[all-commits] [llvm/llvm-project] 9be889: [asan] Fix GC of FakeFrames

[Vitaly Buka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9be8892908d49c19fd6c9fc930d0f41276c3e345
      https://github.com/llvm/llvm-project/commit/9be8892908d49c19fd6c9fc930d0f41276c3e345
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2023-08-09 (Wed, 09 Aug 2023)

  Changed paths:
    M compiler-rt/lib/asan/asan_fake_stack.cpp
    A compiler-rt/test/asan/TestCases/Posix/fake_stack_gc.cpp

  Log Message:
  -----------
  [asan] Fix GC of FakeFrames

When FakeStack GC from altstack, it may see default stack on lower
addressed and incorectly disard all frames.

Fixes bug exposed by D153536.

Reviewed By: kstoimenov

Differential Revision: https://reviews.llvm.org/D157552