[all-commits] [llvm/llvm-project] 498977: asan: fix crash on odd stack size

[Dmitry Vyukov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4989779d7a412a19bab168a1281f6f33edc40870
      https://github.com/llvm/llvm-project/commit/4989779d7a412a19bab168a1281f6f33edc40870
  Author: Dmitry Vyukov <dvyukov at google.com>
  Date:   2023-03-12 (Sun, 12 Mar 2023)

  Changed paths:
    M compiler-rt/lib/asan/asan_thread.cpp
    A compiler-rt/test/sanitizer_common/TestCases/Linux/odd_stack_size.cpp

  Log Message:
  -----------
  asan: fix crash on odd stack size

The test currently crashes as:

AddressSanitizer: CHECK failed: asan_poisoning.cpp:38 "((AddrIsAlignedByGranularity(addr))) != (0)"

Main stack address/size don't have to be aligned on asan shadow granularity.
Align stack bottom.

Reviewed By: melver, vitalybuka

Differential Revision: https://reviews.llvm.org/D145799