That one hung much like the others, with the system responding only to very basic commands (mostly bash internals), although the dmesg output continued further after the kernel bug message. Here's the dmesg output:
[ 107.652875] EDAC MC0: Giving out device to module sb_edac.c controller Haswell SrcID#1_Ha#0: DEV 0000:ff:12.0 (INTERRUPT) [ 107.652995] EDAC MC1: Giving out device to module sb_edac.c controller Haswell SrcID#0_Ha#0: DEV 0000:7f:12.0 (INTERRUPT) [ 107.653010] EDAC sbridge: Some needed devices are missing [ 107.675559] EDAC MC: Removed device 0 for sb_edac.c Haswell SrcID#1_Ha#0: DEV 0000:ff:12.0 [ 107.703606] EDAC MC: Removed device 1 for sb_edac.c Haswell SrcID#0_Ha#0: DEV 0000:7f:12.0 [ 107.703639] EDAC sbridge: Couldn't find mci handler [ 107.704195] EDAC sbridge: Couldn't find mci handler [ 107.704618] EDAC sbridge: Failed to register device with error -19. [ 108.163612] smpboot: Booting Node 1 Processor 8 APIC 0x10 [ 108.189804] intel_rapl: Found RAPL domain package [ 108.189810] intel_rapl: Found RAPL domain dram [ 108.189812] intel_rapl: DRAM domain energy unit 15300pj [ 108.190389] ------------[ cut here ]------------ [ 108.190390] kernel BUG at /home/jsalisbury/bugs/lp1733662/ubuntu-artful/mm/slub.c:3878! [ 108.191016] invalid opcode: 0000 [#1] SMP [ 108.191511] Modules linked in: nls_iso8859_1 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp ipmi_ssif kvm_intel kvm input_leds irqbypass joydev mei_me intel_cstate ipmi_si intel_rapl_perf shpchp acpi_power_meter ipmi_devintf ipmi_msghandler mei lpc_ich mac_hid acpi_pad ib_iser rdma_cm iw_cm ib_cm ib_core 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 ses enclosure scsi_transport_sas crct10dif_pclmul crc32_pclmul mgag200 ghash_clmulni_intel ttm pcbc fnic hid_generic drm_kms_helper igb syscopyarea aesni_intel usbhid dca sysfillrect i2c_algo_bit sysimgblt aes_x86_64 ptp fb_sys_fops crypto_simd mxm_wmi hid libfcoe glue_helper ahci cryptd libfc drm [ 108.195174] libahci pps_core enic scsi_transport_fc megaraid_sas wmi [ 108.195756] CPU: 8 PID: 302 Comm: kworker/8:3 Not tainted 4.13.0-13-generic #14~lp1733662Commit97327adfdaf5d [ 108.196353] Hardware name: Cisco Systems Inc UCSC-C240-M4L/UCSC-C240-M4L, BIOS C240M4.2.0.10c.0.032320160820 03/23/2016 [ 108.196971] Workqueue: events cpuset_hotplug_workfn [ 108.197583] task: ffff8e3432fcae80 task.stack: ffffb5fb4e104000 [ 108.198236] RIP: 0010:kfree+0x11c/0x160 [ 108.198861] RSP: 0000:ffffb5fb4e107cc8 EFLAGS: 00010246 [ 108.199485] RAX: fffffb0ffeff0020 RBX: ffff8e3400000000 RCX: 000000018020001d [ 108.200121] RDX: 0000000000000000 RSI: fffffb0fffd33600 RDI: 0000720b40000000 [ 108.200764] RBP: ffffb5fb4e107ce0 R08: ffff8e3434cd8c00 R09: 000000018020001d [ 108.201405] R10: fffffb0fff000000 R11: 0000000000000000 R12: ffff8e343254f058 [ 108.202053] R13: ffffffff876ce3d3 R14: ffff8e34382b6d10 R15: 0000000000000000 [ 108.202703] FS: 0000000000000000(0000) GS:ffff8e343f200000(0000) knlGS:0000000000000000 [ 108.203367] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 108.204031] CR2: 0000000000000000 CR3: 00000026c7609000 CR4: 00000000001406e0 [ 108.204702] Call Trace: [ 108.205377] sd_free_ctl_entry+0x63/0x70 [ 