commit c9ac9583cf5044bc6108002c8c753c785216facc
author Chia-hung Duan <chiahungduan@google.com> Wed May 10 20:34:36 2023 +0000
committer Copybara-Service <copybara-worker@google.com> Wed May 10 14:55:57 2023 -0700
tree 276c387526f953341f00c393fe798633ad25a537
parent a5d0b046150438317c9213c3d2f879157df3912b

[scudo] Lock FallbackTSD before draining it

Differential Revision: https://reviews.llvm.org/D150301

GitOrigin-RevId: 6561032e1d3c561b3f7ced817bf3350b8622bf92

tsd_exclusive.h

diff --git a/tsd_exclusive.h b/tsd_exclusive.h
index 9d03773..2383674 100644
--- a/tsd_exclusive.h
+++ b/tsd_exclusive.h
@@ -63,7 +63,9 @@
     // We don't have a way to iterate all thread local `ThreadTSD`s. Simply
     // drain the `ThreadTSD` of current thread and `FallbackTSD`.
     Instance->drainCache(&ThreadTSD);
+    FallbackTSD.lock();
     Instance->drainCache(&FallbackTSD);
+    FallbackTSD.unlock();
   }
 
   ALWAYS_INLINE void initThreadMaybe(Allocator *Instance, bool MinimalInit) {