Comment 3 for bug 1682418

Additional trace with this test is below

[80921.628988] general protection fault: 0000 [#1] SMP
[80921.630449] Modules linked in: act_mirred act_tunnel_key cls_flower sch_ingress vport_vxlan vxlan ip6_udp_tunnel udp_tunnel vfio_pci vfio_iommu_type1 vfio_virqfd vfio mlx5_ib ib_core openvswitch nf_conntrack_ipv6 nf_nat_ipv6 nf_defrag_ipv6 nfsv3 nfs fscache xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat libcrc32c nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bridge stp llc binfmt_misc ipmi_ssif intel_rapl sb_edac edac_core x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd intel_cstate ipmi_si mei_me ipmi_devintf
[80921.652556] dcdbas intel_rapl_perf mei shpchp lpc_ich ipmi_msghandler acpi_power_meter mac_hid nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 mlx4_en mxm_wmi mlx5_core mlx4_core tg3 ahci megaraid_sas ptp libahci devlink pps_core fjes wmi
[80921.659813] CPU: 7 PID: 5743 Comm: kworker/u82:0 Not tainted 4.10.0-19-generic #21-Ubuntu
[80921.662346] Hardware name: Dell Inc. PowerEdge R730/072T6D, BIOS 2.3.4 11/08/2016
[80921.664686] Workqueue: events_freezable_power_ disk_events_workfn
[80921.666586] task: ffff96f69a285a00 task.stack: ffffacc627394000
[80921.668437] RIP: 0010:kmem_cache_alloc+0x77/0x1a0
[80921.669902] RSP: 0018:ffffacc6273978a8 EFLAGS: 00010086
[80921.671531] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000011c41
[80921.673758] RDX: 0000000000011c40 RSI: 0000000001080020 RDI: 000000000001c5c0
[80921.675985] RBP: ffffacc6273978d8 R08: ffff96f6ff0dc5c0 R09: ffff006400000000
[80921.729078] R10: ffff96f6af006630 R11: 0000000000000000 R12: 0000000001080020
[80921.782687] R13: ffffffff957acd99 R14: ffff96eedf407980 R15: ffff96eedf407980
[80921.836867] FS: 0000000000000000(0000) GS:ffff96f6ff0c0000(0000) knlGS:0000000000000000
[80921.944601] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[80921.998508] CR2: 00007fd1e8a75a08 CR3: 0000001062c09000 CR4: 00000000003426e0
[80922.052471] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[80922.105264] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[80922.156346] Call Trace:
[80922.205695] ? kmem_cache_alloc+0xd3/0x1a0
[80922.254432] alloc_iova+0x49/0x240
[80922.301753] alloc_iova_fast+0x55/0x200
[80922.347916] intel_alloc_iova+0xac/0xe0
[80922.392736] intel_map_sg+0xc2/0x220
[80922.436095] ? lock_timer_base+0x81/0xa0
[80922.478325] ata_qc_issue+0x204/0x320