108.206054] sd_free_ctl_entry+0x53/0x70 [ 108.206727] unregister_sched_domain_sysctl+0x36/0x40 [ 108.207396] partition_sched_domains+0x34/0x2f0 [ 108.208070] rebuild_sched_domains_locked+0x5a/0x80 [ 108.208771] rebuild_sched_domains+0x1a/0x30 [ 108.209442] cpuset_hotplug_workfn+0x1b1/0xd30 [ 108.210119] ? mutex_lock+0x12/0x40 [ 108.210790] process_one_work+0x1e7/0x410 [ 108.211470] worker_thread+0x4a/0x410 [ 108.212146] kthread+0x125/0x140 [ 108.212814] ? process_one_work+0x410/0x410 [ 108.213482] ? kthread_create_on_node+0x70/0x70 [ 108.214159] ret_from_fork+0x25/0x30 [ 108.214830] Code: 08 49 83 c4 18 48 89 da 4c 89 ee ff d0 49 8b 04 24 48 85 c0 75 e6 e9 0e ff ff ff 49 8b 02 f6 c4 80 75 0a 49 8b 42 20 a8 01 75 02 <0f> 0b 49 8b 02 31 f6 f6 c4 80 74 04 41 8b 72 6c 4c 89 d7 e8 2c [ 108.216269] RIP: kfree+0x11c/0x160 RSP: ffffb5fb4e107cc8 [ 108.217042] ---[ end trace 8c27258fb7e406c8 ]--- [ 108.225116] EDAC sbridge: Seeking for: PCI ID 8086:2fa0 [ 108.225880] EDAC sbridge: Seeking for: PCI ID 8086:2fa0 [ 108.226442] EDAC sbridge: Seeking for: PCI ID 8086:2fa0 [ 108.227006] EDAC sbridge: Seeking for: PCI ID 8086:2f60 [ 108.227623] EDAC sbridge: Seeking for: PCI ID 8086:2fa8 [ 108.228288] EDAC sbridge: Seeking for: PCI ID 8086:2fa8 [ 108.228809] EDAC sbridge: Seeking for: PCI ID 8086:2fa8 [ 108.229313] EDAC sbridge: Seeking for: PCI ID 8086:2f71 [ 108.229794] EDAC sbridge: Seeking for: PCI ID 8086:2f71 [ 108.230253] EDAC sbridge: Seeking for: PCI ID 8086:2f71 [ 108.230692] EDAC sbridge: Seeking for: PCI ID 8086:2faa [ 108.231110] EDAC sbridge: Seeking for: PCI ID 8086:2faa [ 108.231552] EDAC sbridge: Seeking for: PCI ID 8086:2faa [ 108.232040] EDAC sbridge: Seeking for: PCI ID 8086:2fab [ 108.232421] EDAC sbridge: Seeking for: PCI ID 8086:2fab [ 108.232770] EDAC sbridge: Seeking for: PCI ID 8086:2fab [ 108.233103] EDAC sbridge: Seeking for: PCI ID 8086:2fac [ 108.233415] EDAC sbridge: Seeking for: PCI ID 8086:2fac [ 108.233723] EDAC sbridge: Seeking for: PCI ID 8086:2fac [ 108.234021] EDAC sbridge: Seeking for: PCI ID 8086:2fad [ 108.234314] EDAC sbridge: Seeking for: PCI ID 8086:2fad [ 108.234597] EDAC sbridge: Seeking for: PCI ID 8086:2fad [ 108.234872] EDAC sbridge: Seeking for: PCI ID 8086:2f68 [ 108.235140] EDAC sbridge: Seeking for: PCI ID 8086:2f68 [ 108.235397] EDAC sbridge: Seeking for: PCI ID 8086:2f68 [ 108.235697] EDAC sbridge: Seeking for: PCI ID 8086:2f79 [ 108.236003] EDAC sbridge: Seeking for: PCI ID 8086:2f6a [ 108.236293] EDAC sbridge: Seeking for: PCI ID 8086:2f6b [ 108.236529] EDAC sbridge: Seeking for: PCI ID 8086:2f6c [ 108.236752] EDAC sbridge: Seeking for: PCI ID 8086:2f6d [ 108.236971] EDAC sbridge: Seeking for: PCI ID 8086:2ffc [ 108.237183] EDAC sbridge: Seeking for: PCI ID 8086:2ffc [ 108.237390] EDAC sbridge: Seeking for: PCI ID 8086:2ffc [ 108.237589] EDAC sbridge: Seeking for: PCI ID 8086:2ffd [ 108.237798] EDAC sbridge: Seeking for: PCI ID 8086:2ffd [ 108.237987] EDAC sbridge: Seeking for: PCI ID 8086:2ffd [ 108.238172] EDAC sbridge: Seeking for: PCI ID 8086:2fbd [ 108.238349] EDAC sbridge: Seeking for: PCI ID 8086:2fbd [ 108.238520] EDAC sbridge: Seeking for: PCI ID 8086:2fbd [ 108.238689] EDAC sbridge: Seeking for: