User:Ignatenkobrain/Kernel/Bisection

Installing git:

# yum install git -y

Goto home directory:

$ cd ~

Clone upstream kernel:

$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

Goto directory with kernel:

$ cd linux

Start bisection:

$ git bisect start
$ git bisect bad v3.11-rc1
$ git bisect good v3.9

Download latest config:

$ curl http://pkgs.fedoraproject.org/cgit/kernel.git/plain/config-generic > .config
$ curl http://pkgs.fedoraproject.org/cgit/kernel.git/plain/config-`arch`-generic >> .config

Make new config from downloaded Fedora configs:

$ make oldconfig

Export flags for smp processor:

export MAKEOPTS="`rpm --eval %{?_smp_mflags}`"

Compiling kernel:

$ make bzImage && make modules 

Install new kernel:

# make modules_install && make install

Update grub:

• BIOS:

# grub2-mkconfig -o /boot/grub2/grub.cfg

• UEFI:

# grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg

Reboot:

# systemctl reboot

Testing problem..

Goto directory with linux kernel:

$ cd ~/linux

Problem still present:

$ git bisect bad

Problem isn't present:

$ git bisect good

Kernel doesn't boot or other:

$ git bisect skip