So I believe this is the sysfs test that causes the issues, the subsequent tee timer stressors just appear to be broken because the sysfs stressor got the kernel into a mangled broken state.
I was able to run the tee and timer stressors on a cleanly booted 4.4.0-137-lowlatency kernel without any issues. Running the sysfs stressor caused a load of oopses as follows: 740.873265] iounmap: bad address ffffc90004da0000 [ 740.929503] CPU: 4 PID: 1788 Comm: stress-ng-sysfs Not tainted 4.4.0-138-lowlatency #164-Ubuntu [ 740.929509] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 [ 740.929512] 0000000000000286 5dc48b8f33ce7222 ffff8800da813bc0 ffffffff8140dc61 [ 740.929536] ffff8800df1f9d80 ffffc90004da0000 ffff8800da813be0 ffffffff8106ec1f [ 740.929541] ffff8800df1f9d80 ffffc90004da0000 ffff8800da813bf0 ffffffff8106ec5c [ 740.929544] Call Trace: [ 740.929553] [<ffffffff8140dc61>] dump_stack+0x63/0x82 [ 740.929558] [<ffffffff8106ec1f>] iounmap.part.1+0x7f/0x90 [ 740.929563] [<ffffffff8106ec5c>] iounmap+0x2c/0x30 [ 740.929572] [<ffffffff814a1bb1>] acpi_os_map_cleanup.part.9+0x31/0x40 [ 740.929587] [<ffffffff8185b71e>] acpi_os_unmap_iomem+0xbe/0xf0 [ 740.929607] [<ffffffff8155614d>] read_log+0xad/0x170 [ 740.929619] [<ffffffff81555e77>] tpm_binary_bios_measurements_open+0x37/0x90 [ 740.929626] [<ffffffff8121a7d2>] do_dentry_open+0x202/0x310 [ 740.929632] [<ffffffff81555e40>] ? tpm_ascii_bios_measurements_show+0x260/0x260 [ 740.929645] [<ffffffff8121b964>] vfs_open+0x54/0x80 [ 740.929656] [<ffffffff8122771b>] ? may_open+0x5b/0xf0 [ 740.929662] [<ffffffff8122ac36>] path_openat+0x1b6/0x13a0 [ 740.929670] [<ffffffff8106e34a>] ? __do_page_fault+0x23a/0x440 [ 740.929678] [<ffffffff8119fb91>] ? free_one_page+0x191/0x340 [ 740.929686] [<ffffffff8122d9f1>] do_filp_open+0x91/0x100 [ 740.929695] [<ffffffff8123e26e>] ? mntput_no_expire+0x2e/0x1b0 [ 740.929702] [<ffffffff8123b907>] ? __alloc_fd+0xc7/0x190 [ 740.929720] [<ffffffff8121bd38>] do_sys_open+0x138/0x2b0 [ 740.929735] [<ffffffff8121bece>] SyS_open+0x1e/0x20 [ 740.929747] [<ffffffff81864e8e>] entry_SYSCALL_64_fastpath+0x22/0xc1 [ 749.735460] BUG: unable to handle kernel paging request at 0000000100000001 [ 749.818685] IP: [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 749.896706] PGD d3e68067 PUD 0 [ 749.934172] Oops: 0000 [#1] PREEMPT SMP [ 749.981003] Modules linked in: kvm_amd kvm irqbypass ipmi_devintf ipmi_ssif dcdbas input_leds joydev amd64_edac_mod 8250_fintek k10temp fam15h_power serio_raw edac_mce_amd ipmi_si i2c_piix4 acpi_power_meter edac_core ipmi_msghandler shpchp mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel hid_generic aes_x86_64 mptsas lrw mptscsih gf128mul usbhid glue_helper ablk_helper pata_acpi hid cryptd psmouse pata_atiixp mptbase ahci bnx2 libahci scsi_transport_sas [ 750.743813] CPU: 4 PID: 1791 Comm: stress-ng-sysfs Not tainted 4.4.0-138-lowlatency #164-Ubuntu [ 750.847825] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 [ 750.937282] task: ffff8800d3e45580 ti: ffff8800da824000 task.ti: ffff8800da824000 [ 751.026734] RIP: 0010:[<ffffffff811fa246>] [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 751.133881] RSP: 0018:ffff8800da827c18 EFLAGS: 00010202 [ 751.197334] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000b1af204 [ 751.282627] RDX: 000000000b1af004 RSI: 000000000b1af004 RDI: 000000000001a740 [ 751.367921] RBP: ffff8800da827c58 R08: ffff880215003b00 R09: ffffffff8129e635 [ 751.453209] R10: 000000000637760b R11: 0000000000000000 R12: 00000000024000c0 [ 751.538502] R13: 0000000100000001 R14: ffff88020fc24900 R15: ffff880215003b00 [ 751.623798] FS: 00007f8e5a1f4700(0000) GS:ffff880215700000(0000) knlGS:0000000000000000 [ 751.720535] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 751.789183] CR2: 0000000100000001 CR3: 00000000db29e000 CR4: 00000000000406f0 [ 751.874477] Stack: [ 751.898415] 0000000000000000 ffff88020fc24900 0000000000000030 0000000000000000 [ 751.986848] ffff88020f67cf00 ffff8800d94cf980 ffff88020fc24900 ffff8802124386a8 [ 752.075289] ffff8800da827c98 ffffffff8129e635 0000000000000000 ffff88020fc24900 [ 752.163722] Call Trace: [ 752.192853] [<ffffffff8129e635>] kernfs_fop_open+0x275/0x370 [ 752.261505] [<ffffffff8121a7d2>] do_dentry_open+0x202/0x310 [ 752.329117] [<ffffffff8129e3c0>] ? kernfs_fop_release+0x60/0x60 [ 752.400893] [<ffffffff8121b964>] vfs_open+0x54/0x80 [ 752.460186] [<ffffffff8122771b>] ? may_open+0x5b/0xf0 [ 752.521559] [<ffffffff8122ac36>] path_openat+0x1b6/0x13a0 [ 752.587093] [<ffffffff8106dfa3>] ? bad_area_access_error+0x43/0x50 [ 752.661986] [<ffffffff8122d9f1>] do_filp_open+0x91/0x100 [ 752.726486] [<ffffffff8123b907>] ? __alloc_fd+0xc7/0x190 [ 752.790980] [<ffffffff8121bd38>] do_sys_open+0x138/0x2b0 [ 752.855479] [<ffffffff8121bece>] SyS_open+0x1e/0x20 [ 752.914775] [<ffffffff81864e8e>] entry_SYSCALL_64_fastpath+0x22/0xc1 [ 752.991744] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 28 0f 84 48 01 00 00 4d 85 ed 0f 84 3f 01 00 00 49 63 47 20 49 8b 3f 48 8d 8a 00 02 00 00 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ab 49 [ 753.217863] RIP [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 