ASLR (Address Space Layout Randomization) stuff (exec shield?).

Links:

• Kernel address space layout randomization (LWN, 2013)
• Linux and ASLR: kernel/randomize_va_space

Questions:

• What about kernel ASLR (KASLR)? Look for RANDOMIZE options.

• Binaries must be position-independent executables.

Checking:

$ sysctl -a --pattern randomize
kernel.randomize_va_space = 2
$

Changing:

# echo 2 > /proc/sys/kernel/randomize_va_space
# sysctl -w kernel.randomize_va_space=2