Public bug reported: Overnight, one of my machines locked up hard, and when I got it rebooted and examined the logs, I found this as the last syslog entry before the reboot:
Apr 27 01:51:59 cerberus kernel: [135061.355394] BUG: unable to handle kernel paging request at 1000 0010 Apr 27 01:51:59 cerberus kernel: [135061.356008] IP: [<c115bf51>] find_get_entry+0x31/0xa0 Apr 27 01:51:59 cerberus kernel: [135061.356008] *pdpt = 0000000033d16001 *pde = 0000000000000000 Apr 27 01:51:59 cerberus kernel: [135061.356008] Oops: 0000 [#1] SMP Apr 27 01:51:59 cerberus kernel: [135061.356008] Modules linked in: xt_nat xt_tcpudp ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_conntrack iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 iptable _filter ip_tables x_tables nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack 8021q garp mrp bridge stp llc arc4 ath5k ath mac80211 cfg80211 ppdev serio_raw matrox_w1 wire lpc_ich 8250_fintek parport_pc mac_hid shpchp lp parport 8139too 8139cp e100 pata_acpi mii fjes Apr 27 01:51:59 cerberus kernel: [135061.356008] CPU: 0 PID: 7080 Comm: bzip2 Not tainted 4.4.0-21-g eneric #37~14.04.1-Ubuntu Apr 27 01:51:59 cerberus kernel: [135061.356008] Hardware name: IBM 635033U/UV5AUL7I3DM, BIOS 20KT46 AUS 06/04/2004 Apr 27 01:51:59 cerberus kernel: [135061.356008] task: f56dd780 ti: f3182000 task.ti: f3182000 Apr 27 01:51:59 cerberus kernel: [135061.356008] EIP: 0060:[<c115bf51>] EFLAGS: 00010246 CPU: 0 Apr 27 01:51:59 cerberus kernel: [135061.356008] EIP is at find_get_entry+0x31/0xa0 Apr 27 01:51:59 cerberus kernel: [135061.356008] EAX: f34cdbb8 EBX: 0000000f ECX: 10000000 EDX: f34c dbb8 Apr 27 01:51:59 cerberus kernel: [135061.356008] ESI: 024200ca EDI: 000001aa EBP: f3183d48 ESP: f318 3d30 Apr 27 01:51:59 cerberus kernel: [135061.356008] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Apr 27 01:51:59 cerberus kernel: [135061.356008] CR0: 8005003b CR2: 10000010 CR3: 32fa90a0 CR4: 0000 06f0 Apr 27 01:51:59 cerberus kernel: [135061.356008] Stack: Apr 27 01:51:59 cerberus kernel: [135061.356008] 00000000 00800001 f458f920 0000000f 024200ca 00000 000 f3183d6c c115ca14 Apr 27 01:51:59 cerberus kernel: [135061.356008] 00000000 f3183d88 000001aa f458f91c 024200ca f3c42300 00000000 f3183d7c Apr 27 01:51:59 cerberus kernel: [135061.356008] c115cbcb 024200ca f458f838 f3183dc8 c123da0b 00001000 f3183dc8 c123e6b1 Apr 27 01:51:59 cerberus kernel: [135061.356008] Call Trace: Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c115ca14>] pagecache_get_page+0x24/0x1b0 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c115cbcb>] grab_cache_page_write_begin+0x2b/0x40 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c123da0b>] ext4_da_write_begin+0x7b/0x330 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c123e6b1>] ? ext4_da_write_end+0x131/0x310 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c115c0f4>] generic_perform_write+0xb4/0x180 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c115e32a>] __generic_file_write_iter+0x1aa/0x1f0 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c1233083>] ext4_file_write_iter+0x183/0x4a0 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c1099181>] ? set_next_entity+0x711/0xac0 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c1310dad>] ? common_file_perm+0x4d/0x180 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c11c227b>] new_sync_write+0x7b/0xb0 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c11c22ea>] __vfs_write+0x3a/0x50 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c11c2829>] vfs_write+0x89/0x1a0 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c11c3126>] SyS_write+0x46/0x90 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c100368e>] do_fast_syscall_32+0x8e/0x130 Apr 27 01:51:59 cerberus kernel: [135061.356008] [<c1750c98>] sysenter_past_esp+0x3d/0x61 Apr 27 01:51:59 cerberus kernel: [135061.356008] Code: 83 ec 0c 3e 8d 74 26 00 83 c0 04 89 d7 89 45 f0 8b 45 f0 89 fa e8 00 8b 21 00 85 c0 89 c2 74 42 8b 08 85 c9 74 26 f6 c1 03 75 57 <8b> 59 10 85 db 74 de 8d 41 10 89 45 ec 8d 73 01 89 d8 3e 0f b1 Apr 27 01:51:59 cerberus kernel: [135061.356008] EIP: [<c115bf51>] find_get_entry+0x31/0xa0 SS:ESP 0068:f3183d30 Apr 27 01:51:59 cerberus kernel: [135061.356008] CR2: 0000000010000010 Apr 27 01:51:59 cerberus kernel: [135061.963988] ---[ end trace 35c634571be2cd81 ]--- ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-4.4.0-21-generic 4.4.0-21.37~14.04.1 ProcVersionSignature: Ubuntu 4.4.0-21.37~14.04.1-generic 4.4.6 Uname: Linux 4.4.0-21-generic i686 ApportVersion: 2.14.1-0ubuntu3.19 Architecture: i386 Date: Wed Apr 27 12:26:01 2016 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: linux-lts-xenial UpgradeStatus: No upgrade log present (probably fresh install) --- AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Apr 27 12:16 seq crw-rw---- 1 root audio 116, 33 Apr 27 12:16 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.1-0ubuntu3.19 Architecture: i386 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDmesg: [ 36.959653] ip_tables: (C) 2000-2006 Netfilter Core Team [ 42.419302] init: plymouth-upstart-bridge main process ended, respawning [ 329.702769] perf interrupt took too long (2555 > 2500), lowering kernel.perf_event_max_sample_rate to 50000 DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=c05fc47c-c9dc-4c55-bd30-320e2185fa37 Lsusb: Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: IBM 635033U Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=147eee03-cadf-4d37-bf4e-ff2954ef8ac3 ro splash quiet vt.handoff=7 ProcVersionSignature: Ubuntu 4.4.0-21.37~14.04.1-generic 4.4.6 RelatedPackageVersions: linux-restricted-modules-4.4.0-21-generic N/A linux-backports-modules-4.4.0-21-generic N/A linux-firmware 1.127.22 RfKill: Error: [Errno 2] No such file or directory Tags: trusty Uname: Linux 4.4.0-21-generic i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/04/2004 dmi.bios.vendor: IBM dmi.bios.version: 20KT46AUS dmi.board.name: UV5AUL7I3DM dmi.board.vendor: IBM dmi.chassis.asset.tag: Tag 12345 dmi.chassis.type: 6 dmi.chassis.vendor: IBM dmi.modalias: dmi:bvnIBM:bvr20KT46AUS:bd06/04/2004:svnIBM:pn635033U:pvr:rvnIBM:rnUV5AUL7I3DM:rvr:cvnIBM:ct6:cvr: dmi.product.name: 635033U dmi.sys.vendor: IBM ** Affects: linux-lts-xenial (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug apport-collected i386 trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1575860 Title: BUG: unable to handle kernel paging request at 1000 0010 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-xenial/+bug/1575860/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs