4 ms·

addr = getrandom(8); mem = mmap(addr, len, PROT_RWX, MAP_FIXED|MAP_ANON, -1, 0);

• chrisseaton 8y ago
  It's not realistic to use a per-allocation mapping like that in production - all your allocations will be scaled up to multiples of pages.
  • jacquesm 8y ago
    Whoosh!
• saagarjha 8y ago
  > PROT_RWX Hmm…
  • blattimwind 8y ago
    The X is for fleXibility.
  • rzzzt 8y ago
    How else will you put the self-modifying code there?