PCI ID 8086:2fbf [ 108.238852] EDAC sbridge: Seeking for: PCI ID 8086:2fbf [ 108.239011] EDAC sbridge: Seeking for: PCI ID 8086:2fbf [ 108.239164] EDAC sbridge: Seeking for: PCI ID 8086:2fb9 [ 108.239309] EDAC sbridge: Seeking for: PCI ID 8086:2fb9 [ 108.239439] EDAC sbridge: Seeking for: PCI ID 8086:2fb9 [ 108.239583] EDAC sbridge: Seeking for: PCI ID 8086:2fbb [ 108.239690] EDAC sbridge: Seeking for: PCI ID 8086:2fbb [ 108.239799] EDAC sbridge: Seeking for: PCI ID 8086:2fbb [ 108.239998] EDAC MC0: Giving out device to module sb_edac.c controller Haswell SrcID#1_Ha#0: DEV 0000:ff:12.0 (INTERRUPT) [ 108.240338] EDAC MC1: Giving out device to module sb_edac.c controller Haswell SrcID#0_Ha#0: DEV 0000:7f:12.0 (INTERRUPT) [ 108.240473] EDAC sbridge: Some needed devices are missing [ 108.267599] EDAC MC: Removed device 0 for sb_edac.c Haswell SrcID#1_Ha#0: DEV 0000:ff:12.0 [ 108.303631] EDAC MC: Removed device 1 for sb_edac.c Haswell SrcID#0_Ha#0: DEV 0000:7f:12.0 [ 108.304152] EDAC sbridge: Couldn't find mci handler [ 108.304369] EDAC sbridge: Couldn't find mci handler [ 108.304577] EDAC sbridge: Failed to register device with error -19.
That one hung much like the others, with the system responding only to very basic commands (mostly bash internals), although the dmesg output continued further after the kernel bug message. Here's the dmesg output:
[ 107.652875] EDAC MC0: Giving out device to module sb_edac.c controller Haswell SrcID#1_Ha#0: DEV 0000:ff:12.0 (INTERRUPT) y/bugs/ lp1733662/ ubuntu- artful/ mm/slub. c:3878! temp_thermal intel_powerclamp coretemp ipmi_ssif kvm_intel kvm input_leds irqbypass joydev mei_me intel_cstate ipmi_si intel_rapl_perf shpchp acpi_power_meter ipmi_devintf ipmi_msghandler mei lpc_ich mac_hid acpi_pad ib_iser rdma_cm iw_cm ib_cm ib_core 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 ses enclosure scsi_transport_sas crct10dif_pclmul crc32_pclmul mgag200 ghash_clmulni_intel ttm pcbc fnic hid_generic drm_kms_helper igb syscopyarea aesni_intel usbhid dca sysfillrect i2c_algo_bit sysimgblt aes_x86_64 ptp fb_sys_fops crypto_simd mxm_wmi hid libfcoe glue_helper ahci cryptd libfc drm mmit97327adfdaf 5d M4L/UCSC- C240-M4L, BIOS C240M4. 2.0.10c. 0.032320160820 03/23/2016 hotplug_ workfn 0x11c/0x160 107cc8 EFLAGS: 00010246 0(0000) GS:ffff8e343f20 0000(0000) knlGS:000000000 0000000 ctl_entry+ 0x63/0x70 ctl_entry+ 0x53/0x70 sched_domain_ sysctl+ 0x36/0x40 sched_domains+ 0x34/0x2f0 sched_domains_ locked+ 0x5a/0x80 sched_domains+ 0x1a/0x30 hotplug_ workfn+ 0x1b1/0xd30 0x12/0x40 one_work+ 0x1e7/0x410 thread+ 0x4a/0x410 one_work+ 0x410/0x410 create_ on_node+ 0x70/0x70 fork+0x25/ 0x30
[ 107.652995] EDAC MC1: Giving out device to module sb_edac.c controller Haswell SrcID#0_Ha#0: DEV 0000:7f:12.0 (INTERRUPT)
[ 107.653010] EDAC sbridge: Some needed devices are missing
[ 107.675559] EDAC MC: Removed device 0 for sb_edac.c Haswell SrcID#1_Ha#0: DEV 0000:ff:12.0
[ 107.703606] EDAC MC: Removed device 1 for sb_edac.c Haswell SrcID#0_Ha#0: DEV 0000:7f:12.0
[ 107.703639] EDAC sbridge: Couldn't find mci handler
[ 107.704195] EDAC sbridge: Couldn't find mci handler
[ 107.704618] EDAC sbridge: Failed to register device with error -19.
