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| author |   deraadt <deraadt@openbsd.org> | 2017-06-21 19:23:12 +0000 |
|---|---|---|
| committer | deraadt <deraadt@openbsd.org> | 2017-06-21 19:23:12 +0000 |
| commit | 6ad246754118312ee2894796687958bdf081baed (patch) | |
| tree | 0bddbd2d5070d834f39b06c89c606da26b77d92e /sys/kern/subr_hibernate.c | |
| parent | Add regression tests for the filec feature in csh. (diff) | |
| download | wireguard-openbsd-6ad246754118312ee2894796687958bdf081baed.tar.xz wireguard-openbsd-6ad246754118312ee2894796687958bdf081baed.zip | |
Large nopsleds make it easier for ROP machinery to sloppily reach targets.
Convert these to "trapsleds' instead. Since these can occur inside
fall-through blocks of code (and gcc sure isn't helping us by identifying
those), convert most to "short jump over" followed a sequence of int3.
This works for sled sizes 3-15, for i386 and amd64. Work by Todd Mortimer
ok mlarkin
Diffstat (limited to 'sys/kern/subr_hibernate.c')
0 files changed, 0 insertions, 0 deletions