zengkefu@server1:/usr/src$ uname -a
Linux server1 4.10.0-19-generic #21-Ubuntu SMP Thu Apr 6 17:04:57 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

查找源代码：

zengkefu@server1:/usr/src$ sudo apt-cache search linux-source
linux-source - Linux kernel source with Ubuntu patches
linux-source-4.10.0 - Linux kernel source for version 4.10.0 with Ubuntu patches

下载源代码

zengkefu@server1:/usr/src$ sudo apt-get install linux-source-4.10.0

解压源代码

cd  /usr/src

sudo tar -jvxf linux-source-4.10.0.tar.bz2

下载Ubuntn 17.04 内核源代码