[compiler-rt] [scudo] Add two missing locks to enable/disable. (PR #79670)

[Evgenii Stepanov via llvm-commits]

================
@@ -136,6 +136,14 @@ class StackDepot {
   u64 operator[](uptr RingPos) const {
     return atomic_load_relaxed(&Ring[RingPos & RingMask]);
   }
+
+  void disable() NO_THREAD_SAFETY_ANALYSIS {
+    RingEndMu.lock();
+  }
+
+  void enable() NO_THREAD_SAFETY_ANALYSIS {
+    RingEndMu.unlock();
+  }
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eugenis wrote:

Great point about the BufferPool lock, removed it from the pull request.
Added a comment in StackDepot.

https://github.com/llvm/llvm-project/pull/79670