753.296928] RSP <ffff8800da827c18> [ 753.338534] CR2: 0000000100000001 [ 753.378680] ---[ end trace 05e981119b7b5f0d ]--- [ 753.455915] BUG: unable to handle kernel paging request at 0000000100000001 [ 753.539141] IP: [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 753.617166] PGD db319067 PUD 0 [ 753.654626] Oops: 0000 [#2] PREEMPT SMP [ 753.701452] Modules linked in: kvm_amd kvm irqbypass ipmi_devintf ipmi_ssif dcdbas input_leds joydev amd64_edac_mod 8250_fintek k10temp fam15h_power serio_raw edac_mce_amd ipmi_si i2c_piix4 acpi_power_meter edac_core ipmi_msghandler shpchp mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel hid_generic aes_x86_64 mptsas lrw mptscsih gf128mul usbhid glue_helper ablk_helper pata_acpi hid cryptd psmouse pata_atiixp mptbase ahci bnx2 libahci scsi_transport_sas [ 754.464262] CPU: 4 PID: 1795 Comm: stress-ng-sysfs Tainted: G D 4.4.0-138-lowlatency #164-Ubuntu [ 754.582834] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 [ 754.672289] task: ffff880213200000 ti: ffff8800d9424000 task.ti: ffff8800d9424000 [ 754.761743] RIP: 0010:[<ffffffff811fa246>] [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 754.868889] RSP: 0018:ffff8800d9427c18 EFLAGS: 00010202 [ 754.932342] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000b1af204 [ 755.017636] RDX: 000000000b1af004 RSI: 000000000b1af004 RDI: 000000000001a740 [ 755.102929] RBP: ffff8800d9427c58 R08: ffff880215003b00 R09: ffffffff8129e635 [ 755.188224] R10: 000000000637760b R11: 0000000000000000 R12: 00000000024000c0 [ 755.273518] R13: 0000000100000001 R14: ffff8800d8b28b00 R15: ffff880215003b00 [ 755.358812] FS: 00007f8e5a1f4700(0000) GS:ffff880215700000(0000) knlGS:0000000000000000 [ 755.455545] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 755.524198] CR2: 0000000100000001 CR3: 00000000db332000 CR4: 00000000000406f0 [ 755.609493] Stack: [ 755.633423] ffffffff81a33fe0 ffff8800d8b28b00 0000000000000030 0000000000000000 [ 755.721858] ffff880213e5cf78 ffff8800d94cfa80 ffff8800d8b28b00 ffff8800d9c66ef0 [ 755.810292] ffff8800d9427c98 ffffffff8129e635 0000000000000000 ffff8800d8b28b00 [ 755.898723] Call Trace: [ 755.927858] [<ffffffff8129e635>] kernfs_fop_open+0x275/0x370 [ 755.996509] [<ffffffff8121a7d2>] do_dentry_open+0x202/0x310 [ 756.064121] [<ffffffff8129e3c0>] ? kernfs_fop_release+0x60/0x60 [ 756.135895] [<ffffffff8121b964>] vfs_open+0x54/0x80 [ 756.195187] [<ffffffff8122771b>] ? may_open+0x5b/0xf0 [ 756.256562] [<ffffffff8122ac36>] path_openat+0x1b6/0x13a0 [ 756.322096] [<ffffffff8122d9f1>] do_filp_open+0x91/0x100 [ 756.386590] [<ffffffff8123e26e>] ? mntput_no_expire+0x2e/0x1b0 [ 756.457322] [<ffffffff8123b907>] ? __alloc_fd+0xc7/0x190 [ 756.521822] [<ffffffff8121bd38>] do_sys_open+0x138/0x2b0 [ 756.586323] [<ffffffff8121bece>] SyS_open+0x1e/0x20 [ 756.645624] [<ffffffff81864e8e>] entry_SYSCALL_64_fastpath+0x22/0xc1 [ 756.722600] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 28 0f 84 48 01 00 00 4d 85 ed 0f 84 3f 01 00 00 49 63 47 20 49 8b 3f 48 8d 8a 00 02 00 00 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ab 49 [ 756.948717] RIP [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 757.027776] RSP <ffff8800d9427c18> [ 757.069383] CR2: 0000000100000001 [ 757.109008] ---[ end trace 05e981119b7b5f0e ]--- [ 757.197243] BUG: unable to handle kernel paging request at 0000000100000001 [ 757.280467] IP: [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 757.358487] PGD d3e68067 PUD 0 [ 757.395948] Oops: 0000 [#3] PREEMPT SMP [ 757.442780] Modules linked in: kvm_amd kvm irqbypass ipmi_devintf ipmi_ssif dcdbas input_leds joydev amd64_edac_mod 8250_fintek k10temp fam15h_power serio_raw edac_mce_amd ipmi_si i2c_piix4 acpi_power_meter edac_core ipmi_msghandler shpchp mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel hid_generic aes_x86_64 mptsas lrw mptscsih gf128mul usbhid glue_helper ablk_helper pata_acpi hid cryptd psmouse pata_atiixp mptbase ahci bnx2 libahci scsi_transport_sas [ 758.205616] CPU: 4 PID: 1789 Comm: stress-ng-sysfs Tainted: G D 4.4.0-138-lowlatency #164-Ubuntu [ 758.324187] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 [ 758.413642] task: ffff88020f4e0000 ti: ffff8800da860000 task.ti: ffff8800da860000 [ 758.503095] RIP: 0010:[<ffffffff811fa246>] [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 758.610237] RSP: 0018:ffff8800da863c18 EFLAGS: 00010202 [ 758.673689] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000b1af204 [ 758.758983] RDX: 000000000b1af004 RSI: 000000000b1af004 RDI: 000000000001a740 [ 758.844282] RBP: ffff8800da863c58 R08: ffff880215003b00 R09: ffffffff8129e635 [ 758.929570] R10: 000000000637760b R11: 0000000000000000 R12: 00000000024000c0 [ 759.014864] R13: 0000000100000001 R14: ffff8800d8b28c00 R15: ffff880215003b00 [ 759.100158] FS: 00007f8e5b1f6700(0000) GS:ffff880215700000(0000) knlGS:0000000000000000 [ 759.196892] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 759.265546] CR2: 0000000100000001 CR3: 00000000db29e000 CR4: 00000000000406f0 [ 759.350838] Stack: [ 759.374771] ffffffff81a33fe0 ffff8800d8b28c00 0000000000000030 0000000000000000 [ 759.463206] ffff8800df2b1ca8 