[all-commits] [llvm/llvm-project] 95dfbc: [BOLT] Gadget scanner: detect untrusted LR before ...

[Anatoly Trosinenko via All-commits]

  Branch: refs/heads/users/atrosinenko/bolt-gs-untrusted-lr-before-tail-call
  Home:   https://github.com/llvm/llvm-project
  Commit: 95dfbcb157339ec76f68203acb6547a41bd976b6
      https://github.com/llvm/llvm-project/commit/95dfbcb157339ec76f68203acb6547a41bd976b6
  Author: Anatoly Trosinenko <atrosinenko at accesssoftek.com>
  Date:   2025-04-25 (Fri, 25 Apr 2025)

  Changed paths:
    M bolt/lib/Passes/PAuthGadgetScanner.cpp
    M bolt/test/binary-analysis/AArch64/gs-pacret-autiasp.s
    M bolt/test/binary-analysis/AArch64/gs-pauth-debug-output.s
    A bolt/test/binary-analysis/AArch64/gs-pauth-tail-calls.s

  Log Message:
  -----------
  [BOLT] Gadget scanner: detect untrusted LR before tail call

Implement the detection of tail calls performed with untrusted link
register, which violates the assumption made on entry to every function.

Unlike other pauth gadgets, this one involves some amount of guessing
which branch instructions should be checked as tail calls.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications