IP: [<ffffffff81065291>] update_shares+0x71/0xf0
PGD 0 
last sysfs file: /sys/devices/system/cpu/online
CPU 8 
Modules linked in: iptable_filter ip_tables nfs lockd fscache auth_rpcgss nfs_acl sunrpc mpt3sas mpt2sas scsi_transport_sas raid_class mptctl mptb

Pid: 0, comm: swapper Not tainted 2.6.32-642.15.1.el6.x86_64 #1 Supermicro SSG-6028R-E1CR12H/X10DRH-iT
RIP: 0010:[<ffffffff81065291>]  [<ffffffff81065291>] update_shares+0x71/0xf0
RSP: 0018:ffff880194f03d20  EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88381cbb3a00 RCX: 0000000000000000
RDX: ffff88381cbb3a90 RSI: 0000000000000000 RDI: 0000000000000021
RBP: ffff880194f03d70 R08: ffff88407fe79400 R09: 00000002067b94a7
R10: 0000000000000400 R11: 0000000000000000 R12: 0000000000000021
R13: ffff880195077730 R14: ffff88402724bfd8 R15: 0000000000000108
FS:  0000000000000000(0000) GS:ffff880194f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000020 CR3: 0000000001a8d000 CR4: 00000000001407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffff884027248000, task ffff884027218040)
Stack:
 0000000000000001 0000000000000185 0000000000016ec0 0000000000000021
<d> ffff880194f03d70 0000000000016ec0 0000000000000021 0000000000016ec0
<d> ffff88402724bfd8 00000002067c7f07 ffff880194f03e60 ffffffff81070512
Call Trace:
 <IRQ> 
 [<ffffffff81070512>] rebalance_domains+0x52/0x6a0
 [<ffffffff810154e3>] ? native_sched_clock+0x13/0x80
 [<ffffffff81014ac9>] ? sched_clock+0x9/0x10
 [<ffffffff81070c4c>] run_rebalance_domains+0xec/0x160
 [<ffffffff81085275>] __do_softirq+0xe5/0x230
cmf-agent[29813]: segfault at 60 ip 00000036502454ac sp 00007f023d7fa150 error 4 in libpython2.6.so.1.0[3650200000+15d000]
 [<ffffffff810b8ca7>] ? update_ts_time_stats+0x67/0xa0
 [<ffffffff810adf4a>] ? sched_clock_idle_wakeup_event+0x1a/0x20
 [<ffffffff8100c38c>] call_softirq+0x1c/0x30
 [<ffffffff8100fca5>] do_softirq+0x65/0xa0
 [<ffffffff81085105>] irq_exit+0x85/0x90
 [<ffffffff81068c0e>] scheduler_ipi+0x7e/0xc0
 [<ffffffff8103746a>] smp_reschedule_interrupt+0x2a/0x30
 [<ffffffff8100beb3>] reschedule_interrupt+0x13/0x20
 <EOI> 
 [<ffffffff812fc29e>] ? intel_idle+0xfe/0x1b0
 [<ffffffff812fc281>] ? intel_idle+0xe1/0x1b0
 [<ffffffff81441eea>] cpuidle_idle_call+0x7a/0xe0
 [<ffffffff81009fe6>] cpu_idle+0xb6/0x110
 [<ffffffff815421b9>] start_secondary+0x2c0/0x316
Code: ff 0f 84 92 00 00 00 49 89 ff 48 89 45 c0 49 c1 e7 03 0f 1f 84 00 00 00 00 00 8b 8b 0c 01 00 00 85 c9 75 62 48 8b 83 a0 00 00 00 <48> 8b 50 20 4a 83 3c 3a 00 74 50 48 8b 55 c8 4c 8b 65 c0 48 8b 
RIP  [<ffffffff81065291>] update_shares+0x71/0xf0
 RSP <ffff880194f03d20>
CR2: 0000000000000020