[all-commits] [llvm/llvm-project] e00e0b: [asan] Block signals when starting threads

[Vitaly Buka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e00e0b6fb004080214645b14cfe68c3c4eccd437
      https://github.com/llvm/llvm-project/commit/e00e0b6fb004080214645b14cfe68c3c4eccd437
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2023-07-26 (Wed, 26 Jul 2023)

  Changed paths:
    M compiler-rt/lib/asan/asan_interceptors.cpp
    M compiler-rt/lib/asan/asan_posix.cpp

  Log Message:
  -----------
  [asan] Block signals when starting threads

Async signals may crash the process if AsanThread is not fully
initialized. We do the same for other sanitizers already.

Can't have good reproducer for test. We see this in internal test with prob 1e-6.

Reviewed By: kstoimenov

Differential Revision: https://reviews.llvm.org/D156299