BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
IP: [<ffffffffa074fc2e>] osc_send_oap_rpc+0x11e/0x1580 [osc]
PGD 100d933067 PUD 100b9c3067 PMD 0
Oops: 0002 [#1] SMP
last sysfs file: /sys/devices/pci0000:00/0000:00:14.4/0000:01:04.0/local_cpus
CPU 6
Modules linked in: mgc(U) lustre(U) lov(U) mdc(U) lquota(U) osc(U) ptlrpc(U) autofs4 ipmi_devintf ipmi_si ipmi_msghandle
r sunrpc bonding ib_ucm(U) rdma_ucm(U) ib_ipoib(U) ib_uverbs(U) ib_umad(U) iw_nes(U) libcrc32c iw_cxgb3(U) cxgb3(U) ib_q
ib(U) mlx4_ib(U) mlx4_en(U) mlx4_core(U) ib_mthca(U) ko2iblnd(U) rdma_cm(U) ib_cm(U) iw_cm(U) ib_sa(U) ib_mad(U) ib_core
(U) ib_addr(U) ipv6 obdclass(U) lnet(U) lvfs(U) libcfs(U) dm_mirror dm_region_hash dm_log xpmem(U) xp gru xvma(U) numato
ols(U) sr_mod cdrom ixgbe mdio sg igb dca microcode serio_raw ghes hed k10temp hwmon i2c_piix4 i2c_core shpchp ext3 jbd
mbcache sd_mod crc_t10dif usb_storage mptsas mptscsih mptbase scsi_transport_sas pata_acpi ata_generic pata_atiixp ahci
dm_mod [last unloaded: ipmi_msghandler]

Modules linked in: mgc(U) lustre(U) lov(U) mdc(U) lquota(U) osc(U) ptlrpc(U) autofs4 ipmi_devintf ipmi_si ipmi_msghandle
r sunrpc bonding ib_ucm(U) rdma_ucm(U) ib_ipoib(U) ib_uverbs(U) ib_umad(U) iw_nes(U) libcrc32c iw_cxgb3(U) cxgb3(U) ib_q
ib(U) mlx4_ib(U) mlx4_en(U) mlx4_core(U) ib_mthca(U) ko2iblnd(U) rdma_cm(U) ib_cm(U) iw_cm(U) ib_sa(U) ib_mad(U) ib_core
(U) ib_addr(U) ipv6 obdclass(U) lnet(U) lvfs(U) libcfs(U) dm_mirror dm_region_hash dm_log xpmem(U) xp gru xvma(U) numato
ols(U) sr_mod cdrom ixgbe mdio sg igb dca microcode serio_raw ghes hed k10temp hwmon i2c_piix4 i2c_core shpchp ext3 jbd
mbcache sd_mod crc_t10dif usb_storage mptsas mptscsih mptbase scsi_transport_sas pata_acpi ata_generic pata_atiixp ahci
dm_mod [last unloaded: ipmi_msghandler]
Pid: 23004, comm: flush-lustre-1 Not tainted 2.6.32-131.0.15.el6.x86_64 #1 C2108-G9
RIP: 0010:[<ffffffffa074fc2e>]  [<ffffffffa074fc2e>] osc_send_oap_rpc+0x11e/0x1580 [osc]
RSP: 0018:ffff8803ffe0d6a0  EFLAGS: 00010246
RAX: ffff880401ea0a18 RBX: ffff880401ea0a10 RCX: 0000000000000000
RDX: ffff8803df175390 RSI: 000000000000000b RDI: 0000000000000000
RBP: ffff8803ffe0d7e0 R08: 0000000000000002 R09: 0000000000000010
R10: ffffffffa0806ee0 R11: 0000000000000000 R12: fffffffffffffff8
R13: 0000000000000094 R14: ffff8803df175390 R15: ffff881005fbaa10
