System panic at sysfs_addrm_start+0x3d/0xd0

Issue

• System panics at sysfs_addrm_start+0x3d/0xd0

BUG: unable to handle kernel NULL pointer dereference at 0000000000000078
IP: [<ffffffff8121822d>] sysfs_addrm_start+0x3d/0xd0
PGD 6df762b067 PUD 6e1012a067 PMD 0 
Oops: 0000 [#1] SMP 
last sysfs file: /sys/devices/pci0000:00/0000:00:03.0/0000:04:00.0/host4/rport-4:0-5/target4:0:5/4:0:5:7/block/sddf/uevent
CPU 21 
Modules linked in: ip6table_filter ip6_tables iptable_filter iptable_mangle iptable_raw iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables oracleacfs(P)(U) oracleadvm(P)(U) oracleoks(P)(U) mptctl mptbase oracleasm nfs lockd fscache auth_rpcgss nfs_acl sunrpc bonding ipmi_devintf vfat fat microcode iTCO_wdt iTCO_vendor_support lpc_ich mfd_core hpilo hpwdt ioatdma dca ipmi_si ipmi_msghandler sg ext4 jbd2 mbcache dm_round_robin sd_mod crc_t10dif qla2xxx scsi_transport_fc scsi_tgt crc32c_intel be2iscsi bnx2i cnic uio cxgb4i cxgb4 cxgb3i libcxgbi ipv6 cxgb3 libiscsi_tcp qla4xxx iscsi_boot_sysfs bnx2x libiscsi ptp pps_core scsi_transport_iscsi libcrc32c mdio dm_multipath dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]

Pid: 22434, comm: ktune Tainted: P           -- ------------    2.6.32-696.3.1.el6.x86_64 #1 HP Superdome2 16s x86
RIP: 0010:[<ffffffff8121822d>]  [<ffffffff8121822d>] sysfs_addrm_start+0x3d/0xd0
RSP: 0018:ffff880e74de3c08  EFLAGS: 00010286
RAX: ffff880e74de0000 RBX: ffff880e74de3c38 RCX: ffff8801bc557900
RDX: ffff8801bc4d7900 RSI: ffff880e74de3fd8 RDI: ffffffff81aedfb0
RBP: ffff880e74de3c28 R08: ffff889fa0fe1780 R09: 00000000000001c0
R10: 00000000ffffffff R11: 00000000ffffffff R12: 0000000000000000
R13: ffff880e74de3ca0 R14: ffff88401eeaaa30 R15: 00000000fffffff4
FS:  00007ff00a9f2700(0000) GS:ffff8801bc4c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000078 CR3: 0000006ebcc55000 CR4: 00000000001407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Process ktune (pid: 22434, threadinfo ffff880e74de0000, task ffff88401e442040)
Stack:
 ffff880f38ca0550 ffff880e74de3ca0 0000000000000000 ffff880e74de3c38
<d> ffff880e74de3c88 ffffffff8121954d 0000000000000000 0000000000000000
<d> 0000000000000000 0000000000000000 ffffffffffffffff ffff880f38ca0550
Call Trace:
 [<ffffffff8121954d>] create_dir+0x5d/0xb0
 [<ffffffff812195d9>] sysfs_create_dir+0x39/0x50
 [<ffffffff8129d1ca>] ? kobject_get+0x1a/0x30
 [<ffffffff8129d399>] kobject_add_internal+0xb9/0x260
 [<ffffffff8129d648>] kobject_add_varg+0x38/0x60
 [<ffffffff8129d724>] kobject_add+0x44/0x70
 [<ffffffff8129ce57>] ? kobject_put+0x27/0x60
 [<ffffffff81277fe8>] elv_register_queue+0x38/0xa0
 [<ffffffff8127865f>] elevator_change+0x10f/0x1f0
 [<ffffffff8127876e>] elv_iosched_store+0x2e/0x60
 [<ffffffff8128202a>] queue_attr_store+0x6a/0xb0
 [<ffffffff81217315>] sysfs_write_file+0xe5/0x170
 [<ffffffff81199e48>] vfs_write+0xb8/0x1a0
 [<ffffffff8119b336>] ? fget_light_pos+0x16/0x50
 [<ffffffff8119a981>] sys_write+0x51/0xb0
 [<ffffffff810ee4ce>] ? __audit_syscall_exit+0x25e/0x290
 [<ffffffff8100b0d2>] system_call_fastpath+0x16/0x1b
Code: fb 49 89 f4 48 c7 47 08 00 00 00 00 48 c7 47 10 00 00 00 00 48 c7 47 18 00 00 00 00 48 c7 c7 a0 df ae 81 48 89 33 e8 83 3a 33 00 <49> 8b 74 24 78 48 8b 3d 2f 76 dd 00 4c 89 e1 48 c7 c2 20 7f 21 
RIP  [<ffffffff8121822d>] sysfs_addrm_start+0x3d/0xd0
 RSP <ffff880e74de3c08>
CR2: 0000000000000078