ffff8800d94cfa00 ffff8800d8b28c00 ffff8800d9c2dd30 [ 759.551644] ffff8800da863c98 ffffffff8129e635 0000000000000000 ffff8800d8b28c00 [ 759.640082] Call Trace: [ 759.669219] [<ffffffff8129e635>] kernfs_fop_open+0x275/0x370 [ 759.737875] [<ffffffff8121a7d2>] do_dentry_open+0x202/0x310 [ 759.805485] [<ffffffff8129e3c0>] ? kernfs_fop_release+0x60/0x60 [ 759.877262] [<ffffffff8121b964>] vfs_open+0x54/0x80 [ 759.936552] [<ffffffff8122771b>] ? may_open+0x5b/0xf0 [ 759.997927] [<ffffffff8122ac36>] path_openat+0x1b6/0x13a0 [ 760.063462] [<ffffffff81860440>] ? __schedule+0x310/0x830 [ 760.128995] [<ffffffff81860434>] ? __schedule+0x304/0x830 [ 760.194527] [<ffffffff81860440>] ? __schedule+0x310/0x830 [ 760.260062] [<ffffffff81860434>] ? __schedule+0x304/0x830 [ 760.325595] [<ffffffff8122d9f1>] do_filp_open+0x91/0x100 [ 760.390089] [<ffffffff81860440>] ? __schedule+0x310/0x830 [ 760.455622] [<ffffffff81860434>] ? __schedule+0x304/0x830 [ 760.521164] [<ffffffff8123b907>] ? __alloc_fd+0xc7/0x190 [ 760.585662] [<ffffffff8121bd38>] do_sys_open+0x138/0x2b0 [ 760.650155] [<ffffffff81860474>] ? __schedule+0x344/0x830 [ 760.715691] [<ffffffff8121bece>] SyS_open+0x1e/0x20 [ 760.774982] [<ffffffff81864e8e>] entry_SYSCALL_64_fastpath+0x22/0xc1 [ 760.851956] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 28 0f 84 48 01 00 00 4d 85 ed 0f 84 3f 01 00 00 49 63 47 20 49 8b 3f 48 8d 8a 00 02 00 00 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ab 49 [ 761.078070] RIP [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 761.157130] RSP <ffff8800da863c18> [ 761.198737] CR2: 0000000100000001 [ 761.238362] ---[ end trace 05e981119b7b5f0f ]--- [ 761.300125] BUG: unable to handle kernel paging request at 0000000100000001 [ 761.383353] IP: [<ffffffff811f9ba1>] __kmalloc+0x91/0x270 [ 761.447852] PGD db282067 PUD 0 [ 761.485312] Oops: 0000 [#4] PREEMPT SMP [ 761.532139] Modules linked in: kvm_amd kvm irqbypass ipmi_devintf ipmi_ssif dcdbas input_leds joydev amd64_edac_mod 8250_fintek k10temp fam15h_power serio_raw edac_mce_amd ipmi_si i2c_piix4 acpi_power_meter edac_core ipmi_msghandler shpchp mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel hid_generic aes_x86_64 mptsas lrw mptscsih gf128mul usbhid glue_helper ablk_helper pata_acpi hid cryptd psmouse pata_atiixp mptbase ahci bnx2 libahci scsi_transport_sas [ 762.294968] CPU: 4 PID: 1787 Comm: stress-ng-sysfs Tainted: G D 4.4.0-138-lowlatency #164-Ubuntu [ 762.413541] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 [ 762.502994] task: ffff88020ff5d580 ti: ffff8800db37c000 task.ti: ffff8800db37c000 [ 762.592449] RIP: 0010:[<ffffffff811f9ba1>] [<ffffffff811f9ba1>] __kmalloc+0x91/0x270 [ 762.686074] RSP: 0018:ffff8800db37fba0 EFLAGS: 00010202 [ 762.749522] RAX: 0000000000000000 RBX: ffff8800d9c32f00 RCX: 000000000b1af204 [ 762.834816] RDX: 000000000b1af004 RSI: 000000000b1af004 RDI: 000000000001a740 [ 762.920109] RBP: ffff8800db37fbd8 R08: ffff880215003b00 R09: ffffffff81236802 [ 763.005403] R10: 000000000637760b R11: 8080808080808080 R12: 00000000024000c0 [ 763.090704] R13: 0000000000000033 R14: ffff880215003b00 R15: 0000000100000001 [ 763.175997] FS: 00007f8e5ddce700(0000) GS:ffff880215700000(0000) knlGS:0000000000000000 [ 763.272730] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 763.341383] CR2: 0000000100000001 CR3: 00000000db18c000 CR4: 00000000000406f0 [ 763.426677] Stack: [ 763.450609] ffff88021159103f ffffffff812366e5 ffff8800d9c32f00 ffff8800db37fd40 [ 763.539042] ffff880213df4000 ffff8800db37fc7f 0000000000000001 ffff8800db37fc00 [ 763.627477] ffffffff81236802 0000000000000001 ffff880212d53ec0 ffff8800db37fd40 [ 763.715909] Call Trace: [ 763.745041] [<ffffffff812366e5>] ? __d_alloc+0x25/0x180 [ 763.808493] [<ffffffff81236802>] __d_alloc+0x142/0x180 [ 763.870906] [<ffffffff8123685a>] d_alloc+0x1a/0x90 [ 763.929159] [<ffffffff81228373>] lookup_dcache+0x83/0xb0 [ 763.993654] [<ffffffff812283cd>] __lookup_hash+0x2d/0x60 [ 764.058147] [<ffffffff8122994c>] walk_component+0x22c/0x310 [ 764.125760] [<ffffffff81228b09>] ? path_init+0x219/0x400 [ 764.190255] [<ffffffff8122a73d>] path_lookupat+0x5d/0x110 [ 764.255787] [<ffffffff8122cdd1>] filename_lookup+0xb1/0x180 [ 764.323403] [<ffffffff8103c955>] ? copy_fpstate_to_sigframe+0xb5/0x190 [ 764.402462] [<ffffffff81096605>] ? __set_current_blocked+0x55/0x60 [ 764.477353] [<ffffffff8122c9d6>] ? getname_flags+0x56/0x1f0 [ 764.544970] [<ffffffff8122cf76>] user_path_at_empty+0x36/0x40 [ 764.614662] [<ffffffff81221c96>] vfs_fstatat+0x66/0xc0 [ 764.677076] [<ffffffff812221ee>] SYSC_newstat+0x2e/0x60 [ 764.740537] [<ffffffff81003556>] ? exit_to_usermode_loop+0xa6/0xd0 [ 764.815430] [<ffffffff8122237e>] SyS_newstat+0xe/0x10 [ 764.876805] [<ffffffff81864e8e>] entry_SYSCALL_64_fastpath+0x22/0xc1 [ 764.953780] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 38 0f 84 6b 01 00 00 4d 85 ff 0f 84 62 01 00 00 49 63 46 20 49 8b 3e 48 8d 8a 00 02 00 00 <49> 8b 1c 07 4c 89 f8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ac 49 63 [ 765.179897] RIP [<ffffffff811f9ba1>] __kmalloc+0x91/0x270 [ 765.245437] RSP <ffff8800db37fba0> [ 765.287043] CR2: 0000000100000001 [ 