[Thu Nov 19 11:46:03 2015] ------------[ cut here ]------------
[Thu Nov 19 11:46:03 2015] kernel BUG at /build/linux-AxjFAn/linux-4.2.0/mm/memory.c:3146!
[Thu Nov 19 11:46:03 2015] invalid opcode: 0000 [#1] SMP 
[Thu Nov 19 11:46:03 2015] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace fscache iosf_mbi crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd joydev input_leds ppdev pvpanic serio_raw 8250_fintek i2c_piix4 parport_pc parport mac_hid sunrpc autofs4 floppy qxl syscopyarea sysfillrect sysimgblt ttm drm_kms_helper psmouse drm pata_acpi
[Thu Nov 19 11:46:03 2015] CPU: 0 PID: 932 Comm: minimal_reprodu Not tainted 4.2.0-16-generic #19-Ubuntu
[Thu Nov 19 11:46:03 2015] Hardware name: oVirt oVirt Node, BIOS 0.5.1 01/01/2007
[Thu Nov 19 11:46:03 2015] task: ffff880037a45280 ti: ffff880037ad0000 task.ti: ffff880037ad0000
[Thu Nov 19 11:46:03 2015] RIP: 0010:[<ffffffff811b53f6>]  [<ffffffff811b53f6>] handle_mm_fault+0x1086/0x17e0
[Thu Nov 19 11:46:03 2015] RSP: 0018:ffff880037ad3b68  EFLAGS: 00010246
[Thu Nov 19 11:46:03 2015] RAX: 0000000000000100 RBX: ffff88003519b790 RCX: 0000000000000120
[Thu Nov 19 11:46:03 2015] RDX: ffff88003b1eca38 RSI: 00003ffffffff000 RDI: 000000003b1ec067
[Thu Nov 19 11:46:03 2015] RBP: ffff880037ad3c48 R08: 000000003081e120 R09: ffff88003519b790
[Thu Nov 19 11:46:03 2015] R10: ffff880000000a38 R11: 0000000000000000 R12: ffff880035b63380
[Thu Nov 19 11:46:03 2015] R13: 0000000000000000 R14: 00007f0d1e547000 R15: ffff8800358fbc00
[Thu Nov 19 11:46:03 2015] FS:  00007f0d1e53d700(0000) GS:ffff88003e200000(0000) knlGS:0000000000000000
[Thu Nov 19 11:46:03 2015] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[Thu Nov 19 11:46:03 2015] CR2: 00007f0d1e546000 CR3: 000000003b93e000 CR4: 00000000000406f0
[Thu Nov 19 11:46:03 2015] Stack:
[Thu Nov 19 11:46:03 2015]  ffff880037ad3b88 ffff88003e216640 ffff880038342940 ffff88003e216640
[Thu Nov 19 11:46:03 2015]  ffff880037ad3bf8 ffffffff811ae74d ffff880037ad3bb8 ffff88003519b790
[Thu Nov 19 11:46:03 2015]  ffff8800358fbc00 0000000000000a38 0000000000000000 00007f0d00000001
[Thu Nov 19 11:46:03 2015] Call Trace:
[Thu Nov 19 11:46:03 2015]  [<ffffffff811ae74d>] ? follow_page_pte+0xbd/0x350
[Thu Nov 19 11:46:03 2015]  [<ffffffff811aeb82>] ? follow_page_mask+0x1a2/0x330
[Thu Nov 19 11:46:03 2015]  [<ffffffff811aee86>] __get_user_pages+0x176/0x5e0
[Thu Nov 19 11:46:03 2015]  [<ffffffff810a5ac7>] ? wake_up_process+0x27/0x50
[Thu Nov 19 11:46:03 2015]  [<ffffffff811af6f2>] get_user_pages+0x52/0x60
[Thu Nov 19 11:46:03 2015]  [<ffffffff811afbe6>] __access_remote_vm+0xe6/0x2d0
[Thu Nov 19 11:46:03 2015]  [<ffffffff811b5d80>] access_process_vm+0x50/0x70
[Thu Nov 19 11:46:03 2015]  [<ffffffff810bcee0>] ? __wake_up_sync+0x20/0x20
[Thu Nov 19 11:46:03 2015]  [<ffffffff81085d05>] ptrace_request+0x355/0x580
[Thu Nov 19 11:46:03 2015]  [<ffffffff810a5dbb>] ? wait_task_inactive+0x11b/0x200
[Thu Nov 19 11:46:03 2015]  [<ffffffff81023791>] arch_ptrace+0x281/0x2f0
[Thu Nov 19 11:46:03 2015]  [<ffffffff81085faf>] SyS_ptrace+0x7f/0x110
[Thu Nov 19 11:46:03 2015]  [<ffffffff817ef9f2>] entry_SYSCALL_64_fastpath+0x16/0x75
[Thu Nov 19 11:46:03 2015] Code: ff ff e8 6e cb fd ff 8b 85 78 ff ff ff 89 85 70 ff ff ff e9 3e f1 ff ff 48 8b bd 58 ff ff ff c6 07 00 66 66 66 90 e9 2b f1 ff ff <0f> 0b 83 e8 1e 83 f8 01 0f 86 39 05 00 00 c7 85 70 ff ff ff 10 
[Thu Nov 19 11:46:03 2015] RIP  [<ffffffff811b53f6>] handle_mm_fault+0x1086/0x17e0
[Thu Nov 19 11:46:03 2015]  RSP <ffff880037ad3b68>
[Thu Nov 19 11:46:03 2015] ---[ end trace d841d6c66f055d87 ]---