[ 108.163612] smpboot: Booting Node 1 Processor 8 APIC 0x10
[ 108.189804] intel_rapl: Found RAPL domain package
[ 108.189810] intel_rapl: Found RAPL domain dram
[ 108.189812] intel_rapl: DRAM domain energy unit 15300pj
[ 108.190389] ------------[ cut here ]------------
[ 108.190390] kernel BUG at /home/jsalisbur
[ 108.191016] invalid opcode: 0000 [#1] SMP
[ 108.191511] Modules linked in: nls_iso8859_1 intel_rapl x86_pkg_
[ 108.195174] libahci pps_core enic scsi_transport_fc megaraid_sas wmi
[ 108.195756] CPU: 8 PID: 302 Comm: kworker/8:3 Not tainted 4.13.0-13-generic #14~lp1733662Co
[ 108.196353] Hardware name: Cisco Systems Inc UCSC-C240-
[ 108.196971] Workqueue: events cpuset_
[ 108.197583] task: ffff8e3432fcae80 task.stack: ffffb5fb4e104000
[ 108.198236] RIP: 0010:kfree+
[ 108.198861] RSP: 0000:ffffb5fb4e
[ 108.199485] RAX: fffffb0ffeff0020 RBX: ffff8e3400000000 RCX: 000000018020001d
[ 108.200121] RDX: 0000000000000000 RSI: fffffb0fffd33600 RDI: 0000720b40000000
[ 108.200764] RBP: ffffb5fb4e107ce0 R08: ffff8e3434cd8c00 R09: 000000018020001d
[ 108.201405] R10: fffffb0fff000000 R11: 0000000000000000 R12: ffff8e343254f058
[ 108.202053] R13: ffffffff876ce3d3 R14: ffff8e34382b6d10 R15: 0000000000000000
[ 108.202703] FS: 000000000000000
[ 108.203367] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 108.204031] CR2: 0000000000000000 CR3: 00000026c7609000 CR4: 00000000001406e0
[ 108.204702] Call Trace:
[ 108.205377] sd_free_
[ 108.206054] sd_free_
[ 108.206727] unregister_
[ 108.207396] partition_
[ 108.208070] rebuild_
[ 108.208771] rebuild_
[ 108.209442] cpuset_
[ 108.210119] ? mutex_lock+
[ 108.210790] process_
[ 108.211470] worker_
[ 108.212146] kthread+0x125/0x140
[ 108.212814] ? process_
[ 108.213482] ? kthread_
[ 108.214159] ret_from_
[ 108.214830] Code: 08 49 83 c4 18 48 89 da 4c 89 ee ff d0 49 8b 04 24 48 85 c0 75 e6 e9 0e ff ff ff 49 8b 02 f6 c4 80 75 0a 49 8b 42 20 a8 01 75 02 <0f> 0b 49 8b 02 31 f6 f6 c4 80 74 04 41 8b 72 6c 4c 89 d7 e8 2c
[ 108.216269] RIP: kfree+0x11c/0x160 RSP: ffffb5fb4e107cc8
[ 108.217042] ---[ end trace 8c27258fb7e406c8 ]---
[ 108.225116] EDAC sbridge: Seeking for: PCI ID 8086:2fa0
[ 108.225880] EDAC sbridge: Seeking for: PCI ID 8086:2fa0
[ 108.226442] EDAC sbridge: Seeking for: PCI ID 8086:2fa0
[ 108.227006] EDAC sbridge: Seeking for: PCI ID 8086:2f60
[ 108.227623] EDAC sbridge: Seeking for: PCI ID 8086:2fa8
[ 108.228288] EDAC sbridge: Seeking for: PCI ID 8086:2fa8
[ 108.228809] EDAC sbridge: Seeking for: PCI ID 8086:2fa8
[ 108.229313] EDAC sbridge: Seeking for: PCI ID 8086:2f71
[ 108.229794] EDAC sbridge: Seeking for: PCI ID 8086:2f71
[ 108.230253] EDAC sbridge: Seeking for: PCI ID 8086:2f71
[ 108.230692] EDAC sbridge: Seeking for: PCI ID 8086:2faa
[ 108.231110] EDAC sbridge: Seeking for: PCI ID 8086:2faa
