Although we have moved to the oneiric backports kernel, we are still seeing these MCE error. In some cases replacing RAM seems to solve the issue. But we are still not quite certain, that this is actually the cause because we have found the following:
May 13 15:03:39 node8 kernel: [260532.465745] BUG: unable to handle kernel paging request at ffff8806514603d0 May 13 15:03:39 node8 kernel: [260532.465803] IP: [<ffffffff81156327>] remove_rmap_item_from_tree+0xe7/0x150 May 13 15:03:39 node8 kernel: [260532.465845] PGD 1c04063 PUD 0 May 13 15:03:39 node8 kernel: [260532.465875] Oops: 0002 [#1] SMP May 13 15:03:39 node8 kernel: [260532.465906] CPU 1 May 13 15:03:39 node8 kernel: [260532.465913] Modules linked in: cls_u32 sch_sfq sch_htb xt_physdev xt_mac ip6table_filter ip6_tables ib_iser rdma_cm ib_cm ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 iw_cm ib_sa xt_state nf_conntrack ib_mad ib_core ipt_REJECT xt_tcpudp ib_addr iptable_filter ip_tables iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi x_tables nouveau ttm drm_kms_helper drm i2c_ algo_bit mxm_wmi lp kvm_intel wmi kvm speedstep_lib serio_raw parport i7core_edac edac_core video bridge stp multipath linear 3w_9xxx 3w_xxxx raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 e1000 r8169 aacraid ahci libahci sata_nv sata_sil sata_via May 13 15:03:39 node8 kernel: [260532.466384] May 13 15:03:39 node8 kernel: [260532.466407] Pid: 50, comm: ksmd Not tainted 3.0.0-19-server #33~lucid1-Ubuntu MSI MS-7522/MSI X58 Pro-E (MS-7522) May 13 15:03:39 node8 kernel: [260532.466470] RIP: 0010:[<ffffffff81156327>] [<ffffffff81156327>] remove_rmap_item_from_tree+0xe7/0x150 May 13 15:03:39 node8 kernel: [260532.466527] RSP: 0018:ffff88061aaafdd0 EFLAGS: 00010202 May 13 15:03:39 node8 kernel: [260532.466557] RAX: 0000000000022200 RBX: ffff88034830a6c0 RCX: 0000000000000034 May 13 15:03:39 node8 kernel: [260532.466607] RDX: 0000000000000000 RSI: ffffea001523e498 RDI: ffff8806514603a8 May 13 15:03:39 node8 kernel: [260532.466659] RBP: ffff88061aaafdf0 R08: 0000000000000000 R09: 24c0000000000000 May 13 15:03:39 node8 kernel: [260532.466710] R10: ffff8805fc06f000 R11: 0000000000000001 R12: ffff8806173c79d8 May 13 15:03:39 node8 kernel: [260532.466758] R13: ffffea001523e498 R14: ffff880617775b68 R15: 0000000000000000 May 13 15:03:39 node8 kernel: [260532.466807] FS: 0000000000000000(0000) GS:ffff88063fc20000(0000) knlGS:0000000000000000 May 13 15:03:39 node8 kernel: [260532.466858] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b May 13 15:03:39 node8 kernel: [260532.466889] CR2: ffff8806514603d0 CR3: 0000000001c03000 CR4: 00000000000026e0 May 13 15:03:39 node8 kernel: [260532.466938] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 May 13 15:03:39 node8 kernel: [260532.466986] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 May 13 15:03:39 node8 kernel: [260532.467036] Process ksmd (pid: 50, threadinfo ffff88061aaae000, task ffff8806174eae40) May 13 15:03:39 node8 kernel: [260532.467085] Stack: May 13 15:03:39 node8 kernel: [260532.467107] ffffea001512c9b8 ffff8802f6f7c180 ffff88034830a6c0 ffff88061147c480 May 13 15:03:39 node8 kernel: [260532.467166] ffff88061aaafe10 ffffffff811563bf ffff88061aaafea8 ffff880617775b00 May 13 15:03:39 node8 kernel: [260532.467225] ffff88061aaafe60 ffffffff811567d1 ffff88061aaafe60 ffff880617775b58 May 13 15:03:39 node8 kernel: [260532.467283] Call Trace: May 13 15:03:39 node8 kernel: [260532.467310] [<ffffffff811563bf>] remove_trailing_rmap_items+0x2f/0x60 May 13 15:03:39 node8 kernel: [260532.467343] [<ffffffff811567d1>] scan_get_next_rmap_item+0x81/0x450 May 13 15:03:39 node8 kernel: [260532.467376] [<ffffffff8115702e>] ksm_scan_thread+0xfe/0x2d0 May 13 15:03:39 node8 kernel: [260532.467409] [<ffffffff81084c30>] ? wake_up_bit+0x40/0x40 May 13 15:03:39 node8 kernel: [260532.467440] [<ffffffff81156f30>] ? cmp_and_merge_page+0x390/0x390 May 13 15:03:39 node8 kernel: [260532.467473] [<ffffffff810846d6>] kthread+0x96/0xa0 May 13 15:03:39 node8 kernel: [260532.467505] [<ffffffff8160e064>] kernel_thread_helper+0x4/0x10 May 13 15:03:39 node8 kernel: [260532.467537] [<ffffffff81084640>] ? kthread_worker_fn+0x190/0x190 May 13 15:03:39 node8 kernel: [260532.467569] [<ffffffff8160e060>] ? gs_change+0x13/0x13 May 13 15:03:39 node8 kernel: [260532.467599] Code: 89 ef 48 89 53 30 48 89 43 38 e8 05 91 fb ff 4c 89 ef e8 2d 56 fc ff 49 83 7c 24 18 00 74 4d 48 83 2d bd 51 d9 00 01 48 8b 7b 08 <f0> ff 4f 28 0f 94 c0 84 c0 74 05 e8 69 95 fe ff 48 81 63 18 00 May 13 15:03:39 node8 kernel: [260532.467850] RIP [<ffffffff81156327>] remove_rmap_item_from_tree+0xe7/0x150 May 13 15:03:39 node8 kernel: [260532.467888] RSP <ffff88061aaafdd0> May 13 15:03:39 node8 kernel: [260532.467913] CR2: ffff8806514603d0 May 13 15:03:39 node8 kernel: [260532.468195] ---[ end trace f2b245c86376149e ]--- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/809313 Title: mcelog errors and server freeze with qemu-kvm 0.12.3 and linux- image-2.6.32-32-server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/809313/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
