Hello,

i'm jumping in having the same problem as brendan. I bisected this
myself. The offending commit is this one:

909657615d9b3ce709be4fd95b9a9e8c8c7c2be6 is the first bad commit
commit 909657615d9b3ce709be4fd95b9a9e8c8c7c2be6
Author: Christoph Hellwig <h...@lst.de>
Date:   Thu Apr 6 15:36:32 2017 +0200

    scsi: libsas: allow async aborts
    
    We now first try to call ->eh_abort_handler from a work queue, but libsas
    was always failing that for no good reason.  Allow async aborts.
    
    Reviewed-by: Johannes Thumshirn <j...@kernel.org>
    Reviewed-by: Hannes Reinecke <h...@suse.de>
    Signed-off-by: Christoph Hellwig <h...@lst.de>
    Signed-off-by: Martin K. Petersen <martin.peter...@oracle.com>

:040000 040000 b15f1eb57bf74667aefb7a304fa09bf58386eaf2
64df540499763db44c7e1b6ec9a55ffa9b2ebedc M      drivers

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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/1726519

Title:
  Unable to handle kernel NULL pointer dereference at
  isci_task_abort_task

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Artful:
  In Progress
Status in linux source package in Bionic:
  In Progress

Bug description:
  So I just upgrade from zesty zapus to artful aardvark. At boot, right
  after I enter my drive encryption password, it kernel panics with the
  above message.

  It doesn't even get far enough along in the boot process for syslog to
  log this panic, so the only info I have is a photo of the panic.

  In short, I can't boot using the latest artful aardvark kernel, and I
  have to boot with the latest zesty zapus kernel.

  :~$ lsb_release -rd
  Description:  Ubuntu 17.10
  Release:      17.10

  linux-image-4.13.0-16-generic

  I expect this isn't normal and I should be able to boot with the new
  kernel, which I can't.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: linux-image-4.13.0-16-generic 4.13.0-16.19
  ProcVersionSignature: Ubuntu 4.10.0-37.41-generic 4.10.17
  Uname: Linux 4.10.0-37-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.7-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  lost       2071 F.... pulseaudio
   /dev/snd/controlC2:  lost       2071 F.... pulseaudio
   /dev/snd/controlC0:  lost       2071 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Mon Oct 23 12:52:20 2017
  HibernationDevice: RESUME=UUID=cf59c168-54d0-45b9-b633-240bd76bbaa6
  InstallationDate: Installed on 2016-11-01 (355 days ago)
  InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
  MachineType: LENOVO 11361Q0
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.10.0-37-generic 
root=/dev/mapper/xubuntu--vg-root ro quiet
  RelatedPackageVersions:
   linux-restricted-modules-4.10.0-37-generic N/A
   linux-backports-modules-4.10.0-37-generic  N/A
   linux-firmware                             1.169
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: Upgraded to artful on 2017-10-23 (0 days ago)
  dmi.bios.date: 09/29/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: A3KT57AUS
  dmi.board.name: LENOVO
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.asset.tag: 573921
  dmi.chassis.type: 7
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: NONE
  dmi.modalias: 
dmi:bvnLENOVO:bvrA3KT57AUS:bd09/29/2016:svnLENOVO:pn11361Q0:pvrThinkStationC30:rvnLENOVO:rnLENOVO:rvrNODPK:cvnLENOVO:ct7:cvrNONE:
  dmi.product.name: 11361Q0
  dmi.product.version: ThinkStation C30
  dmi.sys.vendor: LENOVO

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