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Continuous integration for the Linux Kernel - Built within Docker

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kernel_300

Build Status Issues

Linux Kernel CI for Debian

  • Uploads publicly accessable Debian Kernel Packages to packagecloud.io
  • Includes Kernel Watcher that detects new stable kernel releases and triggers builds.
  • Supports patching the Kernel with GRSecurity
  • Tested with Gitlab-CI and Travis-CI but should work on any CI system.
  • Runs in an isolated and disposble docker container.
  • No root access required when building with Docker.
  • Both the build and the kernels Work with Debian Wheezy (7) and Jessie (8).
  • Supports uploading built packages to a remote server and adding them to reprepro
  • Allows advanced kernel configuration and options

Usage

Docker

make ci

After a successfully building the kernel package, the kernel will be copied to /mnt/storage on the host.

Build Kernel Deb Without Docker

EXPORT BUILD_DIR=/home/ci #Repo location - Defaults to $HOME
sudo sed -i -e 's/^Defaults\tsecure_path.*$//' /etc/sudoers
sudo -E buildkernel.sh

Public CI Builds

Successful builds from this project get uploaded to PackageCloud.io

You may add the repository for them by running: curl https://packagecloud.io/install/repositories/mrmondo/debian-kernel/script.deb | sudo bash

Optional Configuration

The following optional environment variables can be configured as required

APT_UPDATE

Perform an apt-get update and upgrade prior to building

Default Value: false

KERNEL_VERSION

Default Value: Latest STABLE kernel version

VERSION_POSTFIX

For restrictions see the --append-to-version option of make-kpg.c

Default Value: -ci

TRUSTED_FINGERPRINT

Fingerprint of a trusted key the kernel is signed with See http://www.kernel.org/signature.html http://lwn.net/Articles/461647/

ATTENTION: Make sure you really trust it!

Default Value: ABAF 11C6 5A29 70B1 30AB E3C4 79BE 3E43 0041 1886

SOURCE_URL_BASE

Where the archive and sources are located

Default Value: https://kernel.org/pub/linux/kernel/v3.x

KEYSERVER

Server used to get the trusted key from.

Default Value: hkp://pool.sks-keyservers.net

BUILD_ONLY_LOADED_MODULES

Set to yes if you want to build only the modules that are currently loaded Speeds up the build. But modules that are not currently loaded will be missing! Only usefull if you really have to speed up the build time and the kernel is intended for the running system and the hardware is not expected to change.

Default Value: no

GRSecurity Patching

"Grsecurity is an extensive security enhancement to the Linux kernel that defends against a wide range of security threats through intelligent access control, memory corruption-based exploit prevention, and a host of other system hardening that generally require no configuration. It has been actively developed and maintained for the past 13 years. Commercial support for grsecurity is available through Open Source Security, Inc." https://grsecurity.net

GRSEC

Enable GRSecurity Patching

Default Value: false

GRSEC_RSS

Source of GRSecurity patch RSS feed

Default Value: https://grsecurity.net/testing_rss.php

GRSEC_KEY

Currently using The PaX Team public key

See http://sks.pkqs.net/pks/lookup?op=vindex&fingerprint=on&search=0x44D1C0F82525FE49

Default Value: 2525FE49

GRSEC_TRUSTED_FINGERPRINT

Fingerprint of a trusted key the GRSecurity patch is signed with See https://grsecurity.net/download.php ATTENTION: Make sure you really trust it!

Default Value: DE94 52CE 46F4 2094 907F 108B 44D1 C0F8 2525 FE49

Post Processing Options

PACKAGECLOUD

Enable pushing to reprepro upon successful build

Default Value: false

PACKAGE_CLOUD_URL

Must be replaced if you wish to upload to packagecloud.io

Default Value: mrmondo/debian-kernel/debian/jessie

REPREPRO

Enable pushing to reprepro upon successful build

Default Value: false

REPREPRO_HOST

The username and password to login to the reprepro host

Default Value: ci@aptproxy

REPREPO_URL

The URL of the reprepro mirror

Default Value: var/vhost/mycoolaptmirror.com/html

TODO:

