[llvm-branch-commits] [tsan] Lock/Unlock allocator and stacks on fork (PR #96600)

[Dmitry Vyukov via llvm-branch-commits]

https://github.com/dvyukov approved this pull request.

Note that tsan simply disables itself after multithreaded fork, so it produces false sense to operation with die_after_fork=0. And it still can deadlock on mutex/atomic operations and maybe more.

https://github.com/llvm/llvm-project/pull/96600