[    0.000000] Linux version 4.18.0-80.4.2.el7.lus.x86_64 (root@lmo-tyan1) (gcc version 8.2.1 20180905 (Red Hat 8.2.1-3) (GCC)) #1 SMP Wed Jun 26 09:16:21 MDT 2019
[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-4.18.0-80.4.2.el7.lus.x86_64 root=UUID=33f6695f-d26e-4ff2-b4a8-fa4c1abb464a ro crashkernel=auto rhgb quiet LANG=en_US.UTF-8 iommu=pt md.nr_requests=256 md_mod.nr_requests=256
[    0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[    0.000000] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[    0.000000] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'compacted' format.
...
[20717.725265] Lustre: Echo OBD driver; http://www.lustre.org/
[20960.214377] perf: interrupt took too long (2501 > 2500), lowering kernel.perf_event_max_sample_rate to 79000
[20960.230701] perf: interrupt took too long (3127 > 3126), lowering kernel.perf_event_max_sample_rate to 63000
[20964.294183] WARNING: can't dereference registers at 00000000f6f2fd3a for ip interrupt_entry+0xe5/0x100
[22202.829417] LustreError: 17527:0:(class_obd.c:474:class_handle_ioctl()) OBD ioctl: device not setup 6 
[22202.829620] LustreError: 17969:0:(echo_client.c:1041:echo_device_free()) echo_client still has objects at cleanup time, wait for 1 second
[22202.829763] LustreError: 16850:0:(class_obd.c:468:class_handle_ioctl()) OBD ioctl : No Device 6
[22202.829809] LustreError: 16850:0:(class_obd.c:468:class_handle_ioctl()) Skipped 2 previous similar messages
[22256.232227] WARNING: stack recursion on stack type 4
[22316.594988] LustreError: 4105:0:(class_obd.c:474:class_handle_ioctl()) OBD ioctl: device not setup 6 
[22316.595086] LustreError: 3613:0:(class_obd.c:468:class_handle_ioctl()) OBD ioctl : No Device 6
[22316.595119] LustreError: 3613:0:(class_obd.c:468:class_handle_ioctl()) Skipped 1019 previous similar messages
[22316.595174] LustreError: 4923:0:(echo_client.c:1041:echo_device_free()) echo_client still has objects at cleanup time, wait for 1 second
[23901.382153] general protection fault: 0000 [#1] SMP NOPTI
[23901.382184] CPU: 4 PID: 3423 Comm: lctl Kdump: loaded Tainted: P           OE    --------- -  - 4.18.0-80.4.2.el7.lus.x86_64 #1
[23901.382219] Hardware name: TYAN B8026T70AV2E24HR/S8026GM2NRE, BIOS V1.04.B10 11/15/2018
[23901.382248] RIP: 0010:memcmp+0x5/0x40
[23901.382263] Code: 17 48 8d 04 17 eb 07 0f b6 0f 39 f1 74 0a 48 83 c7 01 48 39 f8 75 f0 c3 48 89 f8 c3 66 0f 1f 84 00 00 00 00 00 48 85 d2 74 2e <0f> b6 07 0f b6 0e 29 c8 75 23 b9 01 00 00 00 eb 13 44 0f b6 04 0f
[23901.382319] RSP: 0018:ffffb683e2c7bd08 EFLAGS: 00010202
[23901.382336] RAX: 00000000ffffff80 RBX: ffff9b60ef670000 RCX: 0000000000000080
[23901.382359] RDX: 0000000000000008 RSI: ffffb683e2c7bd10 RDI: 5a5a5a5a5a5a5a52
[23901.382380] RBP: fffffffffffffff8 R08: 0000000000000001 R09: 0000000000000000
[23901.382402] R10: ffff9b5f1e0a3200 R11: 0000000000ffff01 R12: 0000000000000008
[23901.382424] R13: 5a5a5a5a5a5a5a5a R14: 0000000000000008 R15: 0000000000000000
[23901.382447] FS:  00007feaac5e5740(0000) GS:ffff9b623e900000(0000) knlGS:0000000000000000