Example Output

cd /home/gitlab_ci_runner/gitlab-ci-runner/tmp/builds/project-27 && git reset --hard && git clean -fdx && git remote set-url origin https://gitlab-ci-token:blablabla@gitlab.yourcompany.com/systems/kernel.git && git fetch origin
HEAD is now at 9faa7a2 initramfs-tools
From https://gitlab.yourcompany.com/systems/kernel
   9faa7a2..4ec20fd  master     -> origin/master
cd /home/gitlab_ci_runner/gitlab-ci-runner/tmp/builds/project-27 && git reset --hard && git checkout 4ec20fdb1f677a2f51b6e37a92a1fff61434ab52
HEAD is now at 9faa7a2 initramfs-tools
Previous HEAD position was 9faa7a2... initramfs-tools
HEAD is now at 4ec20fd... cleanup
make ci
RUNNING ON int-ci-02
RUNNING AS gitlab_ci_runner
make build
make[1]: Entering directory `/home/gitlab_ci_runner/gitlab-ci-runner/tmp/builds/project-27'
docker build -t contyard.yourcompany.com/linux-kernel: .
Sending build context to Docker daemon 519.2 kB

Sending build context to Docker daemon
Step 0 : FROM contyard.yourcompany.com/wheezy
 ---> 38ce0497b79a
Step 1 : MAINTAINER systems
 ---> Using cache
 ---> 5181ce4604b0
Step 2 : ENV DEBIAN_FRONTEND noninteractive
 ---> Using cache
 ---> 3b741575bd57
Step 3 : RUN apt-get -qq update && apt-get -qq install fakeroot build-essential kernel-package wget xz-utils gnupg bc devscripts apt-utils initramfs-tools && apt-get clean
 ---> Using cache
 ---> e9a92e2943ad
Step 4 : RUN mkdir -p /mnt/storage
 ---> Running in 4605ab2fa2bf
 ---> 902c01ee6f86
Removing intermediate container 4605ab2fa2bf
Step 5 : WORKDIR /app
 ---> Running in 5b9d3ab98da3
 ---> e86e27a7d592
Removing intermediate container 5b9d3ab98da3
Step 6 : ADD buildkernel.sh /app/buildkernel.sh
 ---> 1261802d8c83
Removing intermediate container 8c10c00de0ee
Step 7 : ADD kernel_config /app/.config
 ---> 5a8446b33beb
Removing intermediate container 5b872e547af5
Step 8 : RUN chmod +x buildkernel.sh && ./buildkernel.sh
 ---> Running in df3c7c8e464d
You need the following packages installed fakeroot make build-essential kernel-package for this script to work
Recieving key ABAF 11C6 5A29 70B1 30AB  E3C4 79BE 3E43 0041 1886 from the keyserver...
gpg: keyring `./kernelkey/secring.gpg' created
gpg: keyring `./kernelkey/pubring.gpg' created
gpg: requesting key 00411886 from hkp server pool.sks-keyservers.net
gpg: ./kernelkey/trustdb.gpg: trustdb created
gpg: key 00411886: public key "Linus Torvalds <torvalds@linux-foundation.org>" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
--2015-01-21 02:32:50--  http://mirror.aarnet.edu.au/pub/ftp.kernel.org/linux/kernel/v3.x/linux-3.18.3.tar.xz
Resolving mirror.aarnet.edu.au (mirror.aarnet.edu.au)... 202.158.214.106, 2001:388:30bc:cafe::beef
Connecting to mirror.aarnet.edu.au (mirror.aarnet.edu.au)|202.158.214.106|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 80944856 (77M) [application/x-xz]
Saving to: `linux-3.18.3.tar.xz'

     0K .......... .......... .......... .......... ..........  0%  128K 10m16s
    50K .......... .......... .......... .......... ..........  0%  320K 7m11s
   100K .......... .......... .......... .......... ..........  0%  638K 5m29s
   150K .......... .......... .......... .......... ..........  0%  639K 4m37s
   200K .......... .......... .......... .......... ..........  0%  641K 4m6s
   250K .......... .......... .......... .......... ..........  0% 42.8M 3m25s
   300K .......... .......... .......... .......... ..........  0%  641K 3m13s

...

