It's crashing on boot with this version. It's related to paging, so it might be relevant to the issue, so I've attached the full dmesg and here's the actual crash:
[ 3.716345] BUG: unable to handle kernel paging request at 000060ffc0002370 [ 3.720056] IP: [<ffffffff811a6ae1>] mem_cgroup_move_account+0xd1/0x250 [ 3.720056] PGD 0 [ 3.720056] Oops: 0000 [#1] SMP [ 3.720056] Modules linked in: ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_tcpudp xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables x_tables autofs4 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse floppy pata_acpi [ 3.720056] CPU: 0 PID: 4 Comm: kworker/0:0 Not tainted 3.12.0-031200rc2-generic #201512161751 [ 3.720056] Hardware name: Xen HVM domU, BIOS 4.2.amazon 12/07/2015 [ 3.720056] Workqueue: events css_killed_work_fn [ 3.720056] task: ffff88003da946b0 ti: ffff88003daac000 task.ti: ffff88003daac000 [ 3.720056] RIP: 0010:[<ffffffff811a6ae1>] [<ffffffff811a6ae1>] mem_cgroup_move_account+0xd1/0x250 [ 3.720056] RSP: 0000:ffff88003daadcc8 EFLAGS: 00010046 [ 3.720056] RAX: 0000000000000246 RBX: ffff88003d803a60 RCX: 000000000000053e [ 3.720056] RDX: 000060ffc0002358 RSI: 0000000000000001 RDI: ffff88003c4e822c [ 3.720056] RBP: ffff88003daadd20 R08: ffff88003cc55000 R09: 0000000000000004 [ 3.720056] R10: ffff88003c4e8000 R11: 0000000000000001 R12: 0000000000000000 [ 3.720056] R13: ffffea0000e0e980 R14: ffff88003c4e8000 R15: 0000000000000001 [ 3.720056] FS: 0000000000000000(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000 [ 3.720056] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.720056] CR2: 000060ffc0002370 CR3: 0000000036754000 CR4: 00000000001406f0 [ 3.720056] Stack: [ 3.720056] ffffffff811a7bc8 ffff88003fffb780 ffffea0000e0e980 ffff88003cc55000 [ 3.720056] ffff88003c4e8000 ffff88003c4e822c ffff880036c1da00 ffffea0000e0e980 [ 3.720056] ffff88003fffbcc0 ffff88003d803a60 ffffea0000e0e9a0 ffff88003daadda8 [ 3.720056] Call Trace: [ 3.720056] [<ffffffff811a7bc8>] ? mem_cgroup_page_lruvec+0x28/0x90 [ 3.720056] [<ffffffff811a8427>] mem_cgroup_reparent_charges+0x257/0x460 [ 3.720056] [<ffffffff811a87df>] mem_cgroup_css_offline+0xaf/0x220 [ 3.720056] [<ffffffff810de897>] offline_css+0x27/0x50 [ 3.720056] [<ffffffff810e199d>] css_killed_work_fn+0x2d/0xa0 [ 3.720056] [<ffffffff81081032>] process_one_work+0x182/0x450 [ 3.720056] [<ffffffff81081dc1>] worker_thread+0x121/0x410 [ 3.720056] [<ffffffff81081ca0>] ? rescuer_thread+0x3d0/0x3d0 [ 3.720056] [<ffffffff81088ba0>] kthread+0xc0/0xd0 [ 3.720056] [<ffffffff81088ae0>] ? kthread_create_on_node+0x120/0x120 [ 3.720056] [<ffffffff816ff4fc>] ret_from_fork+0x7c/0xb0 [ 3.720056] [<ffffffff81088ae0>] ? kthread_create_on_node+0x120/0x120 [ 3.720056] Code: d6 00 55 00 4d 85 e4 4c 8b 55 c8 4c 8b 45 c0 0f 85 a5 00 00 00 41 8b 55 18 85 d2 0f 88 99 00 00 00 49 8b 96 30 02 00 00 45 89 fb <4c> 39 5a 18 0f 8c c2 00 00 00 44 89 f9 f7 d9 89 ce 65 48 01 72 [ 3.720056] RIP [<ffffffff811a6ae1>] mem_cgroup_move_account+0xd1/0x250 [ 3.720056] RSP <ffff88003daadcc8> [ 3.720056] CR2: 000060ffc0002370 [ 3.720056] ---[ end trace 9ea086b6da9e6208 ]--- ** Attachment added: "kswapd0-kernel-oops.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518457/+attachment/4535981/+files/kswapd0-kernel-oops.txt -- 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/1518457 Title: kswapd0 100% CPU usage Status in linux package in Ubuntu: In Progress Bug description: As per bug 721896 and various others: I'm on an AWS t2.micro instance (Xeon E5-2670, 991MiB of memory). Occasionally (about once a day), kswapd0 falls into a busy loop and spins on 100% CPU usage indefinitely. This can be provoked by copying/writing large files (e.g. dding a 256MB file), but it happens occasionally otherwise. System memory usage (not including buffers/caches) currently sits at 36%, which is typical[1]. Initially I had no swap space configured; I've since tried enabling a 256MB swap file, but the problem continues to occur and no swap space is used. The system can be recovered with `echo 1 > /proc/sys/vm/drop_caches`. Happy to provide further information/take further debugging actions. [1] Full output from `free`: total used free shared buffers cached Mem: 1014936 483448 531488 28556 9756 112700 -/+ buffers/cache: 360992 653944 Swap: 262140 0 262140 ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-18-generic 4.2.0-18.22 ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3 Uname: Linux 4.2.0-18-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Nov 19 19:40 seq crw-rw---- 1 root audio 116, 33 Nov 19 19:40 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.19.1-0ubuntu5 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 Date: Fri Nov 20 20:44:30 2015 Ec2AMI: ami-1c552a76 Ec2AMIManifest: (unknown) Ec2AvailabilityZone: us-east-1d Ec2InstanceType: t2.micro Ec2Kernel: unavailable Ec2Ramdisk: unavailable IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 MachineType: Xen HVM domU PciMultimedia: ProcEnviron: TERM=screen PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 xen ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic root=UUID=35bc01f4-4602-4823-976e-508edef899df ro console=tty1 console=ttyS0 net.ifnames=0 RelatedPackageVersions: linux-restricted-modules-4.2.0-18-generic N/A linux-backports-modules-4.2.0-18-generic N/A linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/06/2015 dmi.bios.vendor: Xen dmi.bios.version: 4.2.amazon dmi.chassis.type: 1 dmi.chassis.vendor: Xen dmi.modalias: dmi:bvnXen:bvr4.2.amazon:bd05/06/2015:svnXen:pnHVMdomU:pvr4.2.amazon:cvnXen:ct1:cvr: dmi.product.name: HVM domU dmi.product.version: 4.2.amazon dmi.sys.vendor: Xen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518457/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
