Backtrace

NMI watchdog: BUG: soft lockup - CPU#55 stuck for 23s! [mount.nfs4:42240]
Modules linked in: nfsd mgc(OE) lustre(OE) lmv(OE) mdc(OE) fid(OE) osc(OE) lov(OE) fld(OE) ko2iblnd(OE) ptlrpc(OE) obdclass(OE) lnet(OE) libcfs(OE) tcp_lp nfsv3 nfs_acl fuse xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 tun bridge stp llc ebtable_filter devlink ebtables ip6table_filter ip6_tables iptable_filter rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache ib_isert iscsi_target_mod ib_srpt target_core_mod ib_srp scsi_transport_srp scsi_tgt ib_ucm i40iw rpcrdma sunrpc rdma_ucm ib_uverbs ib_iser opa_vnic ib_umad rdma_cm iw_cm ib_ipoib libiscsi scsi_transport_iscsi ib_cm squashfs loop iTCO_wdt iTCO_vendor_support skx_edac intel_powerclamp
coretemp intel_rapl iosf_mbi kvm irqbypass crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd hfi1 rdmavt ib_core joydev pcspkr sg mei_me i2c_i801 lpc_ich mei ipmi_si ipmi_devintf ipmi_msghandler wmi acpi_pad acpi_power_meter sch_fq_codel binfmt_misc ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic crct10dif_pclmul crct10dif_common crc32c_intel ast drm_kms_helper syscopyarea sysfillrect i40e sysimgblt fb_sys_fops ttm igb drm ptp pps_core megaraid_sas dca ahci i2c_algo_bit libahci drm_panel_orientation_quirks libata nfit libnvdimm dm_mirror dm_region_hash dm_log dm_mod
CPU: 55 PID: 42240 Comm: mount.nfs4 Kdump: loaded Tainted: G           OEL ------------   3.10.0-957.el7.x86_64 #1
Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019
task: ffffa14bf51cd140 ti: ffffa17a87d7c000 task.ti: ffffa17a87d7c000
RIP: 0010:[<ffffffff9c56a3f0>]  [<ffffffff9c56a3f0>] _raw_spin_lock+0x10/0x30
RSP: 0018:ffffa17a87d7fb00  EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff9bec2956 RCX: 0000000000000003
RDX: 0000000000000001 RSI: ffffa17af1eddfb8 RDI: ffffa17af1eddfb8
RBP: ffffa17a87d7fb60 R08: ffffa17a87d7fad0 R09: ffffa17af1eddf00
R10: ffffa17a87ec6728 R11: 0000000000000005 R12: 0000000000000293
R13: 0000000000000293 R14: ffffffffc0a68070 R15: ffffa17a87d7fad0
FS:  00002aed3ca61f80(0000) GS:ffffa17afc2c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002aed3d141038 CR3: 0000005f0cff0000 CR4: 00000000007607e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
[<ffffffffc0a40ebb>] ? nfs_get_client+0x23b/0x470 [nfs]
[<ffffffffc0ac439c>] nfs4_set_client+0x9c/0x150 [nfsv4]
[<ffffffffc0ac5b4e>] nfs4_create_server+0x13e/0x3b0 [nfsv4]
[<ffffffffc0abcbae>] nfs4_remote_mount+0x2e/0x60 [nfsv4]
[<ffffffff9c045bde>] mount_fs+0x3e/0x1b0
[<ffffffff9bfdaff5>] ? __alloc_percpu+0x15/0x20
[<ffffffff9c063777>] vfs_kern_mount+0x67/0x110
[<ffffffffc0abcad6>] nfs_do_root_mount+0x86/0xc0 [nfsv4]
[<ffffffffc0abced4>] nfs4_try_mount+0x44/0xc0 [nfsv4]
[<ffffffffc0a416e7>] ? get_nfs_version+0x27/0x90 [nfs]
[<ffffffffc0a4dd3b>] nfs_fs_mount+0x4cb/0xdc0 [nfs]
[<ffffffffc0a4eca0>] ? nfs_clone_super+0x140/0x140 [nfs]
[<ffffffffc0a4cb40>] ? param_set_portnr+0x70/0x70 [nfs]
[<ffffffff9c045bde>] mount_fs+0x3e/0x1b0
[<ffffffff9bfdaff5>] ? __alloc_percpu+0x15/0x20
[<ffffffff9c063777>] vfs_kern_mount+0x67/0x110
[<ffffffff9c065d9f>] do_mount+0x1ef/0xce0
[<ffffffff9c065ad5>] ? copy_mount_options+0xc5/0x170
[<ffffffff9c066bd3>] SyS_mount+0x83/0xd0
[<ffffffff9c574ddb>] system_call_fastpath+0x22/0x27
Code: 44 00 00 85 d2 74 e4 0f 1f 40 00 eb ed 66 0f 1f 44 00 00 b8 01 00 00 00 5d c3 90 0f 1f 44 00 00 31 c0 ba 01 00 00 00 f0 0f b1 17 <85> c0 75 01 c3 55 89 c6 48 89 e5 e8 40 1b ff ff 5d c3 0f 1f 40