 78950K .......... .......... .......... .......... .......... 99%  641K 0s
 79000K .......... .......... .......... .......... .......   100%  614K=1m41s

2015-01-21 02:34:31 (782 KB/s) - `linux-3.18.3.tar.xz' saved [80944856/80944856]

--2015-01-21 02:34:31--  http://mirror.aarnet.edu.au/pub/ftp.kernel.org/linux/kernel/v3.x/linux-3.18.3.tar.sign
Resolving mirror.aarnet.edu.au (mirror.aarnet.edu.au)... 202.158.214.106, 2001:388:30bc:cafe::beef
Connecting to mirror.aarnet.edu.au (mirror.aarnet.edu.au)|202.158.214.106|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 819 [application/x-tar]
Saving to: `linux-3.18.3.tar.sign'

     0K                                                       100% 59.6M=0s

2015-01-21 02:34:31 (59.6 MB/s) - `linux-3.18.3.tar.sign' saved [819/819]

Extracting downloaded sources to tar...
Extracting tar...
/app/linux-3.18.3 /app
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/kconfig/conf.o
  SHIPPED scripts/kconfig/zconf.tab.c
  SHIPPED scripts/kconfig/zconf.lex.c
  SHIPPED scripts/kconfig/zconf.hash.c
  HOSTCC  scripts/kconfig/zconf.tab.o
  HOSTLD  scripts/kconfig/conf
scripts/kconfig/conf --oldconfig Kconfig
#
# configuration written to .config
#
/app
/app/linux-3.18.3 /app
exec make kpkg_version=12.036+nmu3 -f /usr/share/kernel-package/ruleset/minimal.mk debian APPEND_TO_VERSION=-ix  INITRD=YES 
====== making target debian/stamp/conf/minimal_debian [new prereqs: ]======
This is kernel package version 12.036+nmu3.
test -d debian             || mkdir debian
test ! -e stamp-building || rm -f stamp-building
install -p -m 755 /usr/share/kernel-package/rules debian/rules
for file in ChangeLog  Control  Control.bin86 config templates.in rules; do                                      \
            cp -f  /usr/share/kernel-package/$file ./debian/;                               \
        done
for dir  in Config docs examples ruleset scripts pkg po;  do                                      \
          cp -af /usr/share/kernel-package/$dir  ./debian/;                                 \
        done
test -f debian/control || sed         -e 's/=V/3.18.3-ix/g'  \
                -e 's/=D/3.18.3-ix-10.00.Custom/g'         -e 's/=A/amd64/g'  \
    -e 's/=SA//g'  \
    -e 's/=I//g'            \
    -e 's/=CV/3.18/g'         \
    -e 's/=M/Unknown Kernel Package Maintainer <unknown@unconfigured.in.etc.kernel-pkg.conf>/g'         \
    -e 's/=ST/linux/g'      -e 's/=B/x86_64/g'    \
                  /usr/share/kernel-package/Control > debian/control
test -f debian/changelog ||  sed -e 's/=V/3.18.3-ix/g'       \
            -e 's/=D/3.18.3-ix-10.00.Custom/g'        -e 's/=A/amd64/g'       \
            -e 's/=ST/linux/g'     -e 's/=B/x86_64/g'         \
            -e 's/=M/Unknown Kernel Package Maintainer <unknown@unconfigured.in.etc.kernel-pkg.conf>/g'                            \
             /usr/share/kernel-package/changelog > debian/changelog
chmod 0644 debian/control debian/changelog
test -d ./debian/stamp || mkdir debian/stamp 
make -f debian/rules debian/stamp/conf/kernel-conf
make[1]: Entering directory `/app/linux-3.18.3'
====== making target debian/stamp/conf/kernel-conf [new prereqs: ]======
make EXTRAVERSION=-ix   ARCH=x86_64 \
                    oldconfig;
make[2]: Entering directory `/app/linux-3.18.3'
scripts/kconfig/conf --oldconfig Kconfig
#
# configuration written to .config
#
make[2]: Leaving directory `/app/linux-3.18.3'
