Backtrace

NMI watchdog: BUG: soft lockup - CPU#49 stuck for 22s! [kworker/49:0:25181]
Modules linked in: veth xt_addrtype br_netfilter yrfs(OE) cmac arc4 md4 nls_utf8 cifs ccm 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 ebtables ip6table_filter ip6_tables iptable_filter fuse rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache rdma_ucm(OE) ib_ucm(OE) rdma_cm(OE) iw_cm(OE) ib_ipoib(OE) ib_cm(OE) ib_uverbs(OE) ib_umad(OE) mlx5_fpga_tools(OE) mlx5_ib(OE) mlx5_core(OE) mlxfw(OE) mlx4_en(OE) mlx4_ib(OE) ib_core(OE) mlx4_core(OE) mlx_compat(OE) devlink overlay(T) sunrpc vfat fat sb_edac coretemp intel_rapl iosf_mbi kvm_intel kvm irqbypass crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul
glue_helper ablk_helper cryptd iTCO_wdt iTCO_vendor_support mxm_wmi ses mei_me enclosure i2c_i801 pcspkr sg mei joydev ipmi_si ipmi_devintf shpchp lpc_ich ipmi_msghandler wmi acpi_power_meter knem(OE) ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic ast drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm ahci libahci mpt3sas ixgbe igb libata crct10dif_pclmul crct10dif_common crc32c_intel megaraid_sas mdio i2c_algo_bit ptp raid_class pps_core i2c_core scsi_transport_sas dca dm_mirror dm_region_hash dm_log dm_mod
CPU: 49 PID: 25181 Comm: kworker/49:0 Kdump: loaded Tainted: G           OEL ------------ T 3.10.0-862.el7.x86_64 #1
Hardware name:   4U Rack Server/60G24-US, BIOS 227 05/07/2018
Workqueue: rpciod rpc_async_schedule [sunrpc]
task: ffff96df9a6e9fa0 ti: ffff96deb6768000 task.ti: ffff96deb6768000
RIP: 0010:[<ffffffff9ea4aa77>]  [<ffffffff9ea4aa77>] tcp_ack+0x217/0x12f0
RSP: 0018:ffff96deb676bae0  EFLAGS: 00000292
RAX: 0000000000000001 RBX: ffffffff9ea4b6e0 RCX: 000000000000195c
RDX: 00000000ffffffff RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff96deb676baf8 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000b5ac9b4c
R13: ffff96f64de087c0 R14: ffffffff9ea4ef7d R15: ffff96deb676ba58
FS:  0000000000000000(0000) GS:ffff96f65fbc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000549d1a82000 CR3: 000000181aac0000 CR4: 00000000001607e0
Call Trace:
[<ffffffff9ea4c115>] tcp_rcv_established+0x1d5/0x770
[<ffffffff9ea56dda>] tcp_v4_do_rcv+0x10a/0x350
[<ffffffff9e9d15e6>] release_sock+0xa6/0x170
[<ffffffff9ea4252d>] tcp_sendpage+0xdd/0x5c0
[<ffffffff9ea6e5f0>] ? inet_sendmsg+0xb0/0xb0
[<ffffffff9ea6e660>] inet_sendpage+0x70/0xe0
[<ffffffffc05a2235>] xs_sendpages+0x135/0x200 [sunrpc]
[<ffffffffc05a3b31>] xs_tcp_send_request+0x91/0x220 [sunrpc]
[<ffffffffc05a017b>] xprt_transmit+0x6b/0x330 [sunrpc]
[<ffffffffc059bf50>] call_transmit+0x1d0/0x2c0 [sunrpc]
[<ffffffffc059bd80>] ? call_decode+0x880/0x880 [sunrpc]
[<ffffffffc059bd80>] ? call_decode+0x880/0x880 [sunrpc]
[<ffffffffc05a9369>] __rpc_execute+0x99/0x420 [sunrpc]
[<ffffffffc05a9702>] rpc_async_schedule+0x12/0x20 [sunrpc]
[<ffffffff9e4b2dff>] process_one_work+0x17f/0x440
[<ffffffff9e4b3ac6>] worker_thread+0x126/0x3c0
[<ffffffff9e4b39a0>] ? manage_workers.isra.24+0x2a0/0x2a0
[<ffffffff9e4bae31>] kthread+0xd1/0xe0
[<ffffffff9e4bad60>] ? insert_kthread_work+0x40/0x40
[<ffffffff9eb1f637>] ret_from_fork_nospec_begin+0x21/0x21
[<ffffffff9e4bad60>] ? insert_kthread_work+0x40/0x40
Code: 18 06 00 00 b8 01 00 00 00 85 d2 0f 85 a3 07 00 00 48 8b 7d d0 65 48 33 3c 25 28 00 00 00 0f 85 72 0e 00 00 48 83 c4 68 5b 41 5c <41> 5d 41 5e 41 5f 5d c3 90 85 c9 0f 89 88 fe ff ff 44 89 e0 2b