kernel panic occurred due to NULL pointer dereference in the function voldmp_iodone().

Issue

• kernel panic occurred due to NULL pointer dereference in the function voldmp_iodone().

BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<(null)>] (null)
PGD 8000002010a31067 PUD 2010a32067 PMD 0 
Oops: 0010 [#1] SMP 
last sysfs file: /sys/devices/system/cpu/online
CPU 5 
Modules linked in: tcp_diag inet_diag ext3 xfs jbd ext2 mptctl mptbase amf(P)(U) nfs lockd fscache auth_rpcgss nfs_acl sunrpc dmpjbod(P)(U) dmpap(P)(U) dmpaa(P)(U) vxspec(P)(U) vxio(P)(U) vx
dmp(P)(U) bonding ipv6 ipt_REJECT iptable_filter ip_tables vxcafs(P)(U) vxportal(P)(U) fdd(P)(U) vxfs(P)(U) exportfs dm_mirror dm_region_hash dm_log dm_mod microcode iTCO_wdt iTCO_vendor_sup
port serio_raw hpilo hpwdt lpc_ich mfd_core power_meter acpi_ipmi ipmi_si ipmi_msghandler tg3 ptp pps_core ch osst st sg joydev ioatdma dca shpchp ext4 jbd2 mbcache sd_mod crc_t10dif pata_ac
pi ata_generic ata_piix qla2xxx hpsa scsi_transport_fc scsi_tgt [last unloaded: scsi_wait_scan]

Pid: 0, comm: swapper Tainted: P           -- ------------    2.6.32-696.18.7.el6.x86_64 #1 HP ProLiant DL380p Gen8
RIP: 0010:[<0000000000000000>]  [<(null)>] (null)
RSP: 0018:ffff8800b0943bd8  EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffff88200b133800 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88200b133800
RBP: ffff8800b0943be0 R08: 0000000000008800 R09: 000000005e7352f1
R10: ffff88200dbf2a40 R11: 0000000000000000 R12: ffff88200b123800
R13: ffff88200deef400 R14: 0000000000000005 R15: ffff88200b04bc00
FS:  0000000000000000(0000) GS:ffff8800b0940000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 0000001f7b652000 CR4: 00000000000607e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffff882012a8c000, task ffff882012a78040)
Stack:
 ffffffffa087fd0f ffff8800b0943bf0 ffffffff811d4eed ffff8800b0943c40
<d> ffffffffa0797c5a ffff880000000000 0000000000000000 ffff8800b0943c20
<d> ffff88200b123800 0000000000000000 ffff881c950b28e0 0000000000002000
Call Trace:
 <IRQ> 
 [<ffffffffa087fd0f>] ? voldmp_iodone+0x5f/0x80 [vxio] <<
 [<ffffffff811d4eed>] bio_endio+0x1d/0x40
 [<ffffffffa0797c5a>] gendmpiodone+0x1da/0x270 [vxdmp] <<
 [<ffffffffa0799112>] dmpiodone+0x52/0xf0 [vxdmp]
 [<ffffffff811d4eed>] bio_endio+0x1d/0x40
 [<ffffffff8127ccdb>] req_bio_endio+0x9b/0xe0
 [<ffffffff81281537>] blk_update_request+0x117/0x500
 [<ffffffff8127d6df>] ? blk_run_queue+0x3f/0x50
 [<ffffffff81281947>] blk_update_bidi_request+0x27/0xa0
 [<ffffffff81281d8f>] blk_end_bidi_request+0x2f/0x80
 [<ffffffff81281e30>] blk_end_request+0x10/0x20
 [<ffffffff813a4970>] scsi_io_completion+0xc0/0x6c0
 [<ffffffff8139ad5d>] scsi_finish_command+0xcd/0x130
 [<ffffffff813a50d7>] scsi_softirq_done+0x147/0x170
 [<ffffffff81286975>] blk_done_softirq+0x85/0xa0
 [<ffffffff810859a5>] __do_softirq+0xe5/0x230
 [<ffffffff810f41d0>] ? handle_IRQ_event+0x60/0x170
 [<ffffffff81557bfc>] call_softirq+0x1c/0x30
 [<ffffffff8100e545>] do_softirq+0x65/0xa0
 [<ffffffff81085835>] irq_exit+0x85/0x90
 [<ffffffff81558b55>] do_IRQ+0x75/0xf0
 [<ffffffff815571d3>] ret_from_intr+0x0/0x11
 <EOI> 
 [<ffffffff812fe7c3>] ? intel_idle+0x123/0x220
 [<ffffffff812fe7a6>] ? intel_idle+0x106/0x220
 [<ffffffff814447ca>] cpuidle_idle_call+0x7a/0xe0
 [<ffffffff81009fc6>] cpu_idle+0xb6/0x110
 [<ffffffff81544cb3>] start_secondary+0x2e1/0x337
Code:  Bad RIP value.
RIP  [<(null)>] (null)
 RSP <ffff8800b0943bd8>
CR2: 0000000000000000