Scheduling while atomic from an nfs4 thread

Issue

May  7 09:17:28 ptgbsedge12 kernel: [14338.470344] BUG: scheduling while atomic: <server IP address>-ma/42220/0x00000002
May  7 09:17:28 ptgbsedge12 kernel: [14338.470356] Modules linked in: vfat fat usb_storage tcp_diag inet_diag mbook_mapper(O) dis_sisci(O) mpt3sas mpt2sas scsi_transport_sas mptctl mptbase ipmi_si dell_rbu dis_ssocks(PO) dis_msq(PO) dis_mbox(PO) rpcsec_gss_krb5 auth_rpcgss oid_registry nfsv4 nfs lockd sunrpc dis_irm(O) dis_ix_ntb(PO) dis_ix_dma(PO) dis_kosif(O) netconsole configfs ipv6 gpio_ich iTCO_wdt iTCO_vendor_support dcdbas coretemp freq_table mperf crc32c_intel ghash_clmulni_intel microcode pcspkr sfc_aoe(O) onload(O) sfc_char(O) sfc_resource(O) sfc_affinity(O) sfc(O) mtd mdio lpc_ich joydev ipmi_devintf ipmi_msghandler shpchp sg igb dca ptp pps_core acpi_power_meter hwmon ext4 jbd2 mbcache sd_mod crc_t10dif aesni_intel ablk_helper cryptd lrw aes_x86_64 xts gf128mul ahci libahci megaraid_sas wmi mgag200 ttm drm_kms_helper drm i2c_algo_bit sysimgblt sysfillrect i2c_core syscopyarea dm_mirror dm_region_hash dm_log dm_mod [last unloaded: ipmi_si]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470358] CPU: 10 PID: 42220 Comm: <server IP address>-ma Tainted: P        W  O 3.10.33-rt32.52.el6rt.x86_64 #1
May  7 09:17:28 ptgbsedge12 kernel: [14338.470358] Hardware name: Dell Inc. PowerEdge R620/0VV3F2, BIOS 2.4.3 07/09/2014
May  7 09:17:28 ptgbsedge12 kernel: [14338.470359]  000000000000000a ffff8803d8b45a88 ffffffff8157610e ffff8803d8b45a98
May  7 09:17:28 ptgbsedge12 kernel: [14338.470360]  ffffffff8108362a ffff8803d8b45b28 ffffffff8157766c 0000000000000000
May  7 09:17:28 ptgbsedge12 kernel: [14338.470361]  ffff8803d8b44000 ffff8803d8b44000 ffff8803d8b44010 ffff8803d8b45fd8
May  7 09:17:28 ptgbsedge12 kernel: [14338.470361] Call Trace:
May  7 09:17:28 ptgbsedge12 kernel: [14338.470363]  [<ffffffff8157610e>] dump_stack+0x19/0x1b
May  7 09:17:28 ptgbsedge12 kernel: [14338.470364]  [<ffffffff8108362a>] __schedule_bug+0x5a/0x70
May  7 09:17:28 ptgbsedge12 kernel: [14338.470365]  [<ffffffff8157766c>] __schedule+0x7cc/0x800
May  7 09:17:28 ptgbsedge12 kernel: [14338.470369]  [<ffffffffa0666680>] ? __rpc_wait_for_completion_task+0x30/0x30 [sunrpc]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470370]  [<ffffffff81577884>] schedule+0x34/0xa0
May  7 09:17:28 ptgbsedge12 kernel: [14338.470374]  [<ffffffffa06666b8>] rpc_wait_bit_killable+0x38/0x80 [sunrpc]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470375]  [<ffffffff815765cf>] __wait_on_bit+0x5f/0x90
May  7 09:17:28 ptgbsedge12 kernel: [14338.470379]  [<ffffffffa0666680>] ? __rpc_wait_for_completion_task+0x30/0x30 [sunrpc]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470380]  [<ffffffff81576678>] out_of_line_wait_on_bit+0x78/0x90
May  7 09:17:28 ptgbsedge12 kernel: [14338.470381]  [<ffffffff810773d0>] ? autoremove_wake_function+0x40/0x40
May  7 09:17:28 ptgbsedge12 kernel: [14338.470386]  [<ffffffffa066667d>] __rpc_wait_for_completion_task+0x2d/0x30 [sunrpc]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470388]  [<ffffffffa06f8a03>] _nfs4_proc_open_confirm+0xe3/0x150 [nfsv4]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470392]  [<ffffffffa06fbf80>] nfs4_open_recover_helper+0x100/0x110 [nfsv4]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470394]  [<ffffffffa06fc097>] nfs4_open_recover+0x107/0x180 [nfsv4]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470397]  [<ffffffffa06ff75f>] ? nfs4_open_recoverdata_alloc+0x2f/0x60 [nfsv4]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470400]  [<ffffffffa06ff819>] nfs4_open_expired+0x89/0x140 [nfsv4]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470404]  [<ffffffffa070bfc4>] nfs4_do_reclaim+0x1b4/0x6e0 [nfsv4]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470407]  [<ffffffffa070c5a6>] nfs4_run_state_manager+0xb6/0x590 [nfsv4]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470410]  [<ffffffffa070c4f0>] ? nfs4_do_reclaim+0x6e0/0x6e0 [nfsv4]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470414]  [<ffffffffa070c4f0>] ? nfs4_do_reclaim+0x6e0/0x6e0 [nfsv4]
May  7 09:17:28 ptgbsedge12 kernel: [14338.470415]  [<ffffffff81076dbe>] kthread+0xbe/0xd0
May  7 09:17:28 ptgbsedge12 kernel: [14338.470416]  [<ffffffff81076d00>] ? kthreadd+0x1e0/0x1e0
May  7 09:17:28 ptgbsedge12 kernel: [14338.470417]  [<ffffffff81581c6c>] ret_from_fork+0x7c/0xb0
May  7 09:17:28 ptgbsedge12 kernel: [14338.470418]  [<ffffffff81076d00>] ? kthreadd+0x1e0/0x1e0