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** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1815176

Title:
  Out-of-tree kernel modules can't be built

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Trying to build an external module with gcc 7.3.0 fails with an error
  similar to:

   CC [M]  /home/user/....../ApiFunc.o
  In file included from ./include/linux/mmdebug.h:5:0,
                  from ./include/linux/gfp.h:5,
                  from ./include/linux/slab.h:15,
                  from /home/user/......./ApiFunc.c:51:
  ./include/linux/bug.h:5:10: fatal error: asm/bug.h: No such file or directory
  #include <asm/bug.h>
           ^~~~~~~~~~~
  compilation terminated.

  This problem is already fixed in the linux kernel starting from version 4.17
  We need to backport the following patch to Ubuntu kernel:
  https://patchwork.kernel.org/patch/10309291/

  Tested by me that it helps.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-45-generic 4.15.0-45.48
  ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18
  Uname: Linux 4.15.0-45-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  julia      1360 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Feb  8 12:17:00 2019
  InstallationDate: Installed on 2018-12-28 (41 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 
(20180725)
  MachineType: LENOVO 20M5003QRT
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=ru_RU.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-45-generic 
root=UUID=4384c2b9-39c0-41fe-a898-ef2c212df2e3 ro quiet splash vt.handoff=1
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-45-generic N/A
   linux-backports-modules-4.15.0-45-generic  N/A
   linux-firmware                             1.173.3
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/03/2018
  dmi.bios.vendor: LENOVO
  dmi.bios.version: R0RET31W (1.14 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20M5003QRT
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrR0RET31W(1.14):bd08/03/2018:svnLENOVO:pn20M5003QRT:pvrThinkPadL380:rvnLENOVO:rn20M5003QRT:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
  dmi.product.family: ThinkPad L380
  dmi.product.name: 20M5003QRT
  dmi.product.version: ThinkPad L380
  dmi.sys.vendor: LENOVO

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