This effectively makes the stack base on the csu _start entry randomized. The gap is enabled if ASLR is for the ABI is enabled, and then kern.elf{64,32}.aslr.stack_gap specify the max percentage of the initial stack size that can be wasted for gap. Setting it to zero disables the gap, and max is capped at 50%. Only amd64 for now. Reviewed by: cem, markj Discussed with: emaste MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D21081 |
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ia32_genassym.c | ||
ia32_signal.h | ||
ia32_sysvec.c | ||
ia32_util.h |