765.326869] ---[ end trace 05e981119b7b5f10 ]--- [ 765.383554] BUG: unable to handle kernel paging request at 0000000100000001 [ 765.466783] IP: [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 765.544805] PGD d3c7a067 PUD 0 [ 765.582269] Oops: 0000 [#5] PREEMPT SMP [ 765.629097] Modules linked in: kvm_amd kvm irqbypass ipmi_devintf ipmi_ssif dcdbas input_leds joydev amd64_edac_mod 8250_fintek k10temp fam15h_power serio_raw edac_mce_amd ipmi_si i2c_piix4 acpi_power_meter edac_core ipmi_msghandler shpchp mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel hid_generic aes_x86_64 mptsas lrw mptscsih gf128mul usbhid glue_helper ablk_helper pata_acpi hid cryptd psmouse pata_atiixp mptbase ahci bnx2 libahci scsi_transport_sas [ 766.391906] CPU: 4 PID: 1802 Comm: stress-ng-sysfs Tainted: G D 4.4.0-138-lowlatency #164-Ubuntu [ 766.510479] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 [ 766.599934] task: ffff8800d3f18e40 ti: ffff8800da8d8000 task.ti: ffff8800da8d8000 [ 766.689386] RIP: 0010:[<ffffffff811fa246>] [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 766.796528] RSP: 0018:ffff8800da8dbc18 EFLAGS: 00010202 [ 766.859980] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000b1af204 [ 766.945275] RDX: 000000000b1af004 RSI: 000000000b1af004 RDI: 000000000001a740 [ 767.030566] RBP: ffff8800da8dbc58 R08: ffff880215003b00 R09: ffffffff8129e635 [ 767.115861] R10: 0000000000000263 R11: 0000000000000000 R12: 00000000024000c0 [ 767.201155] R13: 0000000100000001 R14: ffff8800350d1800 R15: ffff880215003b00 [ 767.286450] FS: 00007f8e5a1f4700(0000) GS:ffff880215700000(0000) knlGS:0000000000000000 [ 767.383182] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 767.451828] CR2: 0000000100000001 CR3: 00000000d3f6e000 CR4: 00000000000406f0 [ 767.537116] Stack: [ 767.561050] ffffffff81a33fe0 ffff8800350d1800 0000000000000030 0000000000000000 [ 767.649482] ffff8800df3841e0 ffff8800d94cf900 ffff8800350d1800 ffff88021254df68 [ 767.737915] ffff8800da8dbc98 ffffffff8129e635 0000000000000000 ffff8800350d1800 [ 767.826347] Call Trace: [ 767.855481] [<ffffffff8129e635>] kernfs_fop_open+0x275/0x370 [ 767.924131] [<ffffffff8121a7d2>] do_dentry_open+0x202/0x310 [ 767.991746] [<ffffffff8129e3c0>] ? kernfs_fop_release+0x60/0x60 [ 768.063526] [<ffffffff8121b964>] vfs_open+0x54/0x80 [ 768.122820] [<ffffffff8122771b>] ? may_open+0x5b/0xf0 [ 768.184191] [<ffffffff8122ac36>] path_openat+0x1b6/0x13a0 [ 768.249728] [<ffffffff81860440>] ? __schedule+0x310/0x830 [ 768.315266] [<ffffffff81860434>] ? __schedule+0x304/0x830 [ 768.380799] [<ffffffff81860440>] ? __schedule+0x310/0x830 [ 768.446335] [<ffffffff81860434>] ? __schedule+0x304/0x830 [ 768.511866] [<ffffffff8122d9f1>] do_filp_open+0x91/0x100 [ 768.576362] [<ffffffff8123b907>] ? __alloc_fd+0xc7/0x190 [ 768.640860] [<ffffffff8121bd38>] do_sys_open+0x138/0x2b0 [ 768.705355] [<ffffffff8121bece>] SyS_open+0x1e/0x20 [ 768.764653] [<ffffffff81864e8e>] entry_SYSCALL_64_fastpath+0x22/0xc1 [ 768.841624] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 28 0f 84 48 01 00 00 4d 85 ed 0f 84 3f 01 00 00 49 63 47 20 49 8b 3f 48 8d 8a 00 02 00 00 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ab 49 [ 769.067736] RIP [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.146796] RSP <ffff8800da8dbc18> [ 769.188403] CR2: 0000000100000001 [ 769.228128] ---[ end trace 05e981119b7b5f11 ]--- [ 769.266088] BUG: unable to handle kernel paging request at 0000000100000001 [ 769.266094] IP: [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.266095] PGD d82d7067 PUD 0 [ 769.266097] Oops: 0000 [#6] PREEMPT SMP [ 769.266139] Modules linked in: kvm_amd kvm irqbypass ipmi_devintf ipmi_ssif dcdbas input_leds joydev amd64_edac_mod 8250_fintek k10temp fam15h_power serio_raw edac_mce_amd ipmi_si i2c_piix4 acpi_power_meter edac_core ipmi_msghandler shpchp mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel hid_generic aes_x86_64 mptsas lrw mptscsih gf128mul usbhid glue_helper ablk_helper pata_acpi hid cryptd psmouse pata_atiixp mptbase ahci bnx2 libahci scsi_transport_sas [ 769.266142] CPU: 4 PID: 1797 Comm: stress-ng-sysfs Tainted: G D 4.4.0-138-lowlatency #164-Ubuntu [ 769.266143] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 [ 769.266144] task: ffff880213253900 ti: ffff8800d94d8000 task.ti: ffff8800d94d8000 [ 769.266147] RIP: 0010:[<ffffffff811fa246>] [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.266148] RSP: 0018:ffff8800d94dbc18 EFLAGS: 00010202 [ 769.266152] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000b1af204 [ 769.266153] RDX: 000000000b1af004 RSI: 000000000b1af004 RDI: 000000000001a740 [ 769.266154] RBP: ffff8800d94dbc58 R08: ffff880215003b00 R09: ffffffff8129e635 [ 769.266157] R10: 000000000637760b R11: 0000000000000000 R12: 00000000024000c0 [ 769.266158] R13: 0000000100000001 R14: ffff8800d8b28d00 R15: ffff880215003b00 [ 769.266160] FS: 00007f8e5b1f6700(0000) GS:ffff880215700000(0000) knlGS:0000000000000000 [ 769.266163] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 769.266164] CR2: 0000000100000001 CR3: 00000000d82ec000 CR4: 00000000000406f0 [ 769.266165] Stack: [ 769.266171] ffffffff81a33fe0 