On Thu, Jul 19, 2007 at 09:10:23AM +0200, Franck Bui-Huu wrote: > This patch adds a page size range randomisation to the user > stack pointer. Looks fine to me aside of the issue Nigel raised. There is a constant defining the ABI-specific alignment in <asm/asm.h>: #if (_MIPS_SIM == _MIPS_SIM_ABI32) #define ALSZ 7 #define ALMASK ~7 #endif #if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64) #define ALSZ 15 #define ALMASK ~15 #endif This will unnecessarily increase the alignment of the stack wasting a few bytes of memory for O32 binaries running on 64-bit kernels but I'd just ignore this artefact; the cure would be uglier than the disease ;-) Ralf