With Linux 4.1.17-wily from http://kernel.ubuntu.com/~kernel-
ppa/mainline/?C=N;O=D:

    [   58.996682] ------------[ cut here ]------------
    [   58.997318] kernel BUG at 
/var/lib/dkms/openafs/1.6.14/build/src/libafs/MODLOAD-4.1.17-040117-generic-SP/osi_alloc.c:356!
    [   58.997920] invalid opcode: 0000 [#1] SMP 
    [   58.998523] Modules linked in: openafs(POE) bbswitch(OE) binfmt_misc 
bluetooth pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) 
nls_iso8859_1 ax88179_178a usbnet mii uvcvideo videobuf2_vmalloc 
videobuf2_memops videobuf2_core v4l2_common arc4 videodev media iwldvm 
intel_rapl iosf_mbi x86_pkg_temp_thermal mac80211 intel_powerclamp coretemp 
crct10dif_pclmul kvm_intel crc32_pclmul kvm iwlwifi ideapad_laptop joydev 
lpc_ich cryptd mei_me cfg80211 mei serio_raw sparse_keymap mac_hid shpchp 
parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq bcache hid_generic 
usbhid hid i915 i2c_algo_bit drm_kms_helper psmouse ahci drm libahci wmi video
    [   59.001487] CPU: 0 PID: 2360 Comm: afsd Tainted: P           OE   
4.1.17-040117-generic #201601311534
    [   59.002297] Hardware name: LENOVO IdeaPad U410    /Lenovo          , 
BIOS 65CN90WW 09/25/2012
    [   59.003118] task: ffff880223b98a10 ti: ffff880215f70000 task.ti: 
ffff880215f70000
    [   59.003951] RIP: 0010:[<ffffffffc0864af5>]  [<ffffffffc0864af5>] 
osi_linux_free+0x95/0xa0 [openafs]
    [   59.004827] RSP: 0018:ffff880215f73ce8  EFLAGS: 00010292
    [   59.005684] RAX: 0000000000000035 RBX: 0000000031cfce00 RCX: 
0000000000000035
    [   59.006546] RDX: ffff88022f211fd8 RSI: ffff88022f20e738 RDI: 
ffff88022f20e738
    [   59.007406] RBP: ffff880215f73d08 R08: 000000000000000a R09: 
0000000000000096
    [   59.008267] R10: 0000000000014258 R11: 00000000000003e7 R12: 
0000000000000000
    [   59.009128] R13: 0000000000000002 R14: ffff880223a8f840 R15: 
0000000000000000
    [   59.009978] FS:  00007f1807f00700(0000) GS:ffff88022f200000(0000) 
knlGS:0000000000000000
    [   59.010836] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    [   59.011690] CR2: 00007fa3dba66000 CR3: 0000000214066000 CR4: 
00000000001406f0
    [   59.012554] Stack:
    [   59.013407]  ffff880215f73cf8 ffff8800c73f3800 ffff880215f73d18 
ffff8800c5bca800
    [   59.014281]  ffff880215f73d18 ffffffffc081afab ffff880215f73d68 
ffffffffc0868167
    [   59.015158]  ffff8800c664a400 ffff8800c5bcaad8 ffff880215f73d48 
ffff8800c5bca800
    [   59.016041] Call Trace:
    [   59.016935]  [<ffffffffc081afab>] afs_osi_Free+0x2b/0x30 [openafs]
    [   59.017829]  [<ffffffffc0868167>] afs_fill_super+0x247/0x400 [openafs]
    [   59.018728]  [<ffffffffc0867f20>] ? afs_alloc_inode+0x20/0x20 [openafs]
    [   59.019617]  [<ffffffff8120451d>] mount_nodev+0x4d/0xa0
    [   59.020520]  [<ffffffffc0867d38>] afs_mount+0x18/0x20 [openafs]
    [   59.021416]  [<ffffffff812050b8>] mount_fs+0x38/0x190
    [   59.022314]  [<ffffffff811a94f5>] ? __alloc_percpu+0x15/0x20
    [   59.023222]  [<ffffffff8122225b>] vfs_kern_mount+0x6b/0x120
    [   59.024135]  [<ffffffff81224be4>] do_mount+0x224/0xd30
    [   59.025050]  [<ffffffff81225a40>] SyS_mount+0x90/0xe0
    [   59.025953]  [<ffffffff817eb932>] system_call_fastpath+0x16/0x75
    [   59.026851] Code: f6 f8 ff 48 c7 c7 a0 b9 88 c0 83 2d 2d ba 03 00 01 e8 
10 4a f8 c0 48 83 c4 18 5b 5d c3 48 c7 c7 60 68 88 c0 31 c0 e8 13 d5 f7 c0 <0f> 
0b 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 c7 c7 a0 
    [   59.028868] RIP  [<ffffffffc0864af5>] osi_linux_free+0x95/0xa0 [openafs]
    [   59.029886]  RSP <ffff880215f73ce8>
    [   59.030918] ---[ end trace ba598a99704d250c ]---

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https://bugs.launchpad.net/bugs/1545273

Title:
  kernel bug "invalid opcode: 0000 [#1] SMP"

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