[all-commits] [llvm/llvm-project] cb0e14: [sanitizer] Switch dlsym hack to internal_allocator

[Vitaly Buka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cb0e14ce6dcdd614a7207f4ce6fcf81a164471ab
      https://github.com/llvm/llvm-project/commit/cb0e14ce6dcdd614a7207f4ce6fcf81a164471ab
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2021-11-12 (Fri, 12 Nov 2021)

  Changed paths:
    M compiler-rt/lib/asan/asan_malloc_linux.cpp
    M compiler-rt/lib/dfsan/dfsan_interceptors.cpp
    M compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp
    M compiler-rt/lib/lsan/lsan_common.h
    M compiler-rt/lib/lsan/lsan_interceptors.cpp
    M compiler-rt/lib/memprof/memprof_malloc_linux.cpp
    M compiler-rt/lib/msan/msan_interceptors.cpp
    M compiler-rt/lib/sanitizer_common/CMakeLists.txt
    A compiler-rt/lib/sanitizer_common/sanitizer_allocator_dlsym.h
    M compiler-rt/lib/sanitizer_common/sanitizer_malloc_mac.inc

  Log Message:
  -----------
  [sanitizer] Switch dlsym hack to internal_allocator

Since glibc 2.34, dlsym does
  1. malloc 1
  2. malloc 2
  3. free pointer from malloc 1
  4. free pointer from malloc 2
These sequence was not handled by trivial dlsym hack.

This fixes https://bugs.llvm.org/show_bug.cgi?id=52278

Reviewed By: eugenis, morehouse

Differential Revision: https://reviews.llvm.org/D112588