This keeps happening every few days on a single cpu Sandy Bridge box, running 3 Windows VMs on Proxmox 4.4. Can someone help to understand what's happening?
Code:
Mar 28 19:42:55 proxmox6 kernel: [133407.284601] general protection fault: 0000 [#1] SMP
Mar 28 19:42:55 proxmox6 kernel: [133407.284628] Modules linked in: cpuid nfsv3 ip_set ip6table_filter ip6_tables iptable_filter ip_tables x_tables softdog nfsd auth_rpcgss nfs_acl nfs lockd grace fscache sunrpc ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfnetlink_log nfnetlink ppdev gpio_ich intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel i915 video kvm drm_kms_helper irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 snd_pcm lrw gf128mul glue_helper ablk_helper snd_timer cryptd snd joydev input_leds drm soundcore i2c_algo_bit fb_sys_fops syscopyarea serio_raw sysfillrect pcspkr sysimgblt mei_me mei shpchp lpc_ich mac_hid parport_pc nuvoton_cir parport rc_core 8250_fintek vhost_net vhost macvtap macvlan autofs4 zfs(PO) zunicode(PO) zcommon(PO) znvpair(PO) spl(O) zavl(PO) btrfs xor raid6_pq hid_generic usbmouse usbkbd usbhid hid psmouse ahci i2c_i801 libahci r8169 mii e1000e(O) ptp pps_core pata_acpi floppy fjes
Mar 28 19:42:55 proxmox6 kernel: [133407.285117] CPU: 6 PID: 1129 Comm: z_wr_iss Tainted: P O 4.4.98-6-pve #1
Mar 28 19:42:55 proxmox6 kernel: [133407.285142] Hardware name: /DQ67OW, BIOS SWQ6710H.86A.0062.2012.0418.1112 04/18/2012
Mar 28 19:42:55 proxmox6 kernel: [133407.285171] task: ffff88080f58d400 ti: ffff88080e294000 task.ti: ffff88080e294000
Mar 28 19:42:55 proxmox6 kernel: [133407.285194] RIP: 0010:[<ffffffffc038719d>] [<ffffffffc038719d>] metaslab_rangesize_compare+0xd/0x50 [zfs]
Mar 28 19:42:55 proxmox6 kernel: [133407.285258] RSP: 0018:ffff88080e297aa0 EFLAGS: 00010282
Mar 28 19:42:55 proxmox6 kernel: [133407.285275] RAX: ffffffffc0387190 RBX: 0000000000000018 RCX: 00000014fcfda000
Mar 28 19:42:55 proxmox6 kernel: [133407.285298] RDX: 00000014fc222000 RSI: ffbf880299336480 RDI: ffff88080e502d00
Mar 28 19:42:55 proxmox6 kernel: [133407.285320] RBP: ffff88080e297ad8 R08: 00000014fc1f2000 R09: 0000000000000001
Mar 28 19:42:55 proxmox6 kernel: [133407.285343] R10: ffff88080ef68000 R11: 0000000000000000 R12: ffff88080e502d00
Mar 28 19:42:55 proxmox6 kernel: [133407.285372] R13: ffff88080f0d9528 R14: ffbf880299336480 R15: ffbf880299336498
Mar 28 19:42:55 proxmox6 kernel: [133407.285395] FS: 0000000000000000(0000) GS:ffff88083e380000(0000) knlGS:0000000000000000
Mar 28 19:42:55 proxmox6 kernel: [133407.285420] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Mar 28 19:42:55 proxmox6 kernel: [133407.285439] CR2: 00000000051d0000 CR3: 00000000b0b1e000 CR4: 0000000000062670
Mar 28 19:42:55 proxmox6 kernel: [133407.285461] Stack:
Mar 28 19:42:55 proxmox6 kernel: [133407.285470] ffffffffc00bd15f ffff88080e297ae8 ffff88080f0d9528 ffff88080e502d00
Mar 28 19:42:55 proxmox6 kernel: [133407.285500] 0000000000004000 00000014fc1f2000 ffff88080e502d00 ffff88080e297b08
Mar 28 19:42:55 proxmox6 kernel: [133407.285531] ffffffffc00bd6f6 0000000000000000 ce982de3599fec59 ffff88080f0d9400
Mar 28 19:42:55 proxmox6 kernel: [133407.285561] Call Trace:
Mar 28 19:42:55 proxmox6 kernel: [133407.285574] [<ffffffffc00bd15f>] ? avl_find+0x5f/0xa0 [zavl]
Mar 28 19:42:55 proxmox6 kernel: [133407.285594] [<ffffffffc00bd6f6>] avl_add+0x36/0x80 [zavl]
Mar 28 19:42:55 proxmox6 kernel: [133407.285631] [<ffffffffc03872eb>] metaslab_rt_add+0x2b/0x60 [zfs]
Mar 28 19:42:55 proxmox6 kernel: [133407.285670] [<ffffffffc038bc56>] range_tree_remove+0x126/0x2f0 [zfs]
Mar 28 19:42:55 proxmox6 kernel: [133407.285709] [<ffffffffc03885ad>] metaslab_block_alloc+0xad/0x190 [zfs]
Mar 28 19:42:55 proxmox6 kernel: [133407.285747] [<ffffffffc0389ff0>] metaslab_alloc+0x550/0xb10 [zfs]
Mar 28 19:42:55 proxmox6 kernel: [133407.285769] [<ffffffff811f1ec8>] ? kmem_cache_alloc+0x1b8/0x200
Mar 28 19:42:55 proxmox6 kernel: [133407.285812] [<ffffffffc03ef927>] zio_dva_allocate+0x97/0x410 [zfs]
Mar 28 19:42:55 proxmox6 kernel: [133407.286721] [<ffffffffc03ebab9>] ? zio_push_transform+0x39/0x90 [zfs]
Mar 28 19:42:55 proxmox6 kernel: [133407.287621] [<ffffffffc009c1ec>] ? taskq_member+0x5c/0x70 [spl]
Mar 28 19:42:55 proxmox6 kernel: [133407.288537] [<ffffffffc03ec91b>] zio_execute+0x9b/0x100 [zfs]
Mar 28 19:42:55 proxmox6 kernel: [133407.289419] [<ffffffffc009d4d5>] taskq_thread+0x265/0x470 [spl]
Mar 28 19:42:55 proxmox6 kernel: [133407.290289] [<ffffffff810af3f0>] ? wake_up_q+0x70/0x70
Mar 28 19:42:55 proxmox6 kernel: [133407.291169] [<ffffffffc009d270>] ? taskq_thread_spawn+0x50/0x50 [spl]
Mar 28 19:42:55 proxmox6 kernel: [133407.292036] [<ffffffff810a36cc>] kthread+0xfc/0x120
Mar 28 19:42:55 proxmox6 kernel: [133407.292909] [<ffffffff810a35d0>] ? kthread_park+0x60/0x60
Mar 28 19:42:55 proxmox6 kernel: [133407.293785] [<ffffffff81872eb5>] ret_from_fork+0x55/0x80
Mar 28 19:42:55 proxmox6 kernel: [133407.294672] [<ffffffff810a35d0>] ? kthread_park+0x60/0x60
Mar 28 19:42:55 proxmox6 kernel: [133407.295535] Code: 48 89 e5 e8 c6 32 d1 ff 5d 48 c7 05 02 0e 19 00 00 00 00 00 f3 c3 0f 1f 84 00 00 00 00 00 66 66 66 66 90 4c 8b 47 30 48 8b 57 38 <48> 8b 4e 30 48 8b 46 38 55 4c 29 c2 48 29 c8 48 89 e5 48 39 c2
Mar 28 19:42:55 proxmox6 kernel: [133407.297457] RIP [<ffffffffc038719d>] metaslab_rangesize_compare+0xd/0x50 [zfs]
Mar 28 19:42:55 proxmox6 kernel: [133407.298403] RSP <ffff88080e297aa0>
Mar 28 19:42:55 proxmox6 kernel: [133407.299374] ---[ end trace 1d73f7f7a6c5d979 ]---