FS:  00007ffff7fdf700(0000) GS:ffff88042e400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000008 CR3: 000000100d9b6000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process flush-lustre-1 (pid: 23004, threadinfo ffff8803ffe0c000, task ffff8803fdd02080)
Stack:
 ffff8803ffe0d7a8 ffff880300000000 ffffffff00000000 ffff8803ffe0d7e8
<0> ffff8803ffe0d758 0000000000000000 ffffea002a28fb78 ffff880820010e00
<0> 0000000000000000 ffff8803ffe0d790 ffff8803ffe0d730 ffffffff8104fc48
Call Trace:
 [<ffffffff8104fc48>] ? update_curr+0xf8/0x1e0
 [<ffffffffa0751121>] osc_check_rpcs+0x91/0x3d0 [osc]
 [<ffffffff81055d33>] ? perf_event_task_sched_out+0x33/0x80
 [<ffffffffa0745e03>] ? on_list+0x43/0x50 [osc]
 [<ffffffffa0751545>] osc_set_async_flags+0xe5/0x5d0 [osc]
 [<ffffffffa085a241>] ? llap_from_page_with_lockh.clone.8+0x2a1/0x1120 [lustre]
[<ffffffffa07c6273>] lov_set_async_flags+0x133/0x460 [lov]
 [<ffffffff81122879>] ? test_set_page_writeback+0xe9/0x1a0
 [<ffffffffa085b2b4>] ll_writepage+0x1f4/0x6a0 [lustre]
 [<ffffffff8110cee0>] ? find_get_pages_tag+0x40/0x120
 [<ffffffffa0876d6e>] ll_writepage_26+0xe/0x10 [lustre]
 [<ffffffff81120e67>] __writepage+0x17/0x40
 [<ffffffff811221f9>] write_cache_pages+0x1c9/0x4a0
 [<ffffffff81120e50>] ? __writepage+0x0/0x40
 [<ffffffff811224f4>] generic_writepages+0x24/0x30
 [<ffffffff81122521>] do_writepages+0x21/0x40
 [<ffffffff8119bbbd>] writeback_single_inode+0xdd/0x2c0
 [<ffffffff8119bfbe>] writeback_sb_inodes+0xce/0x180
 [<ffffffff8119c11b>] writeback_inodes_wb+0xab/0x1b0
 [<ffffffff8119c4bb>] wb_writeback+0x29b/0x3f0
 [<ffffffff814db337>] ? thread_return+0x4e/0x777
 [<ffffffff8107a202>] ? del_timer_sync+0x22/0x30
 [<ffffffff8119c7a9>] wb_do_writeback+0x199/0x240
 [<ffffffff8119c8b3>] bdi_writeback_task+0x63/0x1b0
 [<ffffffff8108e027>] ? bit_waitqueue+0x17/0xd0
 [<ffffffff81130b90>] ? bdi_start_fn+0x0/0x100
 [<ffffffff81130c16>] bdi_start_fn+0x86/0x100
 [<ffffffff81130b90>] ? bdi_start_fn+0x0/0x100
 [<ffffffff8108ddf6>] kthread+0x96/0xa0
 [<ffffffff8100c1ca>] child_rip+0xa/0x20
 [<ffffffff8108dd60>] ? kthread+0x0/0xa0
 [<ffffffff8100c1c0>] ? child_rip+0x0/0x20
Code: 0e 48 83 bb 80 00 00 00 00 0f 84 c3 0e 00 00 45 85 ed 74 0b 8b 7b 40 85 ff 0f 85 ae 05 00 00 48 8b 4b 08 48 8b 53 10 48 8d 43 08 <48> 89 51 08 48 89 0a 48 89 43 08 48 89 43 10 41 83 6e 30 01 8b
RIP  [<ffffffffa074fc2e>] osc_send_oap_rpc+0x11e/0x1580 [osc]
 RSP <ffff8803ffe0d6a0>
CR2: 0000000000000008