ffff8800d8b28d00 0000000000000030 0000000000000000 [ 769.266188] ffff88020fbd64b0 ffff8800d94cf880 ffff8800d8b28d00 ffff8800d9c444c8 [ 769.266197] ffff8800d94dbc98 ffffffff8129e635 0000000000000000 ffff8800d8b28d00 [ 769.266199] Call Trace: [ 769.266207] [<ffffffff8129e635>] kernfs_fop_open+0x275/0x370 [ 769.266214] [<ffffffff8121a7d2>] do_dentry_open+0x202/0x310 [ 769.266219] [<ffffffff8129e3c0>] ? kernfs_fop_release+0x60/0x60 [ 769.266224] [<ffffffff8121b964>] vfs_open+0x54/0x80 [ 769.266230] [<ffffffff8122771b>] ? may_open+0x5b/0xf0 [ 769.266235] [<ffffffff8122ac36>] path_openat+0x1b6/0x13a0 [ 769.266240] [<ffffffff81860440>] ? __schedule+0x310/0x830 [ 769.266246] [<ffffffff81860434>] ? __schedule+0x304/0x830 [ 769.266252] [<ffffffff81860440>] ? __schedule+0x310/0x830 [ 769.266255] [<ffffffff81860434>] ? __schedule+0x304/0x830 [ 769.266261] [<ffffffff8122d9f1>] do_filp_open+0x91/0x100 [ 769.266267] [<ffffffff8123b907>] ? __alloc_fd+0xc7/0x190 [ 769.266273] [<ffffffff8121bd38>] do_sys_open+0x138/0x2b0 [ 769.266280] [<ffffffff8121bece>] SyS_open+0x1e/0x20 [ 769.266285] [<ffffffff81864e8e>] entry_SYSCALL_64_fastpath+0x22/0xc1 [ 769.266401] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 28 0f 84 48 01 00 00 4d 85 ed 0f 84 3f 01 00 00 49 63 47 20 49 8b 3f 48 8d 8a 00 02 00 00 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ab 49 [ 769.266405] RIP [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.266406] RSP <ffff8800d94dbc18> [ 769.266407] CR2: 0000000100000001 [ 769.266677] ---[ end trace 05e981119b7b5f12 ]--- [ 769.283380] BUG: unable to handle kernel paging request at 0000000100000001 [ 769.283392] IP: [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.283403] PGD db319067 PUD 0 [ 769.283415] Oops: 0000 [#7] PREEMPT SMP [ 769.283543] Modules linked in: kvm_amd kvm irqbypass ipmi_devintf ipmi_ssif dcdbas input_leds joydev amd64_edac_mod 8250_fintek k10temp fam15h_power serio_raw edac_mce_amd ipmi_si i2c_piix4 acpi_power_meter edac_core ipmi_msghandler shpchp mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel hid_generic aes_x86_64 mptsas lrw mptscsih gf128mul usbhid glue_helper ablk_helper pata_acpi hid cryptd psmouse pata_atiixp mptbase ahci bnx2 libahci scsi_transport_sas [ 769.283545] CPU: 4 PID: 1794 Comm: stress-ng-sysfs Tainted: G D 4.4.0-138-lowlatency #164-Ubuntu [ 769.283545] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 [ 769.283546] task: ffff880213203900 ti: ffff8800d945c000 task.ti: ffff8800d945c000 [ 769.283550] RIP: 0010:[<ffffffff811fa246>] [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.283551] RSP: 0018:ffff8800d945fc18 EFLAGS: 00010202 [ 769.283551] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000b1af204 [ 769.283552] RDX: 000000000b1af004 RSI: 000000000b1af004 RDI: 000000000001a740 [ 769.283553] RBP: ffff8800d945fc58 R08: ffff880215003b00 R09: ffffffff8129e635 [ 769.283554] R10: 0000000000000347 R11: 0000000000000000 R12: 00000000024000c0 [ 769.283555] R13: 0000000100000001 R14: ffff8800d8b28e00 R15: ffff880215003b00 [ 769.283556] FS: 00007f8e5a9f5700(0000) GS:ffff880215700000(0000) knlGS:0000000000000000 [ 769.283557] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 769.283558] CR2: 0000000100000001 CR3: 00000000db332000 CR4: 00000000000406f0 [ 769.283559] Stack: [ 769.283561] 0000000000000001 ffff8800d945fc18 0000000000000030 0000000000000000 [ 769.283562] ffff88020f548078 ffff8800d94cf700 ffff8800d8b28e00 ffff8800d9c2c058 [ 769.283564] ffff8800d945fc98 ffffffff8129e635 0000000000000000 ffff8800d8b28e00 [ 769.283564] Call Trace: [ 769.283567] [<ffffffff8129e635>] kernfs_fop_open+0x275/0x370 [ 769.283570] [<ffffffff8121a7d2>] do_dentry_open+0x202/0x310 [ 769.283572] [<ffffffff8129e3c0>] ? kernfs_fop_release+0x60/0x60 [ 769.283574] [<ffffffff8121b964>] vfs_open+0x54/0x80 [ 769.283575] [<ffffffff8122771b>] ? may_open+0x5b/0xf0 [ 769.283577] [<ffffffff8122ac36>] path_openat+0x1b6/0x13a0 [ 769.283579] [<ffffffff81860440>] ? __schedule+0x310/0x830 [ 769.283581] [<ffffffff81860434>] ? __schedule+0x304/0x830 [ 769.283583] [<ffffffff81860440>] ? __schedule+0x310/0x830 [ 769.283585] [<ffffffff81860434>] ? __schedule+0x304/0x830 [ 769.283586] [<ffffffff8122d9f1>] do_filp_open+0x91/0x100 [ 769.283588] [<ffffffff8123b907>] ? __alloc_fd+0xc7/0x190 [ 769.283591] [<ffffffff8121bd38>] do_sys_open+0x138/0x2b0 [ 769.283593] [<ffffffff8121bece>] SyS_open+0x1e/0x20 [ 769.283595] [<ffffffff81864e8e>] entry_SYSCALL_64_fastpath+0x22/0xc1 [ 769.283613] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 28 0f 84 48 01 00 00 4d 85 ed 0f 84 3f 01 00 00 49 63 47 20 49 8b 3f 48 8d 8a 00 02 00 00 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ab 49 [ 769.283615] RIP [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.283615] RSP <ffff8800d945fc18> [ 769.283616] CR2: 0000000100000001 [ 769.283618] ---[ end trace 05e981119b7b5f13 ]--- [ 769.367379] BUG: unable to handle kernel paging request at 0000000100000001 [ 769.367384] IP: [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.367389] PGD d3e68067 PUD 0 [ 769.367395] Oops: 0000 [#8] PREEMPT SMP [ 769.367506] Modules linked in: kvm_amd kvm irqbypass