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

[Alexander Fomichev]

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

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.