[23901.383391] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[23901.384282] CR2: 00007fa11c5645b0 CR3: 0000003bf1bb4000 CR4: 00000000003406e0
[23901.385176] Call Trace:
[23901.386099]  lu_env_remove+0x131/0x390 [obdclass]
[23901.386986]  echo_client_iocontrol+0x4ca/0x15e0 [obdecho]
[23901.387860]  ? __kmalloc+0x1dc/0x220
[23901.388743]  ? lprocfs_counter_add+0xd2/0x140 [obdclass]
[23901.389623]  class_handle_ioctl+0x191d/0x1dc0 [obdclass]
[23901.390470]  ? __switch_to_asm+0x34/0x70
[23901.391304]  ? __switch_to_asm+0x40/0x70
[23901.392115]  ? __switch_to_asm+0x34/0x70
[23901.392908]  ? __switch_to_asm+0x40/0x70
[23901.393679]  ? __switch_to_asm+0x34/0x70
[23901.394468]  obd_class_ioctl+0xbb/0x140 [obdclass]
[23901.395230]  do_vfs_ioctl+0xa4/0x630
[23901.395982]  ? syscall_trace_enter+0x1d3/0x2c0
[23901.396726]  ksys_ioctl+0x60/0x90
[23901.397455]  __x64_sys_ioctl+0x16/0x20
[23901.398168]  do_syscall_64+0x5b/0x1b0
[23901.398872]  entry_SYSCALL_64_after_hwframe+0x65/0xca
[23901.399573] RIP: 0033:0x7feaab8955d7
[23901.400264] Code: 44 00 00 48 8b 05 b9 08 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 89 08 2d 00 f7 d8 64 89 01 48
[23901.401691] RSP: 002b:00007fff5ff3a5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[23901.402402] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007feaab8955d7
[23901.403104] RDX: 00007fff5ff3a910 RSI: 00000000c008667e RDI: 0000000000000003
[23901.403787] RBP: 0000000000000400 R08: 0000000000000000 R09: 0000000000000000
[23901.404455] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000336
[23901.405115] R13: 0000000000000335 R14: 0000000000000335 R15: 0000000000000000
[23901.405758] Modules linked in: obdecho(OE) osp(OE) ofd(OE) lfsck(OE) ost(OE) mgc(OE) lustre(OE) lmv(OE) mdc(OE) osc(OE) lov(OE) osd_ldiskfs(OE) ldiskfs(OE) lquota(OE) fid(OE) fld(OE) ko2iblnd(OE) ptlrpc(OE) obdclass(OE) lnet(OE) libcfs(OE) mlx4_ib(OE) mlx4_en(OE) mlx4_core(OE) ib_isert(OE) iscsi_target_mod(E) target_core_mod(E) sunrpc(E) ib_srpt(OE) ib_srp(OE) scsi_transport_srp(OE) ib_ucm(OE) dm_mirror(E) dm_region_hash(E) dm_log(E) dm_mod(E) vfat(E) fat(E) raid0(E) zfs(POE) zunicode(POE) zlua(POE) rpcrdma(OE) svcrdma(OE) xprtrdma(OE) amd64_edac_mod(E) edac_mce_amd(E) rdma_ucm(OE) ib_iser(OE) ib_umad(OE) kvm(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) rdma_cm(OE) ib_ipoib(OE) iw_cm(OE) pcspkr(E) libiscsi(E) sg(E) scsi_transport_iscsi(E) ib_cm(OE) zcommon(POE) znvpair(POE)
[23901.410683]  zavl(POE) icp(POE) spl(OE) k10temp(E) ccp(E) ipmi_si(E) ipmi_devintf(E) ipmi_msghandler(E) pinctrl_amd(E) sp5100_tco(E) acpi_cpufreq(E) i2c_piix4(E) binfmt_misc(E) knem(OE) ip_tables(E) ext4(E) mbcache(E) jbd2(E) mlx5_ib(OE) sd_mod(E) ib_uverbs(OE) ib_core(OE) uas(E) usb_storage(E) ast(E) i2c_algo_bit(E) drm_kms_helper(E) syscopyarea(E) sysfillrect(E) sysimgblt(E) fb_sys_fops(E) ttm(E) drm(E) ahci(E) libahci(E) libata(E) crc32c_intel(E) tg3(E) mlx5_core(OE) mlxfw(E) devlink(E) nvme(OE) nvme_core(OE) mlx_compat(OE)