ipmi_devintf ipmi_ssif dcdbas input_leds joydev amd64_edac_mod 8250_fintek k10temp fam15h_power serio_raw edac_mce_amd ipmi_si i2c_piix4 acpi_power_meter edac_core ipmi_msghandler shpchp mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel hid_generic aes_x86_64 mptsas lrw mptscsih gf128mul usbhid glue_helper ablk_helper pata_acpi hid cryptd psmouse pata_atiixp mptbase ahci bnx2 libahci scsi_transport_sas [ 769.367514] CPU: 4 PID: 1788 Comm: stress-ng-sysfs Tainted: G D 4.4.0-138-lowlatency #164-Ubuntu [ 769.367517] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 [ 769.367519] task: ffff88020f4e63c0 ti: ffff8800da810000 task.ti: ffff8800da810000 [ 769.367527] RIP: 0010:[<ffffffff811fa246>] [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.367530] RSP: 0018:ffff8800da813c18 EFLAGS: 00010202 [ 769.367533] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000b1af204 [ 769.367537] RDX: 000000000b1af004 RSI: 000000000b1af004 RDI: 000000000001a740 [ 769.367538] RBP: ffff8800da813c58 R08: ffff880215003b00 R09: ffffffff8129e635 [ 769.367541] R10: 000000000637760b R11: 0000000000000000 R12: 00000000024000c0 [ 769.367544] R13: 0000000100000001 R14: ffff88020723f500 R15: ffff880215003b00 [ 769.367549] FS: 00007f8e5b9f7700(0000) GS:ffff880215700000(0000) knlGS:0000000000000000 [ 769.367552] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 769.367554] CR2: 0000000100000001 CR3: 00000000db29e000 CR4: 00000000000406f0 [ 769.367557] Stack: [ 769.367562] ffffffff81a33fe0 ffff88020723f500 0000000000000030 0000000000000000 [ 769.367568] ffff880213820438 ffff8800d94cf800 ffff88020723f500 ffff880212412380 [ 769.367573] ffff8800da813c98 ffffffff8129e635 0000000000000000 ffff88020723f500 [ 769.367576] Call Trace: [ 769.367581] [<ffffffff8129e635>] kernfs_fop_open+0x275/0x370 [ 769.367587] [<ffffffff8121a7d2>] do_dentry_open+0x202/0x310 [ 769.367592] [<ffffffff8129e3c0>] ? kernfs_fop_release+0x60/0x60 [ 769.367597] [<ffffffff8121b964>] vfs_open+0x54/0x80 [ 769.367600] [<ffffffff8122771b>] ? may_open+0x5b/0xf0 [ 769.367605] [<ffffffff8122ac36>] path_openat+0x1b6/0x13a0 [ 769.367611] [<ffffffff8122d9f1>] do_filp_open+0x91/0x100 [ 769.367616] [<ffffffff8123e26e>] ? mntput_no_expire+0x2e/0x1b0 [ 769.367622] [<ffffffff8123b907>] ? __alloc_fd+0xc7/0x190 [ 769.367627] [<ffffffff8121bd38>] do_sys_open+0x138/0x2b0 [ 769.367633] [<ffffffff8121bece>] SyS_open+0x1e/0x20 [ 769.367638] [<ffffffff81864e8e>] entry_SYSCALL_64_fastpath+0x22/0xc1 [ 769.367706] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 28 0f 84 48 01 00 00 4d 85 ed 0f 84 3f 01 00 00 49 63 47 20 49 8b 3f 48 8d 8a 00 02 00 00 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ab 49 [ 769.367711] RIP [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.367713] RSP <ffff8800da813c18> [ 769.367714] CR2: 0000000100000001 [ 769.367717] ---[ end trace 05e981119b7b5f14 ]--- [ 769.371909] BUG: unable to handle kernel paging request at 0000000100000001 [ 769.371915] IP: [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.371920] PGD d3c7a067 PUD 0 [ 769.371926] Oops: 0000 [#9] PREEMPT SMP [ 769.372007] Modules linked in: kvm_amd kvm irqbypass ipmi_devintf ipmi_ssif dcdbas input_leds joydev amd64_edac_mod 8250_fintek k10temp fam15h_power serio_raw edac_mce_amd ipmi_si i2c_piix4 acpi_power_meter edac_core ipmi_msghandler shpchp mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel hid_generic aes_x86_64 mptsas lrw mptscsih gf128mul usbhid glue_helper ablk_helper pata_acpi hid cryptd psmouse pata_atiixp mptbase ahci bnx2 libahci scsi_transport_sas [ 769.372012] CPU: 4 PID: 1800 Comm: stress-ng-sysfs Tainted: G D 4.4.0-138-lowlatency #164-Ubuntu [ 769.372015] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 [ 769.372018] task: ffff88020f658e40 ti: ffff8800daba8000 task.ti: ffff8800daba8000 [ 769.372024] RIP: 0010:[<ffffffff811fa246>] [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.372026] RSP: 0018:ffff8800dababc18 EFLAGS: 00010202 [ 769.372029] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000b1af204 [ 769.372032] RDX: 000000000b1af004 RSI: 000000000b1af004 RDI: 000000000001a740 [ 769.372034] RBP: ffff8800dababc58 R08: ffff880215003b00 R09: ffffffff8129e635 [ 769.372037] R10: 000000000637760b R11: 0000000000000000 R12: 00000000024000c0 [ 769.372040] R13: 0000000100000001 R14: ffff8800d8b29900 R15: ffff880215003b00 [ 769.372045] FS: 00007f8e5b1f6700(0000) GS:ffff880215700000(0000) knlGS:0000000000000000 [ 769.372047] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 769.372050] CR2: 0000000100000001 CR3: 00000000d3f6e000 CR4: 00000000000406f0 [ 769.372052] Stack: [ 769.372058] ffffffff81a33fe0 ffff8800d8b29900 0000000000000030 0000000000000000 [ 769.372064] ffff8800df3d5078 ffff8800d94cf780 ffff8800d8b29900 ffff88021257cda8 [ 769.372069] ffff8800dababc98 ffffffff8129e635 0000000000000000 ffff8800d8b29900 [ 769.372071] Call Trace: [ 769.372077] [<ffffffff8129e635>] kernfs_fop_open+0x275/0x370 [ 769.372083] [<ffffffff8121a7d2>] do_dentry_open+0x202/0x310 [ 769.372088] [<ffffffff8129e3c0>] ? kernfs_fop_release+0x60/0x60 [ 769.372094] [<ffffffff8121b964>] vfs_open+0x54/0x80 [ 