make EXTRAVERSION=-ix   ARCH=x86_64 prepare
make[2]: Entering directory `/app/linux-3.18.3'
scripts/kconfig/conf --silentoldconfig Kconfig
make[2]: Leaving directory `/app/linux-3.18.3'
make[2]: Entering directory `/app/linux-3.18.3'
  SYSTBL  arch/x86/syscalls/../include/generated/asm/syscalls_32.h
  SYSHDR  arch/x86/syscalls/../include/generated/asm/unistd_32_ia32.h
  SYSHDR  arch/x86/syscalls/../include/generated/asm/unistd_64_x32.h
  SYSTBL  arch/x86/syscalls/../include/generated/asm/syscalls_64.h
  SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_32.h
  SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_64.h
  SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_x32.h
  HOSTCC  arch/x86/tools/relocs_32.o
  HOSTCC  arch/x86/tools/relocs_64.o
  HOSTCC  arch/x86/tools/relocs_common.o
  HOSTLD  arch/x86/tools/relocs
  CHK     include/config/kernel.release
  UPD     include/config/kernel.release
  WRAP    arch/x86/include/generated/asm/clkdev.h
  WRAP    arch/x86/include/generated/asm/cputime.h
  WRAP    arch/x86/include/generated/asm/dma-contiguous.h
  WRAP    arch/x86/include/generated/asm/early_ioremap.h
  WRAP    arch/x86/include/generated/asm/mcs_spinlock.h
  WRAP    arch/x86/include/generated/asm/scatterlist.h
  CHK     include/generated/uapi/linux/version.h
  UPD     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  UPD     include/generated/utsrelease.h
  CC      kernel/bounds.s
  GEN     include/generated/bounds.h
  CC      arch/x86/kernel/asm-offsets.s
  GEN     include/generated/asm-offsets.h
  CALL    scripts/checksyscalls.sh
make[2]: Leaving directory `/app/linux-3.18.3'
echo done > debian/stamp/conf/kernel-conf
make[1]: Leaving directory `/app/linux-3.18.3'
make -f debian/rules debian/stamp/conf/full-changelog
make[1]: Entering directory `/app/linux-3.18.3'
====== making target debian/stamp/conf/full-changelog [new prereqs: ]======
for file in ChangeLog  Control  Control.bin86 config templates.in rules; do       \
       cp -f  /usr/share/kernel-package/$file ./debian/;      \
  done
for dir  in Config docs examples ruleset scripts pkg po;  do        \
     cp -af /usr/share/kernel-package/$dir  ./debian/;        \
  done
install -p -m 755 /usr/share/kernel-package/rules debian/rules
sed         -e 's/=V/3.18.3-ix/g'  \
                -e 's/=D/3.18.3-ix-10.00.Custom/g'         -e 's/=A/amd64/g'  \
    -e 's/=SA//g'  \
    -e 's/=I//g'            \
    -e 's/=CV/3.18/g'         \
    -e 's/=M/Unknown Kernel Package Maintainer <unknown@unconfigured.in.etc.kernel-pkg.conf>/g'         \
    -e 's/=ST/linux/g'      -e 's/=B/x86_64/g'    \
                  /usr/share/kernel-package/Control > debian/control
sed -e 's/=V/3.18.3-ix/g' -e 's/=D/3.18.3-ix-10.00.Custom/g'        \
      -e 's/=A/amd64/g' -e 's/=M/Unknown Kernel Package Maintainer <unknown@unconfigured.in.etc.kernel-pkg.conf>/g' \
      -e 's/=ST/linux/g'   -e 's/=B/x86_64/g'       \
    /usr/share/kernel-package/changelog > debian/changelog
chmod 0644 debian/control debian/changelog
make -f debian/rules debian/stamp/conf/kernel-conf
make[2]: Entering directory `/app/linux-3.18.3'
make[2]: `debian/stamp/conf/kernel-conf' is up to date.
make[2]: Leaving directory `/app/linux-3.18.3'
make[1]: Leaving directory `/app/linux-3.18.3'
echo done > debian/stamp/conf/minimal_debian
exec debian/rules  APPEND_TO_VERSION=-ix  INITRD=YES  kernel_image
====== making target debian/stamp/conf/vars [new prereqs: ]======

