diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer.h b/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer.h
--- a/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer.h
@@ -212,6 +212,7 @@
     ~SymbolizerScope();
    private:
     const Symbolizer *sym_;
+    int errno_;  // Backup errno in case symbolizer change the value.
   };
 };
 
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer.cpp
--- a/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer.cpp
@@ -10,6 +10,8 @@
 // run-time libraries.
 //===----------------------------------------------------------------------===//
 
+#include <errno.h>
+
 #include "sanitizer_allocator_internal.h"
 #include "sanitizer_common.h"
 #include "sanitizer_internal_defs.h"
@@ -128,7 +130,7 @@
       start_hook_(0), end_hook_(0) {}
 
 Symbolizer::SymbolizerScope::SymbolizerScope(const Symbolizer *sym)
-    : sym_(sym) {
+    : sym_(sym), errno_(errno) {
   if (sym_->start_hook_)
     sym_->start_hook_();
 }
@@ -136,6 +138,7 @@
 Symbolizer::SymbolizerScope::~SymbolizerScope() {
   if (sym_->end_hook_)
     sym_->end_hook_();
+  errno = errno_;
 }
 
 }  // namespace __sanitizer