769.372098] [<ffffffff8122771b>] ? may_open+0x5b/0xf0 [ 769.372102] [<ffffffff8122ac36>] path_openat+0x1b6/0x13a0 [ 769.372107] [<ffffffff8122d9f1>] do_filp_open+0x91/0x100 [ 769.372112] [<ffffffff8123b907>] ? __alloc_fd+0xc7/0x190 [ 769.372118] [<ffffffff8121bd38>] do_sys_open+0x138/0x2b0 [ 769.372123] [<ffffffff8121bece>] SyS_open+0x1e/0x20 [ 769.372131] [<ffffffff81864e8e>] entry_SYSCALL_64_fastpath+0x22/0xc1 [ 769.372202] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 28 0f 84 48 01 00 00 4d 85 ed 0f 84 3f 01 00 00 49 63 47 20 49 8b 3f 48 8d 8a 00 02 00 00 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ab 49 [ 769.372207] RIP [<ffffffff811fa246>] kmem_cache_alloc_trace+0x76/0x210 [ 769.372209] RSP <ffff8800dababc18> [ 769.372210] CR2: 0000000100000001 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1796250 Title: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Incomplete Bug description: This is found on a SRU testing node "gonzo", with 4.4 amd64 lowlatency kernel. This issue cannot be reproduced with the kernel 4.4.0-137 in -updates (a bit random, see comment #4) And cannot be reproduced with the AMD64 generic kernel in -proposed (4.4.0-138) as well 16:50:01 DEBUG| [stdout] timer STARTING 16:50:05 ERROR| [stderr] /home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh: line 111: 39506 Killed ./stress-ng -v -t ${DURATION} --${s} ${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE} 16:50:05 DEBUG| [stdout] timer RETURNED 137 16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed) 16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging request at 0000000100000001 16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [<ffffffff811f5ac7>] kmem_cache_alloc+0x77/0x1f0 16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0 16:50:05 DEBUG| [stdout] [ 1419.175602] Oops: 0000 [#6] SMP 16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi 16:50:05 DEBUG| [stdout] [ 1420.062172] scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid 16:50:05 DEBUG| [stdout] [ 1420.472200] CPU: 3 PID: 39506 Comm: ubuntu_stress_s Tainted: G D 4.4.0-138-generic #164-Ubuntu 16:50:05 DEBUG| [stdout] [ 1420.588693] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 16:50:05 DEBUG| [stdout] [ 1420.678138] task: ffff880177823800 ti: ffff88016a5b0000 task.ti: ffff88016a5b0000 16:50:05 DEBUG| [stdout] [ 1420.767584] RIP: 0010:[<ffffffff811f5ac7>] [<ffffffff811f5ac7>] kmem_cache_alloc+0x77/0x1f0 16:50:05 DEBUG| [stdout] [ 1420.868478] RSP: 0018:ffff88016a5b3bd0 EFLAGS: 00010202 16:50:05 DEBUG| [stdout] [ 1420.931924] RAX: 0000000000000000 RBX: 00000000024000c0 RCX: 000000000129e216 16:50:05 DEBUG| [stdout] [ 1421.017209] RDX: 000000000129e215 RSI: 00000000024000c0 RDI: 000000000001a5c0 16:50:05 DEBUG| [stdout] [ 1421.102496] RBP: ffff88016a5b3c00 R08: ffff8802156da5c0 R09: 0000000100000001 16:50:05 DEBUG| [stdout] [ 1421.187782] R10: ffff880000000ff0 R11: 0000000000000ff0 R12: 00000000024000c0 16:50:05 DEBUG| [stdout] [ 1421.273070] R13: ffffffff811d53e8 R14: ffff880215003b00 R15: ffff880215003b00 16:50:05 DEBUG| [stdout] [ 1421.358354] FS: 00007f1323076700(0000) GS:ffff8802156c0000(0000) knlGS:0000000000000000 16:50:05 DEBUG| [stdout] [ 1421.455081] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 16:50:05 DEBUG| [stdout] [ 1421.523728] CR2: 0000000100000001 CR3: 000000016f6dc000 CR4: 00000000000406f0 16:50:05 DEBUG| [stdout] [ 1421.609013] Stack: 16:50:05 DEBUG| [stdout] [ 1421.632941] 0000000000000000 ffff88019c080a28 0000000000000000 ffffc00000000fff 16:50:05 DEBUG| [stdout] [ 1421.721371] 00007fffffffefec ffff88020ff29000 ffff88016a5b3c38 ffffffff811d53e8 16:50:05 DEBUG| [stdout] [ 1421.809805] 0000000000000002 ffff88019c080a28 ffffc00000000fff 00007fffffffefec 16:50:05 DEBUG| [stdout] [ 1421.898237] Call Trace: 16:50:05 DEBUG| [stdout] [ 1421.927367] [<ffffffff811d53e8>] anon_vma_prepare+0x48/0x180 16:50:05 DEBUG| [stdout] [ 1421.996017] [<ffffffff811c8c3d>] handle_mm_fault+0x13ed/0x1b70 16:50:05 DEBUG| [stdout] [ 1422.066743] [<ffffffff812350cf>] ? atime_needs_update+0x6f/0xd0 16:50:05 DEBUG| [stdout] [ 1422.138510] [<ffffffff81235163>] ? touch_atime+0x33/0xd0 16:50:05 DEBUG| [stdout] [ 1422.202997] [<ffffffff8119781c>] ? generic_file_read_iter+0x5dc/0x6b0 16:50:05 DEBUG| [stdout] [ 1422.281009] [<ffffffff811cd5b8>] ? find_vma+0x68/0x70 16:50:05 DEBUG| [stdout] [ 1422.342374] [<ffffffff811c3176>] ? follow_page_mask+0x36/0x3a0 16:50:05 DEBUG| [stdout] [ 1422.413100] [<ffffffff811c35fe>] __get_user_pages+0x11e/0x600 16:50:05 DEBUG| [stdout] [ 1422.482788] [<ffffffff811c3ee2>] get_user_pages+0x52/0x60 16:50:05 DEBUG| [stdout] [ 1422.548314] [<ffffffff8121ea03>] copy_strings.isra.20+0x173/0x350 16:50:05 DEBUG| [stdout] [ 1422.622161] [<ffffffff8121ec14>] copy_strings_kernel+0x34/0x40 16:50:05 DEBUG| [stdout] [ 1422.692898] [<ffffffff8121f9cc>] do_execveat_common.isra.31+0x4cc/0x770 16:50:05 DEBUG| [stdout] [ 1422.772986] [<ffffffff8121feca>] SyS_execve+0x3a/0x50 16:50:05 DEBUG| [stdout] [ 1422.834353] [<ffffffff81857a25>] stub_execve+0x5/0x5 16:50:05 DEBUG| [stdout] [ 1422.894679] [<ffffffff818576ce>] ? entry_SYSCALL_64_fastpath+0x22/0xc1 