====== making target debian/stamp/build/kernel [new prereqs: vars]======
This is kernel package version 12.036+nmu3.
restore_upstream_debianization
test ! -f scripts/package/builddeb.kpkg-dist || mv -f scripts/package/builddeb.kpkg-dist scripts/package/builddeb
test ! -f scripts/package/Makefile.kpkg-dist || mv -f scripts/package/Makefile.kpkg-dist scripts/package/Makefile
/usr/bin/make -j8 EXTRAVERSION=-ix  ARCH=x86_64 \
           bzImage
make[1]: Entering directory `/app/linux-3.18.3'
scripts/kconfig/conf --silentoldconfig Kconfig
make[1]: Leaving directory `/app/linux-3.18.3'
make[1]: Entering directory `/app/linux-3.18.3'
  CHK     include/config/kernel.release
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  HOSTCC  scripts/kallsyms
  HOSTCC  scripts/conmakehash
  HOSTCC  scripts/recordmcount
  HOSTCC  scripts/sortextable
  HOSTCC  scripts/genksyms/genksyms.o
  CC      scripts/mod/empty.o
  HOSTCC  scripts/selinux/genheaders/genheaders
  HOSTCC  scripts/selinux/mdp/mdp
  HOSTCC  scripts/mod/mk_elfconfig
  CC      scripts/mod/devicetable-offsets.s
  SHIPPED scripts/genksyms/parse.tab.c
  SHIPPED scripts/genksyms/lex.lex.c
  GEN     scripts/mod/devicetable-offsets.h
  MKELF   scripts/mod/elfconfig.h
  SHIPPED scripts/genksyms/keywords.hash.c
  HOSTCC  scripts/mod/modpost.o

...

chmod -R og=rX           /app/linux-3.18.3/debian/linux-image-3.18.3-ix
chown -R root:root         /app/linux-3.18.3/debian/linux-image-3.18.3-ix
dpkg --build           /app/linux-3.18.3/debian/linux-image-3.18.3-ix ..
dpkg-deb: building package `linux-image-3.18.3-ix' in `../linux-image-3.18.3-ix_3.18.3-ix-10.00.Custom_amd64.deb'.
make[2]: Leaving directory `/app/linux-3.18.3'
make[1]: Leaving directory `/app/linux-3.18.3'
/app
Congratulations! You just build a linux kernel.
Use the following command to install it: dpkg -i linux-image-3.18.3-ix*.deb

real  29m9.675s
user  106m11.252s
sys 11m12.928s
 ---> f2bc6838c313
Removing intermediate container df3c7c8e464d
Successfully built f2bc6838c313
Successfully built contyard.yourcompany.com/linux-kernel:...
make push
make[1]: Leaving directory `/home/gitlab_ci_runner/gitlab-ci-runner/tmp/builds/project-27'
make push
make[1]: Entering directory `/home/gitlab_ci_runner/gitlab-ci-runner/tmp/builds/project-27'
docker run -v /mnt/storage/:/mnt/storage contyard.yourcompany.com/linux-kernel: bash -c "cp *.deb /mnt/storage/"
make[1]: Leaving directory `/home/gitlab_ci_runner/gitlab-ci-runner/tmp/builds/project-27'
make clean
make[1]: Entering directory `/home/gitlab_ci_runner/gitlab-ci-runner/tmp/builds/project-27'
docker rmi -f contyard.yourcompany.com/linux-kernel:
Untagged: contyard.yourcompany.com/linux-kernel:latest
Deleted: f2bc6838c313d8631914614fdbee4d02bac7ff89d4eddf9943b4d51c54729cde
Deleted: 5a8446b33bebd1206336e8dfb313c4d6cf01c248f21ded23d3bc33915c6df452
Deleted: 1261802d8c8357cbeecc399565e07b407cb77020739a520dc9f186bafac400a3
Deleted: e86e27a7d592e11461dada61908100ceee03951d3777867e9883fe17518a7fe7
Deleted: 902c01ee6f862d684633f3dfc75a46b18a8fae18a87a6a22f8477ed5b019c630
make[1]: Leaving directory `/home/gitlab_ci_runner/gitlab-ci-runner/tmp/builds/project-27'

Build
/mnt/storage ~ ls
linux-image-3.18.3-ix_3.18.3-ix-10.00.Custom_amd64.deb

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