Stack Overflow Protection on UNIX/Linux Platforms

When using Stack Overflow Protection on a UNIX or Linux platform, consider the following:

(Solaris 11 AMD) STOP is disabled for Solaris 11 and later because Solaris 11 natively provides stack protection: Solaris 11 changes process stack location and has built-in support for Address Space Layout Randomization (ASLR). By default, this protection is turned on for tagged files, which includes zones.
(Red Hat Linux, SuSE Linux) When Linux native stack randomization (exec-shield-randomize) is enforced, the STOP feature is not activated.
(Linux s390 RHEL 4) Native stack randomization does not work in RHEL 4 and you must deactivate exec-shield-randomize for STOP to be active.

To deactivate native stack randomization, enter the following command:

echo 0 > /proc/sys/kernel/exec-shield-randomize