[compiler-rt] Msan signals (PR #98405)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: Thurston Dang (thurstond)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/98405.diff


1 Files Affected:

- (modified) compiler-rt/lib/msan/msan_thread.cpp (+4) 


``````````diff
diff --git a/compiler-rt/lib/msan/msan_thread.cpp b/compiler-rt/lib/msan/msan_thread.cpp
index ff9b90bb81f0c..cc4dfe601ead6 100644
--- a/compiler-rt/lib/msan/msan_thread.cpp
+++ b/compiler-rt/lib/msan/msan_thread.cpp
@@ -3,6 +3,7 @@
 #include "msan_thread.h"
 #include "msan_interface_internal.h"
 
+#include "sanitizer_common/sanitizer_linux.h"
 #include "sanitizer_common/sanitizer_tls_get_addr.h"
 
 namespace __msan {
@@ -56,6 +57,9 @@ void MsanThread::TSDDtor(void *tsd) {
 }
 
 void MsanThread::Destroy() {
+#if SANITIZER_LINUX
+  ScopedBlockSignals block(nullptr);
+#endif
   malloc_storage().CommitBack();
   // We also clear the shadow on thread destruction because
   // some code may still be executing in later TSD destructors

``````````

</details>


https://github.com/llvm/llvm-project/pull/98405