tree 17fe98bd70075011f0ae47af4db8c320433e99ec
parent 4d9700a81a7aa2258253095df250ccd7c0100adc
author Dmitry Vyukov <dvyukov@google.com> 1637754846 +0100
committer Copybara-Service <copybara-worker@google.com> 1637769995 -0800

tsan: lock internal allocator around fork

There is a small chance that the internal allocator is locked
during fork and then the new process is created with locked
internal allocator and any attempts to use it will deadlock.
For example, if detected a suppressed race in the parent during fork
and then another suppressed race after the fork.
This becomes much more likely with the new tsan runtime
as it uses the internal allocator for more things.

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D114531

GitOrigin-RevId: 348389263ca545f0dd71aea505c595331d2a07c5