Greg Kroah-Hartman recently announced the release of Linux Kernel 4.4.72 which addresses quite a few issues raised since last update, which includes ARM, PowerPC improvements and a host of memory fixes. Before we proceed on how to install linux kernel 4.4.72 on ubuntu and its derivatives, lets take a quick look at some of the issues addressed.
Highlight Of Linux Kernel 4.4.72 Fixes
- Increase the per-task stack canary’s random range from 32 bits to 64 bits on 64-bit platforms
- Disallow cwnd undo when switching congestion control
- Fix MR reference count leak on write with immediate
- Improvement made on data abort handling of tagged pointers on arm64
- Fix watchpoint matching for tagged pointers
- Don’t perform cached access checks before we’ve OPENed the file
- consider memblock reservations for deferred memory initialization sizing
- Fix panic when serial console and DMA are enabled
- Drop krefs for interrupted tty lock
- Fix race between read and ioctl for ALSA timer
- Drop kernel samples even though :u is specified
- Fix percpu allocations to be NUMA aware for powerpc
- Adjust tests to deal with SMAP/PAN
See release notes for full details
How to install Linux Kernel 4.4.72 on Ubuntu 17.04
- Select your operating system version and install
32bit OS
cd /tmp wget kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.72/linux-headers-4.4.72-040472_4.4.72-040472.201706141033_all.deb kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.72/linux-headers-4.4.72-040472-generic_4.4.72-040472.201706141033_i386.deb kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.72/linux-image-4.4.72-040472-generic_4.4.72-040472.201706141033_i386.deb sudo dpkg -i linux-headers-4.4*.deb linux-image-4.4*.deb
- Update the Grub boot loader
sudo update-grub
64bit OS
cd /tmp wget kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.72/linux-headers-4.4.72-040472_4.4.72-040472.201706141033_all.deb kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.72/linux-headers-4.4.72-040472-generic_4.4.72-040472.201706141033_amd64.deb kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.72/linux-image-4.4.72-040472-generic_4.4.72-040472.201706141033_amd64.deb sudo dpkg -i linux-headers-4.4*.deb linux-image-4.4*.deb
How to remove Linux Kernel 4.4.72 from Ubuntu 17.04
sudo apt-get remove linux-headers-4.4* linux-image-4.4*
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