16:50:05 DEBUG| [stdout] [ 1422.973724] Code: 08 65 4c 03 05 53 77 e1 7e 49 83 78 10 00 4d 8b 08 0f 84 2b 01 00 00 4d 85 c9 0f 84 22 01 00 00 49 63 47 20 48 8d 4a 01 49 8b 3f <49> 8b 1c 01 4c 89 c8 65 48 0f c7 0f 0f 94 c0 84 c0 74 bb 49 63 16:50:05 DEBUG| [stdout] [ 1423.199831] RIP [<ffffffff811f5ac7>] kmem_cache_alloc+0x77/0x1f0 16:50:05 DEBUG| [stdout] [ 1423.272646] RSP <ffff88016a5b3bd0> 16:50:05 DEBUG| [stdout] [ 1423.314250] CR2: 0000000100000001 16:50:05 DEBUG| [stdout] [ 1423.353892] ---[ end trace 7c103db725e9179b ]--- 16:50:05 DEBUG| [stdout] 16:50:05 DEBUG| [stdout] timerfd STARTING 16:50:10 DEBUG| [stdout] timerfd RETURNED 0 16:50:10 DEBUG| [stdout] timerfd FAILED (kernel oopsed) 16:50:10 DEBUG| [stdout] [ 1424.951012] BUG: unable to handle kernel paging request at 0000000100000001 16:50:10 DEBUG| [stdout] [ 1425.034231] IP: [<ffffffff811f584b>] kmem_cache_alloc_trace+0x7b/0x1f0 16:50:10 DEBUG| [stdout] [ 1425.112252] PGD 2133e0067 PUD 0 16:50:10 DEBUG| [stdout] [ 1425.150753] Oops: 0000 [#7] SMP 16:50:10 DEBUG| [stdout] [ 1425.189259] Modules linked in: unix_diag binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi 16:50:10 DEBUG| [stdout] [ 1426.037337] scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid 16:50:10 DEBUG| [stdout] [ 1426.447365] CPU: 3 PID: 1404 Comm: irqbalance Tainted: G D 4.4.0-138-generic #164-Ubuntu 16:50:10 DEBUG| [stdout] [ 1426.557614] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 04/26/2012 16:50:10 DEBUG| [stdout] [ 1426.647061] task: ffff88020f444600 ti: ffff880211c50000 task.ti: ffff880211c50000 16:50:10 DEBUG| [stdout] [ 1426.736514] RIP: 0010:[<ffffffff811f584b>] [<ffffffff811f584b>] kmem_cache_alloc_trace+0x7b/0x1f0 16:50:10 DEBUG| [stdout] [ 1426.843647] RSP: 0018:ffff880211c53c20 EFLAGS: 00010202 16:50:10 DEBUG| [stdout] [ 1426.907100] RAX: 0000000000000000 RBX: 00000000024080c0 RCX: 000000000129e216 16:50:10 DEBUG| [stdout] [ 1426.992392] RDX: 000000000129e215 RSI: 00000000024080c0 RDI: 000000000001a5c0 16:50:10 DEBUG| [stdout] [ 1427.077678] RBP: ffff880211c53c60 R08: ffff8802156da5c0 R09: ffff880215003b00 16:50:10 DEBUG| [stdout] [ 1427.162965] R10: 0000000100000001 R11: 0000000000000000 R12: 00000000024080c0 16:50:10 DEBUG| [stdout] [ 1427.248251] R13: ffffffff81285f92 R14: ffff88009b8fa700 R15: ffff880215003b00 16:50:10 DEBUG| [stdout] [ 1427.333539] FS: 00007efedee3e740(0000) GS:ffff8802156c0000(0000) knlGS:0000000000000000 16:50:10 DEBUG| [stdout] [ 1427.430270] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 16:50:10 DEBUG| [stdout] [ 1427.498916] CR2: 0000000100000001 CR3: 000000021219f000 CR4: 00000000000406f0 16:50:10 DEBUG| [stdout] [ 1427.584201] Stack: 16:50:10 DEBUG| [stdout] [ 1427.608128] ffff880211c53c40 ffff880211c53c58 0000000000000028 ffff880213963a40 16:50:10 DEBUG| [stdout] [ 1427.696560] ffff880213741fe8 0000000000000000 ffff88009b8fa700 ffff88009b8fa710 16:50:10 DEBUG| [stdout] [ 1427.784992] ffff880211c53c98 ffffffff81285f92 ffff88009b8fa700 ffff88020f81f800 16:50:10 DEBUG| [stdout] [ 1427.873425] Call Trace: 16:50:10 DEBUG| [stdout] [ 1427.902556] [<ffffffff81285f92>] proc_reg_open+0x32/0x110 16:50:10 DEBUG| [stdout] [ 1427.968086] [<ffffffff812159c2>] do_dentry_open+0x202/0x310 16:50:10 DEBUG| [stdout] [ 1428.035699] [<ffffffff81285f60>] ? proc_reg_release+0x70/0x70 16:50:10 DEBUG| [stdout] [ 1428.105391] [<ffffffff81216b54>] vfs_open+0x54/0x80 16:50:10 DEBUG| [stdout] [ 1428.164686] [<ffffffff812228ab>] ? may_open+0x5b/0xf0 16:50:10 DEBUG| [stdout] [ 1428.226058] [<ffffffff81226b6c>] path_openat+0x59c/0x1340 16:50:10 DEBUG| [stdout] [ 1428.291592] [<ffffffff81852ffd>] ? __schedule+0x30d/0x7f0 16:50:10 DEBUG| [stdout] [ 1428.357122] [<ffffffff81852ff1>] ? __schedule+0x301/0x7f0 16:50:10 DEBUG| [stdout] [ 1428.422648] [<ffffffff81228b01>] do_filp_open+0x91/0x100 16:50:10 DEBUG| [stdout] 16:50:10 DEBUG| [stdout] tlb-shootdown STARTING ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-138-lowlatency 4.4.0-138.164 ProcVersionSignature: User Name 4.4.0-138.164-lowlatency 4.4.155 Uname: Linux 4.4.0-138-lowlatency x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Oct 5 07:58 seq crw-rw---- 1 root audio 116, 33 Oct 5 07:58 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: N/A CurrentDmesg: Date: Fri Oct 5 07:59:12 2018 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. PowerEdge R310 PciMultimedia: ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-138-lowlatency root=UUID=7b91a2b8-2e02-407e-a51d-766f6d969020 ro console=ttyS0,1152008n1 RelatedPackageVersions: linux-restricted-modules-4.4.0-138-lowlatency N/A linux-backports-modules-4.4.0-138-lowlatency N/A linux-firmware 1.157.20 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/17/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.8.2 dmi.board.name: 05XKKK dmi.board.vendor: Dell Inc. dmi.board.version: A05 dmi.chassis.type: 23 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.8.2:bd08/17/2011:svnDellInc.:pnPowerEdgeR310:pvr:rvnDellInc.:rn05XKKK:rvrA05:cvnDellInc.:ct23:cvr: dmi.product.name: PowerEdge R310 dmi.sys.vendor: Dell Inc. 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