[ 108.231552] EDAC sbridge: Seeking for: PCI ID 8086:2faa
[ 108.232040] EDAC sbridge: Seeking for: PCI ID 8086:2fab
[ 108.232421] EDAC sbridge: Seeking for: PCI ID 8086:2fab
[ 108.232770] EDAC sbridge: Seeking for: PCI ID 8086:2fab
[ 108.233103] EDAC sbridge: Seeking for: PCI ID 8086:2fac
[ 108.233415] EDAC sbridge: Seeking for: PCI ID 8086:2fac
[ 108.233723] EDAC sbridge: Seeking for: PCI ID 8086:2fac
[ 108.234021] EDAC sbridge: Seeking for: PCI ID 8086:2fad
[ 108.234314] EDAC sbridge: Seeking for: PCI ID 8086:2fad
[ 108.234597] EDAC sbridge: Seeking for: PCI ID 8086:2fad
[ 108.234872] EDAC sbridge: Seeking for: PCI ID 8086:2f68
[ 108.235140] EDAC sbridge: Seeking for: PCI ID 8086:2f68
[ 108.235397] EDAC sbridge: Seeking for: PCI ID 8086:2f68
[ 108.235697] EDAC sbridge: Seeking for: PCI ID 8086:2f79
[ 108.236003] EDAC sbridge: Seeking for: PCI ID 8086:2f6a
[ 108.236293] EDAC sbridge: Seeking for: PCI ID 8086:2f6b
[ 108.236529] EDAC sbridge: Seeking for: PCI ID 8086:2f6c
[ 108.236752] EDAC sbridge: Seeking for: PCI ID 8086:2f6d
[ 108.236971] EDAC sbridge: Seeking for: PCI ID 8086:2ffc
[ 108.237183] EDAC sbridge: Seeking for: PCI ID 8086:2ffc
[ 108.237390] EDAC sbridge: Seeking for: PCI ID 8086:2ffc
[ 108.237589] EDAC sbridge: Seeking for: PCI ID 8086:2ffd
[ 108.237798] EDAC sbridge: Seeking for: PCI ID 8086:2ffd
[ 108.237987] EDAC sbridge: Seeking for: PCI ID 8086:2ffd
[ 108.238172] EDAC sbridge: Seeking for: PCI ID 8086:2fbd
[ 108.238349] EDAC sbridge: Seeking for: PCI ID 8086:2fbd
[ 108.238520] EDAC sbridge: Seeking for: PCI ID 8086:2fbd
[ 108.238689] EDAC sbridge: Seeking for: PCI ID 8086:2fbf
[ 108.238852] EDAC sbridge: Seeking for: PCI ID 8086:2fbf
[ 108.239011] EDAC sbridge: Seeking for: PCI ID 8086:2fbf
[ 108.239164] EDAC sbridge: Seeking for: PCI ID 8086:2fb9
[ 108.239309] EDAC sbridge: Seeking for: PCI ID 8086:2fb9
[ 108.239439] EDAC sbridge: Seeking for: PCI ID 8086:2fb9
[ 108.239583] EDAC sbridge: Seeking for: PCI ID 8086:2fbb
[ 108.239690] EDAC sbridge: Seeking for: PCI ID 8086:2fbb
[ 108.239799] EDAC sbridge: Seeking for: PCI ID 8086:2fbb
[ 108.239998] EDAC MC0: Giving out device to module sb_edac.c controller Haswell SrcID#1_Ha#0: DEV 0000:ff:12.0 (INTERRUPT)
[ 108.240338] EDAC MC1: Giving out device to module sb_edac.c controller Haswell SrcID#0_Ha#0: DEV 0000:7f:12.0 (INTERRUPT)
[ 108.240473] EDAC sbridge: Some needed devices are missing
[ 108.267599] EDAC MC: Removed device 0 for sb_edac.c Haswell SrcID#1_Ha#0: DEV 0000:ff:12.0
[ 108.303631] EDAC MC: Removed device 1 for sb_edac.c Haswell SrcID#0_Ha#0: DEV 0000:7f:12.0
[ 108.304152] EDAC sbridge: Couldn't find mci handler
[ 108.304369] EDAC sbridge: Couldn't find mci handler
[ 108.304577] EDAC sbridge: Failed to register device with error -19.