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[Bug 1494893] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000038

 

Ertan Günay, thanks for the quick response.

>"I can copy the files from anywhere to nas via MC (Midnigth Commander)
in terminal with kernel 4.2.0 and the last kernel 4.3.0.rc1. Th problem
happens in desktop mode with nautilus or thunar or the other same
programs. I have tried to reboot system, nothing has been change about
this issue. But interesting, it has a black screen instead of plymouth
while booting."

Unfortunately, while you are providing more detail, you aren't providing
enough organized detail to get a confirmed picture of what happens when.

To clarify:
1) With Midnight Commander, there is no kernel call crash at all with any kernel version?
2) With either Nautilus or Thunar, there is a kernel call crash with Ubuntu kernel 4.2.0-7, but not with upstream 4.3-rc1?

However, let the scope of this bug report be only how a kernel call
trace occurs in Ubuntu kernel 4.2.0-7, but doesn't with upstream
4.3-rc1. If you are having issues with individual file managers, that
would be scoped in a separate report. You may want to wait until this
one is resolved first before filing additional reports.

Despite this, the next step is to fully reverse commit bisect from
kernel 4.2 to 4.3-rc1 in order to identify the last bad commit, followed
immediately by the first good one. Once this commit has been identified,
then it may be reviewed as a candidate for backporting into your
release. Could you please do this following
https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F
?

Please note, finding adjacent kernel versions is not fully commit
bisecting.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

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https://bugs.launchpad.net/bugs/1494893

Title:
  BUG: unable to handle kernel NULL pointer dereference at
  0000000000000038

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  while moving files from local hdd to NAS system, Ubuntu locked twice.

  ProblemType: KernelOops
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-7-generic 4.2.0-7.7
  ProcVersionSignature: Ubuntu 4.2.0-7.7-generic 4.2.0
  Uname: Linux 4.2.0-7-generic x86_64
  Annotation: Your system might become unstable now and might need to be restarted.
  ApportVersion: 2.18.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  egtaroot   1694 F.... pulseaudio
   /dev/snd/controlC1:  egtaroot   1694 F.... pulseaudio
  Date: Fri Sep 11 21:48:17 2015
  DuplicateSignature: BUG: unable to handle kernel NULL pointer dereference at location RIP: 0010:location  location cifs_ioctl_clone.constprop.4+0x127/0x310 [cifs]
  Failure: oops
  HibernationDevice: RESUME=UUID=1f126905-ef92-4f88-a1c9-de5d23389d16
  InstallationDate: Installed on 2015-08-16 (26 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150815.1)
  IwConfig:
   enp3s0    no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: System manufacturer System Product Name
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-7-generic root=UUID=40ffe8ef-a968-42ab-9e9a-d648e8a9fb4c ro quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-3ubuntu8
  RfKill:
   
  SourcePackage: linux
  Title: BUG: unable to handle kernel NULL pointer dereference at 0000000000000038
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/11/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0603
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: P5G41-M LX
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0603:bd06/11/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5G41-MLX:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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